Carbon dioxide stamping phase change detonation fracturing system and method

A carbon dioxide and deflagration technology, which is applied in the direction of earthwork drilling, mining fluid, wellbore/well parts, etc., can solve the problems of groundwater pollution, achieve the effect of reducing carbon dioxide consumption and convenient operation

Inactive Publication Date: 2017-02-08
胡少斌
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  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, the fracturing method currently being developed mainly requires millions of tons of water for each hydraulic fracture, and chemicals are often added to the water, which may pollute the groundwater

Method used

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  • Carbon dioxide stamping phase change detonation fracturing system and method

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Embodiment Construction

[0056] Below in conjunction with accompanying drawing and embodiment describe in detail:

[0057] 1. System

[0058] 1. Overall

[0059] Such as figure 1 , this system includes working objects: from top to bottom, in the geological environment composed of cap rock A, reservoir rock B and bottom rock C, there is an L-shaped drilling D, and reservoir rock B is the target object of fracturing;

[0060] It is equipped with a carbon dioxide tank 1, an energy-gathering agent tank 2, a proppant tank 3, a booster pump 4, an injection pipeline 5, a mixture generator 6, a packer 7, an electric spark ignition device 8, a directional casing 9 and perforation 10;

[0061] Its location and connection relationship are:

[0062] A carbon dioxide tank 1, an energy-gathering agent tank 2, a proppant tank 3 and a booster pump 4 are arranged on the ground;

[0063] A support casing D-1 is arranged on the vertical section of the drilling D, and a directional casing 9 is arranged on the horizo...

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Abstract

The invention discloses a carbon dioxide stamping phase change detonation fracturing system and a method thereof, and relates to the field of development and utilization of unconventional oil and gas resources in underground deep-buried reservoirs. The system is characterized in that a supporting and protecting casing pipe (D-1) is arranged at a vertical section of a drilled well (D); a directed casing pipe (9) is arranged at a horizontal section of the drilled well (D); a mixture generator (6), a packer (7), an electric spark ignition device (8) and a jet hole (10) are arranged in the directed casing pipe (9) from left to right in sequence; an energy concentrator tank body (2) and a supporting agent tank body (3) are respectively connected with a boosting pump (4) through pipelines; and a carbon dioxide tank body (1) and the boosting pump (4) are respectively connected with the mixture generator (6) through injection pipelines (5). The carbon dioxide stamping phase change detonation fracturing system can fully use high-energy impact waves generated by detonation of carbon dioxide and an energy concentrator to enable rocks in the reservoirs to generate fractures, and the high-energy impact waves can be adjusted according to a fracturing demand; and reaction raw materials adopted by the system are pollution-free to the environment.

Description

technical field [0001] The invention relates to the field of development and utilization of unconventional oil and gas resources in deep underground reservoirs, in particular to a carbon dioxide ramming phase change deflagration fracturing system and a method thereof. Background technique [0002] Unconventional oil and gas resources are rich in reserves, but the geological conditions of unconventional oil and gas resources are complex, and the rock permeability is low, which is not conducive to the development of unconventional oil and gas resources. Fracturing is an important means to develop unconventional oil and gas resources in tight reservoirs. After nearly half a century of development of hydraulic fracturing technology, especially since the end of the 1980s, the rapid development of pressure design, fracturing fluid and additives, proppant, etc. has made hydraulic fracturing and multi-stage fracturing and repeated fracturing Breakthroughs have been made in cracks an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B43/263E21B43/267
CPCE21B43/26E21B43/255E21B43/263E21B43/267
Inventor 胡少斌
Owner 胡少斌
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