Detonation energization explosion-propagating device for perforating gun string

Abstract

The invention discloses a detonation energization explosion-propagating device for a perforating gun string, which comprises a body, an energizer, two detonating cords, two explosion-propagating tubes and a centralizing ring, wherein the energizer is an ignition explosion-expanding tube consisting of a tube body, an ignition charge and explosion-expanding tube. The energizer is positioned in the middle part of the body and is centralized by the centralizing ring, and two sides of the energizer are successively provided with the explosion-propagating tubes and the detonating cords which are centralized by two centralizing sleeves. When the perforating gun string is formed, two ends of the body are connected with an upper perforating gun and a lower perforating gun respectively, and the other ends of the two detonating cords are connected with perforating bullets in the corresponding perforating guns respectively. The detonation energization explosion-propagating device is assembled between each two sections of the perforating guns and interlayer guns of the perforating gun string for oil-gas wells, solves the problems of reliable perforations and reliable explosion propagations of the interlayer guns of the prior perforating gun string, can well avoid rework accidents such as incomplete perforations, gun blockages and the like caused by insufficient self-energies of explosion-propagating materials and the losses and the attenuation of detonation wave energies in the transmission process, increases the reliability of the perforations, and improves the safety of perforation completion.

Description

technical field [0001] The invention relates to a blasting equipment, in particular to a detonation energy-increasing explosion transmission device suitable for perforation and explosion transmission sequences of oil and gas wells. Background technique [0002] With the continuous development of perforating technology, the well depth is continuously extended, the tubing transmission perforation section and the string of perforating guns are getting longer and longer, and the string of perforating guns is hundreds of meters or even thousands of meters long. Reliability is very important. The perforating gun string is a series connection of multiple perforating guns. The length of the perforating gun string is the same as the length of the perforated well section, and it is the longest transmission sequence among all the transmission sequences. At present, the perforating gun strings used for perforation all adopt the original joint gun (single, double) joints to connect mult...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to overcome the quality problems that are easily produced in the current oil and gas well perforating gun string detonation sequence, and to provide a simple structure, The detonation energy-increasing detonation transmission device that can continuously increase the detonation energy of the perforation detonation transmission sequence

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