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


                                  SCHEDULE 13D
                    Under the Securities Exchange Act of 1934



                             PYR ENERGY CORPORATION
                                (Name of Issuer)


                         COMMON STOCK, $0.001 PAR VALUE
                         (Title of Class of Securities)

                                    693677106
                                 (CUSIP Number)

                                Annabel M. Jones
                  Assistant General Counsel - Corporate Affairs
                            Samson Investment Company
                             Two West Second Street
                              Tulsa, Oklahoma 74103
                                 (918) 591-1006
                  (Name, address and telephone number of person
                authorized to receive notices and communications)

                                 With a copy to:

                                 R. Scott Cohen
                           Weil, Gotshal & Manges LLP
                          200 Crescent Court, Suite 300
                                Dallas, TX 75201

                                 January 4, 2007
             (Date of event which requires filing of this Statement)

If the filing person has previously  filed a statement on Schedule 13G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of ss.ss.240.13d-1(e),  240.13d-1(f) or 240.13d-1(g), check the
following box.
               ---

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the  schedule,  including  all exhibits.  See  ss.240.13d-7  for other
parties to whom copies are to be sent.


* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.


The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).


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CUSIP No. 693677106                 13D                     Page 2



1     NAME OF REPORTING PERSON
      I.R.S. IDENTIFICATION NO. OF ABOVE PERSON (entities only)

      Samson Investment Company

2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                  (a)          (b)  X
                     ---           ---
3     SEC USE ONLY

4     SOURCE OF FUNDS
      WC

5     CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
      REQUIRED PURSUANT TO ITEM 2(d) or 2(e)
                                             -----

6     CITIZENSHIP OR PLACE OF ORGANIZATION

      Nevada

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

      7     SOLE VOTING POWER                   3,689,200

      8     SHARED VOTING POWER                 -0-

      9     SOLE DISPOSITIVE POWER              3,689,200

      10    SHARED DISPOSITIVE POWER            -0-

11    AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      3,689,200

12    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 11
      EXCLUDES CERTAIN SHARES
                              ----

13    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 11
      9.7% (1)

14    TYPE OF REPORTING PERSON
      CO
------------
(1)  Based  on  37,993,259  shares  of  Pyr  Energy   Corporation  common  stock
outstanding  as of November 15, 2006,  as reported in its Annual  Report on Form
10-KSB filed with the Securities and Exchange Commission on November 22, 2006.

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Item 1.           Security and Issuer

      The class of equity  securities  to which this  statement  on Schedule 13D
relates  is the  common  stock,  par  value  $0.001  per  share,  of Pyr  Energy
Corporation,  a Maryland  corporation  (the "Issuer").  The principal  executive
offices of the Issuer are located at 1675 Broadway, Suite 2450, Denver, Colorado
80202.

Item 2.           Identity and Background

      (a) - (c) This  Statement  is being  filed by  Samson  Investment  Company
("Samson"),  a Nevada  corporation  with its  principal  place of  business  and
principal  office  located at Two West Second  Street,  Tulsa,  Oklahoma  74103.
Samson  is  a  holding  company  which,  among  other  things,  engages  in  the
exploration and development of oil and gas through its wholly owned  subsidiary,
Samson Resources Company, an Oklahoma corporation. Stacy Schusterman, as trustee
of various  family trusts,  holds voting and  investment  power over 100% of the
issued and outstanding capital stock of Samson.

      The name, business address and present principal  occupation or employment
of each  executive  officer  and  director of Samson are set forth on Schedule A
hereto and incorporated herein by reference.

      (d) During the last five years,  neither Samson nor, to the best knowledge
of Samson,  any person  named on  Schedule  A has been  convicted  in a criminal
proceeding (excluding traffic violations or similar misdemeanors).

      (e) During the last five years,  neither Samson nor, to the best knowledge
of Samson, any person named on Schedule A was a party to a civil proceeding of a
judicial or  administrative  body of competent  jurisdiction  and as a result of
such proceeding was or is subject to a judgment, decree or final order enjoining
future violations of, or prohibiting or mandating activities subject to, federal
or state securities laws or finding any violation with respect to such laws.

      (f) The  citizenship of each  executive  officer and director of Samson is
set forth on Schedule A.

Item 3.           Source and Amount of Funds or Other Consideration

      The  aggregate  amount of funds used by Samson to purchase  the  3,689,200
shares  of Issuer  common  stock  beneficially  owned by it (the  "Shares")  was
approximately $3.6 million, including commissions.

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      The funds used to purchase the Shares were obtained from Samson's  working
capital.

Item 4.           Purpose of Transaction

      Samson's  initial  acquisitions  of  shares of Issuer  common  stock  were
effected for investment purposes. In connection with its most recent acquisition
of shares of Issuer common stock,  however,  Samson began evaluating  whether to
make an offer to acquire  the  Issuer or a  material  portion of its oil and gas
properties.  That evaluation is ongoing and no final determination has been made
at this time.  Samson may, and reserves the right to, acquire  additional shares
of Issuer common stock at any time and from time to time in the open market,  in
privately  negotiated  transactions  or  otherwise.  In  addition,   Samson  may
determine  to  dispose  of all or any  portion of the Shares at any time or from
time to  time in the  open  market,  in  privately  negotiated  transactions  or
otherwise.

      Except as referenced above,  neither Samson,  nor to the best knowledge of
Samson,  any of the  persons  named  on  Schedule  A  hereto,  has any  plans or
proposals  of the types  referred  to in clauses  (a)  through  (j) of Item 4 of
Schedule 13D.

Item 5.           Interest in Securities of Issuer

      (a) As of the close of business on January 15, 2007,  Samson  beneficially
owned an aggregate of 3,689,200 shares of Issuer common stock, representing 9.7%
of the outstanding  shares of Issuer common stock (based on 37,993,259 shares of
Issuer  common stock  outstanding  as of November  15, 2006,  as reported in Pyr
Energy  Corporation's Annual Report on Form 10-KSB filed with the Securities and
Exchange  Commission on November 22, 2006).  All of such shares are held through
Eason  Drilling & Services  Company,  a Delaware  corporation  and wholly  owned
subsidiary of Samson.

      (b) Samson has the sole  power to vote,  direct the voting of,  dispose of
and direct the disposition of the Shares.

      (c) The transactions in the shares of Issuer common stock by Samson during
the past 60 days are set forth on Schedule B hereto and  incorporated  herein by
reference.

                                      -4-



      (d) No other  person is known to have the right to receive or the power to
direct the receipt of  dividends  from,  or the  proceeds  from the sale of, the
Shares.

      (e) Not applicable.

Item 6.           Contracts, Arrangements, Understandings or  Relationships With
Respect to Securities of the Issuer

      Neither  Samson nor, to the best  knowledge of Samson,  any of the persons
named on  Schedule  A hereto has any  contract,  arrangement,  understanding  or
relationship with any person with respect to any securities of the Issuer.

Item 7.     Material To Be Filed As Exhibits

      Not applicable.



                                      -5-






                                    SIGNATURE

      After  reasonable  inquiry and to the best of my knowledge  and belief,  I
certify that the information  set forth in this statement is true,  complete and
correct.

Dated: January 16, 2007
                                          SAMSON INVESTMENT COMPANY


                                          By: //s// Jack A. Canon
                                          ---------------------------
                                          Name:  Jack A. Canon
                                          Title: Senior Vice President-
                                                 General Counsel



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