Shale gas horizontal well operation device based on pressure oscillation

A kind of operating device and shale gas technology, which is applied in the direction of vibration generating device, wellbore/well components, production fluid, etc., can solve the problems of low shale gas recovery rate, save maintenance costs, and avoid pressure penetration of water layers , high efficiency effect

Inactive Publication Date: 2018-06-12
YANAN UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a shale gas horizontal well operating device based on pressure oscillation, which solves the problem of low shale gas recovery rate caused by the unidirectional extension of fractures in existing shale gas horizontal wells

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  • Shale gas horizontal well operation device based on pressure oscillation

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Embodiment Construction

[0025] In order to enable those skilled in the art to better understand the technical solutions in the application, the following will clearly and completely describe the technical solutions in the embodiments of the application in conjunction with the drawings in the embodiments of the application. Obviously, the described The embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative work should fall within the protection scope of this application.

[0026] Such as figure 1 As shown, a shale gas horizontal well operation device based on pressure oscillation of the present invention includes the fracturing fluid in the liquid tank 1 can be separately provided for fracturing construction, and the sand proppant and multiple sets of liquid tanks can be provided. 1 The fracturing fluid and various additi...

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Abstract

The invention provides a shale gas horizontal well operation device based on pressure oscillation. A pump truck and an instrument truck are connected to a Christmas tree through high-pressure pipelines and connected through a data line; a sand mixing truck and an acid tank truck are connected to the pump truck through high-pressure pipelines; the pump truck is further connected with an oscillationsystem through a high-pressure pipeline; the oscillation system comprises a signal generator, a servo mechanism and a plunger pump and is connected with a pressure sensor through a data line; the pressure sensor is connected to the Christmas tree through a high-pressure pipeline; and the oscillation system further comprises a high-pressure sealing valve connected to the plunger pump. Through theshale gas horizontal well operation device, a target reservoir can generate a plurality of fan-rib-shaped main cracks, and furcal small cracks with the large extending lengths are generated on the main cracks; and the instantaneous extending lengths of the main cracks can be further decreased, and accordingly the situation that a water layer is penetrated in a pressed mode is avoided.

Description

[0001] This application is a divisional application with the filing date of May 6, 2016, the application number being 201610298193.2, and the invention title being "a method for operating a shale gas horizontal well based on pressure oscillation". Technical field [0002] The invention belongs to the technical field of natural gas extraction operation devices and methods, and relates to a shale gas horizontal well operation device based on pressure oscillation. Background technique [0003] Shale gas refers to the natural gas that is mainly stored in shale and shale reservoirs in sandy and silty mudstone formations by adsorption, dissociation or dissolution. It is exactly the same as conventional natural gas in physical and chemical properties. It is natural gas filled in shale fissures with fine pores and layers with a pore size of several nanometers. Because shale gas is usually stored in tight rock formations, it is difficult to extract and costly; therefore, it is usually nece...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B43/26
CPCE21B28/00E21B43/00E21B43/003E21B43/26E21B43/267
Inventor 李忠厚
Owner YANAN UNIV
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