Composite type energy-containing rod used for generating controllable impact waves and manufacturing method thereof

Abstract

The invention relates to a composite type energy-containing rod used for generating controllable impact waves and a manufacturing method thereof, which solve the problem that current dynamic measureshave the safety problem, and an electric pulse technology has difficulty in generating obvious permeability improvement effect. According to the composite type energy-containing rod used for generating controllable impact waves disclosed by the invention, a housing and an inner tube are hollow straight tubes with two sealed ends, wherein the housing and the inner tube coaxially sleeve; the outer diameter of the housing is 18-23 mm, and length of the housing is 95-105 mm; the outer diameter of the inner tube is 4-8 mm and length of the inner tube is 72-77 mm; a metal wire is arranged along theaxis of the housing and the axis of the inner tube; the two ends of the metal wire extend to the outside of the housing and are fixedly equipped; and the inner tube is filled with a powder shaped energy-containing material, and a liquid energy-containing material is filled between the inner tube and the housing. The manufacturing method for the composite type energy-containing rod used for generating controllable impact waves comprises preparing parts, assembling the metal wire, an inner tube end head and the inner tube, filling the powder shaped energy-containing material into the inner tube,encapsulating the inner tube end head, assembling the inner tube, end covers and the straight tubes, and filling the liquid energy-containing material into the straight tubes, and encapsulating through the end covers.

Description

technical field [0001] The invention belongs to the technical field of shock wave generating equipment, and in particular relates to a composite energetic rod for generating controllable shock waves and a manufacturing method thereof. Background technique [0002] The development of shale gas and tight oil and gas needs to increase the permeability of the reservoir to increase production. At present, dynamic measures such as high-energy gas fracturing, deep space pre-splitting blasting, and carbon dioxide fracturing are usually used for infiltration. Huge size can easily lead to safety problems in wellbore and drilling. In the electric pulse technology, the shock wave generated by the electrohydraulic effect and the electric explosion of the metal wire is another penetration method; but the energy of the shock wave only comes from the electric energy stored in the electric pulse device, so the output shock wave is too small to produce obvious Anti-reflection effect. [000...

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Problems solved by technology

According to the specific requirements of coal seam permeability enhancement, when this type of concentrated energy is applied to shale oil and gas and tight oil and gas, there are still the following defects: the energy concentrated rod made of organic insulating materials cannot meet the requirements of high static pressure; inorganic Insulating materials cannot withstand shock waves; the volume is small, and the energy-containing mixture in it is filled with a small amount, and the shock wave intensity generated is small, making the output shock wave too small to produce obvious anti-reflection effects. Therefore, in the development of shale gas and tight oil and gas due to constraints

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