EXHIBIT 4


               AMENDING AGREEMENT TO SECURITIES PURCHASE AGREEMENT

                                 AND DEBENTURES

            THIS AGREEMENT made as of the     day of September, 2004.

RECITALS:

         (a)      InterOil Corporation (the "COMPANY"), Portside Growth and
                  Opportunity Fund, Manchester Securities Corp. and Provident
                  Premier Master Fund, Ltd. (collectively, the "INITIAL
                  PURCHASERS") entered into a securities purchase agreement,
                  dated August 26, 2004 (the "SECURITIES PURCHASE AGREEMENT")
                  providing the purchase of Debentures and Warrants.

         (b)      The Company proposes to issue an additional US$10,000,000
                  principal amount of Debentures (together with Warrants) as
                  provided in the Securities Purchase Agreement, and to issue
                  and additional US$5,000,000 principal amount of Debentures
                  (together with Warrants), which is not provided for in the
                  Securities Purchase Agreement.

         (c)      It is necessary to amend the Securities Purchase Agreement to
                  evidence the additional purchasers and to amend to Securities
                  Purchase Agreement to permit up to an aggregate of
                  US$45,000,000 principal amount of Debentures (together with
                  Warrants) to be issued at the Initial Closing and the
                  Subsequent Closing.

         (d)      This Amending Agreement evidences the consent of the parties
                  to the Securities Purchase Agreement to the amendments and
                  modifications to the Securities Purchase Agreement as set
                  forth below, including the addition of those persons listed on
                  Schedule "A" hereto as parties to the Securities Purchase
                  Agreement (the "SUBSEQUENT PURCHASERS").

         In consideration of the foregoing and the mutual agreements contained
herein (the receipt and adequacy of which are acknowledged), the Company, the
Initial Purchasers and each of the Subsequent Purchasers agree as follows:

SECTION 1         DEFINED TERMS

         In this Amending Agreement and the recitals hereto, unless otherwise
expressly provided, all capitalized terms shall have the meanings given to them
in the Securities Purchase Agreement.




                                      -2-


SECTION 2         SUBSEQUENT PURCHASERS

(1)      Each Subsequent Purchaser represents to the Initial Purchasers and the
         Company that it is an existing shareholder of the Company and a
         "non-U.S." Person (as defined under Rule 902 of Regulation S as
         promulgated by the United States Securities and Exchange Commission
         under the Securities Act of 1933, as amended (the "1933 Act")) as
         required by Section 1.1(b) of the Securities Purchase Agreement.

(2)      Schedule "A" hereto shall be deemed to amend the Schedule of Purchasers
         and the execution of this Amending Agreement shall satisfy the
         obligation of the Company to deliver an amended Schedule of Purchasers
         to the Initial Purchasers.

(3)      The Company shall issue and sell to each Subsequent Purchaser and such
         Subsequent Purchaser shall purchase from the Company on the Subsequent
         Closing Date (i) the aggregate principal amount of Debentures set forth
         opposite such Subsequent Purchaser's name on Schedule "A" and (ii)
         Warrants to purchase that number of Common Shares set forth opposite
         such Subsequent Purchaser's name on Schedule "A". The Company and the
         Subsequent Purchasers acknowledge that all conditions precedent to the
         Subsequent Closing have been fulfilled and that the Subsequent Closing
         will occur on September 1, 2004 or such other date as is no more than
         seven Trading Days following August 26, 2004.

(4)      Each Subsequent Purchaser, by executing this Amending Agreement, (i)
         confirms the accuracy of the representations and warranties as to it
         set forth in the Securities Purchase Agreement, as amended hereby,
         including, without limitation, the representations in Section 2.2(a) of
         the Securities Purchase Agreement and (ii) agrees that it shall be
         bound by all the terms and conditions set forth in the Securities
         Purchase Agreement, as amended hereby.

SECTION 3         AMENDMENTS TO THE SECURITIES PURCHASE AGREEMENT

         The Securities Purchase Agreement is amended, effective as of this
date, as follows:

         (a)      the references in Section 1.1(b) and Section 1.3(a)(ii) of the
                  Securities Purchase Agreement to "$10,000,000" are amended to
                  be "$15,000,000";

         (b)      the references to "60%" in Section 9.5(a) of the Securities
                  Purchase Agreement are amended to be "55%";




                                      -3-


         (c)      the parties to the Securities Purchase Agreement shall be the
                  Company, the Initial Purchasers and each of the Subsequent
                  Purchasers; and

         (d)      the address for notice of each of the Subsequent Purchasers
                  will be as set out in Schedule "A" hereto.

SECTION 4         REFERENCES

         Any reference to the Securities Purchase Agreement in any Debenture or
Warrant or in the Registration Rights Agreement shall mean the Securities
Purchase Agreement as amended hereby.

SECTION 5         AMENDMENT TO THE DEBENTURES

         The Initial Purchasers and the Company hereby agree that:

         (a)      the references to "4,000,000 Common Shares" in Section 3(f) of
                  the Debentures are amended to be "4,500,000 Common Shares";
                  and

         (b)      the references to "60%" in Section 3(e) of the Debentures are
                  amended to be "55%".

SECTION 6         FEES AND EXPENSES

         The reasonable fees and expense of counsel to the Initial Purchasers
related to this Amending Agreement shall be reimbursed by the Company up to a
maximum of US$7,000.

SECTION 7         NO WAIVER

         The parties hereby acknowledge and confirm that, except as specifically
amended by the provisions of this Amending Agreement, all of the terms and
conditions contained in the Securities Purchase Agreement are and shall remain
in full force and effect, unamended, in accordance with the provisions thereof.

SECTION 8         GOVERNING LAW.

         THIS AMENDING AGREEMENT SHALL BE GOVERNED BY AND INTERPRETED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO THE
PRINCIPLES OF CONFLICT OF LAWS. EACH PARTY HEREBY IRREVOCABLY SUBMITS TO THE
EXCLUSIVE JURISDICTION OF THE STATE AND FEDERAL COURTS SITTING IN THE CITY OF
NEW YORK, BOROUGH OF MANHATTAN, FOR THE ADJUDICATION OF ANY DISPUTE HEREUNDER OR
IN CONNECTION HEREWITH OR WITH ANY TRANSACTION CONTEMPLATED HEREBY OR DISCUSSED
HEREIN, AND HEREBY IRREVOCABLY WAIVES, AND AGREES NOT TO ASSERT IN ANY SUIT,
ACTION OR PROCEEDING, ANY CLAIM THAT IT IS NOT PERSONALLY SUBJECT TO THE
JURISDICTION OF ANY SUCH COURT, THAT SUCH SUIT,




                                      -4-


ACTION OR PROCEEDING IS BROUGHT IN AN INCONVENIENT FORUM OR THAT THE VENUE OF
SUCH SUIT, ACTION OR PROCEEDING IS IMPROPER. EACH PARTY HEREBY IRREVOCABLY
WAIVES PERSONAL SERVICE OF PROCESS AND CONSENTS TO PROCESS BEING SERVED IN ANY
SUCH SUIT, ACTION OR PROCEEDING BY MAILING A COPY THEREOF TO SUCH PARTY AT THE
ADDRESS FOR SUCH NOTICES TO IT UNDER THIS AMENDING AGREEMENT AND AGREES THAT
SUCH SERVICE SHALL CONSTITUTE GOOD AND SUFFICIENT SERVICE OF PROCESS AND NOTICE
THEREOF. NOTHING CONTAINED HEREIN SHALL BE DEEMED TO LIMIT IN ANY WAY ANY RIGHT
TO SERVE PROCESS IN ANY MANNER PERMITTED BY LAW. IF ANY PROVISION OF THIS
AMENDING AGREEMENT SHALL BE INVALID OR UNENFORCEABLE IN ANY JURISDICTION, SUCH
INVALIDITY OR UNENFORCEABILITY SHALL NOT AFFECT THE VALIDITY OR ENFORCEABILITY
OF THE REMAINDER OF THIS AMENDING AGREEMENT IN THAT JURISDICTION OR THE VALIDITY
OR ENFORCEABILITY OF ANY PROVISION OF THIS AMENDING AGREEMENT IN ANY OTHER
JURISDICTION. EACH PARTY HERETO IRREVOCABLY WAIVES ANY RIGHT TO TRIAL BY JURY.

SECTION 9         HEADINGS.

         The headings of this Amending Agreement are for convenience of
reference and shall not form part of, or affect the interpretation of, this
Amending Agreement.

SECTION 10        SEVERABILITY.

         If any provision of this Amending Agreement shall be invalid or
unenforceable in any jurisdiction, such invalidity or unenforceability shall not
affect the validity or enforceability of the remainder of this Amending
Agreement in that jurisdiction or the validity or enforceability of any
provision of this Amending Agreement in any other jurisdiction.

SECTION 11        COUNTERPARTS

         This Amending Agreement may be executed in any number of counterparts
and all of such counterparts taken together shall be deemed to constitute one
and the same instrument.





                                      -5-


         IN WITNESS WHEREOF the parties hereto have executed this Amending
Agreement on the date first referenced above.


                                         INTEROIL CORPORATION

                                         By:
                                            ------------------------------------
                                            Authorized Signing Officer




                                         PORTSIDE GROWTH AND OPPORTUNITY FUND

                                         By:
                                            ------------------------------------
                                            Authorized Signing Officer




                                         MANCHESTER SECURITIES CORP.

                                         By:
                                            ------------------------------------
                                            Authorized Signing Officer




                                         PROVIDENT PREMIER MASTER FUND, LTD.

                                         By:
                                            ------------------------------------
                                            Authorized Signing Officer





                      PURCHASER:

                                         By:
                                            ------------------------------------
                                            Authorized Signing Officer




                                  SCHEDULE "A"

<Table>
<Caption>
                                            PRINCIPAL
                                            AMOUNT OF       NUMBER OF
            SUBSEQUENT PURCHASER            DEBENTURES      WARRANTS        PURCHASE PRICE              ADDRESS FOR NOTICE
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                  
  1.    Middlemarch Partners Limited        $375,000        2,995           $375,000             Brant Investments Limited
                                                                                                 SL Level, Royal Bank Plaza
                                                                                                 South Tower, 200 Bay Street
                                                                                                 Toronto, ON M5J 2J5
- -----------------------------------------------------------------------------------------------------------------------------------
  2.    Middlemarch Partners Limited        $375,000        2,995           $375,000             Haywood Securities Inc.
                                                                                                 BCE Place, 181 Bay Street
                                                                                                 Suite 2910, P.O. Box 808
                                                                                                 Toronto, ON M5J 2T3
- -----------------------------------------------------------------------------------------------------------------------------------
  3.    TD Proprietary                      $500,000        3,993           $500,000             Investerco
                                                                                                 77 Bloor Street West
                                                                                                 3rd Floor
                                                                                                 Toronto, ON M4Y 2T1
- -----------------------------------------------------------------------------------------------------------------------------------
  4.    Kings Road Investments Limited      $2,950,000      23,561          $2,950,000           UBS Securities LLC
                                                                                                 667 Washington Blvd.
                                                                                                 9th Floor
                                                                                                 Stamford, CT06901
- -----------------------------------------------------------------------------------------------------------------------------------
  5.    Waterfall Vanilla LP                $330,000        2,635           $330,000             CIBC Wood Gundy
                                                                                                 161 Bay Street, 5th Floor
                                                                                                 Toronto, ON M9J 2S8
- -----------------------------------------------------------------------------------------------------------------------------------




                                      -2-

<Table>
<Caption>
                                            PRINCIPAL
                                            AMOUNT OF       NUMBER OF
            SUBSEQUENT PURCHASER            DEBENTURES      WARRANTS        PURCHASE PRICE              ADDRESS FOR NOTICE
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                  
  6.    Waterfall Tipping Point LP          $70,000         559             $70,000              CIBC Wood Gundy
                                                                                                 161 Bay Street, 5th Floor
                                                                                                 Toronto, ON M9J 2S8
- -----------------------------------------------------------------------------------------------------------------------------------
  7.    AIG Global Investment Corp.         $2,500,000      19,967          $2,500,000           AIG Global Investment Corp.
        (Canada)                                                                                 (Canada)
                                                                                                 C/O Royal Trust
                                                                                                 Royal Trust Plaza
                                                                                                 South Plaza, 2nd Floor
                                                                                                 Toronto, ON M5J 2J6
- -----------------------------------------------------------------------------------------------------------------------------------
  8.    TD Asset Management Inc.            $214,000        1,709           $214,000             CIBC Mellon GSS Company
                                                                                                 Securities Level
                                                                                                 Commerce Court West
                                                                                                 Toronto, ON M5L 1G9
- -----------------------------------------------------------------------------------------------------------------------------------
  9.    TD Asset Management Inc.            $214,000        1,709           $214,000             CIBC Mellon GSS Company
                                                                                                 Securities Level
        (a split of one purchase of                                                              Commerce Court West
        $428,000)                                                                                Toronto, ON M5L 1G9
- -----------------------------------------------------------------------------------------------------------------------------------
 10.    TD Asset Management Inc.            $72,000         575             $72,000              TD Waterhouse
                                                                                                 Securities Department
                                                                                                 3rd Floor
                                                                                                 77 Bloor Street West
                                                                                                 Toronto, ON M5S 1M2
- -----------------------------------------------------------------------------------------------------------------------------------
 11.    Front Street Investment             $1,000,000      7,978           $1,000,000           87 Front Street East
        Management                                                                               Suite 400
                                                                                                 Toronto, ON M5E 1B8
- -----------------------------------------------------------------------------------------------------------------------------------






                                      -3-

<Table>
<Caption>
                                            PRINCIPAL
                                            AMOUNT OF       NUMBER OF
            SUBSEQUENT PURCHASER            DEBENTURES      WARRANTS        PURCHASE PRICE              ADDRESS FOR NOTICE
- -----------------------------------------------------------------------------------------------------------------------------------
                                                                                  
 12.    BTR Global Arbitrage Trading        $4,000,000      31,948          $4,000,000           C/O Ogier Fiduciary Services
        Limited                                                                                  (Cayman) Limited
                                                                                                 P.O. Box 1234 GT
                                                                                                 Queensgate House
                                                                                                 South Church Street
                                                                                                 George Town, Grand Cayman,
                                                                                                 Cayman Islands
- -----------------------------------------------------------------------------------------------------------------------------------
 13.    Centrum Bank AG                     $2,400,000      19,168          $2,400,000           Centrum Bank AG
                                                                                                 Postfach 1168
                                                                                                 FL-9490 Vaduz
                                                                                                 Liechenstein
- -----------------------------------------------------------------------------------------------------------------------------------
</Table>