Collaborative exploitation and cyclic utilization device and method for coal bed gas and oil gas

A technology for coalbed methane and oil and gas, applied in the field of co-associated resource exploitation, can solve problems such as hidden dangers of coalbed methane safety, and achieve the effect of saving human, material and financial resources.

Pending Publication Date: 2022-07-01
SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of oil and gas in wells remaining after oil and gas mining will bring huge safety hazards to the mining of coalbed methane.

Method used

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  • Collaborative exploitation and cyclic utilization device and method for coal bed gas and oil gas
  • Collaborative exploitation and cyclic utilization device and method for coal bed gas and oil gas
  • Collaborative exploitation and cyclic utilization device and method for coal bed gas and oil gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A coalbed methane + oil and gas collaborative exploitation and recycling device, comprising a cracking and sealing mechanism and a surface transfer mechanism; wherein,

[0044] The fracturing and storage mechanism includes a coalbed methane extraction device and an oil and gas extraction device; the coalbed methane extraction device includes a main input pipe 12 , a separation conveying pipe 14 , a coalbed methane fracturing and extraction joint pipe 15 and a main extraction pipe, which are connected in sequence. Union 16;

[0045] The oil and gas extraction device includes a secondary input pipe 21, a secondary separation and conveying pipe 14, an oil and gas fracturing and extraction pipe 22 and a secondary extraction pipe connected in sequence; the secondary input pipe 21 is connected with the main input pipe 12, and the two The secondary drainage pipe is connected with the main drainage pipe 16;

[0046] Wherein, the main input pipe 12 and the separation pipe 14 ar...

Embodiment 2

[0049] On the basis of embodiment 1, also include:

[0050] The first-stage carbon dioxide transmission pipe 26 and the high-temperature conduction pipe 25 are cut inside the coalbed methane fracturing and extraction joint pipe 15. A first-stage carbon dioxide flow hole 34 is provided at the tangent of the pipe wall of the cracking and drainage pipe 15, and a high-temperature flow hole 32 is provided at the tangent of the high-temperature conduction pipe 25 and the pipe wall of the coalbed methane cracking and drainage pipe 15; Flexible springs 31 are provided on both sides of the flow hole 34 in the axial direction. The other end of the flexible spring 31 is connected with a closed-cell electrode 35. The diameter of the closed-cell electrode 35 is greater than the diameter of the first-stage carbon dioxide flow hole 34; 15 is also provided with a wire tube 27 on the outside of the outer tube wall, and a wire 28 is provided in the wire tube 27; both ends of the first-stage car...

Embodiment 3

[0054] On the basis of embodiment 2, it also includes:

[0055] Between the inlet end of the CBM storage tank 6 and the separation device, between the outlet end of the CBM storage tank 6 and the inlet end of the high temperature furnace 3, between the outlet end of the CBM storage tank 6 and the inlet end of the steam furnace 4. between the inlet end of the carbon dioxide storage tank 5 and the separation device, between the outlet end of the carbon dioxide storage tank 5 and the primary carbon dioxide delivery pipe 26, and between the outlet end of the carbon dioxide storage tank 5 and the secondary carbon dioxide delivery pipe 23 Ground transfer tube 1 is connected.

[0056] The separation device includes a primary separation device and a secondary separation device connected in sequence; the primary separation device is a gas extraction separation bin, and the secondary separation device includes a coalbed methane separation bin 7, a carbon dioxide separation bin 8, an oil...

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Abstract

The invention relates to a coal bed gas and oil gas collaborative exploitation and cyclic utilization device and method. The device comprises a fracturing and sealing mechanism and an earth surface transfer mechanism. Wherein the fracturing sealing mechanism comprises a coal bed gas extraction device and an oil gas extraction device; the coal bed gas extraction device comprises a main input pipe, a separation conveying pipe, a coal bed gas fracturing extraction connection pipe and a main extraction connection pipe which are sequentially connected. The oil and gas extraction device comprises a second-stage input pipe, a second-stage separation conveying pipe, an oil and gas fracturing extraction linkage pipe and a second-stage extraction linkage pipe which are sequentially connected. The second-stage input pipe is connected with the main input pipe, and the second-stage extraction connecting pipe is connected with the main extraction connecting pipe; a primary carbon dioxide conveying pipe, a secondary carbon dioxide conveying pipe, an H2O conveying pipe and a high-temperature conduction pipe are arranged in each of the main input pipe and the separation conveying pipe; a second-stage carbon dioxide conveying pipe and a H2O conveying pipe are arranged in the second-stage input pipe and the second-stage separation conveying pipe; the earth surface transfer mechanism comprises a separation device, a storage device and auxiliary equipment which are sequentially connected. Manpower, material resources and financial resources are saved.

Description

technical field [0001] The invention relates to a kerosene oil and gas cooperative exploitation method, in particular to a coalbed methane + oil and gas cooperative exploitation and recycling method, which belongs to the field of co-associated resource exploitation. Background technique [0002] The Ordos Basin, located in the Shaanxi-Gansu-Ningxia region, contains a large number of geological resources, such as coalbed methane and oil and gas, and the enrichment of coalbed methane and oil and gas ranks among the top in the country. But in most cases, coalbed methane is enriched in the shallow coal seam, and a large amount of oil and gas resources are enriched in the deep part. In traditional research, in the case of co-storage of kerosene, oil and gas are generally extracted first, and then coal seams are exploited to extract coalbed methane. However, a large amount of oil and gas in wells remaining after oil and gas exploitation will bring huge safety hazards to the explo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/26E21B43/30E21B43/40
CPCE21B43/006E21B43/2605E21B43/30E21B43/40
Inventor 罗婷婷江绍静王维波张通赵洋于祥薛生唐明
Owner SHAANXI YANCHANG PETROLEUM GRP
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