Exhibit 10.5

THIS CONTRACT CONTAINS RELEASE AND INDEMNITY OBLIGATIONS

MASTER SERVICE CONTRACT

THIS
AGREEMENT (this "Contract"), made and entered into and shall be effective as of this 27 day of January, 2004, by and between the parties herein designated as "Company" and
"Contractor".

|Company:    |  | Natural Gas Systems Corporation, its subsidiaries and other affiliates.                                                                                                                                
|----------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Address:    |  | 820 Gessner, Suite 1340
Houston, Texas 77024                                                                                                                                                           
|Contractor: |  | Verdisys, Inc., its subsidiaries, divisions and other affiliates                                                                                                                                       
|Address:    |  | The individual, subsidiary, division or affiliate providing services shall be deemed Contractor with respect to such services and shall provide its address for notice purposes before commencing same.

WITNESSETH: THAT,

WHEREAS, Company in the course of such operations regularly and customarily enters into contracts with independent
contractors for the performance of service relating thereto; and

WHEREAS,Company desires, as a matter of company policy, to establish and maintain an approved list of Contractors and to offer work or
contracts only to those Contractors who are included on such approved list; and

WHEREAS,Contractor represents that it has adequate equipment in good working order and fully trained personnel capable of efficiently
operating such equipment and performing services for Company.

NOW THEREFORE IN CONSIDERATIONof the mutual promises, conditions and agreements herein contained, the sufficiency of which is hereby
acknowledged, and the specifications and special provisions set forth in the exhibits attached hereto and made a part hereof, the parties mutually agree as follows:

1.0 AGREEMENT



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2.0 LABOR, WARRANTY, EQUIPMENT, MATERIALS, SUPPLIES AND SERVICES



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3.0 PAYMENT



4.0 REPORTS TO BE FURNISHED BY CONTRACTOR



5.0 INDEPENDENT COMPANY RELATIONSHIP



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6.0 INDEMNITY OBLIGATIONS



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7.0 INSURANCE



8.0 THIRD PARTY BENEFICIARIES



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9.0 TAXES AND CLAIMS



10.0 LAWS, RULES AND REGULATIONS



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11.0 FORCE MAJEURE



12.0 PATENTS



13.0 ASSIGNMENTS



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14.0 TERMINATION OF WORK



15.0 GIFTS AND GRATUITIES



16.0 ILLEGAL DRUGS, ALCOHOL, AND FIREARMS



17.0 GOVERNMENT REGULATIONS



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18.0 SPECIAL PROVISIONS



19.0 NOTICES

Company:

Natural Gas Systems Corporation
820 Gessner, Suite 1340
Houston, Texas 77024
Office: 713-935-0122
Fax: 713-935-0199Contractor:

Verdisys Inc.
25025 I-45, Suite 525
The Woodlands, Texas 77380
Office: 281-364-6999
Fax: 281-364-8007


20.0 ACCEPTANCE OF CONTRACT

IN WITNESS WHEREOF, the parties hereto have executed this Contract upon the date above shown in several counterparts, each of which shall be considered as an
original.

|COMPANY |           | CONTRACTOR
|------- | --------- | ----------
|By:     |           |           
|Title:  | President |           
|Date:   |           |           

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INSURANCE
Exhibit A

Contractor
shall carry insurance (with reliable insurance companies that are satisfactory to Company) in the minimum amounts set forth below, such insurance to be effective prior to the commencement
of any work under this Contract. In each such policy, to the extent of the liabilities agreed to be assumed by Contractor, Contractor shall cause (i) all deductibles to be for Contractor's
account, (ii) the insurer to waive all rights of subrogation against Company Group, (iii) Company Group to be listed as additional insureds, and (iv) such policy to be primary as
to any other existing valid and collectible insurance of Company Group or otherwise. Before engaging in any work hereunder, Contractor shall furnish Company an executed Certificate of Insurance (in
form satisfactory to Company) evidencing the foregoing insurance. Contractor shall cause each insurer to agree to give Company at least thirty days written notice of cancellation or expiration of any
such policies or of any other changes that would materially reduce the limits of coverage of such policies. Notwithstanding any provision herein to the contrary, failure to secure the insurance
coverage, or the failure to comply fully with any of the insurance provisions of this Contract, or the failure to secure such endorsements on the policy as may be necessary to carry out the terms and
provisions of this contract, (x) shall in no way act to relieve Contractor from the obligations of this Contract, and (y) shall constitute grounds for the immediate termination of this
Contract by Company (in addition to any other rights or remedies available to the Company).

Excess
Liability Insurance over and above the coverages listed above in the amount of not less than $2,000,000.

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