Horizontal well pumping perforating surface-fixed orientation-point clustering perforator detonation transfer conversion device

Abstract

The invention discloses a horizontal well pumping perforating surface-fixed orientation-point clustering perforator detonation transfer conversion device. The device comprises a detonation transfer conversion joint, a fixing cap for fixing a detonation transfer tube, a first conductive sheet and a second conductive sheet for electric conduction, a spring for pressing the second conductive sheet, insulating sleeves, insulating pads, a gun body, a bearing, a positioning ring, perforating bullet clusters, the detonation transfer tube, a detonating cord, a control key, locking pieces, a bearing cap, a bearing sleeve, an upper through wire and a lower through wire. According to the device, in order to achieve detonation transfer between gun strings and transmission of electric signals under anyangle rotation state of gun carriers, wires for transmitting the electric signals and detonating cords installed on the gun carriers in the perforating gun strings rotate along with the gun carriers,an intermediate detonation transfer conversion device is installed between the two gun strings, moving wires respectively fixed on the gun carriers in the two gun strings can be rotated freely in guns along with the gun carriers, the electrical signals can be reliably transmitted, the detonation transfer tube is used for docking, and the detonation transfer can be effectively implemented.

Description

technical field [0001] The invention relates to the technical field of petroleum and natural gas exploitation, in particular to a detonation transfer conversion device for pumped perforation in horizontal wells, fixed plane, fixed orientation, clustered perforator. Background technique [0002] Horizontal well pumping perforation is to achieve effective communication between the wellbore and the formation, using the cable hydraulic transmission method, according to the pumping design procedure, to transport the perforation pipe string and bridge plug to the target layer, and complete the clustered perforation and bridge plug setting A combined device, in the prior art, the existing horizontal well pumped perforation is not suitable for unconventional horizontal oil and gas wells where the wellbore trajectory deviates from the production layer, and the horizontal well wellbore trajectory deviates from the target position. The fracturing problem is difficult to solve, which ma...

AI Technical Summary

Problems solved by technology

[0002] Horizontal well pumping perforation is to achieve effective communication between the wellbore and the formation, using the cable hydraulic transmission method, according to the pumping design procedure, to transport the perforation pipe string and bridge plug to the target layer, and complete the clustered perforation and bridge plug setting A combined device, in the prior art, the existing horizontal well pumped perforation is not suitable for unconventional horizontal oil and gas wells where the wellbore trajectory deviates from the production layer, and the horizontal well wellbore trajectory deviates from the target position. The fracturing problem is difficult to solve, which may cause coal seam collapse, bottom water coning and top sand settling, and the oil recovery efficiency is low

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