Detonation energization explosion-propagating device for perforating gun string

Abstract

The invention discloses a detonation energization and transmission device for perforating gun strings, which comprises a body, an energizer, two detonating cords, two detonation tubes and a centralizing ring. The energizer is composed of a tube body, a point The ignition expansion tube formed by gunpowder and the expansion tube. The energizer is located in the middle of the main body and is centered by the centering ring, and the detonator and the detonating cord are on both sides in turn, and are centered by two centering sleeves. When forming a string of perforating guns, the two ends of the body are respectively connected to the upper and lower perforating guns, and the other ends of the two detonating cords are respectively connected to the perforating charges in the corresponding perforating guns. The invention is assembled between every two sections of perforating guns and interlayer guns in the perforating gun string used for oil and gas wells, which solves the problems of reliable perforation of the existing perforating gun string and reliable explosion transmission of the interlayer gun; Insufficient energy of the detonation equipment itself and the loss and attenuation of the detonation wave energy in the transmission process caused incomplete perforation and rework accidents such as gun jamming, which increased the reliability of perforation and improved the performance of perforation completion. security.

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...

Images