Percussion initiator used for oil-gas well perforation

Abstract

The invention relates to a percussion initiator used for oil-gas well perforation. The percussion initiator used for oil-gas well perforation comprises a non-primary explosive percussion primet, a primet base, a non-primary explosive detonator and a body. The percussion initiator used for oil-gas well perforation is used in an oil-gas well oil pipe transmission perforation initiation device, and has the effects of improving the safety of perforation construction work on the aspect of intrinsic safety, and effectively avoiding explosion gun construction accidents caused by inlet liquid of a perforation gun.

Description

technical field [0001] The invention relates to the field of oil and gas well perforation, in particular to an impact detonator suitable for oil and gas well oil pipe transmission perforation. Background technique [0002] Under the safe high-pressure situation, engineering blasting has attracted much attention, and the perforating field of oil and gas wells is no exception, which makes the safety of operators more and more important. For the safety of operators, many methods have been devised in the perforating field of oil and gas wells at home and abroad. For example, a safety gun is added between the detonating device and the perforating gun. The perforating gun is generally about 3 meters long, and its purpose is to keep the detonated perforating gun far away from the operating personnel in case the detonating device accidentally fires, so as to reduce the degree of casualties. However, this does not improve operational safety from the perspective of intrinsic safety o...

AI Technical Summary

Problems solved by technology

Due to the many sealing links of the perforating gun, the labor intensity of the tubing transmission perforation itself, and the high frequency of construction, it is difficult to ensure that the perforation strings for each downhole construction are well sealed

The frequent construction quality accidents show that in most cases, the well fluid enters the perforating gun due to the failure of the seal of a certain link of the perforating gun string, and the perforating gun explodes after detonation (abnormal perforation), resulting in major economic losses

For this reason, the patent "A Percussion Initiator for Oil and Gas Well Perforation" (CN108374651A) invented a detonation transmission device, which provides an effective method for solving the problem of perforating gun explosion caused by liquid ingress

However, since the detonation device contains a primer, it increases the safety hazards of the operators to a certain extent, and at the same time, because the detonation device does not have two-way detonation transmission characteristics, its application range is limited to a certain extent.

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