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Systems and methods for producing cng and ngls from raw natural gas, flare gas, stranded gas, and/or associated gas

a technology of raw natural gas and stranded gas, which is applied in the field of systems and methods for producing cng and ngls from raw natural gas, flare gas, stranded gas, and/or associated gas, and can solve problems that have not been achieved before by mobile systems

Inactive Publication Date: 2015-08-20
PIONEER ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The system enables the simultaneous production of lean CNG and transportable NGLs, reducing flaring, minimizing environmental impact, and providing a cost-effective solution for utilizing stranded gas resources, thereby addressing the financial and environmental disadvantages of current methods.

Problems solved by technology

This has not been achieved previously by mobile systems in a field environment.

Method used

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  • Systems and methods for producing cng and ngls from raw natural gas, flare gas, stranded gas, and/or associated gas
  • Systems and methods for producing cng and ngls from raw natural gas, flare gas, stranded gas, and/or associated gas
  • Systems and methods for producing cng and ngls from raw natural gas, flare gas, stranded gas, and/or associated gas

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Embodiment Construction

[0048]The following description is merely exemplary in nature and is in no way intended to limit the scope of the present disclosure, application, or uses.

DEFINITIONS

[0049]The following terms of art shall have the below ascribed meanings throughout this specification, unless otherwise stated.

[0050]Throughout this disclosure “MAGS-200,”“full scale” apparatus, or any reference to a single full-scale module, will refer to an apparatus module that can process 200 mcf (thousand cubic feet) of raw natural gas per day. Assuming a typical Bakken gas composition illustrated in Table 1, the MAGS-200 unit would produce approximately 1700 gallons of natural gas liquids (˜46 mcf of gas equivalent, ˜23% of the total volume of flare gas), ˜100-120 mcf of lean methane (˜58% of the total volume of flare gas), and ˜25-40 mcf of an ethane-rich stream (˜19% of the total volume of flare gas). Multiple modules can be combined for higher gas flow rates. These product flow estimates are based on a sample a...

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Abstract

The present invention is a field-deployable system for producing compressed natural gas (CNG) and natural gas liquids (NGLs) from a raw gas stream comprising a compressor; a dehydrator; a refrigerator having one or more stages; and a separation subsystem adapted to separate the raw gas stream into three useable product streams: a methane stream that is at least 70% methane, an ethane-rich stream, and a NGLs stream having a vapor pressure of no more than 17 bar (250 psi) at 38° C. (100° F.). The methane stream is sufficiently lean to be useable in existing natural gas engines without modification, and is compressed to produce CNG. The system can be utilized to capture and provide value to stranded or flared gas from liquids-rich gas production sites, by producing natural gas liquids for transport, and CNG which can be transported and is suitable for use in existing gas generators, vehicles, and / or trucks.

Description

REFERENCE TO RELATED APPLICATIONS[0001]This application is a Continuation-In-Part (“bypass CIP”) and claims the benefit of earlier-filed International Application No. PCT / US2014 / 042437, filed Jun. 14, 2014 and entitled “Systems And Methods For Separating Alkane Gases With Applications To Raw Natural Gas Processing And Flare Gas Capture”, which itself claims priority from U.S. Ser. No. 14 / 086,031, filed on Nov. 21, 2013, entitled “SYSTEMS AND METHODS FOR SEPARATING ALKANE GASES WITH APPLICATIONS TO RAW NATURAL GAS PROCESSING AND FLARE GAS CAPTURE,” as well as claims priority from U.S. Ser. No. 61 / 836,220, filed on Jun. 18, 2013, entitled “Mobile Alkane Gas Separator,” the entirety of all of which are hereby incorporated by reference herein.FIELD OF THE INVENTION[0002]The present invention relates to enabling the utilization of raw natural gas, such as flare gas, stranded gas, associated gas, and so on, for power generation and liquids capture. More specifically, this invention relate...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): F25J3/02F25J3/08
CPCC10G5/06C10L3/10C10L3/101C10L3/106C10L2290/30C10L2290/46C10L2290/567C10L2290/58C10L2290/60F25J3/0209F25J3/0233F25J3/0238F25J3/0242F25J3/08F25J2200/02F25J2200/70F25J2205/04F25J2205/60F25J2205/66F25J2205/70F25J2215/62F25J2220/68F25J2230/22F25J2230/30F25J2240/80F25J2260/60F25J2270/12F25J2270/18F25J2270/60F25J2270/66F25J2290/42F25J2290/70G05B15/02H04W76/10
Inventor ZUBRIN, ROBERT M.SARGSYAN, GEVORGHOTTON, KEVINLEWIS, MATTHEWYOUNG, ANDREW
Owner PIONEER ENERGY