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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549



                                   FORM 11-K


      (Mark One)

          [X]     ANNUAL REPORT PURSUANT TO SECTION 15(d)
                  OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE FISCAL YEAR ENDED DECEMBER 31, 2007

                                       OR

          [ ]     TRANSITION REPORT PURSUANT TO SECTION 15(d)
                  OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE TRANSITION PERIOD FROM __________ TO __________


                         COMMISSION FILE NO. 001-06702


     A.   Full title of the plan and  address of the plan,  if  different  from
that of the issuer named below:

                               NEXEN SAVINGS PLAN
                          12790 Merit Drive, Suite 800
                            Dallas, Texas 75251-1270

     B.   Name of issuer of the  securities  held  pursuant to the plan and the
address of its principal executive office:

                                   NEXEN INC.
                              801 - 7th Avenue SW
                        Calgary, Alberta, Canada T2P 3P7




          NEXEN SAVINGS PLAN

          FINANCIAL STATEMENTS AND SUPPLEMENTAL SCHEDULE

          DECEMBER 31, 2007 AND 2006














                                C O N T E N T S


                                                                           Page


REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM.......................1


FINANCIAL STATEMENTS

     Statements of Net Assets Available for Benefits..........................2

     Statements of Changes in Net Assets Available for Benefits...............3

     Notes to Financial Statements............................................4


SUPPLEMENTAL SCHEDULE *

     Schedule H, line 4i - Schedule of Assets (Held at End of Year)..........13



         * Other schedules required by 29 CFR 2520.103-10 of the Department of
         Labor's Rules and Regulations for Reporting and Disclosure under
         Employee Retirement Income Security Act of 1974 have been omitted
         because they are not applicable.





REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM


To the Administrative Committee
NEXEN SAVINGS PLAN
Dallas, Texas

We have  audited  the  accompanying  statements  of net  assets  available  for
benefits of the Nexen  Savings  Plan (the  "Plan") as of December  31, 2007 and
2006,  and the  related  statements  of  changes in net  assets  available  for
benefits  for  the  years  then  ended.  These  financial  statements  and  the
supplemental  schedule  referred to below are the  responsibility of the Plan's
Administrative  Committee. Our responsibility is to express an opinion on these
financial statements and schedule based on our audits.

We conducted our audits in accordance  with the standards of the Public Company
Accounting  Oversight Board (United  States).  Those standards  require that we
plan and perform the audits to obtain  reasonable  assurance  about whether the
financial  statements  are free of  material  misstatement.  An audit  includes
examining,  on a test basis, evidence supporting the amounts and disclosures in
the  financial  statements.  An audit also includes  assessing  the  accounting
principles  used  and  significant  estimates  made by  management,  as well as
evaluating the overall financial  statement  presentation.  We believe that our
audits provide a reasonable basis for our opinion.

In our opinion,  the financial  statements referred to above present fairly, in
all  material  respects,  the net assets  available  for  benefits of the Nexen
Savings  Plan as of  December  31,  2007 and 2006,  and the  changes in its net
assets  available  for benefits for the years then ended,  in  conformity  with
accounting principles generally accepted in the United States of America.

Our audits  were  performed  for the purpose of forming an opinion on the basic
financial  statements  taken as a whole.  The  supplemental  schedule of assets
(held at end of year) is presented for purposes of  additional  analysis and is
not a required  part of the basic  financial  statements  but is  supplementary
information  required by the  Department of Labor's Rules and  Regulations  for
Reporting and Disclosure under the Employee  Retirement  Income Security Act of
1974. The supplemental  schedule has been subjected to the auditing  procedures
applied in the audit of the basic financial  statements and, in our opinion, is
fairly  stated in all  material  respects in  relation  to the basic  financial
statements taken as a whole.


/s/ Weaver and Tidwell, L.L.P.

WEAVER AND TIDWELL, L.L.P.


Dallas, Texas
June 20, 2008






                               NEXEN SAVINGS PLAN
                STATEMENTS OF NET ASSETS AVAILABLE FOR BENEFITS
                           DECEMBER 31, 2007 AND 2006

                                                           2007              2006
                                                       ------------     ------------
                                                                  
                                     ASSETS
   Cash                                                $        340     $  2,116,979
   Investments, at fair value                            58,017,612       52,428,892
   Accrued dividends receivable                              13,749                -
Participant loans                                           761,928          788,945
                                                       ------------     ------------

TOTAL ASSETS                                             58,793,629       55,334,816
                                                       ------------     ------------

                                  LIABILITIES
   Due to broker                                                304            1,781
   Other payables                                                 5                -
                                                       ------------     ------------

TOTAL LIABILITIES                                               309            1,781
                                                       ------------     ------------

NET ASSETS AVAILABLE FOR BENEFITS AT FAIR VALUE          58,793,320       55,333,035

   Adjustment from fair value to contract value for
     fully benefit-responsive investment contracts          (39,594)        (128,693)
                                                       ------------     ------------

NET ASSETS AVAILABLE FOR BENEFITS                      $ 58,753,726     $ 55,204,342
                                                       ============     ============



The Notes to Financial Statements are an integral part of these statements.

                                       2




                               NEXEN SAVINGS PLAN
           STATEMENTS OF CHANGES IN NET ASSETS AVAILABLE FOR BENEFITS
                 FOR THE YEARS ENDED DECEMBER 31, 2007 AND 2006


                                                            2007          2006
                                                        -----------    -----------
                                                                 
ADDITIONS

  Investment income:
    Net appreciation in fair value of investments       $ 1,694,755    $ 4,878,615
    Interest                                                275,523        332,758
    Dividends                                             3,207,061      2,013,672
                                                        -----------    -----------

                                                          5,177,339      7,225,045
                                                        -----------    -----------

  Contributions:
    Participants                                          2,536,726      2,305,947
    Employer                                              1,561,047      1,355,299
    Rollover                                              1,244,981        120,823
                                                        -----------    -----------

                                                          5,342,754      3,782,069
                                                        -----------    -----------

TOTAL ADDITIONS                                          10,520,093     11,007,114
                                                        -----------    -----------

DEDUCTIONS

  Benefits paid to participants                           5,037,612      2,336,249
  Transfer of Plan assets                                 1,928,109              -
  Administrative expenses                                     4,988          4,725
                                                        -----------    -----------

TOTAL DEDUCTIONS                                          6,970,709      2,340,974
                                                        -----------    -----------

NET INCREASE IN NET ASSETS AVAILABLE                      3,549,384      8,666,140


NET ASSETS AVAILABLE FOR BENEFITS, BEGINNING OF YEAR     55,204,342     46,538,202
                                                        -----------    -----------


NET ASSETS AVAILABLE FOR BENEFITS, END OF YEAR          $58,753,726    $55,204,342
                                                        ===========    ===========



                                       3


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 1.   DESCRIPTION OF THE PLAN

     The  following  description  of the Nexen  Savings  Plan (the  "Plan")  is
     provided for general information  purposes only. More complete information
     regarding the Plan's provisions may be found in the Plan Document.

     The Plan is a defined  contribution  plan that was  adopted  September  1,
     1988,  and  amended and  restated  effective  January 1, 2002,  to provide
     eligible  employees of Nexen  Petroleum  U.S.A.  Inc. (the  "Company") and
     participating  employers,  Nexen Marketing U.S.A. Inc. and Nexen Petroleum
     International (U.S.A.) Inc. (the "Participating Employers"),  wholly owned
     subsidiaries  of Nexen Inc., a method to meet their  long-range  financial
     objectives  under the  requirements  of  Section  401(k)  of the  Internal
     Revenue Code.  Effective,  December 29, 2006, an amendment to the plan was
     executed and adopted to remove Nexen Chemicals U.S.A., Inc., Nexen Oil and
     Gas U.S.A.,  Inc. and Canexus U.S.  Inc. as  participating  employers.  In
     early January 2007 the Plan transferred assets totaling  $1,928,109 to the
     newly established Canexus U.S. Inc., Retirement Plan.

     On March 31, 2007,  Quadra Energy Trading,  Inc.  ("QETI") merged with and
     into Nexen Marketing U.S.A. Inc., a participating  employer.  Employees of
     QETI transferred  employment to the Company and its affiliates on April 1,
     2007.  Effective  December 31, 2007, the QETI 401(k) Profit Sharing Plan &
     Trust (the  "QETI  Plan") was  amended to fully vest the  accounts  of all
     participants in the QETI Plan who were employees of Nexen Marketing U.S.A.
     Inc. as of December 31, 2007. Effective January 1, 2008, the QETI Plan was
     amended to merge with and into the Nexen Savings Plan and Trust.

     For the  period  from  January  1,  2007 to April 5, 2007 and for the year
     ended December 31, 2006,  Nationwide Trust Company, FSB was the trustee of
     the Plan.  On April 5,  2007,  all  services  as  trustee of the Plan were
     transferred  to the Charles  Schwab  Trust  Company (the  "Trustee").  The
     recordkeeping   function  is   performed   by  The  401(k)   Company  (the
     "Recordkeeper").

     All regular employees of the Company and  Participating  Employers who are
     18 years of age and over are  eligible to  participate  in the Plan on the
     entry date coinciding with or next following the date the employee attains
     age 18.  Participant  contributions  are  made on a  voluntary  basis  and
     directly withheld from the participant's eligible compensation, as defined
     in the Plan Document.  The Plan offers  participants  the option of making
     Salary   Deferral   Contributions   and/or  Roth   401(k)   Contributions.
     Contributions may be made with: pretax dollars;  after-tax  dollars;  or a
     combination  of  pretax  and  after-tax  dollars.   Eligible  compensation
     excludes  overtime and bonuses.  Participants  are  immediately  vested in
     their employee contribution account and actual earnings thereon.

     The  Company  and  Participating  Employers  will  match  100  percent  of
     Participant   contributions  up  to  6%  of  the  Participant's   eligible
     compensation.  Participants  are immediately 100% vested in their employer
     matching account.


                                       4


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


     NOTE 1.   DESCRIPTION OF THE PLAN - CONTINUED

     The Plan's  investment  options are: (1) Stable Value Trust Fund, (2) Bond
     Fund of America A, (3) American  Century Real Estate  Investment Fund, (4)
     Managers  Special  Equity Fund,  (5) DWS Equity 500 Index Fund, (6) Growth
     Fund of America A, (7) First Eagle Overseas Fund A, (8) EuroPacific Growth
     Fund  A,  (9)  Washington   Mutual  Investors  Fund  A,  (10)  Oppenheimer
     Developing  Markets Fund A, (11) Third Avenue  Value Fund,  (12)  American
     Beacon Small Cap Value Plan,  and (13) Nexen Inc.  Stock Fund. All Company
     and Participating  Employers contributions are invested in accordance with
     the investment choices selected by each respective Participant.

     Distribution of a Participant's  entire account becomes due in three ways:
     (1) upon  termination  of employment,  (2) death,  or (3)  disability,  as
     defined  in the  Plan  Document.  At the  option  of  the  Participant  or
     beneficiary,  such  account  balances  may be  distributed  in a  lump-sum
     payment or via  periodic  installment  payments as  described  in the Plan
     Document.

     Withdrawals  from  the  Plan by  active  Participants  are  permitted  for
     specific instances of financial hardship and age 59 1/2 withdrawals, which
     can be made once every six months.  Once per Plan year, a Participant  may
     withdraw a portion or all of his or her  after-tax  and rollover  account,
     subject to a $250 minimum.

     In  December  2005,  the  Financial   Accounting  Standards  Board  issued
     Statement of Position (SOP) 94-4-1, "REPORTING OF FULLY BENEFIT-RESPONSIVE
     INVESTMENT  CONTRACTS HELD BY CERTAIN INVESTMENT  COMPANIES SUBJECT TO THE
     AICPA INVESTMENT COMPANY GUIDE AND DEFINED-CONTRIBUTION HEALTH AND WELFARE
     AND PENSION PLANS," which affects defined  contribution  pension plans and
     health and  welfare  plans that hold fully  benefit-responsive  investment
     contracts. Currently the Plan holds one investment which is subject to the
     new guidance  under SOP 94-4-1,  the Stable Value Fund,  which is a common
     collective  trust  fund.  The  results  of the new  statements  have  been
     evaluated and are  reflected in the Statement of Net Assets  Available for
     Benefits  and  the  Statement  of  Changes  in Net  Assets  Available  for
     Benefits.


NOTE 2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

     USE OF ESTIMATES

         The preparation of financial  statements in conformity with accounting
         principles generally accepted in the United States requires management
         to make estimates and assumptions  that affect the reported amounts of
         net assets available for benefits and disclosure of contingent  assets
         and  liabilities  at the  date  of the  financial  statements  and the
         reported  amounts  of  additions  to and  deductions  from net  assets
         available for benefits  during the reporting  period.  Actual  results
         could differ from those estimates.


                                       5


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CONTINUED

     BASIS OF ACCOUNTING

         The  financial  statements  of the Plan are  presented  on the accrual
         basis of accounting in accordance with accounting principles generally
         accepted in the United States of America.  Current year contributions,
         expenses,   and  investment   income,   including  both  interest  and
         dividends,  which are not received or paid until the subsequent  year,
         are accrued in the current year. Benefits are recorded when paid.

         As described in Financial  Accounting  Standards Board Staff Position,
         FSP AAG INV-1 and SOP 94-4-1,  Reporting  of Fully  Benefit-Responsive
         Investment  Contracts Held by Certain Investment  Companies Subject to
         the AICPA Investment Company Guide and Defined-Contribution Health and
         Welfare and Pension Plans (the FSP),  investment  contracts  held by a
         defined-contribution  plan are  required to be reported at fair value.
         However, contract value is the relevant measurement attribute for that
         portion  of  the  net  assets  available  for  benefits  of a  defined
         contribution plan attributable to fully benefit-responsive  investment
         contracts  because  contract  value is the amount  participants  would
         receive  if they were to  initiate  permitted  transactions  under the
         terms of the plan. As required by the FSP, the Statement of Net Assets
         Available  for  Benefits  presents  the fair  value of the  investment
         contracts as well as the  adjustment  of the fully  benefit-responsive
         investment  contracts from fair value to contract value. The Statement
         of Changes in Net Assets  Available  for  Benefits  is  prepared  on a
         contract value basis.

     INVESTMENTS

         Investments  are stated at fair value as determined by the Trust based
         on quoted market prices at the Plan's year end. Purchases and sales of
         investments  are  recorded  on a trade date  basis.  Participants  may
         direct their contributions and any related earnings into many distinct
         investment  options,  including the Nexen Inc. Stock Fund. Interest is
         allocated to Participant accounts on a pro-rata basis depending on the
         Participants'  account  balance.  Dividends are allocated based on the
         number of shares in a Participant's account.

         A brief description of investment options is as follows:

           STABLE  VALUE TRUST FUND - The Invesco  Stable Value Trust Fund is a
           collective trust fund in the Institutional Retirement Trust ("IRT").
           IRT is a  Collective  Trust of Invesco  National  Trust  Company for
           Participating  Pensions and Profit  Sharing  Trusts,  established by
           Invesco National Trust Company,  formerly known as AMVESCAP National
           Trust  Company.  The  Trust's  primary  objectives  are  to  provide
           preservation  of principal,  maintain a stable  interest  rate,  and
           provide   daily   liquidity  at  contract   value  for   participant
           withdrawals and transfers.

           AMERICAN  BEACON  SMALL CAP VALUE PLAN - is a small  value fund that
           seeks long-term capital appreciation and current income by investing
           over 80% of its assets in equity  securities of companies within the
           United States.


                                       6


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CONTINUED

     INVESTMENTS - CONTINUED

           BOND  FUND  OF  AMERICA  A  -  invests  primarily  in  high  quality
           intermediate-term corporate bonds and U.S. government securities.

           AMERICAN  CENTURY  REAL  ESTATE  INVESTMENT  FUND - seeks  long-term
           capital appreciation;  current income is a secondary  consideration.
           The fund  invests  at least  80% of  assets  in  equities  issued by
           companies in the real estate industry.

           MANAGERS  SPECIAL  EQUITY  FUND - is a small  growth fund that seeks
           long-term  capital  appreciation by investing at least 80% of assets
           in equity securities.

           DWS  EQUITY 500 INDEX  FUND - is a large  company  growth and income
           fund that  invests  primarily  in  equity  securities  of  companies
           included in the S & P 500.

           GROWTH FUND OF AMERICA A - is a large growth fund that seeks capital
           growth by investing  primarily in common stocks. The fund may invest
           up to 15% of assets in  securities of issuers  domiciled  outside of
           the United States and Canada.

           FIRST  EAGLE  OVERSEAS  FUND A - is a foreign  stock fund that seeks
           long-term capital growth by investing primarily in equities of small
           and mid-sized foreign companies in developed and emerging markets.

           EUROPACIFIC  GROWTH FUND A - is a large  company  foreign stock fund
           that seeks long-term capital  appreciation by investing in companies
           domiciled in developed countries outside the United States.

           WASHINGTON   MUTUAL   INVESTORS   FUND  A  -  is  a  large   company
           value-oriented growth and income fund.

           OPPENHEIMER DEVELOPING MARKETS FUND A - is an emerging markets stock
           fund that seeks long-term  growth by investing in stock of issues in
           countries with developing markets.

           THIRD AVENUE VALUE FUND - is a small value fund that seeks long-term
           capital  appreciation  by investing in equity  securities  issued by
           companies  that are  believed to be  undervalued  and to have strong
           financial positions and responsible management.

           NEXEN INC.  STOCK FUND - provides  ownership  interest in Nexen Inc.
           Common Stock with short-term cash sufficient to maintain a liquidity
           balance  to  facilitate  daily   transactions  and  compliance  with
           securities law.


                                       7


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CONTINUED

     NATURE OF INVESTMENT CONTRACTS

         The Plan's Stable Value Trust Fund (the "Fund")  invests  primarily in
         investment  contracts  such  as  traditional   guaranteed   investment
         contracts  ("GICs") and enters into wrapper  contracts  (also known as
         synthetic GICs). In a traditional GIC, investment contracts are backed
         by the  general  account of the issuer.  The Fund  deposits a lump sum
         with  the  issuer  and  receives  a  guaranteed  interest  rate  for a
         specified  time.  Interest  is accrued on either a simple  interest or
         fully compounded  basis and paid either  periodically or at the end of
         the  contract  terms.   The  issuer   guarantees  that  all  qualified
         participant  withdrawals  will occur at contract value (principal plus
         accrued interest).

         In a synthetic GIC structure,  the underlying investments are owned by
         the Fund and held in trust for plan participants. The Fund enters into
         wrapper contracts from high-quality  insurance companies or banks that
         serve to substantially offset the price fluctuations in the underlying
         investments  caused by  movements  in  interest  rates.  Each  wrapper
         contract  obligates the principal  amounts  invested in the underlying
         investments,  plus interest  accrued at a crediting  rate  established
         under the contract, less any adjustments for withdrawals (as specified
         in the wrapper  agreement).  Under the terms of the wrapper  contract,
         the  realized  and  unrealized  gains  and  losses  on the  underlying
         investments  are,  in  effect,  amortized  over  the  duration  of the
         underlying  investments,  through  adjustments to the future  contract
         interest  crediting rate (which is the rate earned by  participants in
         the  Fund  for  the  underlying  investments).  The  wrapper  contract
         provides  that the  adjustments  to the  interest  crediting  will not
         result in a future  interest  crediting  rate that is less than  zero.
         This ensures that participants' principal and accrued interest will be
         protected.

         In general, if the contract value of the wrapper agreement exceeds the
         market  value  of  the  underlying   investments   (including  accrued
         interest),   the  wrapper  provider  becomes  obligated  to  pay  that
         difference  to the  Fund in the  event  that  shareholder  redemptions
         result in a total  liquidation.  In the event that  there are  partial
         shareholder  redemptions  that would  otherwise  cause the  contract's
         crediting rate to fall below zero percent, the wrapper is obligated to
         contribute to the Fund an amount  necessary to maintain the contract's
         crediting  rate at least zero percent.  The  circumstance  under which
         payments are made and the timing of payments  between the Fund and the
         wrapper provider may vary based on the terms of the wrapper contract.

         In  certain  circumstances,  the  amount  withdrawn  from the  wrapper
         contract would be payable at fair value rather than at contract value.
         These  events  include  termination  of the Plan,  a material  adverse
         change to the provisions of the Plan, the employer  elects to withdraw
         from a wrapper  contract in order to switch to a different  investment
         provider,  or if the  terms of a  successor  Plan (in the event of the
         spin-off  or sale of a  division)  do not  meet the  wrapper  contract
         issuer's  underwriting  criteria  for  issuance  of  a  clone  wrapper
         contract.


                                       8


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CONTINUED

     NATURE OF INVESTMENT CONTRACTS - CONTINUED

         While it is possible that some of the plans participating in the Trust
         may experience  plan  terminations  or other events that would trigger
         fair value  payouts  under the Trust's  wrapper  agreements,  based on
         prior experience,  management of the Trust believes it is not probable
         that such events would be of sufficient magnitude to limit the ability
         of the Trust to transact at contract  value with the  participants  in
         the Trust.  Given that such events are beyond the control of the Plan,
         however, there can be no guarantee that this will be the case.



         Average yields for Stable Value Fund
                                                                              Year ended
                                                                             December 31,
                                                                           ---------------
                                                                            2007     2006
                                                                           ------   ------
                                                                              
         Based on actual earnings (at fair value)                          5.334%   5.110%
         Based on interest rate credited to participants (at fair value)   4.270%   4.851%


     MARKET AND CREDIT RISKS

         The Plan invests in a variety of investments.  Investments are exposed
         to various risks,  such as interest rate, market and credit risks. Due
         to the level of risk  associated  with certain  investments,  it is at
         least  reasonably  possible  that the  changes  in the  values  of the
         investments  will occur in the near term and that such  changes  could
         materially  affect the amount reported in the Plan's  statement of net
         assets available for benefits.

     ADMINISTRATION

         The Plan is administered  by the  Administrative  Committee,  which is
         composed  of  members  who are either  officers  or  employees  of the
         Company.  Investment  options for the Plan are selected by the Benefit
         Plan Design Committee from funds available  through the  Recordkeeper.
         Some of the fund providers  charge 12b-1 fees at the fund level before
         earnings are paid to investors.  The  Recordkeeper  receives fees from
         these fund providers from 12b-1 fees charged to the funds.  12b-1 fees
         received by the Recordkeeper are based on Plan assets invested in each
         fund. Similarly, all Trustee fees for the Plan are received from 12b-1
         fees charged to the funds. 12b-1 fees received by the Trustee are also
         based on Plan assets invested in each fund.


                                       9


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 2.   SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - CONTINUED

     LOANS TO PARTICIPANTS

         Participant  loans receivable are stated at cost,  which  approximates
         fair value. A Participant may borrow up to the lesser of 50% of his or
         her vested  account  balance or $50,000  with a minimum loan amount of
         $1,000.  Loans are repayable  through payroll  deductions over periods
         ranging up to 60 months.  Participants  are  charged a $50 loan set-up
         fee with a $2 monthly  maintenance fee per loan. The loans are secured
         by a lien on the  borrower's  vested  account  balance in the Plan and
         bear interest at rates based on prevailing market conditions. Interest
         rates on  outstanding  loans at December 31, 2007 ranged from 6.25% to
         9.13%.

     PLAN TERMINATION

         Although it has not  expressed any intention to do so, the Company has
         the right to terminate the Plan  pursuant to  provisions  set forth by
         the Plan Document and subject to the provisions of ERISA. In the event
         of Plan  termination,  each  Participant's  account shall become fully
         vested and  Participants  will be entitled to  distributions  of their
         entire accounts.

     NEW ACCOUNTING PRONOUNCEMENTS

         In September  2006, the Financial  Accounting  Standards  Board issued
         Statement  of Financial  Accounting  Standards  (SFAS) No. 157,  "Fair
         Value Measurements." This statement defines fair value,  establishes a
         framework for measuring fair value under generally accepted accounting
         principles,  and expands  disclosures  about fair value  measurements.
         SFAS No. 157 is effective for financial  statements  issued for fiscal
         years  beginning  after  November 15, 2007, The provisions of SFAS No.
         157 are effective for the Plan beginning January 1, 2008. The adoption
         of SFAS No.  157 is not  expected  to have a  material  impact  on the
         Plan's net assets available for plan benefits or changes in net assets
         available for plan benefits


NOTE 3.   TAX STATUS

     The Plan  received a  favorable  determination  letter  from the  Internal
     Revenue  Service  dated  April  5,  2002,  stating  that  the Plan and its
     amendments are qualified under Section 401(a) of the Internal Revenue Code
     of 1986,  as amended (the  "Code"),  and the Trust is exempt from taxation
     under Section 501(a) of the Code. The Trust  established under the Plan to
     hold the Plan's assets is intended to qualify  pursuant to the appropriate
     section of the Internal  Revenue Code as a  tax-exempt  organization.  The
     plan has been amended since receiving the determination  letter.  However,
     the Company and the Plan's tax counsel believe that the Trust continues to
     qualify and to operate as designed.


                                      10


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 4.   INVESTMENTS

     Investments that represent 5% or more of the net assets available for Plan
     benefits at December 31, 2007 and 2006 are as follows:



                                                              December 31,        December 31,
                                                                 2007                 2006
                                                              Fair Value           Fair Value
                                                           ---------------      ----------------
                                                                          
       Bond Fund of America A                              $    3,556,983       $     3,257,643
       EuroPacific Growth Fund A                                4,515,914             3,440,498
       Nexen Inc. Stock Fund                                   17,622,506            17,044,005
       Stable Value Fund                                        5,680,702             5,995,388
       Third Avenue Value Fund                                  3,027,274             2,772,459
       Washington Mutual Investors Fund A                       5,320,310             5,015,076
       Growth Fund of America A                                 3,957,948             3,197,142
       Oppenheimer Developing Markets                           3,164,594                     -
       American Century Real Estate                                     -             2,914,279


     During 2007 and 2006, the Plan's  investments  (including gains and losses
     on investments bought and sold, as well as held during the year) increased
     in value by $5,177,339 and $7,225,045, respectively, as follows:



                                                2007                            2006
                                   ------------------------------  ------------------------------
                                                    Realized and                    Realized and
                                    Interest and      Unrealized    Interest and      Unrealized
                                       Dividends           Gains       Dividends           Gains
                                   --------------  --------------  --------------  --------------
                                                                       
       Mutual funds                $   3,375,250   $  (1,110,899)  $   2,225,242   $   2,169,687
       Stock funds                        53,617       2,805,654          55,371       2,708,928
       Loans to Participants              53,717                          65,817



                                      11


                               NEXEN SAVINGS PLAN
                         NOTES TO FINANCIAL STATEMENTS


NOTE 5.   PLAN AMENDMENTS

     On June 30,  2006,  the Seventh  Amendment  to the Nexen  Savings Plan was
     executed and adopted effective July 1, 2006. The purpose of this amendment
     was to change the Plan's cash-out distribution dollar limit from $1,000 to
     $5,000.

     On December 27, 2006,  the Eighth  Amendment to the Nexen Savings Plan was
     executed  and  adopted   effective   December  1,  2006.   The   amendment
     incorporates  the  provisions  of the Roth 401(k),  the final  regulations
     under  sections  401(k) and 401(m) of the  Internal  Revenue  Code,  and a
     provision  expanding  the  definition  of a financial  hardship to include
     certain  funeral  expenses  and  expenses  for the  repair of damage to an
     employee's principal residence.

     On December 29, 2006,  the Ninth  Amendment to the Nexen  Savings Plan was
     executed and  adopted.  Effective  December 29, 2006,  Section XIII of the
     Adoption  Agreement  was  amended  to  remove  Canexus  U.S.  Inc.,  Nexen
     Chemicals  U.S.A.  Inc, and Nexen Oil and Gas U.S.A.  Inc as participating
     employers under the plan.

     On December 14, 2007,  the Tenth  Amendment to the Nexen  Savings Plan was
     executed  and adopted to permit cash  transfers  directly to the Plan from
     other qualified plans.  Effective December 31, 2007, Section III.G. of the
     Adoption  Agreement  was amended in its entirety to state  transfers  from
     other  plans into this Plan shall not be allowed  without  approval of the
     Benefit Design Committee.

     On December 27, 2007, the Eleventh Amendment to the Nexen Savings Plan was
     executed and adopted. The purpose of the amendment was to allow, effective
     January  1,  2007,  certain  participants,  who are  part  of the  Reserve
     component  of the U.S.  Military  ordered  or called to active  duty after
     September  11,  2001 and before  December  31,  2007 to obtain a Qualified
     Distribution  for  a  non-spouse  beneficiary  to  rollover  funds  to  an
     inherited individual  retirement account; or for a participant to withdraw
     amounts from the plan for certain hardships of a primary  beneficiary.  In
     addition,  the plan was amended to reflect the  appointment of the Charles
     Schwab Trust Company as Trustee of the plan,  replacing  Nationwide  Trust
     Company, FSB, effective April 5, 2007.

NOTE 6.   SUBSEQUENT EVENTS

     The QETI Plan was  amended to merge with and into the Nexen  Savings  Plan
     and Trust effective  January 1, 2008. In early January 2008, the QETI Plan
     transferred assets into the Nexen Savings Plan and Trust totaling $64,116.

     Effective  February  28,  2008,  the Company  entered into an agreement to
     change  investment  options  from the  INVESCO  Stable  Value  Fund to the
     Charles Schwab Stable Value Fund.


                                      12







                             SUPPLEMENTAL SCHEDULE











                               NEXEN SAVINGS PLAN
         SCHEDULE H, LINE 4I - SCHEDULE OF ASSETS (HELD AT END OF YEAR)
                                EIN: 06-0944810
                                PLAN NUMBER 001
                               DECEMBER 31, 2007


(a)               (b)                                    (c)                             (d)          (e)
                                          Description of Investment including
      Identity of Issuer, borrower         maturity date, rate of investment,                       Current
        lessor, or similar party          collateral, par, or maturity value            Cost #       value
- ---- ----------------------------------  ------------------------------------         ---------  ------------
                                                                                        
PARTICIPANT-DIRECTED INVESTMENTS:

     The American Funds Group            Bond Fund of America A,
                                           Net Asset Value $13.06                                $  3,556,983

     The American Funds Group            Washington Mutual Investors Fund A,
                                           Net Asset Value $33.63                                   5,320,310

     The American Funds Group            EuroPacific Growth Fund A,
                                           Net Asset Value $50.87                                   4,515,914

     American Beacon                     American Beacon Small Cap Value Plan
                                           Net Asset Value $17.22                                   1,238,961

     DWS Scudder Funds                   DWS Equity 500 Index Fund,
                                           Net Asset Value $164.59                                  2,582,138

     First Eagle Funds                   First Eagle Overseas Fund A,
                                           Net Asset Value $23.18                                   2,161,842

     Managers Funds                      Managers Special Equity Fund
                                           Net Asset Value $64.26                                   1,931,553

     The American Funds Group            Growth Fund of America A,
                                           Net Asset Value $50.87                                   3,957,948

     Third Avenue Funds                  Third Avenue Value Fund,
                                           Net Asset Value $60.76                                   3,027,274

     American Century Investments        American Century Real Estate Investment Fund,
                                           Net Asset Value $21.16                                   2,768,660

     Oppenheimer Funds                   Oppenheimer Developing Markets Fund A,
                                           Net Asset Value $48.65                                   3,164,594

     The American Funds Group            Cash Management Trust Of America,
                                           Par Value $1.00                                            488,217

     Federated Capital Reserves          Federated Capital Reserves
                                           Par Value $1.00                                                 10

     AMVESCAP National Trust Company     Stable Value Trust Fund,
                                           Par Value $1.00                                          5,680,702

     Chase Bank, NA                      Cash                                                             340

*    Nexen Inc.                          Nexen Inc. Stock Fund
                                            (Nexen Inc. Stock, no par,
                                             Net Asset Value $32.27)                               17,622,506

*    Loans to Participants               Interest Rates From 6.25% to 9.13%                           761,928
                                                                                                 -------------

                                                                                                 $ 58,779,880
                                                                                                 =============


*    Indicates each identified person/entity known to be party-in-interest.

#    Historical   cost   information   omitted  as  it  is  not   required  for
     participant-directed investments.

     This  supplemental  schedule lists assets held for investment  purposes at
     December  31, 2007,  as required by the  Department  of Labor's  Rules and
     Regulations for Reporting and Disclosure.




                                       13


                                   SIGNATURES

          THE PLAN. Pursuant to the requirements of the Securities Exchange Act
of 1934, Nexen Petroleum  U.S.A.  Inc. has duly caused this annual report to be
signed on its behalf by the undersigned hereunto duly authorized.

DATED:  June 25, 2008

                                          NEXEN SAVINGS PLAN

                                          By:  Nexen Petroleum U.S.A. Inc.


                                          By:  /s/ Brian C. Reinsborough
                                               --------------------------------
                                               Brian C. Reinsborough, President







                               INDEX TO EXHIBITS


        EXHIBIT
        NUMBER                   DESCRIPTION OF EXHIBITS
        ------                   -----------------------

           1               Consent of Weaver & Tidwell, L.L.P.