AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON May 12, 2006
                                                    REGISTRATION NO. 333-133818
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
                            __________________________

                               AMENDMENT NO. 1 TO
                                    FORM F-10
                          REGISTRATION STATEMENT UNDER
                           THE SECURITIES ACT OF 1933
                           __________________________

                             PRIMEWEST ENERGY TRUST
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)


                                                                 
             ALBERTA                               1311                             98-0389391
(PROVINCE OR OTHER JURISDICTION OF     (PRIMARY STANDARD INDUSTRIAL    (I.R.S. EMPLOYER IDENTIFICATION NO.,
  INCORPORATION OR ORGANIZATION)        CLASSIFICATION CODE NUMBER)               IF APPLICABLE)

                            __________________________

                           5100, 150 - 6TH AVENUE S.W.
                        CALGARY, ALBERTA, CANADA T2P 3Y7
                                 (403) 234-6600
   (ADDRESS AND TELEPHONE NUMBER OF REGISTRANT'S PRINCIPAL EXECUTIVE OFFICES)
                              CT CORPORATION SYSTEM
                   111 - 8TH AVENUE, NEW YORK, NEW YORK 10011
                                 (212) 894-8940
           (NAME, ADDRESS AND TELEPHONE NUMBER (INCLUDING AREA CODE)
                  OF AGENT FOR SERVICE IN THE UNITED STATES)
                          __________________________

                                   COPIES TO:


                                                        
      DENNIS G. FEUCHUK               LELAND P. CORBETT                    ANDREW J. FOLEY
    PRIMEWEST ENERGY TRUST           STIKEMAN ELLIOTT LLP     PAUL, WEISS, RIFKIND, WHARTON & GARRISON LLP
  5100, 150 - 6TH AVENUE S.W.      4300, 888-3RD STREET, S.W.         1285 AVENUE OF THE AMERICAS
CALGARY, ALBERTA, CANADA T2P 3Y7    CALGARY, ALBERTA T2P 5C5          NEW YORK, NEW YORK 10019-6064
       (403) 234-6600                   (403) 266-9000                     (212) 373-3000
                            __________________________

APPROXIMATE  DATE OF COMMENCEMENT  OF PROPOSED SALE TO THE PUBLIC:  From time to
time after the effective date of this Registration Statement.

                           PROVINCE OF ALBERTA, CANADA
                (PRINCIPAL JURISDICTION REGULATING THIS OFFERING)

It is proposed that this filing shall become effective (check appropriate box
below):
A. |_| upon  filing  with  the  Commission,  pursuant  to  Rule  467(a)  (if  in
       connection  with an offering being made  contemporaneously  in the United
       States and Canada).
B. |X| at some future date (check appropriate box below)
   1.  |_|  pursuant to Rule 467(b) on (      ) at (      ) (designate a time
            not sooner than 7 calendar days after filing).
   2.  |_|  pursuant to Rule 467(b) on (      ) at (     ) (designate a time 7
            calendar days or sooner after filing) because the securities
            regulatory authority in the review jurisdiction has issued a receipt
            or notification of clearance on ( ).
   3.  |X|  pursuant to Rule 467(b) as soon as practicable after notification of
            the Commission by the Registrant or the Canadian securities
            regulatory authority of the review jurisdiction that a receipt or
            notification of clearance has been issued with respect hereto.
   4.  |_|  after the filing of the next amendment to this Form (if preliminary
            material is being filed).
      If any of the securities being registered on this Form are to be offered
on a delayed or continuous basis pursuant to the home jurisdiction's shelf
prospectus offering procedures, check the following box. |X|


    THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR
DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRATION
STATEMENT SHALL BECOME EFFECTIVE AS PROVIDED IN RULE 467 UNDER THE SECURITIES
ACT OF 1933 OR ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SECTION 8(A)
OF THE ACT, MAY DETERMINE.

================================================================================


                                     PART I

                           INFORMATION REQUIRED TO BE
                       DELIVERED TO OFFEREES OR PURCHASERS




                                      I-1


                       SHORT FORM BASE SHELF PROSPECTUS

                               [GRAPHIC OMITTED]
                       [LOGO -- PRIMEWEST ENERGY TRUST]


                                  TRUST UNITS

                                 $750,000,000

         PrimeWest  Energy Trust (the "TRUST") may from time to time offer and
issue  trust  units of the Trust  ("TRUST  UNITS") up to  $750,000,000  in the
aggregate of initial  offering  price (or its equivalent in any other currency
used to  denominate  the Trust Units at the time of the  offering) at any time
during the  25-month  period that this short form base shelf  prospectus  (the
"PROSPECTUS"), including any amendments hereto, remains valid.

         The  specific  terms of the Trust Units  offered will be described in
one or more shelf prospectus supplements (collectively or individually, as the
case may be, a "PROSPECTUS  SUPPLEMENT"),  including the number of Trust Units
being offered, the offering price and any other specific terms.

         All shelf  information  permitted under applicable laws to be omitted
from this Prospectus  will be contained in one or more Prospectus  Supplements
that will be delivered  to  purchasers  together  with this  Prospectus.  Each
Prospectus  Supplement  will be incorporated by reference into this Prospectus
for the purposes of securities  legislation  as of the date of the  Prospectus
Supplement and only for the purposes of the distribution of the Trust Units to
which the Prospectus  Supplement pertains. A Prospectus Supplement may include
specific  variable terms pertaining to the Trust Units that are not within the
alternatives and parameters described in this Prospectus.

         NEITHER THE UNITED STATES  SECURITIES  AND EXCHANGE  COMMISSION  (THE
"SEC") NOR ANY STATE SECURITIES  COMMISSION HAS APPROVED OR DISAPPROVED  THESE
TRUST UNITS OR  DETERMINED  IF THIS  PROSPECTUS  IS TRUTHFUL OR COMPLETE.  ANY
REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENCE.

         THE TRUST IS PERMITTED, UNDER A MULTIJURISDICTIONAL DISCLOSURE SYSTEM
ADOPTED BY THE UNITED STATES,  TO PREPARE THIS  PROSPECTUS IN ACCORDANCE  WITH
CANADIAN DISCLOSURE  REQUIREMENTS.  PROSPECTIVE INVESTORS SHOULD BE AWARE THAT
SUCH  REQUIREMENTS ARE DIFFERENT FROM THOSE OF THE UNITED STATES.  THE TRUST'S
FINANCIAL  STATEMENTS  INCORPORATED  HEREIN BY REFERENCE HAVE BEEN PREPARED IN
ACCORDANCE WITH CANADIAN GENERALLY ACCEPTED ACCOUNTING PRINCIPLES ("GAAP") AND
ARE SUBJECT TO CANADIAN AUDITING AND AUDITOR  INDEPENDENCE  STANDARDS AND THUS
MAY NOT BE COMPARABLE TO FINANCIAL  STATEMENTS OF UNITED STATES'  COMPANIES OR
TRUSTS.

         PROSPECTIVE  INVESTORS  SHOULD BE AWARE THAT  PURCHASING,  HOLDING OR
DISPOSING OF ANY OF THE TRUST UNITS MAY SUBJECT  INVESTORS TO TAX CONSEQUENCES
BOTH IN THE UNITED  STATES  AND  CANADA.  THIS  PROSPECTUS  OR ANY  APPLICABLE
PROSPECTUS   SUPPLEMENT  MAY  NOT  DESCRIBE  THESE  TAX  CONSEQUENCES   FULLY.
PROSPECTIVE  INVESTORS  SHOULD READ THE TAX DISCUSSION IN THIS  PROSPECTUS AND
ANY APPLICABLE PROSPECTUS SUPPLEMENT FULLY.

         AN INVESTOR'S  ABILITY TO ENFORCE CIVIL  LIABILITIES UNDER THE UNITED
STATES FEDERAL  SECURITIES LAWS MAY BE AFFECTED ADVERSELY BECAUSE THE TRUST IS
ORGANIZED  UNDER THE LAWS OF THE  PROVINCE OF ALBERTA,  CANADA,  A MAJORITY OF
PRIMEWEST  ENERGY INC.'S  ("PRIMEWEST")  OFFICERS AND DIRECTORS AND CERTAIN OF
THE EXPERTS NAMED IN THIS  PROSPECTUS ARE RESIDENTS OF CANADA,  AND ALL OF THE
TRUST'S ASSETS AND ALL OR A SIGNIFICANT  PORTION OF THE ASSETS OF SUCH PERSONS
ARE LOCATED OUTSIDE THE UNITED STATES.

         The Trust  may sell the Trust  Units to or  through  underwriters  or
dealers purchasing as principals,  and may also sell the Trust Units to one or
more purchasers  directly,  pursuant to applicable  statutory  exemptions,  or
through agents. The Prospectus Supplement relating to a particular offering of
Trust Units will identify each


                              DATED MAY 12, 2006


underwriter,  dealer or agent  engaged by the Trust,  in  connection  with the
offering  and sale of the  Trust  Units,  and will set  forth the terms of the
offering of such Trust Units,  the method of distribution of such Trust Units,
including, to the extent applicable,  the proceeds to the Trust, and any fees,
discounts or any other compensation payable to underwriters, dealers or agents
and any other material terms of the plan of  distribution.  In connection with
any offering of Trust Units, the underwriters or dealers,  as the case may be,
may over-allot or effect transactions  intended to fix or stabilize the market
price of the Trust Units at a level above that which might  otherwise  prevail
in the open market.  Such transactions,  if commenced,  may be discontinued at
any time. See "Plan of Distribution".

         The outstanding  Trust Units are listed on the Toronto Stock Exchange
(the "TSX") under the symbol "PWI.UN" and the New York Stock Exchange ("NYSE")
under the symbol "PWI".

         The return on an investment  in Trust Units is not  comparable to the
return on an  investment  in a  fixed-income  security.  The  recovery  of the
initial  investment made by holders of Trust Units (the  "UNITHOLDERS")  is at
risk, and the anticipated return on a Unitholder's investment is based on many
performance assumptions. Although the Trust intends to make distributions of a
portion of its available cash to Unitholders,  these cash distributions may be
reduced or suspended.  The ability of the Trust to make cash distributions and
the actual amount distributed will depend on numerous factors including, among
other  things:  the  financial  performance  of the Trust,  debt  obligations,
working capital requirements and future capital requirements, all of which are
susceptible to a number of risks.  In addition,  the market value of the Trust
Units may decline if the Trust is unable to meet its cash distribution targets
in the future, and that decline may be significant.  Prospective purchasers of
Trust Units also should  consider the particular  risk factors that may affect
the industry in which the Trust  operates,  and therefore the stability of the
distributions that Unitholders receive. See "Risk Factors".  This section also
describes the Trust's  assessment of those risk factors,  as well as potential
consequences to Unitholders if a risk should occur.

         The  offering of Trust Units is subject to approval of certain  legal
matters on behalf of the Trust by Stikeman Elliott LLP,  Calgary,  Alberta and
Paul,  Weiss,  Rifkind,  Wharton  &  Garrison  LLP,  New York,  New  York.  NO
UNDERWRITER  OR DEALER IN CANADA OR THE UNITED STATES HAS BEEN INVOLVED IN THE
PREPARATION OF THIS PROSPECTUS OR PERFORMED ANY REVIEW OF THE CONTENTS OF THIS
PROSPECTUS.

         THE TRUST UNITS ARE NOT  "DEPOSITS"  WITHIN THE MEANING OF THE CANADA
DEPOSIT  INSURANCE  CORPORATION  ACT  (CANADA)  AND ARE NOT INSURED  UNDER THE
PROVISIONS OF THAT ACT OR ANY OTHER LEGISLATION. FURTHERMORE, THE TRUST IS NOT
A TRUST COMPANY AND,  ACCORDINGLY,  IT IS NOT  REGISTERED  UNDER ANY TRUST AND
LOAN  COMPANY  LEGISLATION  AS IT DOES NOT  CARRY ON OR INTEND TO CARRY ON THE
BUSINESS OF A TRUST COMPANY.

         The Trust has not  obtained a stability  rating  from an  independent
rating agency  regarding  the relative  stability  and  sustainability  of the
Trust's cash distribution stream. The Trust may consider obtaining a stability
rating from an independent rating agency in the future.

         The Trust's  principal and head office is located at 5100,  150 - 6th
Avenue S.W.,  Calgary,  Alberta T2P 3Y7 and PrimeWest's  registered  office is
located at 4300 Bankers Hall West, 888 - 3rd Street S.W., Calgary, Alberta T2P
5C5.


                                     (ii)




                               TABLE OF CONTENTS

                                          
NOTE REGARDING FORWARD-LOOKING               DESCRIPTION OF TRUST UNITS..............16
STATEMENTS...............................1   DESCRIPTION OF THE ROYALTY..............17
PRESENTATION OF OUR FINANCIAL, RESERVE       PLAN OF DISTRIBUTION....................18
AND OTHER INFORMATION....................3   CASH DISTRIBUTIONS ON TRUST UNITS.......19
NON-GAAP MEASURES........................4   CERTAIN INCOME TAX CONSIDERATIONS.......19
EXCHANGE RATE............................4   LEGAL MATTERS...........................20
ADDITIONAL INFORMATION...................5   INTERESTS OF EXPERTS....................20
ENFORCEABILITY OF CERTAIN CIVIL              AUDITORS, TRANSFER AGENT AND REGISTRAR..20
LIABILITIES..............................5   DOCUMENTS FILED AS PART OF THE
DOCUMENTS INCORPORATED BY REFERENCE......5   REGISTRATION STATEMENT..................20
RISK FACTORS.............................7   AUDITORS' CONSENT.......................21
PRIMEWEST ENERGY TRUST..................15
USE OF PROCEEDS.........................16



                   NOTE REGARDING FORWARD-LOOKING STATEMENTS

         This Prospectus and the documents  incorporated  by reference  herein
contain  forward-looking  statements  with  respect  to the  Trust,  including
forward-looking  statements  within the meaning of the United  States  Private
Securities Litigation Reform Act of 1995.

         The use of any of the  words  "anticipate",  "continue",  "estimate",
"expect", "forecast", "may", "will", "project", "should", "believe", "outlook"
and similar expressions are intended to identify  forward-looking  statements.
In addition, statements relating to "reserves" or "resources" are deemed to be
forward-looking  statements,  as they  involve  implied  assessment,  based on
certain estimates and assumptions,  that the resources and reserves  described
can be profitably  produced in the future.  These statements involve known and
unknown risks,  uncertainties  and other factors that may cause actual results
or events to differ materially from those  anticipated in the  forward-looking
statements.

         The Trust and PrimeWest believe the expectations reflected in those
forward-looking statements are reasonable. However, neither the Trust nor
PrimeWest can assure you that these expectations will prove to be correct. You
should not unduly rely on forward-looking statements included in, or
incorporated by reference into, this Prospectus. These statements speak only
as of the date of this Prospectus or as of the date specified in the documents
incorporated by reference into this Prospectus, as the case may be.

         In particular, this Prospectus, and the documents incorporated by
reference, contain forward-looking statements pertaining to the following:

o        The quantity and recoverability of the Trust's reserves;

o        The timing and amount of future production;

o        Prices for oil, natural gas and natural gas liquids produced;

o        Operating and other costs;

o        Business strategies and plans of management;

o        Supply and demand for oil and natural gas;

o        Expectations  regarding  the Trust's  ability to raise capital and to
         add to the Trust's reserves through  acquisitions and exploration and
         development;

o        The Trust's treatment under governmental regulatory regimes;

                                      1


o        The focus of capital expenditures on development activity rather than
         exploration;

o        The  sale,   farming  in,  farming  out  or  development  of  certain
         exploration properties using third-party resources;

o        The  objective  to  achieve  a  predictable  level  of  monthly  cash
         distributions;

o        The intention of maintaining a payout ratio of  distributions to cash
         flow from operations within any range;

o        The use of development  activity and  acquisitions to replace and add
         to reserves;

o        The  impact of  changes  in oil and  natural  gas prices on cash flow
         after hedging;

o        Drilling plans;

o        The existence,  operations  and strategy of the commodity  price risk
         management program;

o        The approximate and maximum amount of forward sales and hedging to be
         employed;

o        The Trust's  acquisition  strategy,  the criteria to be considered in
         connection therewith and the benefits to be derived therefrom;

o        The  impact  of the  Canadian  federal  and  provincial  governmental
         regulations  on the  Trust  relative  to other  oil and  natural  gas
         issuers of similar size;

o        The goal to sustain or grow  production and reserves  through prudent
         management and acquisitions;

o        The emergence of accretive growth opportunities; and

o        The Trust's ability to benefit from the combination of growth
         opportunities and the ability to grow through the capital markets.

         With  respect  to  forward-looking   statements   contained  in  this
Prospectus,  including the  documents  incorporated  herein by reference,  the
Trust and PrimeWest have made assumptions regarding, among other things:

o        Future oil and natural gas prices and  differentials  between  light,
         medium and heavy oil prices;

o        The cost of expanding the Trust's property holdings;

o        The Trust's  ability to obtain  equipment in a timely manner to carry
         out development activities;

o        The  Trust's  ability  to market  the  Trust's  oil and  natural  gas
         successfully to current and new customers;

o        The impact of increasing competition;

o        The Trust's ability to obtain financing on acceptable terms; and

o        The  Trust's  ability to add  production  and  reserves  through  the
         Trust's development and exploitation activities.

         The  Trust's  actual  results  could  differ  materially  from  those
anticipated  in  these  forward-looking  statements  as a  result  of the risk
factors set forth below and  elsewhere in this  Prospectus  and the  documents
incorporated by reference in this Prospectus:

o        Volatility in market prices for oil and natural gas;

o        The impact of weather conditions on seasonal demand;

o        Risks inherent in the Trust's oil and natural gas operations;

o        Uncertainties associated with estimating reserves;

o        Competition  for,  among  other  things:  capital,   acquisitions  of
         reserves, undeveloped lands and skilled personnel;

                                      2


o        Incorrect assessments of the value of acquisitions;

o        Geological, technical, drilling and processing problems;

o        General economic conditions in Canada, the United States and globally;

o        Industry conditions,  including  fluctuations in the price of oil and
         natural gas;

o        Royalties  payable in  respect of the  Trust's  oil and  natural  gas
         production;

o        Government regulation of the oil and natural gas industry,  including
         environmental regulation;

o        Fluctuation in foreign exchange or interest rates;

o        Unanticipated  operating events that could reduce production or cause
         production to be shut-in or delayed;

o        Failure to obtain industry partner and other third-party consents and
         approvals, when required;

o        Stock market volatility and market valuations;

o        OPEC's  ability to control  production  and balance global supply and
         demand of crude oil at desired price levels;

o        Political  uncertainty,  including  the risks of  hostilities  in the
         petroleum-producing regions of the world;

o        The need to obtain required approvals from regulatory authorities; and

o        The other factors  discussed  under "Risk Factors"  contained in this
         Prospectus.

         These   factors   should  not  be   construed  as   exhaustive.   The
forward-looking  statements  contained in this  Prospectus  and the  documents
incorporated  by reference  herein are expressly  qualified by this cautionary
statement.  The Trust and PrimeWest undertake no obligation to publicly update
or revise any forward-looking statements, except as required by law.

         PRESENTATION OF OUR FINANCIAL, RESERVE AND OTHER INFORMATION

         Unless indicated otherwise, financial information in this Prospectus,
including the documents incorporated by reference herein, has been prepared in
accordance  with  Canadian  GAAP.  Canadian  GAAP differs in some  significant
respects from U.S. GAAP and thus the Trust's  financial  statements may not be
comparable  to the  financial  statements  of U.S.  companies.  The  principal
differences  as they  apply  to the  Trust  are  summarized  in note 20 to the
Trust's annual audited consolidated  financial statements  incorporated herein
by reference.

         The SEC  generally  permits oil and gas  companies,  in their filings
with the SEC,  to  disclose  only  proved  reserves  after  the  deduction  of
royalties and interests of others which are those  reserves that a company has
demonstrated  by  actual  production  or  conclusive  formation  tests  to  be
economically producible under existing economic and operating conditions.  The
securities regulatory authorities in Canada have adopted NI 51-101 - STANDARDS
OF DISCLOSURE FOR OIL AND GAS ACTIVITIES ("NI 51-101"),  which imposes oil and
gas disclosure  standards for Canadian  public issuers  engaged in oil and gas
activities.  NI 51-101  permits oil and gas  issuers,  in their  filings  with
Canadian securities regulators,  to disclose not only proved reserves but also
probable  reserves,  and to disclose  reserves and production on a gross basis
before  deducting  royalties.  Probable  reserves are of a higher risk and are
less likely to be  accurately  estimated  or recovered  than proved  reserves.
Because  the Trust is  permitted  to  disclose  reserves  in  accordance  with
Canadian disclosure  requirements,  the Trust has disclosed in this Prospectus
and  in  the  documents  incorporated  by  reference  reserves  designated  as
"Probable".  If required to be prepared  in  accordance  with U.S.  disclosure
requirements, the SEC's guidelines would prohibit reserves in these categories
from being included. Moreover, in accordance with Canadian practice, The Trust
has determined and disclosed  estimated future net cash flow from its reserves
using both escalated and constant  prices and costs;  for the constant  prices
and costs case,  prices and costs in effect as of December  31, 2005 were held
constant for the economic  life of the  reserves.  The SEC does not permit the
disclosure of estimated future net cash flow from

                                      3


reserves  based on  escalating  prices and costs and  generally  requires that
prices  and  costs be held  constant  at  levels  in effect at the date of the
reserve  report.  Additional  information  prepared in accordance  with United
States Statement of Financial  Accounting  Standards No. 69 "Disclosures About
Oil and Gas Producing Activities" relating to the Trust's oil and gas reserves
is set forth in the Trust's annual audited  consolidated  financial statements
incorporated herein by reference. Unless otherwise stated, all of the reserves
information contained in this Prospectus, including the documents incorporated
herein by reference,  has been  calculated and reported in accordance  with NI
51-101.

         Words importing the singular number only include the plural, and VICE
VERSA, and words importing any gender include all genders.

         All  dollar  amounts  set forth in this  Prospectus  are in  Canadian
dollars, except where otherwise indicated.

                               NON-GAAP MEASURES

         In this Prospectus, including the documents incorporated by reference
herein,  the Trust uses the terms "cash flow", "cash flow from operations" and
"cash available for distribution" to refer to the amount of cash available for
distribution to Unitholders and as indicators of financial performance.  "Cash
flow",  "cash flow from operations" and "cash available for  distribution" are
not measures recognized by Canadian GAAP and do not have standardized meanings
prescribed  by  Canadian  GAAP.  Therefore,   "cash  flow",  "cash  flow  from
operations"  and "cash  available  for  distribution"  of the Trust may not be
comparable to similar measures  presented by other issuers,  and investors are
cautioned that "cash flow",  "cash flow from  operations"  and "cash available
for  distribution"  should not be construed as  alternatives  to net earnings,
cash flow from operating activities or other measures of financial performance
calculated in accordance with Canadian GAAP. All references to "cash flow" and
"cash flow from  operations" are based on cash flow before changes in non-cash
working  capital  related  to  operating  activities,   as  presented  in  the
consolidated   financial   statements  of  the  Trust.   Cash   available  for
distribution  cannot be assured and future  distributions  may vary. The Trust
uses such terms, and  particularly  "cash available for  distribution",  as an
indicator of financial performance because such terms are commonly utilized by
investors  to  evaluate  royalty  trusts and  income  funds in the oil and gas
sector.  The Trust believes that "cash available for distribution" is a useful
supplemental measure as it provides investors with information of what cash is
available for distribution from the Trust to Unitholders in such periods.

                                 EXCHANGE RATE

      The following table sets out certain exchange rates based upon the
noon buying rate in New York City for cable transfers in Canadian dollars as
certified for customs purposes by the Federal Reserve Bank of New York. The
rates are set out as United States dollars per C$1.00 and are the inverse of
the rates quoted by the Federal Reserve Bank of New York for Canadian dollars
per U.S.$1.00.

                                                 Year Ended December 31,
                                           -----------------------------------
                                            2003           2004          2005
                                           ------         ------        ------
Low                                        0.6349         0.7158        0.7872
High                                       0.7738         0.8493        0.8690
Average(1)                                 0.7205         0.7719        0.8282

Note:
(1) Average represents the average of the rates on the last day of each month


         On May 11,  2006,  the  inverse of the noon buying rate quoted by the
Federal  Reserve  Bank  of New  York  for  Canadian  dollars  was  C$1.00  per
U.S.$0.9100.

                                      4


                            ADDITIONAL INFORMATION

         The Trust has filed  with the SEC a  registration  statement  on Form
F-10 of which the Prospectus  forms a part.  This  Prospectus does not contain
all  the  information  set  out in the  registration  statement.  For  further
information  about  the  Trust  and  the  Trust  Units,  please  refer  to the
registration statement.  The Trust is subject to the information  requirements
of the  United  States  SECURITIES  EXCHANGE  ACT OF  1934,  as  amended  (the
"EXCHANGE  ACT")  and  applicable  Canadian  securities  legislation,  and  in
accordance  therewith,  the  Trust  files  and  furnishes  reports  and  other
information with the SEC and with the securities regulatory authorities of the
provinces of Canada. Under a multi-jurisdictional disclosure system adopted by
the United  States and Canada,  the Trust  generally may prepare these reports
and other  information  in  accordance  with the  disclosure  requirements  of
Canada. These requirements are different from those of the United States. As a
foreign private issuer,  the Trust is exempt from the rules under the Exchange
Act  prescribing  the  furnishing  and  content  of  proxy   statements,   and
PrimeWest's officers and directors,  and those Unitholders holding 10% or more
of the Trust  Units,  are exempt from the  reporting  and  short-swing  profit
recovery provisions contained in Section 16 of the Exchange Act.

         The reports and other information filed by the Trust with the SEC may
be read and copied at the SEC's public  reference  room at 100F Street,  N.E.,
Washington, D.C. 20549. Copies of the same documents can also be obtained from
the public  reference  room of the SEC in Washington  by paying a fee.  Please
call the SEC at 1-800-SEC-0330 for further information on the public reference
room. The SEC also  maintains a web site  (www.sec.gov)  that makes  available
reports and other  information  that the Trust files  electronically  with it,
including the registration  statement that the Trust has filed with respect to
this offering.

         Copies of reports,  statements and other  information  that the Trust
files with the  Canadian  provincial  securities  regulatory  authorities  are
electronically  available  from the Canadian  System for  Electronic  Document
Analysis and Retrieval (www.sedar.com), which is commonly known by the acronym
"SEDAR".  Reports and other information about the Trust are also available for
inspection at the offices of the TSX.

                  ENFORCEABILITY OF CERTAIN CIVIL LIABILITIES

         Both the Trust and PrimeWest are organized under the laws of Alberta,
Canada with their principal place of business in Canada. Most of the directors
and all of the officers of PrimeWest  and the  representatives  of the experts
named in this  Prospectus  are  residents of Canada,  and all or a substantial
portion of their assets and the Trust's assets are located  outside the United
States. As a result, it may be difficult for investors in the United States to
effect  service of  process  within the  United  States  upon such  directors,
officers and  representatives  of experts who are not  residents of the United
States or to enforce against them judgments of United States courts based upon
civil  liability  under  the  United  States  federal  securities  laws or the
securities  laws of any state within the United  States.  There is doubt as to
the  enforceability in Canada against the Trust or PrimeWest or against any of
PrimeWest's  directors,  officers  or  representatives  of experts who are not
residents  of the  United  States,  in  original  actions  or in  actions  for
enforcement of judgments of United States courts of  liabilities  based solely
upon the United States federal  securities  laws or the securities laws of any
state within the United States.

                      DOCUMENTS INCORPORATED BY REFERENCE

         The  following  documents  of  the  Trust,  filed  with  the  various
provincial  securities  commissions  or similar  authorities  in  Canada,  are
specifically incorporated into and form an integral part of this Prospectus:

(a)      the annual  information  form of the Trust  dated March 15, 2006 (the
         "AIF");

(b)      management's  discussion and analysis of the financial  condition and
         operations of the Trust for the year ended  December 31, 2005 and the
         audited consolidated  financial statements of the Trust as at and for
         the years ended December 31, 2005,  2004 and 2003,  together with the
         notes  thereto and the  auditors'  report  thereon,  each as filed on
         March 29, 2006;

                                      5


(c)      the  Management  Proxy  Circular of the Trust  relating to the annual
         general and special  meeting of the  Unitholders to be held on May 4,
         2006 (the "PROXY CIRCULAR"); and

(d)      management's  discussion and analysis of the financial  condition and
         operations  of the Trust and the unaudited  comparative  consolidated
         financial  statements  of the  Trust as at and for the  three  months
         ended March 31, 2006, together with the notes thereto.

         Any of the  following  documents,  if  filed  by the  Trust  with the
provincial  securities  commissions or similar authorities in Canada after the
date of this  Prospectus  and  before  the  completion  or  withdrawal  of any
offering  hereunder,  are  deemed  to be  incorporated  by  reference  in this
Prospectus:

(a)      material   change  reports  (except   confidential   material  change
         reports);

(a)      business acquisition reports;

(b)      comparative interim financial statements;

(c)      comparative  financial  statements  for  the  Trust's  most  recently
         completed  financial year,  together with the accompanying  report of
         the auditor; and

(d)      information circulars.

         ANY  STATEMENT   CONTAINED  IN  THIS  PROSPECTUS  OR  IN  A  DOCUMENT
INCORPORATED OR DEEMED TO BE INCORPORATED BY REFERENCE  HEREIN SHALL BE DEEMED
TO BE MODIFIED OR  SUPERSEDED,  FOR THE  PURPOSES OF THIS  PROSPECTUS,  TO THE
EXTENT THAT A STATEMENT  CONTAINED HEREIN OR IN ANY OTHER  SUBSEQUENTLY  FILED
DOCUMENT  WHICH ALSO IS OR IS DEEMED TO BE  INCORPORATED  BY REFERENCE  HEREIN
MODIFIES OR SUPERSEDES SUCH STATEMENT.  THE MODIFYING OR SUPERSEDING STATEMENT
NEED NOT STATE THAT IT HAS MODIFIED OR SUPERSEDED A PRIOR STATEMENT OR INCLUDE
ANY  OTHER  INFORMATION  SET  FORTH  IN  THE  DOCUMENT  THAT  IT  MODIFIES  OR
SUPERSEDES.  THE MAKING OF A MODIFYING OR SUPERSEDING  STATEMENT  SHALL NOT BE
DEEMED  AN  ADMISSION  FOR  ANY  PURPOSES  THAT  THE  MODIFIED  OR  SUPERSEDED
STATEMENT, WHEN MADE, CONSTITUTED A MISREPRESENTATION,  AN UNTRUE STATEMENT OF
A MATERIAL FACT OR AN OMISSION TO STATE A MATERIAL FACT THAT IS REQUIRED TO BE
STATED OR THAT IS NECESSARY TO MAKE A STATEMENT NOT MISLEADING IN LIGHT OF THE
CIRCUMSTANCES  IN WHICH IT WAS MADE.  ANY  STATEMENT SO MODIFIED OR SUPERSEDED
SHALL NOT  CONSTITUTE  A PART OF THIS  PROSPECTUS,  EXCEPT AS SO  MODIFIED  OR
SUPERSEDED.

         Upon a new annual  information  form and the related  annual  audited
consolidated  financial  statements together with the auditors' report thereon
and management's  discussion and analysis contained therein being filed by the
Trust  with,  and where  required,  accepted  by,  the  applicable  securities
regulatory  authorities  during the currency of this Prospectus,  the previous
annual  information form, the previous annual audited  consolidated  financial
statements  and  all  interim  financial  statements,  quarterly  management's
discussion  and  analysis  and  material  change  reports  filed  prior to the
commencement of the Trust's financial year in which the new annual information
form was filed,  no longer shall be deemed to be  incorporated by reference in
this  Prospectus  for the  purpose of future  offers and sales of Trust  Units
hereunder. Upon interim consolidated financial statements and the accompanying
management's  discussion  and  analysis  being  filed  by the  Trust  with the
applicable  securities  regulatory  authorities  during the  duration  of this
Prospectus, all interim consolidated financial statements and the accompanying
management's   discussion   and  analysis  filed  prior  to  the  new  interim
consolidated financial statements shall be deemed no longer to be incorporated
into this  Prospectus  of future  offers and sales of Trust  Units  under this
Prospectus.

         A Prospectus  Supplement containing the specific terms of an offering
of Trust  Units and other  information  in relation to the Trust Units will be
delivered to purchasers of such Trust Units together with this  Prospectus and
will be deemed to be  incorporated by reference into this Prospectus as of the
date of such Prospectus  Supplement solely for the purposes of the offering of
the Trust Units covered by that Prospectus Supplement.

                                      6


         To the  extent  that any  document  or  information  incorporated  by
reference  into this  Prospectus is included in a report that is filed with or
furnished to the SEC on Form 40-F,  10-K,  10-Q, 8-K or 6-K (or any respective
successor  form),  such  document  or  information  shall also be deemed to be
incorporated by reference as an exhibit to the registration  statement on Form
F-10 of which this Prospectus forms a part. In addition,  if and to the extent
indicated  therein,  we may incorporate by reference into this Prospectus from
documents that we file with or furnish to the SEC pursuant to Section 13(a) or
15(d) of the Exchange Act.

         The Trust  maintains  an  Internet  web site on the World Wide Web at
www.primewestenergy.com.  Information  on the  Trust's  web  site is not,  and
should  not  be  deemed  to be,  part  of  this  Prospectus  and is not  being
incorporated by reference herein.

                                 RISK FACTORS

         Prospective  purchasers of the Trust Units should consider  carefully
the risk factors set forth below as well as the other information contained in
and  incorporated  by  reference  in  this  Prospectus  and in the  applicable
Prospectus Supplement before purchasing the Trust Units offered hereby. If any
event  arising  from these  risks  occurs,  the Trust's  business,  prospects,
financial  condition,  results of operations or cash flows could be materially
adversely affected.

RISKS RELATED TO OUR BUSINESS

         VOLATILITY  IN OIL AND  NATURAL  GAS  PRICES  COULD  HAVE A  MATERIAL
ADVERSE EFFECT ON RESULTS OF OPERATIONS  AND FINANCIAL  CONDITION,  WHICH,  IN
TURN,  COULD  AFFECT  THE  MARKET  PRICE OF THE TRUST  UNITS AND THE AMOUNT OF
DISTRIBUTIONS TO UNITHOLDERS.

         Results of operations  and  financial  condition are dependent on the
prices   received  for  the  oil  and  natural  gas  that   PrimeWest   sells.
Historically,  the markets for oil and natural gas have been  volatile and are
likely to continue  to be  volatile in the future.  Oil and natural gas prices
may  fluctuate  widely on a daily  basis in  response  to a variety of factors
beyond the Trust's control, including:

o        Global  energy  policy,  including  the  ability  of  OPEC to set and
         maintain production levels and prices for oil;

o        Political  conditions,  including  the  risk  of  hostilities  in the
         petroleum producing regions of the world;

o        Global and domestic economic conditions;

o        Weather conditions, including weather related natural disasters;

o        The supply and price of imported oil and liquefied natural gas;

o        The production and storage levels of North American natural gas;

o        The level of consumer demand;

o        The price and availability of alternative fuels;

o        The impact of US/Canadian  currency  exchange on the Canadian  prices
         realized by the Trust;

o        The  proximity  of  reserves  to,  and  capacity  of,  transportation
         facilities;

o        The effect of worldwide energy conservation measures; and

o        Government regulations.

         Any  decline in crude oil or  natural  gas prices may have a material
adverse  effect on  PrimeWest's  operations,  financial  condition,  borrowing
ability,  reserves  and the  level  of  expenditures  for the  development  of
reserves.  Any  resulting  decline  in  PrimeWest's  cash  flow  could  reduce
distributions and the market price of the Trust Units.

                                      7


         PrimeWest uses  financial  derivative  instruments  and other hedging
mechanisms to attempt to limit a portion of the adverse effects resulting from
changes in oil and  natural  gas  commodity  prices.  To the extent  PrimeWest
hedges its  commodity  price  exposure,  it  foregoes  the  benefits  it would
otherwise  receive  if  commodity  prices  were  to  increase.   In  addition,
commodity-hedging  activities  could expose  PrimeWest to losses.  Such losses
could occur under various  circumstances,  including  those in which the other
party  to a hedge  does not  perform  its  obligations  under  the  applicable
agreement,  the  hedge  is  imperfect  or  PrimeWest's  hedging  policies  and
procedures are not followed.  Furthermore, these hedging transactions will not
fully offset the risks of changes in commodities prices.

         AN INCREASE IN OPERATING COSTS OR A DECLINE IN PRIMEWEST'S PRODUCTION
LEVEL  COULD  HAVE A  MATERIAL  ADVERSE  EFFECT  ON  THE  TRUST'S  RESULTS  OF
OPERATIONS AND FINANCIAL CONDITION AND, THEREFORE,  COULD REDUCE DISTRIBUTIONS
TO UNITHOLDERS AND AFFECT THE MARKET PRICE OF THE TRUST UNITS.

         Higher operating costs  associated with  PrimeWest's  properties will
directly  decrease  the  amount  of  cash  flow  received  by the  Trust  and,
therefore,  may reduce distributions to Unitholders.  Electricity,  chemicals,
supplies, and reclamation,  abandonment and labour costs are some of the types
of operating costs that are susceptible to material fluctuation.

         The level of production from existing properties may decline at rates
greater than  anticipated due to unforeseen  circumstances,  many of which are
beyond PrimeWest's  control. A significant  decline in production could result
in materially  lower revenues and cash flow and,  therefore,  could reduce the
amount available for distributions to Unitholders.

         DISTRIBUTIONS  MAY BE REDUCED DURING PERIODS IN WHICH PRIMEWEST MAKES
CAPITAL  EXPENDITURES  OR DEBT  REPAYMENTS  USING CASH FLOW,  WHICH COULD ALSO
AFFECT THE MARKET PRICE OF THE TRUST UNITS.

         To the extent that PrimeWest uses cash flow to finance  acquisitions,
development costs and other significant  expenditures,  the net cash flow that
the Trust receives from PrimeWest will be reduced, and, as a consequence,  the
amount  of  cash  available  to  distribute  to  Unitholders   will  decrease.
Distributions  may be reduced,  or even eliminated,  at times when significant
capital or other expenditures are made.

         The board of directors of PrimeWest  has the  discretion to determine
the extent to which cash flow from  PrimeWest will be allocated to the payment
of debt  service  charges  as  well  as the  repayment  of  outstanding  debt,
including debt under the Trust's credit facility. The amount of funds retained
by  PrimeWest  to pay debt  services  charges or reduce  debt will  reduce the
amount of cash distributed to Unitholders  during those periods in which funds
are so retained.

         A DECLINE IN  PRIMEWEST'S  ABILITY TO MARKET ITS OIL AND  NATURAL GAS
PRODUCTION COULD HAVE A MATERIAL ADVERSE EFFECT ON PRODUCTION LEVELS OR ON THE
PRICE RECEIVED FOR PRODUCTION,  WHICH, IN TURN, COULD REDUCE  DISTRIBUTIONS TO
UNITHOLDERS AND AFFECT THE MARKET PRICE OF THE TRUST UNITS.

         PrimeWest's business depends in part upon the availability, proximity
and capacity of gas gathering  systems,  pipelines and processing  facilities.
Canadian  federal and provincial,  as well as United States federal and state,
regulation of oil and gas production,  processing and transportation,  tax and
energy policies, general economic conditions, and changes in supply and demand
could  adversely  affect  PrimeWest's  ability to  produce  and market oil and
natural gas. If market factors change and inhibit the marketing of PrimeWest's
production,  overall  production or realized  prices may decline,  which could
reduce distributions to Unitholders.

         FLUCTUATIONS  IN FOREIGN  CURRENCY  EXCHANGE  RATES  COULD  ADVERSELY
AFFECT  PRIMEWEST'S  BUSINESS,  AND COULD AFFECT THE MARKET PRICE OF THE TRUST
UNITS AS WELL AS DISTRIBUTIONS TO UNITHOLDERS.

         The price that  PrimeWest  receives  for its oil and  natural  gas is
based on United States dollar denominated benchmarks,  and therefore the price
that PrimeWest  receives in Canadian  dollars is affected by the exchange rate
between the two currencies.  A material  increase in the value of the Canadian
dollar  relative  to the  United  States  dollar  may  negatively  impact  net
production  revenue by decreasing  the Canadian  dollars  received for a given

                                      8


United States dollar price.  PrimeWest  could also be subject to  unfavourable
price changes to the extent that it has engaged,  or in the future engages, in
risk management  activities  related to foreign exchange rates,  through entry
into forward foreign exchange contracts or otherwise.

         IF PRIMEWEST IS UNABLE TO ACQUIRE ADDITIONAL  RESERVES,  THE VALUE OF
THE TRUST UNITS AND DISTRIBUTIONS TO UNITHOLDERS MAY DECLINE.

         PrimeWest does not actively explore for oil and natural gas reserves.
Instead,  PrimeWest adds to its reserves  primarily  through  development  and
acquisitions.  As a result,  future oil and  natural gas  reserves  are highly
dependent  on  PrimeWest's  success  in  exploiting  existing  properties  and
acquiring  additional  properties.  PrimeWest also distributes the majority of
its net  cash  flow to  Unitholders  rather  than  reinvesting  it in  reserve
additions. Accordingly, if external sources of capital, including the issuance
of additional  Trust Units,  become  limited or  unavailable  on  commercially
reasonable   terms,   PrimeWest's   ability  to  make  the  necessary  capital
investments  to maintain or expand its oil and  natural gas  reserves  will be
impaired. To the extent that PrimeWest is required to use cash flow to finance
capital  expenditures  or  property  acquisitions,  the  level  of  cash  flow
available  for  distribution  to  Unitholders  will be reduced.  Additionally,
PrimeWest cannot guarantee that it will be successful in developing additional
reserves or acquiring  additional  reserves on terms that meet its  investment
objectives. Without these reserve additions, PrimeWest's reserves will deplete
and as a consequence,  either production from, or the average reserve life of,
its properties  will decline.  Either decline may result in a reduction in the
value of Trust Units and in a reduction in cash available for distributions to
Unitholders.

         ACTUAL  RESERVES  WILL  VARY  FROM  RESERVE   ESTIMATES,   AND  THOSE
VARIATIONS  COULD BE MATERIAL,  AND AFFECT THE MARKET PRICE OF THE TRUST UNITS
AND DISTRIBUTIONS TO UNITHOLDERS.

         The value of the Trust Units  depends upon,  among other things,  the
reserves  attributable  to  PrimeWest's  properties.  Estimating  reserves  is
inherently uncertain.  Ultimately, actual reserves attributable to PrimeWest's
properties will vary from estimates, and those variations may be material. The
reserve figures  contained herein are only estimates.  A number of factors are
considered  and a number of  assumptions  are made when  estimating  reserves.
These factors and assumptions include, among others:

o        Historical  production  in the  areas in  which  the  properties  are
         located and production rates from similar producing areas;

o        Future commodity prices,  production and development costs, royalties
         and capital expenditures;

o        Initial production rates;

o        Production decline rates;

o        Ultimate recovery of reserves;

o        Success of future development activities;

o        Marketability of production;

o        Effects of government regulation; and

o        Other  government  levies that may be imposed over the producing life
         of reserves.

         Reserve estimates are based on the relevant factors,  assumptions and
prices on the date that such estimates are prepared. Many of these factors are
subject  to change  and are  beyond  PrimeWest's  control.  If these  factors,
assumptions  and prices change or prove to be  inaccurate,  actual results may
vary materially from reserve estimates.

         IF  PRIMEWEST  EXPANDS  ITS  OPERATIONS  BEYOND OIL AND  NATURAL  GAS
PRODUCTION  IN  WESTERN  CANADA,  IT MAY FACE NEW  CHALLENGES  AND  RISKS.  IF
PRIMEWEST IS UNSUCCESSFUL IN MANAGING THESE  CHALLENGES AND RISKS, ITS RESULTS
OF OPERATIONS AND FINANCIAL CONDITION COULD BE ADVERSELY AFFECTED, WHICH COULD
AFFECT THE MARKET PRICE OF THE TRUST UNITS AND DISTRIBUTIONS TO UNITHOLDERS.

                                      9


         PrimeWest's   operations  and  expertise  are  currently  focused  on
conventional  oil and gas  production  and  development  in the Western Canada
Sedimentary  Basin. In the future, it may acquire  unconventional  oil and gas
properties outside this geographic area. In addition, the Declaration of Trust
does not limit the activities to oil and gas production and  development,  and
PrimeWest could acquire other energy related  assets,  such as oil and natural
gas processing  plants or pipelines.  Expansion of PrimeWest's  activities may
present  challenges  and risks that it has not faced in the past. If PrimeWest
does not  manage  these  challenges  and risks  successfully,  its  results of
operations and financial condition could be adversely affected.

         IN DETERMINING THE PURCHASE PRICE OF  ACQUISITIONS,  PRIMEWEST RELIES
ON  ASSESSMENTS  RELATING  TO  ESTIMATES  OF  RESERVES  THAT  MAY  PROVE TO BE
INACCURATE,  WHICH  COULD  AFFECT  THE  MARKET  PRICE OF THE  TRUST  UNITS AND
DISTRIBUTIONS TO UNITHOLDERS.

         The price  PrimeWest  is willing to pay for an  acquisition  is based
largely on estimates of the reserves to be  acquired.  Actual  reserves  could
vary materially from these  estimates.  Consequently,  the reserves  PrimeWest
acquires may be less than expected,  which could  adversely  impact cash flows
and distributions to Unitholders.

         An initial  assessment of an acquisition  may be based on a report by
engineers or firms of engineers  that have  different  evaluation  methods and
approaches than those of PrimeWest's engineers,  and these initial assessments
may differ significantly from PrimeWest's subsequent assessments.

         PRIMEWEST  DOES NOT OPERATE  SOME OF ITS  PROPERTIES  AND  THEREFORE,
RESULTS OF OPERATIONS MAY BE ADVERSELY  AFFECTED BY THE FAILURE OF THIRD-PARTY
OPERATORS,  WHICH  COULD  AFFECT  THE  MARKET  PRICE OF THE  TRUST  UNITS  AND
DISTRIBUTIONS TO UNITHOLDERS.

         The  continuing  production  from a property,  and to some extent the
marketing of that  production,  is dependent upon the ability of the operators
of those  properties.  At December 31, 2005,  approximately 20% of PrimeWest's
daily production came from properties operated by third parties. To the extent
that a third party  operator  fails to perform its  functions  efficiently  or
becomes insolvent, PrimeWest's operating income may be reduced.

         Further,  the operating  agreements  that govern the  properties  not
operated by PrimeWest  typically require the operator to conduct operations in
a good and "workmanlike" manner. These operating agreements generally provide,
however, that the operator has no liability to the other non-operating working
interest  owners,  for losses  sustained or liabilities  incurred,  except for
liabilities that may result from gross negligence or wilful misconduct.

         DELAYS IN BUSINESS OPERATIONS COULD ADVERSELY AFFECT DISTRIBUTIONS TO
UNITHOLDERS AND THE MARKET PRICE OF THE TRUST UNITS.

         In addition to the usual delays in payment by  purchasers  of oil and
natural gas to  PrimeWest  and to the  operators of  PrimeWest's  non-operated
properties,  and the  delays  of  those  operators  in  remitting  payment  to
PrimeWest, payments between any of these parties may also be delayed by:

o        Restrictions imposed by lenders;

o        Accounting delays;

o        Delays in the sale or delivery of products;

o        Delays in the connection of wells to a gathering system;

o        Blowouts or other accidents;

o        Adjustments for prior periods;

o        Recovery by the operator of expenses incurred in the operation of the
         properties; or

o        The establishment by the operator of reserves for these expenses.

                                      10


         Any of these  delays could  reduce the amount of cash  available  for
distribution  to  Unitholders  in a  given  period  and  expose  PrimeWest  to
additional third party credit risks.

         THE TRUST AND PRIMEWEST'S INDEBTEDNESS MAY LIMIT THE TIMING OR AMOUNT
OF THE DISTRIBUTIONS THAT ARE PAID TO UNITHOLDERS, AND COULD AFFECT THE MARKET
PRICE OF THE TRUST UNITS.

         The payments of interest and principal, and other costs, expenses and
disbursements  made to the  providers of the Trust's  credit  facility  reduce
amounts  available for  distribution  to  Unitholders.  Variations in interest
rates and scheduled  principal  repayments could result in significant changes
to the amount of the cash flow available for payment to the Unitholders in any
given period.  The agreements  governing the Trust's credit  facility  provide
that if the  Trust or  PrimeWest  are in  default  under  the  Trust's  credit
facility,  exceed certain borrowing  thresholds or fail to comply with certain
covenants,  they must repay the  indebtedness at an accelerated  rate, and the
ability to make distributions to Unitholders may be further restricted.

         The lenders under the Trust's credit facility have been provided with
a security interest in substantially all of the Trust and PrimeWest's  assets.
If the Trust and  PrimeWest  are  unable to pay the debt  service  charges  or
otherwise  commit an event of default,  such as bankruptcy,  these lenders may
foreclose  on and sell  the  properties.  The  proceeds  of any sale  would be
applied to satisfy  amounts owed to the creditors.  Only after the proceeds of
that sale were  applied  towards  the debt  would the  remainder,  if any,  be
available for distribution to Unitholders.

         THE CURRENT CREDIT FACILITY AND ANY  REPLACEMENT  CREDIT FACILITY MAY
NOT PROVIDE SUFFICIENT LIQUIDITY.

         The amounts  available  under the existing credit facility may not be
sufficient for future  operations,  or the Trust and PrimeWest may not be able
to obtain  additional  financing on economic  terms  attractive to them, if at
all. A portion of the  existing  credit  facility is  available  on a one-year
revolving  basis.  If the lenders do not extend the facility at the end of the
annual revolving period, the loan will convert to a term basis with 60% of the
aggregate principal amount of the loan repayable on the date which is 366 days
after that  conversion  date and the remaining 40% of the aggregate  principal
amount  outstanding  repayable on the date which is 365 days after the initial
term  repayment  date.  If this occurs,  the Trust and  PrimeWest  may need to
obtain  alternate  financing.  Any  failure  to  obtain  suitable  replacement
financing  may  have  a  material   adverse   effect  on  the  business,   and
distributions to Unitholders may be materially reduced.

         THE  TRUST  MAY  BE  UNABLE  TO   SUCCESSFULLY   COMPETE  WITH  OTHER
ORGANIZATIONS IN THE TRUST'S INDUSTRY,  WHICH COULD AFFECT THE MARKET PRICE OF
THE TRUST UNITS AND DISTRIBUTIONS TO UNITHOLDERS.

         The oil and natural gas  industry  is highly  competitive.  PrimeWest
competes for capital,  acquisitions of reserves,  undeveloped  lands,  skilled
personnel,  access to drilling rigs, service rigs and other equipment,  access
to  processing  facilities,  pipeline and refining  capacity and in many other
respects with a substantial number of other  organizations,  many of which may
have greater technical and financial  resources than PrimeWest.  Some of these
organizations  explore  for  develop  and produce oil and natural gas but also
carry on refining  operations and market oil and other products on a worldwide
basis.  As a result of these  complementary  activities,  some of  PrimeWest's
competitors may have greater and more diverse competitive resources to draw on
than PrimeWest does.

         THE  INDUSTRY  IN WHICH  PRIMEWEST  OPERATES  EXPOSES  THE  TRUST AND
PRIMEWEST TO POTENTIAL LIABILITIES THAT MAY NOT BE COVERED BY INSURANCE.

         PrimeWest's  operations  are  subject to all of the risks  associated
with  the  operation  and  development  of oil  and  natural  gas  properties,
including the drilling of oil and natural gas wells,  and the  production  and
transportation  of oil and  natural  gas.  These  risks  and  hazards  include
encountering  unexpected  formations or pressures,  blow outs,  craterings and
fires,  all of which  could  result  in  personal  injury,  loss of  life,  or
environmental  and other  damage to  PrimeWest's  property and the property of
others. PrimeWest cannot fully protect against all of these risks, nor are all
of these risks insurable.  While  PrimeWest's  insurance broker is responsible
for ensuring that insurance underwriters have the financial strength necessary
to respond to claims,  PrimeWest  may become  liable for damages  arising from
events against which  PrimeWest  cannot insure or against

                                      11


which PrimeWest may elect not to insure because of high premium costs or other
reasons.  Any costs incurred to repair these damages or pay these  liabilities
would reduce funds available for distribution to Unitholders.

         THE OPERATION OF OIL AND NATURAL GAS WELLS COULD SUBJECT PRIMEWEST TO
ENVIRONMENTAL CLAIMS AND LIABILITY.

         The  oil  and   natural  gas   industry   is  subject  to   extensive
environmental   regulation   pursuant   to  local,   provincial   and  federal
legislation.  A breach of that  legislation  may result in the  imposition  of
fines or the issuance of "clean up" orders. Legislation regulating the oil and
natural gas industry may be changed to impose higher standards and potentially
more costly obligations.  For example, the Kyoto Protocol will require,  among
other things,  significant  reductions in greenhouse  gases. The impact of the
Kyoto  Protocol  on  PrimeWest  is  uncertain  and may  result in  significant
additional costs (future) for PrimeWest's  operations.  Although PrimeWest has
established a reclamation fund for the purpose of funding the estimated future
environmental  and  reclamation  obligations  based on current  knowledge  and
expectations,  PrimeWest  cannot guarantee that it will be able to satisfy its
actual future environmental and reclamation obligations.

         PrimeWest is not fully insured against certain  environmental  risks,
either  because  such  insurance  is not  available or because of high premium
costs. In particular,  insurance  against risks from  environmental  pollution
occurring  over time (as  opposed to sudden and  catastrophic  damages) is not
available  on  economically   reasonable   terms.   Accordingly,   PrimeWest's
properties  may be subject to liability  due to hazards that cannot be insured
against,  or that have not been  insured  against due to  prohibitive  premium
costs or for other reasons.

         Any site  reclamation or abandonment  costs actually  incurred in the
ordinary  course of business  in a specific  period will be funded out of cash
flow and,  therefore,  will reduce the amounts  available for  distribution to
Unitholders. Should PrimeWest be unable to fully fund the cost of remedying an
environmental  problem,  PrimeWest might be required to suspend  operations or
enter into interim  compliance  measures  pending  completion  of the required
remedy.

         LOWER  OIL  AND GAS  PRICES  INCREASE  THE  RISK  OF  WRITE-DOWNS  OF
PRIMEWEST'S OIL AND GAS PROPERTY INVESTMENTS.

         Under Canadian  accounting rules, the net capitalized cost of oil and
gas properties may not exceed a "ceiling  limit" that is based,  in part, upon
estimated  future net cash flows from reserves.  If oil and natural gas prices
decline,  PrimeWest's  net  capitalized  cost may  exceed  this cost  ceiling,
ultimately  resulting in a charge  against  PrimeWest's  earnings.  Under U.S.
GAAP, the cost ceiling is generally lower than under Canadian GAAP because the
future net cash flows used in the United States ceiling test are discounted to
a present value. Accordingly, PrimeWest would have more risk of a ceiling test
write-down in a declining  price  environment  if it reported under U.S. GAAP.
While  these  write-  downs  would not affect  cash flow,  the charge  against
earnings could be viewed unfavourably in the market.

         UNFORESEEN  TITLE  DEFECTS  MAY  RESULT IN A LOSS OF  ENTITLEMENT  TO
PRODUCTION AND RESERVES.

         PrimeWest conducts title reviews in accordance with industry practice
prior to any  purchase  of  resource  assets.  However,  these  reviews do not
guarantee  that an unforeseen  defect in the chain of title will not arise and
defeat  PrimeWest's  title to the purchased  assets.  If such a defect were to
arise,  PrimeWest's  entitlement  to the production  from the affected  assets
could be jeopardized  and, as a result,  distributions  to Unitholders  may be
reduced.

         THE ECONOMIC  IMPACT ON PRIMEWEST  OF CLAIMS OF  ABORIGINAL  TITLE IS
UNKNOWN.

         Aboriginal  people  have  claimed  aboriginal  title and  rights to a
substantial  portion  of  western  Canada.  PrimeWest  is unable to assess the
effect, if any, that any such claim would have on its business and operations.

                                      12


RISKS RELATED TO THE TRUST STRUCTURE AND THE OWNERSHIP OF TRUST UNITS

         CHANGES IN TAX AND OTHER LAWS MAY ADVERSELY AFFECT UNITHOLDERS.

         Income tax laws, other laws or government incentive programs relating
to the oil and gas  industry,  such as the treatment of mutual fund trusts and
resource  allowance,  may in the future be changed or  interpreted in a manner
that  adversely  affects the Trust and  Unitholders.  Tax  authorities  having
jurisdiction over the Trust or the Unitholders may disagree with the manner in
which the Trust  calculates  its income for tax purposes or could change their
administrative  practices  to the Trust's  detriment  or the  detriment of its
Unitholders.

         THERE WOULD BE MATERIAL  ADVERSE TAX  CONSEQUENCES  IF THE TRUST LOST
ITS STATUS AS A MUTUAL FUND TRUST UNDER CANADIAN TAX LAWS.

         It is  intended  that the Trust  continue to qualify as a mutual fund
trust for purposes of the Income Tax Act (Canada)  (the "Tax Act").  The Trust
may not,  however,  always be able to satisfy any future  requirements for the
maintenance  of mutual fund trust status.  Should the status of the Trust as a
mutual  fund  trust  be lost or  successfully  challenged  by a  relevant  tax
authority,   certain  adverse   consequences  may  arise  for  the  Trust  and
Unitholders.  Some of the significant consequences of losing mutual fund trust
status are as follows:

o        The Trust would be taxed on certain  types of income  distributed  to
         Unitholders,  including  income  generated by the Royalty held by the
         Trust.  Payment of this tax may have  adverse  consequences  for some
         Unitholders,  particularly  Unitholders  that  are not  residents  of
         Canada  and  residents  of  Canada  that are  otherwise  exempt  from
         Canadian income tax.

o        Trust  Units held by  Unitholders  that are not  residents  of Canada
         would become taxable Canadian property.  These  non-resident  holders
         would be subject to  Canadian  income tax on any gains  realized on a
         disposition of Trust Units held by them.

o        The  Trust  Units  would not  constitute  qualified  investments  for
         Registered   Retirement   Savings  Plans,   or  "RRSPs",   Registered
         Retirement  Income Funds, or "RRIFs",  Registered  Education  Savings
         Plans, or "RESPs" or Deferred  Profit Sharing Plans, or "DPSPs".  If,
         at the end of any month,  one of these exempt plans holds Trust Units
         that are not qualified investments,  the plan must pay a tax equal to
         1% of the fair market  value of the Trust Units at the time the Trust
         Units were  acquired  by the  exempt  plan.  An RRSP or RRIF  holding
         non-qualified  Trust  Units  would be subject to  taxation  on income
         attributable  to the Trust  Units,  including  the full amount of any
         capital gain realized on a disposition of  non-qualified  Trust Units
         by the RRSP or RRIF. If an RESP holds  non-qualified  Trust Units, it
         may have its registration revoked by the Canada Revenue Agency.

         The Trust may take  certain  measures in the future to the extent the
Trust  believes  them  necessary to ensure that it  maintains  its status as a
mutual fund trust. These measures could be adverse to certain holders of Trust
Units.

         RIGHTS AS A UNITHOLDER  DIFFER FROM THOSE ASSOCIATED WITH OTHER TYPES
OF INVESTMENTS.

         The Trust Units do not represent a traditional  investment in the oil
and natural gas sector and should not be viewed by  investors as shares in the
Trust or PrimeWest.  The Trust Units represent an equal fractional  beneficial
interest in the Trust and, as such,  the ownership of the Trust Units does not
provide  Unitholders  with  the  statutory  rights  normally  associated  with
ownership of shares of a  corporation,  including,  for example,  the right to
bring  "oppression"  or  "derivative"  actions.  The  unavailability  of these
statutory  rights may also  reduce the  ability of  Unitholders  to seek legal
remedies against other parties on PrimeWest's behalf.

         The Trust Units are also unlike conventional debt instruments in that
there is no principal  amount owing to Unitholders.  The Trust Units will have
minimal  value when  reserves  from  PrimeWest's  properties  can no longer be
economically  produced or marketed.  Unitholders will only be able to obtain a
return of the capital  they  invested  during the period when  reserves may be
economically recovered and sold. Accordingly,  the distributions received over
the  life  of the  investment  may not  meet or  exceed  the  initial  capital
investment.

                                      13


         THE LIMITED LIABILITY OF UNITHOLDERS IS UNCERTAIN.

         On July 1, 2004 a new statute  entitled the INCOME  TRUSTS  LIABILITY
ACT (Alberta) was proclaimed in force,  creating a statutory limitation on the
liability  of  unitholders  of Alberta  income  trusts such as the Trust.  The
legislation  provides that a Unitholder is not, as a  beneficiary,  liable for
any act,  default,  obligation  or  liability of the Trustee that arises after
July 1, 2004.

         However,  because  of  prior  uncertainties  in the law  relating  to
investment trusts,  there is a risk that a Unitholder could be held personally
liable for  obligations  of the Trust in respect of contracts or  undertakings
which the Trust  entered into and for certain  liabilities  arising  otherwise
than out of contracts  including claims in tort, claims for taxes and possibly
certain other statutory  liabilities  arising prior to July 1, 2004.  Although
every  written  contract or  commitment  of the Trust must  contain an express
disavowal  of liability of the  Unitholders  and a limitation  of liability to
Trust property, such protective provisions may not operate to avoid Unitholder
liability  for  the  relevant  period.   Notwithstanding   attempts  to  limit
Unitholder  liability,  Unitholders may not be protected from such liabilities
to the same extent that a shareholder is protected  from the  liabilities of a
corporation.  Further,  although  the Trust has agreed to  indemnify  and hold
harmless  each  Unitholder  from any costs,  damages,  liabilities,  expenses,
charges and losses suffered by the Unitholder resulting from or arising out of
that Unitholder not having limited liability,  the Trust cannot guarantee that
any assets would be available in these circumstances to reimburse  Unitholders
for any such liability.

         CHANGES IN  MARKET-BASED  FACTORS  MAY  ADVERSELY  AFFECT THE TRADING
PRICE OF TRUST UNITS.

         The  market  price of the Trust  Units is  primarily  a  function  of
anticipated distributions to Unitholders and the value of the properties owned
by PrimeWest  and the Trust.  The market price of the Trust Units is therefore
sensitive to a variety of market-based factors, including, but not limited to,
interest  rates  and the  comparability  of the  Trust  Units to  other  yield
oriented  securities.  Any changes in these market-based factors may adversely
affect the trading price of the Trust Units.

         THE  OPERATION  OF  THE  TRUST  IS  ENTIRELY   INDEPENDENT  FROM  THE
UNITHOLDERS  AND LOSS OF KEY MANAGEMENT AND OTHER  PERSONNEL  COULD IMPACT THE
BUSINESS.

         Unitholders  are entirely  dependent on the  management  of the Trust
with respect to the  acquisition  of oil and gas  properties  and assets,  the
development  and  acquisition  of  additional  reserves,  the  management  and
administration   of  all   matters   relating  to  the   properties   and  the
administration  of the Trust.  The loss of the services of key individuals who
currently  comprise the management team could have a detrimental effect on the
Trust. Investors should carefully consider whether they are willing to rely on
the existing management before investing in the Trust Units.

         THERE MAY BE FUTURE DILUTION.

         One of the Trust's  objectives is to continually  add to its resource
reserves through acquisitions and through development.  Because the Trust does
not reinvest the majority of its cash flow, its success is, in part, dependent
on its  ability to raise  capital  from time to time by selling  Trust  Units.
Unitholders  will suffer  dilution as a result of Trust Unit offerings if, for
example,  the cash flow,  production or reserves  from acquired  assets do not
reflect the  additional  number of Trust Units issued to acquire those assets.
Dilution may also occur if the  deployment of funds raised through the various
components of the Trust's  distribution  reinvestment  plan does not result in
the creation of additional value for Unitholders.

         THERE MAY NOT ALWAYS BE AN ACTIVE TRADING MARKET IN THE UNITED STATES
AND/OR CANADA FOR THE TRUST UNITS.

         While there is currently an active trading market for the Trust Units
in both the United  States and  Canada,  the Trust  cannot  guarantee  that an
active trading market will be sustained in either country.

                                      14


         THE REDEMPTION RIGHT OF UNITHOLDERS IS LIMITED.

         Unitholders  have a limited  right to require the Trust to repurchase
their  Trust  Units,  which  is  referred  to  as a  redemption  right.  It is
anticipated  that the redemption  right will not be the primary  mechanism for
Unitholders to liquidate their investment.  The Trust's ability to pay cash in
connection with redemption is subject to  limitations.  Any securities,  which
may be distributed in specie to Unitholders in connection with redemption, may
not be listed on any stock  exchange  and a market  may not  develop  for such
securities.  Also,  such  securities  (or some of them) may not be a qualified
investment for RRSPs, RRIFs, DPSPs or RESPs. In addition,  there may be resale
restrictions  imposed by law upon the recipients of the securities pursuant to
the redemption right.

                            PRIMEWEST ENERGY TRUST

THE TRUST

         The Trust is an open-end  investment  trust created under the laws of
Alberta  pursuant to a declaration of trust dated as of August 2, 1996,  among
the settlor of the Trust,  PrimeWest and Montreal Trust Company of Canada,  as
amended and restated (the "DECLARATION OF TRUST"). Computershare Trust Company
of Canada is the trustee of the Trust (the  "TRUSTEE").  The  beneficiaries of
the  Trust are the  Unitholders.  The  Trust's  principal  and head  office is
located at 5100, 150 - 6th Avenue S.W., Calgary, Alberta T2P 3Y7.

         The  principal  undertaking  of the  Trust is to  acquire  and  hold,
directly and indirectly,  interests in oil and natural gas properties.  One of
the Trust's  primary  assets is currently a royalty (the  "ROYALTY")  equal to
approximately  99% of the net cash flow  generated  by the oil and natural gas
interests  held  from  time to time by  PrimeWest,  after  certain  costs  and
deductions.  See "Description of the Royalty" below. A portion of the net cash
flow received by the Trust is distributed  monthly to  Unitholders.  The Trust
also lends money to  PrimeWest to allow it to make  further  acquisitions  and
develop  its  properties.  The  interest  income  earned on such funds is also
distributed monthly to Unitholders.

         The  structure  of the Trust  and the flow of funds  from the oil and
natural gas properties  owned by PrimeWest to the Trust, and from the Trust to
Unitholders,  is set forth in more  detail  on page 1 of the AIF  incorporated
herein by reference under the heading "Organization - Trust Structure".

PRIMEWEST

         PrimeWest  was  incorporated  under  the  BUSINESS  CORPORATIONS  ACT
(Alberta) (the "ABCA") on March 4, 1996 and was amalgamated with PrimeWest Oil
and Gas Corp., PrimeWest Royalty Corp. and PrimeWest Resources Ltd. on January
1, 2002, with PrimeWest  Management Inc. and another subsidiary on November 6,
2002 and  with  PrimeWest  Gas  Corp.  on  December  31,  2005,  in each  case
continuing as PrimeWest Energy Inc. The head and principal office of PrimeWest
is located at 5100,  150 - 6th Avenue S.W.,  Calgary,  Alberta T2P 3Y7. All of
the issued and  outstanding  voting shares of PrimeWest are currently  held by
the Trust.

         The   business  of  PrimeWest   is  the   acquisition,   development,
exploitation, production and marketing of oil and natural gas and granting the
Royalty to the Trust.

         The capital structure of PrimeWest includes  exchangeable shares (the
"EXCHANGEABLE SHARES"). The Exchangeable Shares were issued in connection with
previous  corporate  acquisitions.  As at May 2, 2006,  there were  issued and
outstanding 1,175,935 Exchangeable Shares, which are exchangeable into 691,532
Trust Units based on a ratio which is adjusted and increased on each date that
the Trust pays a  distribution  to its  Unitholders.  As at May 2,  2006,  the
exchange  ratio was  0.58807  Trust  Units for each  Exchangeable  Share.  The
outstanding Exchangeable Shares are traded on the TSX under the trading symbol
"PWX".

                                      15


                                USE OF PROCEEDS

         The Trust Units will be issued from time to time at the discretion of
the Trust with an aggregate  offering amount not to exceed  $750,000,000.  The
net proceeds  derived  from the issue of the Trust Units under any  Prospectus
Supplement  will be the aggregate  offering amount thereof less any commission
and other issuance costs paid in connection therewith. The net proceeds cannot
be  estimated  as the amount  thereof  will  depend on the extent to which the
Trust  Units are issued  under any  Prospectus  Supplement.  Unless  otherwise
specified in the applicable  Prospectus  Supplement,  the net proceeds will be
added to the general funds of the Trust and will be used for general  business
purposes.

                          DESCRIPTION OF TRUST UNITS

         The   following  is  a  summary  of  the  material   attributes   and
characteristics  of the Trust  Units.  This  summary  does not  purport  to be
complete and is subject to, and qualified in its entirety by, reference to the
terms of the  Declaration  of Trust.  A summary of certain  provisions  of the
Declaration of Trust, in addition to those establishing the terms of the Trust
Units, is contained in Item 1 of the AIF incorporated herein by reference.

         Each Trust Unit represents an equal undivided  beneficial interest in
the Trust. Each Trust Unit shares equally in all distributions  from the Trust
and all Trust  Units  carry equal  voting  rights at meetings of  Unitholders.
Except  as  otherwise  set  forth  in the  documents  incorporated  herein  by
reference,  no Unitholder is liable to pay any further calls or assessments in
respect  of the  Trust  Units and no  conversion,  retraction,  redemption  or
pre-emptive  rights  attach to the Trust  Units.  Unitholders  have a right of
redemption as further described under the heading "- Redemption Right" in Item
1 of the AIF incorporated herein by reference.

         An unlimited  number of Trust Units have been  authorized  and may be
issued  pursuant to the  Declaration of Trust.  At April 24, 2006,  there were
80,906,609  Trust Units  outstanding.  The  Declaration of Trust provides for,
among other  things,  the calling of meetings of  Unitholders,  the conduct of
business  thereof,  notice  provisions,  the  appointment  and  removal of the
trustee of the Trust and the form of Trust Unit certificates.  The Declaration
of Trust may be  amended  from  time to time.  Substantive  amendments  to the
Declaration of Trust, including early termination of the Trust and the sale or
transfer of the  property of the Trust as an entirety or  substantially  as an
entirety, will require approval by a special meeting of Unitholders at which a
resolution  must be  passed  by a  majority  of not less than 66% of the votes
cast, either in person or by proxy, at such meeting.

CASH DISTRIBUTIONS

         Unitholders of record on the fifth trading day following the 15th day
of each month are  entitled to receive  cash  distributions  of  distributable
income of the Trust in respect of that month.  Such  distributions are made on
or about the 15th day of the  following  month.  The Trust has not  obtained a
stability  rating from an  independent  rating  agency  regarding the relative
stability and  sustainability  of the Trust's cash  distribution  stream.  The
Trust may consider  obtaining a stability  rating from an  independent  rating
agency in the future. See also "Cash Distributions on Trust Units" below.

CONSTRAINTS ON NON-RESIDENT OWNERSHIP OF TRUST UNITS

         In order to  provide  PrimeWest  with a  measure  of  flexibility  in
responding to evolving positions within the Government of Canada's  Department
of Finance on appropriate  levels of ownership of Trust Units by non-residents
of Canada, the Declaration of Trust provides:

(b)      if at any time the board of directors of PrimeWest determines, in its
         sole  discretion,  or  becomes  aware,  that the  Trust's  ability to
         continue to rely on  paragraph  132(7)(a) of the Tax Act for purposes
         of  qualifying  as a "mutual fund trust"  thereunder  is in jeopardy,
         then the Trust shall not be  maintained  primarily for the benefit of
         non-residents  of Canada and it shall be the sole  responsibility  of
         PrimeWest to monitor the holdings by non-residents of Canada and take
         such steps as are  necessary or desirable to ensure that the Trust is
         not maintained primarily for the benefit of non-residents of Canada;

                                      16


(c)      PrimeWest may request that the Trustee make  reasonable  efforts,  as
         practicable  in  the  circumstances,  to  obtain  declarations  as to
         beneficial  ownership,  perform residency  searches of Unitholder and
         beneficial Unitholder mailing address lists and take such other steps
         specified by PrimeWest to determine or estimate as best  possible the
         residence of the beneficial owners of Trust Units; and

(d)      If at any  time the  board of  directors  of  PrimeWest,  in its sole
         discretion,  determines that it is in the best interest of the Trust,
         PrimeWest may,  notwithstanding  the ability of the Trust to continue
         to rely on paragraph 132(7)(a) of the Tax Act:

         (i)      require the Trustee to refuse to accept a  subscription  for
                  Trust Units  from,  or issue or register a transfer of Trust
                  Units to, a person unless the person  provides a declaration
                  to   PrimeWest   that  the  Trust  Units  to  be  issued  or
                  transferred   to  such   person  will  not  when  issued  or
                  transferred  be  beneficially  owned  by a  non-resident  of
                  Canada;

         (ii)     to  the  extent  practicable  in the  circumstances,  send a
                  notice  to  registered  holders  of Trust  Units  which  are
                  beneficially  owned by  non-residents  of Canada,  chosen in
                  inverse order to the order of acquisition or registration of
                  such Trust  Units  beneficially  owned by  non-residents  of
                  Canada or in such other  manner as  PrimeWest  may  consider
                  equitable  and  practicable,  requiring  them to sell  their
                  Trust Units which are beneficially owned by non-residents of
                  Canada or a  specified  portion  thereof  within a specified
                  period  of  not  less  than  60  days.  If  the  Unitholders
                  receiving such notice have not sold the specified  number of
                  such Trust Units or  provided  PrimeWest  with  satisfactory
                  evidence that such Trust Units are not beneficially owned by
                  non-residents  within such period,  PrimeWest may, on behalf
                  of such registered Unitholder, sell such Trust Units and, in
                  the  interim,  suspend  the voting and  distribution  rights
                  attached  to such Trust Units and make any  distribution  in
                  respect of such Trust Units by  depositing  such amount in a
                  separate bank account in a Canadian  chartered  bank (net of
                  any applicable  taxes).  Any sale shall be made on any stock
                  exchange on which the Trust Units are then listed and,  upon
                  such sale, the affected holders shall cease to be holders of
                  Trust Units so disposed of and their rights shall be limited
                  to receiving the net proceeds of sale, and any  distribution
                  in respect thereof deposited as aforesaid, net of applicable
                  taxes and costs of sale, upon surrender of the  certificates
                  representing such Trust Units;

         (iii)    delist the Trust Units from any non-Canadian stock exchange;
                  and

         (iv)     take  such  other  actions  as the  board  of  directors  of
                  PrimeWest   determines,   in  its   sole   discretion,   are
                  appropriate in the  circumstances  that will reduce or limit
                  the number of Trust Units held by  non-resident  Unitholders
                  to ensure that the Trust is not maintained primarily for the
                  benefit of non-residents of Canada.

                          DESCRIPTION OF THE ROYALTY

         The Trust's  primary  sources of net cash flow are payments  received
from the Royalty issued to the Trust by PrimeWest on the  production  from its
oil and natural gas  properties  and interest and  principal  payments on debt
issued to the Trust by PrimeWest.  For a complete  description  of the Royalty
prospective  purchasers  should  refer to the Royalty  Agreements  (as defined
below), copies of which are available on SEDAR and at www.sec.gov.

         The Royalty is payable to the Trust under a royalty agreement between
the Trust and PrimeWest and a royalty  agreement between PrimeWest and a prior
subsidiary  of  PrimeWest   that  was  assigned  by  PrimeWest  to  the  Trust
(collectively, the "ROYALTY AGREEMENTS").  Pursuant to the Royalty Agreements,
PrimeWest  is  required  to pay to the Trust the  Royalty  with  respect  to a
particular  month on the 15th day (or the next business day if the 15th is not
a business day) of the month  following.  The Royalty is in an amount equal to
99% of the  aggregate  of the  production  revenues  generated  by the oil and
natural gas  interests  held from time to time by PrimeWest  and certain other
revenues, net of certain permitted costs and deductions.  The Royalty does not
constitute an interest in land.

                                      17


         The Royalty  created by the Royalty  Agreements  attaches not only to
the  properties  presently  owned by  PrimeWest,  but  also to the  properties
PrimeWest  acquires from time to time.  In the event of a future  acquisition,
the Royalty Agreements require the Trust to make certain payments to PrimeWest
in an amount equal to 99% of the  aggregate of the portion of the  acquisition
costs attributable to Canadian resource  properties and certain of the capital
expenditures in respect of the properties  being acquired.  These payments are
referred to as "deferred  purchase price obligations" and are payable provided
that,  among other  things,  the Trust is able to fund the  deferred  purchase
price obligations from the issuance of additional Trust Units, borrowings, the
proceeds of dispositions from other properties or the proceeds of dispositions
of the royalty sold in a concurrent  disposition.  As a result of the deferred
purchase price  obligation,  the Trust will provide  PrimeWest with 99% of the
funding it requires to acquire additional resource  properties.  The remaining
1% of the cost of such  properties  will be borne by  PrimeWest  using its own
working capital or funds borrowed by it for such purposes.

                             PLAN OF DISTRIBUTION

         The Trust  may sell the  Trust  Units  (i)  through  underwriters  or
dealers,  (ii)  directly  to one or more  purchasers  pursuant  to  applicable
statutory exemptions, or (iii) through agents in Canada, the United States and
elsewhere  where permitted by law for cash or other  consideration.  The Trust
Units  may be sold  at  fixed  prices  or  non-fixed  prices,  such as  prices
determined  by  reference  to the  prevailing  price of the  Trust  Units in a
specified market, at market prices prevailing at the time of sale or at prices
to be negotiated with purchasers,  which prices may vary as between purchasers
and during the  period of  distribution  of the Trust  Units.  The  Prospectus
Supplement for any of the Trust Units being offered thereby will set forth the
terms of the offering of such Trust Units,  including the name or names of any
underwriters,  dealers or agents,  the purchase price of such Trust Units, the
proceeds to the Trust from such sale,  any  underwriting  discounts  and other
items constituting underwriters'  compensation,  any public offering price and
any  discounts  or  concessions  allowed or  re-allowed  or paid to dealers or
agents. Only underwriters so named in the relevant  Prospectus  Supplement are
deemed to be underwriters in connection with the Trust Units offered thereby.

         If  underwriters  are  used in the  sale,  the  Trust  Units  will be
acquired by the underwriters for their own account and may be resold from time
to time in one or more transactions,  including negotiated transactions,  at a
fixed public  offering  price or at varying  prices  determined at the time of
sale. The obligations of the underwriters to purchase such Trust Units will be
subject  to  certain  conditions  precedent,  and  the  underwriters  will  be
obligated to purchase all the Trust Units offered by the Prospectus Supplement
if any of such Trust Units are  purchased.  Any public  offering price and any
discounts  or  concessions  allowed or  re-allowed  or paid to dealers  may be
changed from time to time.

         In connection with any offering of Trust Units,  the  underwriters or
dealers, as the case may be, may over-allot or effect transactions intended to
fix or  stabilize  the market  price of the Trust  Units at a level above that
which  might  otherwise  prevail in the open  market.  Such  transactions,  if
commenced, may be discontinued at any time.

         The Trust Units may also be sold directly by the Trust at such prices
and upon such  terms as agreed to by the Trust and the  purchaser  or  through
agents  designated by the Trust from time to time.  Any agent  involved in the
offering  and sale of the Trust Units in respect of which this  Prospectus  is
delivered  will be named,  and any  commissions  payable  by the Trust to such
agent  will be set  forth,  in the  Prospectus  Supplement.  Unless  otherwise
indicated in the  Prospectus  Supplement,  any agent would be acting on a best
efforts basis for the period of its appointment.

         The Trust may agree to pay the  underwriters a commission for various
services relating to the issue and sale of any Trust Units offered hereby. Any
such  commission  will  be  paid  out  of the  general  funds  of  the  Trust.
Underwriters,  dealers and agents who  participate in the  distribution of the
Trust Units may be entitled under agreements to be entered into with the Trust
to  indemnification  by  the  Trust  against  certain  liabilities,  including
liabilities under securities  legislation,  or to contribution with respect to
payments which such underwriters, dealers or agents may be required to make in
respect thereof.

                                      18


                       CASH DISTRIBUTIONS ON TRUST UNITS

RECORD OF CASH DISTRIBUTIONS ON TRUST UNITS

         The  following  table sets forth the per Trust Unit amount of monthly
cash distributions paid by the Trust since January 2004.

DISTRIBUTION DATE    MONTH            2006           2005          2004
- -------------------  --------------  -------------  -----------  ------------
February 15          January         $  0.36        $  0.30      $  0.32
March 15             February           0.36           0.30         0.25
April 15             March              0.36           0.30         0.25
May 15               April              0.36(1)        0.30         0.25
June 15              May                0.36(2)        0.30         0.25
July 15              June                              0.30         0.25
August 15            July                              0.30         0.25
September 15         August                            0.30         0.275
October 15           September                         0.30         0.30
November 15          October                           0.30         0.30
December 15          November                          0.30         0.30
January 15           December                          0.36         0.30

Notes:
(1) Payment will be made on May 15, 2006 to Unitholders of record on April 24,
    2006.
(2) Payment will be made on June 15, 2006 to Unitholders of record on May 25,
    2006.


DISTRIBUTION POLICY

         Cash  distributions to Unitholders are at the discretion of the board
of  directors  of  PrimeWest  and can  fluctuate  depending  on the cash  flow
generated  from  operations.  The cash  flow  available  for  distribution  is
dependent  upon  many  factors,  including  fluctuations  in the  quantity  of
petroleum  and natural  gas  substances  produced,  prices  received  for that
production,  hedging contract receipts and payments,  currency exchange rates,
taxes  and  direct  expenses  of  the  Trust,  as  well  as  reclamation  fund
contributions,  current and future capital  expenditures  and operating costs,
debt  service  charges  and  general and  administrative  expenses  determined
necessary by PrimeWest.  The Trust receives monthly  revenues  pursuant to the
Royalty in an amount  determined,  in part, by the directors of PrimeWest,  as
well as income from other sources, and distributes a portion of these revenues
to Unitholders monthly. See "Description of the Royalty" above.

         Since August 2003, the Trust has followed a strategy of maintaining a
distribution  payout  ratio  within 70 - 90% of cash  flow,  calculated  on an
annual basis,  recognizing that, during periods of volatile  commodity prices,
the payout ratio may temporarily  move out of range. The board of directors of
PrimeWest   considers  a  variety  of  factors  in  establishing  the  monthly
distribution  level,  including,  but not limited to: commodity price outlook,
cash flow forecast, capital development plans, debt levels, tax considerations
and competitive industry distribution practices.  The Trust believes that this
strategy provides the Trust with greater financial  flexibility while reducing
the cost and potential dilution associated with financing activities.

                       CERTAIN INCOME TAX CONSIDERATIONS

         The applicable  Prospectus  Supplement will describe certain Canadian
federal income tax  consequences to an investor who is a resident of Canada or
who is a non-resident of Canada of acquiring, owning or disposing of any Trust
Units  offered  thereunder,  including to the extent  applicable,  whether the
distributions  relating  to the  Trust  Units  will  be  subject  to  Canadian
non-resident withholding tax.

         The  applicable  Prospectus  Supplement  will also  describe  certain
United States federal income tax consequences of the ownership and disposition
of any Trust Units offered  thereunder by an initial  investor who is a United
States person (within the meaning of the United States Internal Revenue Code).

                                      19


                                 LEGAL MATTERS

         Certain  legal  matters in  connection  with the Trust Units  offered
hereby  will be passed upon on behalf of the Trust by  Stikeman  Elliott  LLP,
Calgary,  Alberta and Paul, Weiss, Rifkind,  Wharton & Garrison LLP, New York,
New York.

                             INTERESTS OF EXPERTS

         Reserve estimates contained in the AIF, and incorporated by reference
into this Prospectus,  are based upon the report of GLJ Petroleum  Consultants
Ltd. ("GLJ") dated January 23, 2006  evaluating,  as at December 31, 2005, the
reserves of crude oil, natural gas and associated  products  attributed to the
properties.  The principals of GLJ, as a group,  own,  directly or indirectly,
less than 1% of the outstanding Trust Units.

                    AUDITORS, TRANSFER AGENT AND REGISTRAR

         The auditors of the Trust are  PricewaterhouseCoopers  LLP, Chartered
Accountants, 111 - 5th Avenue S.W., Suite 3100, Calgary, Alberta T2P 5L3.

         The transfer agent and registrar for the Trust Units is Computershare
Trust Company of Canada at its principal offices in Toronto and Calgary.

             DOCUMENTS FILED AS PART OF THE REGISTRATION STATEMENT

         The following  documents  have been filed with the SEC as part of the
registration  statement of which this Prospectus is a part insofar as required
by the SEC's Form F-10:

(a)      the documents listed under "Documents Incorporated by Reference";

(b)      the consent of PricewaterhouseCoopers LLP;

(c)      the consent of GLJ;

(d)      powers of attorney from PrimeWest's directors and officers; and

(e)      the Declaration of Trust.


                                      20


                               AUDITORS' CONSENT

         We have read the short form base shelf prospectus of PrimeWest Energy
Trust (the  "TRUST")  dated May 12,  2006 (the  "PROSPECTUS")  relating to the
issue and sale of up to  $750,000,000  of trust  units of the  Trust.  We have
complied  with  Canadian   generally   accepted  standards  for  an  auditor's
involvement with offering documents.

         We consent to the  incorporation by reference in the  above-mentioned
Prospectus of our report to the  Unitholders of the Trust on the  consolidated
balance  sheets  of the  Trust  as at  December  31,  2005  and  2004  and the
consolidated  statements of income,  changes in  unitholders'  equity and cash
flows for the  three  years  ended  December  31,  2005.  Our  report is dated
February 10, 2006.



Calgary, Alberta                           (signed) PricewaterhouseCoopers LLP
May 12,  2006                                            Chartered Accountants






                                      21





                               [GRAPHIC OMITTED -- LOGO]

                                   P R I M E W E S T

                                E N E R G Y   T R U S T







                                     PART II
                         INFORMATION NOT REQUIRED TO BE
                       DELIVERED TO OFFEREES OR PURCHASERS

Section 124 of the Business Corporations Act (Alberta) provides as follows:

        124(1)  Except  in  respect  of  an  action  by  or  on  behalf  of  the
corporation or body corporate to procure a judgment in its favour, a corporation
may  indemnify a director or officer of the  corporation,  a former  director or
officer of the  corporation  or a person who acts or acted at the  corporation's
request as a director or officer of a body corporate of which the corporation is
or was a shareholder  or creditor,  and the  director's  or officer's  heirs and
legal  representatives,  against all costs,  charges and expenses,  including an
amount  paid to settle an action or satisfy a judgment,  reasonably  incurred by
the  director  or officer in respect of any civil,  criminal  or  administrative
action or  proceeding to which the director or officer is made a party by reason
of being or having  been a  director  or  officer  of that  corporation  or body
corporate, if

                (a)     the director or officer acted honestly and in good faith
                        with a view to the best  interests  of the  corporation,
                        and

                (b)     in the case of a criminal  or  administrative  action or
                        proceeding that is enforced by a monetary  penalty,  the
                        director or officer had reasonable grounds for believing
                        that the director's or officer's conduct was lawful.

        (2)     A  corporation  may with the  approval of the Court  indemnify a
person  referred to in subsection (1) in respect of an action by or on behalf of
the corporation or body corporate to procure a judgment in its favour,  to which
the person is made a party by reason of being or having  been a  director  or an
officer of the  corporation or body  corporate,  against all costs,  charges and
expenses  reasonably incurred by the person in connection with the action if the
person fulfills the conditions set out in subsection (1)(a) and (b).

        (3)     Notwithstanding  anything in this section,  a person referred to
in subsection  (1) is entitled to indemnity  from the  corporation in respect of
all costs,  charges and expenses reasonably incurred by the person in connection
with the defence of any civil,  criminal or administrative  action or proceeding
to which the person is made a party by reason of being or having been a director
or officer of the corporation or body corporate, if the person seeking indemnity

                (a)     was  substantially  successful  on  the  merits  in  the
                        person's defence of the action or proceeding,

                (b)     fulfills the conditions set out in subsection (1)(a) and
                        (b), and

                (c)     is fairly and reasonably entitled to indemnity.

        (3.1)   A  corporation  may advance funds to a person in order to defray
                the costs,  charges and expenses of a proceeding  referred to in
                subsection  (1) or (2),  but if the  person  does  not  meet the
                conditions  of  subsection  (3) he or she shall  repay the funds
                advanced.

        (4)     A  corporation  may  purchase  and  maintain  insurance  for the
benefit of any person  referred  to in  subsection  (1)  against  any  liability
incurred by the person

                (a)     in the person's capacity as a director or officer of the
                        corporation,  except when the  liability  relates to the
                        person's  failure to act honestly and in good faith with
                        a view to the best interests of the corporation, or

                (b)     in the  person's  capacity  as a director  or officer of
                        another  body  corporate  if the person acts or acted in
                        that capacity at the corporation's request,  except when
                        the  liability  relates to the  person's  failure to act
                        honestly  and in  good  faith  with a view  to the  best
                        interests of the body corporate.

        (5)     A  corporation  or a person  referred to in  subsection  (1) may
apply to the Court for an order  approving an  indemnity  under this section and
the Court may so order and make any further order it thinks fit.

                                      II-1


        (6)     On an  application  under  subsection  (5),  the Court may order
notice to be given to any  interested  person  and that  person is  entitled  to
appear and be heard in person or by counsel.

        Section 5 of the bylaws of PrimeWest  Energy Inc.,  the duly  authorized
attorney  of the  Trust,  contains  the  following  provisions  with  respect to
indemnification of PrimeWest Energy Inc.'s directors and officers:

        5.01    Limitation  of  Liability.  No  director or officer for the time
being of the  Corporation  shall be  liable  for  acts,  receipts,  neglects  or
defaults  of any other  director or officer or  employee,  or for joining in any
receipt or act for conformity,  or for any loss,  damage or expense happening to
the Corporation through the insufficiency or deficiency of title to any property
acquired by the  Corporation  or for or on behalf of the  Corporation or for the
insufficiency  of  deficiency of any security in or upon which any of the moneys
of or belonging to the Corporation shall be placed or invested,  or for any loss
or damage arising from the bankruptcy, insolvency or tortuous act of any person,
firm or corporation  including any person, firm or corporation with whom or with
which any moneys,  security or effects shall be lodged or deposited,  or for any
loss, conversion,  misapplication or misappropriation of or any damage resulting
from any dealings with any moneys, securities or other assets of or belonging to
the Corporation or for any other loss, damage or misfortune whatsoever which may
happen in the  execution of the duties of his  respective  office or trust or in
relation  thereto  unless the same shall  happen by or  through  his  failure to
exercise the powers and to discharge the duties of his office honestly,  in good
faith and with a view to the best  interest of the  Corporation  and to exercise
the care, diligence and skill that a reasonably prudent person would exercise in
comparable circumstances.

        5.02    Indemnity.   The  Corporation   shall,  to  the  maximum  extent
permitted under the Act,  indemnify a director or officer,  a former director or
officer,  and a  person  who acts or acted  at the  Corporation's  request  as a
director or officer of a body  corporate  of which the  Corporation  is or was a
shareholder or creditor,  and his heirs and legal  representatives,  against all
costs,  charges and  expenses,  including any amount paid to settle an action or
satisfy a judgment, reasonably incurred by him in respect of any civil, criminal
or administrative  action or proceeding to which he is made a party by reason of
being or having  been a  director  or officer  of the  Corporation  or such body
corporate, including (without limitation) any such action by or on behalf of the
Corporation or such body corporate to procure a judgment in its favour,  and the
Corporation  shall use its  reasonable  best  efforts to obtain any  approval or
approvals necessary for such indemnification.

        Insofar as indemnification  for liabilities arising under the Securities
Act of 1933 may be permitted to directors,  officers or persons  controlling the
Registrant  pursuant  to the  foregoing  provisions,  the  Registrant  has  been
informed  that in the opinion of the  Securities  and Exchange  Commission  such
indemnification  is against public policy as expressed in the Securities Act and
is therefore unenforceable.




                                      II-2


                                    EXHIBITS

EXHIBIT
NUMBER            DESCRIPTION
- -------           -----------

4.1               The Registrant's renewal annual information form dated March
                  15, 2006 (incorporated by reference to the Registrant's Form
                  40-F filed with the Commission on March 30, 2006, Commission
                  File No. 333-13238).

4.2               The Registrant's audited  consolidated  financial statements
                  for the  years  ended  December  31,  2005,  2004 and  2003,
                  together  with the notes  thereto and the  auditors'  report
                  thereon (excluding those portions thereof which appear under
                  the headings  "Trading  Performance,"  "Five Year  Financial
                  Summary," "Five Year Operating Summary," "Five Year Trading,
                  Performance   and   Distribution   Summary,"   "Three   Year
                  Distribution History," "Income Tax Considerations," "Premium
                  Distribution,  Distribution  Reinvestment and Optional Trust
                  Unit Purchase Plan,"  "Definitions,"  "PrimeWest  Structure"
                  and  "Corporate  Information,"  none of which form a part of
                  the Registrant's audited consolidated financial statements),
                  and  management's  discussion  and analysis of the financial
                  condition  and  operations  for the year ended  December 31,
                  2005  (incorporated  by reference to the  Registrant's  Form
                  40-F filed with the Commission on March 30, 2006, Commission
                  File No. 333-13238).

4.3               The  Registrant's  Management Proxy Circular dated March 15,
                  2006,  relating to the annual general and special meeting of
                  the  Unitholders  held  on  May  4,  2006  (incorporated  by
                  reference  to the  Registrant's  Form  6-K  filed  with  the
                  Commission   on  March  30,   2006,   Commission   File  No.
                  333-13238).

4.4               The   Registrant's   unaudited   comparative    consolidated
                  financial  statements  for the three  months ended March 31,
                  2006,  together  with the notes  thereto,  and  management's
                  discussion  and  analysis  of the  financial  condition  and
                  operations  for  the  three  months  ended  March  31,  2006
                  (incorporated  by  reference  to the  Registrant's  Form 6-K
                  filed with the  Commission on May 3, 2006,  Commission  File
                  No. 333-13238).

5.1               Consent of PricewaterhouseCoopers LLP

5.2*              Consent of GLJ Petroleum Consultants Ltd.

6.1*              Powers of Attorney.

7.1               Declaration  of  Trust  dated  as of the 2nd day of  August,
                  1996,  restated as of November 6, 2002 and amended as of May
                  6, 2004 between  PrimeWest  Energy  Trust and  Computershare
                  Trust  Company of Canada  (incorporated  by reference to the
                  Registrant's Form F-3 filed with the Commission on September
                  8, 2005, Commission File No. 333-128185).


- ---------------------
*Previously filed.





                                     II-3


                                   PART III
                 UNDERTAKING AND CONSENT TO SERVICE OF PROCESS

ITEM 1.  UNDERTAKING

         The  Registrant  undertakes  to  make  available,  in  person  or  by
telephone,  representatives  to respond to  inquiries  made by the  Commission
staff,  and to furnish  promptly,  when  requested to do so by the  Commission
staff, information relating to the securities registered pursuant to Form F-10
or to transactions in said securities.


ITEM 2.  CONSENT TO SERVICE OF PROCESS

         Concurrent with the filing of the Registration Statement on Form F-10
dated  May 4,  2006,  the  Registrant  filed  with the  Commission  a  written
irrevocable consent and power of attorney on Form F-X.

         Concurrent with the filing of the Registration Statement on Form F-10
dated  May 4, 2006,  the  trustee  for the Trust  Units,  Computershare  Trust
Company of Canada, filed with the Commission a written irrevocable consent and
power of attorney on Form F-X.

         Any change to the name or address of the agent for service of process
of the  Registrant  shall  be  communicated  promptly  to the  Securities  and
Exchange  Commission  by an  amendment  to the Form F-X  referencing  the file
number of the relevant registration statement.




                                    III-1


                                  SIGNATURES

         Pursuant  to the  requirements  of the  Securities  Act of 1933,  the
Registrant  certifies that it has reasonable  grounds to believe that it meets
all of the  requirements  for  filing  on Form F-10 and has duly  caused  this
Amendment  to the  Registration  Statement  to be signed on its  behalf by the
undersigned,  thereunto duly authorized,  in the City of Calgary,  Province of
Alberta, Canada, on the 12th day of May, 2006.


                                    PRIME WEST ENERGY TRUST, BY ITS AUTHORIZED
                                    ATTORNEY, PRIMEWEST ENERGY INC.


                                    By: /s/ Dennis G. Feuchuk
                                        ------------------------------------
                                        Name:   Dennis G. Feuchuk
                                        Title:  Vice President, Finance
                                                and Chief Financial Officer



         Pursuant to the  requirements  of the  Securities  Act of 1933,  this
Amendment to the Registration Statement has been signed below by the following
persons in the capacities indicated on May 12, 2006.


    SIGNATURE                         TITLE


             *
- ---------------------------------   President and Chief Executive Officer
Donald A. Garner


/s/ Dennis G. Feuchuk               Vice President, Finance and Chief Financial
- ---------------------------------   Officer (Principal Financial Officer,
Dennis G. Feuchuk                   Principal Accounting Officer)


             *
- ---------------------------------   Director
James W. Patek


             *
- ---------------------------------   Director
Harold P. Milavsky


             *
- ---------------------------------   Director
Barry E. Emes


- ---------------------------------   Director
Harold N. Kvisle


             *
- ---------------------------------   Director
Michael W. O'Brien


             *
- ---------------------------------   Director
Kent J. MacIntyre




                                    III-2



             *
- ---------------------------------   Director
W. Glen Russell



             *
- ---------------------------------   Director
Peter Valentine





*By: Dennis G. Feuchuk
     ----------------------------
     Name:  Dennis G. Feuchuk
            Attorney-in-fact





                           AUTHORIZED REPRESENTATIVE

         Pursuant to the requirements of Section 6(a) of the Securities Act of
1933, the undersigned has signed this Amendment to the Registration Statement,
in the capacity of the duly authorized representative of the Registrant in the
United States, on May 12, 2006.

                                    PRIMEWEST ENERGY (USA) INC.



                                    By: /s/ Dennis G. Feuchuk
                                        ------------------------------------
                                        Name:   Dennis G. Feuchuk
                                        Title:  Vice President, Finance
                                                and Chief Financial Officer



                                    III-4



                                   EXHIBITS

EXHIBIT
NUMBER            DESCRIPTION
- -------           -----------

4.1               The Registrant's renewal annual information form dated March
                  15, 2006 (incorporated by reference to the Registrant's Form
                  40-F filed with the Commission on March 30, 2006, Commission
                  File No. 333-13238).

4.2               The Registrant's audited  consolidated  financial statements
                  for the  years  ended  December  31,  2005,  2004 and  2003,
                  together  with the notes  thereto and the  auditors'  report
                  thereon (excluding those portions thereof which appear under
                  the headings  "Trading  Performance,"  "Five Year  Financial
                  Summary," "Five Year Operating Summary," "Five Year Trading,
                  Performance   and   Distribution   Summary,"   "Three   Year
                  Distribution History," "Income Tax Considerations," "Premium
                  Distribution,  Distribution  Reinvestment and Optional Trust
                  Unit Purchase Plan,"  "Definitions,"  "PrimeWest  Structure"
                  and  "Corporate  Information,"  none of which form a part of
                  the Registrant's audited consolidated financial statements),
                  and  management's  discussion  and analysis of the financial
                  condition  and  operations  for the year ended  December 31,
                  2005  (incorporated  by reference to the  Registrant's  Form
                  40-F filed with the Commission on March 30, 2006, Commission
                  File No. 333-13238).

4.3               The  Registrant's  Management Proxy Circular dated March 15,
                  2006,  relating to the annual general and special meeting of
                  the  Unitholders  held  on  May  4,  2006  (incorporated  by
                  reference  to the  Registrant's  Form  6-K  filed  with  the
                  Commission   on  March  30,   2006,   Commission   File  No.
                  333-13238).

4.4               The   Registrant's   unaudited   comparative    consolidated
                  financial  statements  for the three  months ended March 31,
                  2006,  together  with the notes  thereto,  and  management's
                  discussion  and  analysis  of the  financial  condition  and
                  operations  for  the  three  months  ended  March  31,  2006
                  (incorporated  by  reference  to the  Registrant's  Form 6-K
                  filed with the  Commission on May 3, 2006,  Commission  File
                  No. 333-13238).

5.1               Consent of PricewaterhouseCoopers LLP

5.2*              Consent of GLJ Petroleum Consultants Ltd.

6.1*              Powers of Attorney.

7.1               Declaration  of  Trust  dated  as of the 2nd day of  August,
                  1996,  restated as of November 6, 2002 and amended as of May
                  6, 2004 between  PrimeWest  Energy  Trust and  Computershare
                  Trust  Company of Canada  (incorporated  by reference to the
                  Registrant's Form F-3 filed with the Commission on September
                  8, 2005, Commission File No. 333-128185).


- ---------------------
*Previously filed.



                                    III-5