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Method for simplifying coalbed methane gathering and transporting technology by using Venturi ejector

A venturi and coalbed methane technology, applied in gas/liquid distribution and storage, pipeline systems, mechanical equipment, etc., can solve the problems of high manpower, material resources, and high operating costs, and achieve simplified gathering and transportation processes, reduced depreciation costs and The effect of production and maintenance costs

Inactive Publication Date: 2018-12-21
中国石油化工股份有限公司临汾煤层气分公司
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  • Claims
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Problems solved by technology

[0003] Among them, if the gas produced by the well groups not within the coverage of the gas gathering station is to be transported to the dehydration station of the gas gathering center for export, a new gas gathering station needs to be built, which involves land acquisition, design, supporting construction, post-station operation and maintenance, etc. On the one hand, it needs to spend a lot of manpower and material resources, and the construction and later operation costs are relatively high

Method used

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  • Method for simplifying coalbed methane gathering and transporting technology by using Venturi ejector
  • Method for simplifying coalbed methane gathering and transporting technology by using Venturi ejector

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Embodiment

[0012] Yanchuan South Coalbed Gas Field takes the existing reserve resources of the No. 2 coal seam of the Permian Shanxi Formation as the development object, and has built (1#, 2#, 3#, 4#) 4 gas gathering stations and 1 central dehydration station, of which 4# The gas-gathering station and the central dehydration station are combined to form a gas-gathering central dehydration station. Gathering pipelines are built between the gas gathering station and the dehydration station of the gas gathering center. The overall layout of the 500 million m3 production and construction surface project of Yanchuan South Coalbed Methane adopts the second-level gas-gathering station layout method to set up the station. It is transported to the dehydration station of the gas gathering center for repressurization, deep dehydration, and export.

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Abstract

The invention discloses a method for simplifying a coalbed methane gathering and transporting technology by using a Venturi ejector. The method comprises the following steps that the Venturi ejector is used for "replacing a gas collecting station", a set of Venturi ejector with a higher degree of automation is constructed at the T junction between a main trunk line from the gas collecting stationto a gas gathering center dehydration station and a main trunk line of a well group platform. The method for simplifying the coalbed methane gathering and transporting technology by using the Venturiejector realizes to transport gas produced by a well group to the gas gathering station for export sales, and meanwhile, the gathering and transporting technology of the coalbed methane is simplified,the construction of a new station is avoided, and the depreciation cost and production maintenance cost are greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of coal bed gas exploitation, and in particular relates to a method for simplifying the coal bed gas gathering and transportation process by using a Venturi ejector. Background technique [0002] At present, the overall layout of the production and construction surface engineering of coalbed methane fields adopts the second-level gas-gathering station layout method to set up the stations. The gas-gathering station and the central dehydration station are built, and a gathering and transportation pipeline is built between the gas-gathering station and the gas-gathering central dehydration station. After the coalbed methane output from the well site platform enters the gas gathering station for preliminary dehydration and pressurization, it is transported to the dehydration station of the gas gathering center through the main gas gathering line for further pressurization, deep dehydration, and export. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/02F17D1/065
Inventor 金鑫菜少辉朱坤施杰赵明唐振华冯展孟凡生
Owner 中国石油化工股份有限公司临汾煤层气分公司
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