Centralizer device for oil and gas field perforation equipment

Abstract

A centralizer device for oil and gas field perforation equipment includes a centralizer main body, springs, pressing plates and slide blocks; the centralizer main body at least includes two springs; the slide blocks are connected to an outer sides of the springs; the pressing plates are arranged on the slide blocks; the springs are symmetrically arranged on the centralizer main body; and the pressing plates are welded onto the slide blocks. The advantages of the invention are that the centralizer device for the oil and gas field perforation equipment can effectively solve the problem that the center of the perforation device and a sleeve are not coaxial during moving while the perforation device performs perforation on a directional well, an inclined well, and a horizontal well in the prior art, is long in action time of effective pressure, can improve the permeability of an oil gas layer surrounding a perforation tunnel, and can improve the production power of an oil and gas well; and the centralizer device is simple and compact in structure, is high in accuracy, and is easy to operate.

Description

technical field [0001] The invention relates to a perforating device in an oil and gas field, in particular to a centralizer device in the perforating device, and in particular provides a centralizer device for perforating equipment in an oil and gas field. Background technique [0002] The main perforation technologies used in the existing Chinese oilfields include negative pressure perforation technology, super positive pressure perforation technology, composite perforation and fracturing technology, through-tubing open perforation technology, hydraulic slot perforation technology, etc. . Perforation is a key process between drilling and oil production. Use low-density perforating fluid or reduce the height of liquid column when perforating with negative pressure perforating technology, so that the bottom hole pressure is properly lower than the formation pressure, which helps to clean the perforation hole and wash away the metal of the perforating bullet attached to the ...

AI Technical Summary

Problems solved by technology

In the traditional perforating process, due to physical gravity, the perforating gun will incline at a certain angle when perforating in highly deviated wells and horizontal wells, and cannot maintain its relatively static movement at the center of the casing, making the perforation When the gun is perforated, the depth and effect of the perforation cannot maintain the consistency of the performance technical requirements, which will affect the post-production effect

Images