A slip-free sliding sleeve perforating gun

Abstract

The invention discloses a sliding sleeve type perforating gun without chip leakage, which comprises a gun barrel, one end of the gun barrel is buckled to a gun tail joint, the other end is buckled to a double male joint, and sealing rings are arranged at the fastening joints; inside the double male joints there are Detonating cord; there is a sliding sleeve inside the gun barrel, and the inside of the sliding sleeve is sleeved with a perforating charge fixing frame; one end of the perforating charge fixing frame is fixedly connected to the lower connecting plate, and at the same end, the sliding sleeve is fixedly connected to the piston, and the outside of the piston is sleeved with a sliding rod. The sliding sleeve is fixedly connected to the lower connecting plate; at the other end, the perforating charge fixing frame is fixedly connected to the lower connecting plate, and a spring and a ring piece are arranged in sequence between the lower connecting plate and the sliding sleeve, and the spring and the ring piece are sleeved on the perforating charge fixing frame ; There is a fixed bullet hole in the perforating charge fixed frame, and there is a perforating charge in the fixed bullet hole, and the perforating charge is connected with the detonating cord; there is a blind hole in the gun wall on the barrel, and there is a sliding sleeve hole on the sliding sleeve. , The blind hole on the gun wall and the sleeve hole are concentric. The invention can seal the perforating gun perforating bullet fixing frame and the perforating bullet debris inside the sliding sleeve, so as to prevent the debris from entering the wellbore and causing the perforation holes to be blocked.

Description

technical field [0001] The invention belongs to the technical field of petroleum machinery and equipment, and relates to a sliding sleeve type perforating gun without chip leakage. Background technique [0002] During the traditional perforating operation, the perforating bullet holder and the perforating bullets will be broken into thousands of debris or fragments when the perforating gun is perforating, and thousands of debris will pass through the gun wall. The opened perforation holes enter or leak into the wellbore. These debris may block formation perforation holes, fall into the bottom of the wellbore, damage wellbore instruments, circulate to the surface, damage surface equipment, and contaminate crude oil. [0003] At present, the fragmented perforation debris produced by traditional perforating guns during perforation operations easily enters the wellbore, causing formation perforation hole blockage, falling into the bottom of the wellbore, damaging wellbore instr...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a sliding-sleeve perforating gun without leakage, which solves the problem in the prior art that the broken debris enters the wellbore after perforation

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