Adjustable-charge high-pressure resistance device for breakouting pack of dynamite

Abstract

The invention discloses an adjustable-charge high-pressure resistance device for breakouting pack of dynamite, which comprises a casing body. The casing body is connected with an upper joint and a spring tail. A boosting device is arranged in the upper joint. Unsaturated resin is filled in the casing body, and a certain amount of strip-shaped hollow cavities are distributed on the unsaturated resin and used for loading strip-shaped charges. Priming charges are arranged on the unsaturated resin, and are in tight contact with the strip-shaped charges. A centering sleeve and an elastic press plate are sequentially arranged under the unsaturated resin, wherein the elastic press plate is in contact with the spring tail. Compared with the breakouting pack of dynamite in the traditional artificial detonating cord-winding method, the invention has the advantages of safe and reliable on-site construction, convenient operation, flexible adjustment of charge loading amount, operation at high-pressure environments, and the like, and can be used for the breakouting pack of dynamite when the metal pipe column is blocked in the oil-gas well construction.

Description

technical field [0001] The invention belongs to the application field of explosion technology, and relates to a high-voltage resistant explosive loosening device with adjustable charge amount. The device adopts linear explosive charge technology and is used for explosive loosening of threaded joints of metal pipe column couplings. Background technique [0002] In oil and gas well construction operations, metal pipe strings, such as oil pipes, drill pipes and casings, often get stuck. One of the commonly used methods to solve stuck accidents is explosive loosening, that is, using the method of explosion to work from the coupling of the pipe string to loosen the threaded connection at the coupling, and then rotate the drilling rig to disengage and lift the position of the loosening. The upper pipe string goes out of the wellhead, and then the next step of salvage or other construction measures is carried out. [0003] At present, the existing methods of explosive loosening ma...

AI Technical Summary

Problems solved by technology

The advantages of these explosive loose buckle bombs are that they are easy to operate and safe to use on site, but the disadvantage is that the amount of charge cannot be adjusted and the scope of use is limited.

In actual use, it often occurs that the amount of chemical is too large to damage the metal pipe string, or the amount of chemical is too small to achieve the effect of explosive loosening

According to the information search done by the applicant, there are no related reports and products about the high-pressure explosion-resistant release device with adjustable dose at present.

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