Chemical and physical combined explosion fracturing device and manufacturing method thereof
A chemical physics and fracturing device technology, applied in the field of fracturing, can solve the problems of poor safety, narrow application range, limited fracturing effect, etc., and achieve the effect of ingenious design and reasonable structure
Active Publication Date: 2013-10-16
ZHONGBEI UNIV
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Problems solved by technology
[0003] In order to solve the problems of limited fracturing effect, narrow scope of application and poor safety in use of the existing fr...
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[0020] A chemical-physical composite blasting fracturing device, including a fracturing device shell 1;
[0021] The front opening of the fracturing device shell 1 is sealed with a sealing plug 2; the front part of the inner cavity of the fracturing device shell 1 is interference-fitted with a charge outer cylinder 3; the inner cavity of the charge outer cylinder 3 is provided with a powder screen 4; The rear end of the powder screen 4 extends backwards to the outside of the chamber 3 of the powder chamber, and the outer surface of the rear end of the powder screen 4 is surrounded by a radial extension, the outer surface of the radial extension is in contact with the fracturing device casing 1 is provided with an O-shaped sealing ring between the chamber walls; the rear opening of the gunpowder screen 4 is sealed with a first broken membrane 5; the inner cavity of the gunpowder screen 4 is filled with a gunpowder column 6; There is an ignition wire 7; the front end of the igni...
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The invention relates to the fracturing technology, in particular to a chemical and physical combined explosion fracturing device and a manufacturing method of the chemical and physical combined explosion fracturing device. The chemical and physical combined explosion fracturing device and the manufacturing method of the chemical and physical combined explosion fracturing device resolve the problems at the existing fracturing technology is limited in fracturing effect, narrow in application range and poor in use safety. The chemical and physical combined explosion fracturing device comprises a fracturing device outer shell, wherein the front portion of an inner cavity of the fracturing device outer shell is in interference fit with a powder chamber outer barrel, an inner cavity of the powder chamber outer barrel is provided with a powder screening pipe in a sleeved mode, a first explosion film is arranged on an opening in the rear end of the powder screening pipe in a sealing mode, an inner cavity of the powder screening pipe is filled with a powder pillar which is connected with an ignition line, a pressing nut is arranged on an opening in the rear end of the fracturing device outer shell in a sealing mode, a through hole penetrating through the front portion and the rear portion is formed between the front end surface and the rear end surface of the pressing nut, a second fracturing film is arranged on the through hole in a sealing mode, and the rear portion of the inner cavity of the fracturing device outer shell is filled with high-pressure CO2 in a sealing mode. The chemical and physical combined explosion fracturing device and the manufacturing method of the chemical and physical combined explosion fracturing device are suitable for the development of petroleum, natural gas, coal bed gas, shale gas and the like, and suitable for a pre-fracturing and permeability-increasing process of extraction of coal bed gas under a coal mine shaft.
Description
technical field [0001] The invention relates to fracturing technology, in particular to a chemical-physical composite blasting fracturing device and a manufacturing method thereof. Background technique [0002] Fracturing technology is widely used in underground oil, natural gas, coal bed methane, shale gas and other mining, as well as pre-fracturing and anti-permeation technology for underground coal seam gas drainage in coal mines. At present, most of the domestic oil, natural gas, and coalbed methane that can be exploited are low-permeability, low-abundance, and low-pressure reservoirs. The exploitation of such reservoirs is difficult, and the bottleneck of increasing production lies in fracturing technology. . Under the existing technical conditions, fracturing technology is mainly divided into: explosive fracturing technology, hydraulic fracturing technology, and high-energy gas fracturing technology according to different energy sources. Practice has shown that the e...
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Inventor 马铁华裴东兴崔春生范锦彪李新娥梁志剑祖静靳鸿沈大伟杜红棉尤文斌王燕武耀艳
Owner ZHONGBEI UNIV
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