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Device, method and application for realizing carbon dioxide continuous pulse impact fracturing, and application

A technology of carbon dioxide and pulsation impact, applied in the field of rock mechanics, can solve problems that endanger public health, pollution, water pollution, etc., and achieve the effect of ensuring airtightness

Pending Publication Date: 2020-09-01
江苏中控能源科技有限公司
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  • Abstract
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Problems solved by technology

At the same time, the chemicals used in the gas and hydraulic fracturing process contaminate the aquifers that provide drinking water, causing serious water pollution and even endangering people's public health, causing natural disasters such as earthquakes

Method used

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  • Device, method and application for realizing carbon dioxide continuous pulse impact fracturing, and application
  • Device, method and application for realizing carbon dioxide continuous pulse impact fracturing, and application
  • Device, method and application for realizing carbon dioxide continuous pulse impact fracturing, and application

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Embodiment Construction

[0048] The present invention will be further described below in conjunction with the accompanying drawings.

[0049] Such as figure 1 As shown, a carbon dioxide continuous pulse impact fracturing device includes an automatic opening and closing device 1 , a carbon dioxide deflagration ramming device 2 and an automatic feeding device 3 connected in sequence.

[0050] Such as figure 2 As shown, the automatic opening and closing device 1 includes a middle cylinder 1-2, and one end of the middle cylinder 1-2 is connected with a rear cover 1-1. Preferably, the left end of the middle cylinder 1-2 is connected to the rear cover 1-1. The right end of the middle cylinder 1-2 is screwed, and the right end of the middle cylinder 1-2 is connected with the left end of the carbon dioxide deflagration stamping device 2.

[0051] The back cover 1-1 is provided with a pressure port 1-12, the pressure port 1-12 is preferably a pressure port 1-12 using oil pressure, and the middle cylinder 1-...

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Abstract

The invention discloses a device for realizing carbon dioxide continuous pulse impact fracturing. The device comprises an automatic open-close device (1), a carbon dioxide detonation decompression device (2) and an automatic feeding device (3) which are connected in succession, wherein two independent pressure cabins are disposed inside the automatic open-close device (1), a pressure difference can be used to control switching-on and switching-off of the carbon dioxide detonation decompression device (2) on the right side, and thus pressure relief time can be controlled automatically; and theautomatic feeding device (3) comprises a piston (3-3), two pipelines and the like, and can automatically control addition of raw materials. The invention also discloses a method and application of thedevice for realizing carbon dioxide continuous pulse impact fracturing. The whole device disclosed by the invention has the beneficial effects that operations are conducted automatically, continuousand cyclically by virtue of carbon dioxide pressure balance inside a system and motion of the piston, and manual addition of the raw materials and manual pressure control are not needed.

Description

technical field [0001] The invention belongs to the technical field of rock mechanics, and in particular relates to a device, method and application for realizing carbon dioxide continuous pulse impact fracturing. Background technique [0002] According to a set of latest data from PetroChina, unconventional resources have already accounted for more than half of PetroChina's domestic oil and gas resources. Among the newly added proven reserves in 2017, low-permeability and ultra-low-permeability crude oil reserves accounted for 94%. According to the latest "China Mineral Resources Report (2018)", as of the end of April, the cumulative proven geological reserves of shale gas in my country have exceeded one trillion cubic meters. Hydraulic fracturing, as an important technical means in the process of mining unconventional resources, still has an irreplaceable position in the national economic construction due to its high efficiency, economy and simple operation. [0003] Howe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21C37/14
CPCE21B43/26E21C37/14
Inventor 胡少斌季淮君张强
Owner 江苏中控能源科技有限公司
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