EXHIBIT 10.11


                           PURCHASE AND SALE AGREEMENT


THIS PURCHASE AND SALE  AGREEMENT  ("Agreement")  is entered into as of the 30th
day of March 2005, by and between James Timothy Roche ("Seller")," and Petrogen,
Inc. ("Buyer').

                                   WITNESSETH

WHEREAS,  Seller owns  one-hundred  percent (100%) of the pipeline,  facilities,
equipment and contracts described on Exhibit "A" (collectively, the "Pipeline");
and

WHEREAS,  Seller  has  agreed to sell and Buyer has  agreed to  purchase  all of
Seller's right, title and interest in the Pipeline.

NOW THEREFORE,  in  consideration  of the premises and the mutual  covenants and
benefits to be derived  from this  Agreement,  Seller and Buyer  hereby agree as
follows:

                             ARTICLE 1 - TRANSACTION

Seller shall sell,  transfer and assign to Buyer one hundred  percent  (100%) of
its right,  title and interest in the Pipeline (as well as all of the  documents
available  to Seller  that  pertain to the  construction  and  operation  of the
Pipeline, including any as built drawings,  hydrostatic test reports and welding
certifications  and  including  any  agreements  or records  for the  ownership,
operation and  maintenance  of the Pipeline or pipeline:  interconnects)  by the
delivery to.  Buyer,  of the  executed  Pipeline-Bill  of Sale and  Right-of-Way
Assignment ("Assignment") attached hereto as Exhibit 'B."

In consideration for the Assignment, Buyer shall

     i)   Within ten business  days of closing,  deliver one hundred and seventy
          five  thousand  (175,000)  common  share shares of Petrogen  Corp,  to
          Seller,  such  shares to be  restricted  as  provided  in Exhibit  "C"
          attached hereto.

     ii)  For the account of Seller,  pay George Bishop ten cents (10(cent)) for
          each thousand  cubic .feet (mcf) of gas produced by Buyer from Buyer's
          Hawes  Field,  not  to  exceed  a  total  of  fifty  thousand  dollars
          ($50,000.00).

     iii) Until  such time as the  amount  paid  George  Bishop by Buyer for the
          account of Seller  totals fifty  thousand  dollars  ($50,000.00),  pay
          Seller six cents  (6(cent)) for each thousand  cubic feet (mcf) of gas
          produced by Buyer from Buyer's Hawes Field.  For production  after the
          amount  paid George  Bishop by Buyer for the account of Seller  totals
          fifty  thousand   dollars   ($50,000.00),   pay  Seller  twelve  cents
          (12(cent)) for each thousand cubic feet (mcf) of gas produced by Buyer
          from Buyer's  Hawes Field to a total amount of four billion cubic feet
          (bcf) of gas produced from the field.


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                     ARTICLE 2 - CLOSING AND EFFECTIVE DATE


Title  to the  Pipeline  shall  transfer  and  the  Dosing  of the  transactions
contemplated  hereby  (the  "Closing,,)  shall  take  place at the same  time as
execution of this Agreement.  All Closing  transactions  shall be deemed to have
occurred simultaneously.

The date of Closing shall be the effective date (the  "Effective  Date") of this
transaction

                              ARTICLE 3 - DOCUMENTS

Upon execution of this Agreement,  Seller will provide to Buyer all of documents
that pertain to the  construction  and operation of the Pipeline,  including any
"as-build' drawings,  hydrostatic test reports and welding  certifications,  and
including any agreements or records for the operation  and.  maintenance of the.
Pipeline or pipeline interconnects.

                   ARTICLE 4 - REPRESENTATIONS AND WARRANTIES

To Seller's knowledge,  there are no required consents to assign or preferential
rights affecting the Pipeline or this transaction.

Buyer represents that it has inspected the Pipeline and acknowledges  that it is
familiar with tile. condition aced the. fitness of the Pipeline.

IT IS EXPRESSLY  UNDERSTOOD AND AGREED BY THE PARTIES THAT THE PIPELINE IS BEING
TRANSFERRED ON AN "AS IS, WHERE IS" BASIS WITH ALL.  FAULTS AND DEFECTS AND THAT
SELLER  MAKES NO  WARRANTIES,  EITHER  EXPRESS  OR  IMPLIED,  AS TO THE  PRESENT
CONDITION OR SAFETY OF THE PIPELINE,  ITS MERCHANTABILITY OR ITS FITNESS FOR ANY
PARTICULAR PURPOSE.

Seller warrants that it has good,  clear and  unencumbered  title to one hundred
percent (100%) of the Pipeline.

                               ARTICLE 5 - RELEASE


BUYER EXPRESSLY AGREES TO PAY, PERFORM, FULFILL AND DISCHARGE ALL CLAIMS, COSTS,
EXPENSES,   LIABILITIES  AND  OBLIGATIONS  RELATING  TO  OWNING,  OPERATING  AND
MAINTAINING  THE  PIPELINE  (`CLAIMS"),  INSOFAR AND ONLY INSOFAR AS SUCH CLAIMS
ACCRUED OR AROSE ON AND AFTER THE EFFECTIVE DATE.

SELLER  EXPRESSLY  AGREES TO RETAIN,  PAY,  PERFORM,  FULFILL AND  DISCHARGE ALL
CLAIMS,  INSOFAR AND ONLY  INSOFAR AS SUCH CLAIMS  ACCRUED OR AROSE PRIOR TO THE
EFFECTIVE DATE.


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                             ARTICLE 6 - INDEMNITIES


INDEMNITIES BY SELLER - Seller will protect,  defend,  indemnity and hold Buyer,
its  subsidiaries and affiliated  companies,  free and harmless from and against
any and all losses,  deaths,  Injuries,  claims,  liens,  demands, and causes of
action  of  every  kind and  character,  including  the  amounts  of  judgments,
penalties,   interest,  court  costs,  investigation  expenses  and  costs,  and
reasonable  legal fees  incurred by Buyer in defense of same arising in favor of
any government  agencies,  third  parties,  contractors  or  subcontractors,  on
account of claims, liens, debts, personal injuries,  death or damage to property
arising out of or resulting from acts or omissions occurring before Closing, but
excluding  any and all costs  associated  with the physical  abandonment  of the
Pipeline.

INDEMNITIES  BY BUYER - Buyer will protect,  defend,  indemnify and hold Seller,
its  subsidiaries and affiliated  companies,  free and harmless from and against
any and all losses,  deaths,  injuries,  claims,  liens,  demands, and causes of
action  of  every  kind and  character,  including  the  amounts  of  judgments,
penalties,   interest,  court  costs,  investigation  expenses  and  costs,  and
reasonable  legal fees incurred by Seller In defense of same arising in favor of
any government  agencies,  third  parties,  contractors  or  subcontractors,  on
account of claims, liens, debts, personal injuries,  death or damage to property
arising  out of or  resulting  -from  acts or  omissions  occurring  on or after
Closing.

DEFENSE  OF CLAIMS - The party  entitled  to  indemnification  pursuant  to this
Article  (the   "Indemnified   Party")  shall  notify  the  other  party  .("the
Indemnifying  Party") in writing of the nature of any claim by a third party for
which  indemnification  is  sought  under  this  Agreement  promptly  after  the
assertion  thereof.  The Indemnifying  Party shall be entitled to participate at
its own expense in the defense,  or if the  Indemnifying  Party so elects with a
-reasonable  tine after  receipt of such  -notice,  to assume the defense of any
suit brought to enforce such claim.  In the event of any suit,  the  Indemnified
Party and Indemnifying  Party shall cooperate with each other in connection with
the defense thereof.

                                ARTICLE 7 - TAXES


Any taxes  assessed for periods ending prior to Closing shall be borne solely by
Seller. Any taxes assessed for all periods on or after Closing shall be borne by
Buyer,  its successors and assigns.  All sales,  use and other transfer taxes or
fees associated with the sale, assignment, transfer of possession or delivery of
the Pipeline, or any agreement,  instrument or certificate associated therewith,
shall be paid by Buyer.


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                            ARTICLE 8 - MISCELLANEOUS


This Agreement,  together with the Assignment,  constitutes the entire agreement
between the parties with respect to the subject matter hereof and supersedes al!
prior agreements and understandings, both written and oral.

This Agreement shall be binding upon and inure to the benefit of the parties and
their respective successors and permitted assigns.

From  time-to-time  following  the  Closing,  at the request of either party and
without further consideration, the other party shall execute and deliver to such
requesting  party such  instruments  and  documents  and take such  action  (but
without  incurring any material  financial  obligation) as requesting  party may
reasonably  request  in order to  consummate  more  fully  and  effectively  the
transactions contemplated under this Agreement.

IN WITNESS  WHEREOF,  the parties  have  executed  this  Agreement,  in multiple
originals, on the date first set forth above

                                         SELLER

                                         JAMES TIMOTHY ROCHE

WITNESSES:

/s/                                      By: /s/ JAMES T. ROCHE

/s/

                                         BUYER

                                         PETROGEN INC.

______________________                   By: /s/ ______________________________

______________________                   Title: C.E.O.
                                                _______________________________


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                                   EXHIBIT "C"

             RESTRICTED SECURITIES AND DISPOSITION UNDER "RULE 144"


2.1 NO REGISTRATION The Subscriber acknowledges and understands that neither the
sale of the  nits  which  the  Subscriber  is  acquiring  nor  any of the  Units
themselves have been registered under the United States  Securities Act of 1933,
as amended (the VS. Act") or any state securities laws, and,  furthermore,  that
the Securities must b(R) held indefinitely unless subsequently  registered under
the U.S, Act or an exemption from such registration is available.

2.2 LENDING OF THE SECURITIES.  The Subscriber also acknowledges and understands
t e certificates  representing the Securities will be stamped with the following
legend  (or  substantially  equivalent  language)  restricting  transfer  in the
following manner:

     'The securities  represented by this  certificate  have not been registered
     under the United States Securities Act of 1933, as amended,  or the laws of
     any state, and have been issued pursuant to an exemption from  registration
     pertaining  to such  securities  and  pursuant to a  representation  by the
     security  holder named hereon that said  securities  have been acquired for
     purposes  of  investment  and  not  for  purposes  of  distribution.  These
     securities may not tie offered, sold, transferred,  pledged or hypothecated
     in the absence of  registration,  or the  availability of an exemption from
     such  registration.  Furthermore,  no  offer,  sale,  transfer,  pledge  or
     hypothecation  is to take  place  without  the prior  written  approval  of
     counsel  to the  Company  being  affixed  to this  certificate.  The  stock
     transfer agent has been ordered to effectuate transfers of this certificate
     only in accordance with the above instructions.(degree).

         The Subscriber  hereby consents to the Company making a notation on its
records or giving  instructions to any transfer agent of the Securities in order
to implement the restrictions on transfer set forth and described hereinabove,


2.3 DISPOSITION UNDER RULE 144. The Subscriber also acknowledges and understands
that:

     (a)  the Securities are  restricted  securities  within the meaning of Rule
          144 promulgated under the U.S. Act;

     (b)  the exemption from  registration  under Rule 144 will not be available
          in any  event  for at least  one year  from rte date of  purchase  and
          payment  of the  Units by the  Subscriber,  and even  then will not be
          available unless (i a public trading market then exists for the common
          stock of the Company, (ii) adequate information


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          concerning the Company is then available to the public and (iii) other
          terms and conditions of Rule 144 are complied with; and

     (c)  any  sale of the  Securities  may be made  by the  Subscriber  only in
          limited amounts in accordance with such terms and conditions.

2.4 FURTHER RESTRICTIONS ON DISPOSITIONThe Subscriber further
acknowledges an un erstands that, ' out in anyway limiting the acknowledgements
and  understandings  as set forth  hereinabove,  the Subscriber  agrees that the
Subscriber  shall in no event make any  disposition of ail or any portion of the
Securities which the Subscriber is acquiring hereunder unless and until:


     (a)  there Is then in effect a "Registration  Statement' under the U.S. Act
          covering such proposed  disposition  and such  disposition  is made in
          accordance with said Registration Statement; or

     (b)(i) the  Subscriber  shall have  notified  the  Company of the  proposed
          disposition  and shell  have  furnished  the  Company  with a detailed
          statement of the circumstances  surrounding the proposed  disposition,
          (iii) the Subscriber  shall have furnished the Company with an opinion
          of the  Subscriber's  own counsel to the effect that such  disposition
          will not require  registration of any such  Securities  under the U.S.
          Act and (iii) such opinion of the Subscriber's counsel shall have been
          concurred  in by counsel for the  Company  and the Company  shall have
          advised the Subscriber of such concurrence.


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