Pressure-resistant packer

Abstract

The invention discloses a pressure-resistant packer. The pressure-resistant packer comprises a shell, a sleeve head is welded to the outer wall of one side of the shell, and a first connecting seat iswelded to the outer wall of the other side of the shell. A clamping groove is formed in the outer side of the side, away from the shell, of the first connecting seat. The inner wall of the clamping groove is connected with a setting sleeve in an inserted mode. An elastic sealing sleeve is connected with the outer wall of the end, close to the shell, of the setting sleeve in a sleeving mode. Connecting pipes are connected with the central axis positions of the outer walls of the two sides of the setting sleeve in a sleeving mode. A second clamping groove is formed in the inner wall of each connecting pipe. The inner wall of each second clamping groove is connected with a sleeve in a clamped mode. According to the pressure-resistant packer, through the elastic sealing sleeve and an anchor,the defects that the existing operation that setting and de-sealing of the packer are controlled by using upward-lifting and downward-placing of a pipe column is cumbersome and long in time consumingare effectively avoided; a multi-stage de-sealing pipe is matched with an upward flipping plate, in-advance de-sealing of an existing packer during failure of a hydraulic circuit can be solved; and through an I-shaped slip sleeve, the supporting property is good, and the upper setting sleeve is matched, the setting state of the packer is not affected, and setting is reliable.

Description

technical field [0001] The invention relates to the technical field of packers, in particular to a packer with strong pressure resistance. Background technique [0002] Packers are divided into rotating seat packers and non-rotating seat packers, of which non-rotating seat packers include mechanical packers that are raised and lowered and various types of hydraulic packers. The lifting and lowering mechanical packer uses the lifting and lowering of the pipe string to control the sealing and unsealing of the packer. After searching, the Chinese patent authorization number is CN201710238504.0, which discloses a deep water packer device , including an upper joint, a central tube, a lower joint, slips, rubber pads, sliding sleeves and lock sleeves. The top end of the central tube is threaded with an upper joint; the bottom end of the central tube is threaded with a lower joint. Slips are installed through the upper vertebral body, and the center pipe below the upper vertebral b...

AI Technical Summary

Problems solved by technology

[0002] Packers are divided into rotating seat packers and non-rotating seat packers, of which non-rotating seat packers include mechanical packers that are raised and lowered and various types of hydraulic packers. The lifting and lowering mechanical packer uses the lifting and lowering of the pipe string to control the sealing and unsealing of the packer. After searching, the Chinese patent authorization number is CN201710238504.0, which discloses a deep water packer device , including an upper joint, a central tube, a lower joint, slips, rubber pads, sliding sleeves and lock sleeves. The top end of the central tube is threaded with an upper joint; the bottom end of the central tube is threaded with a lower joint. Slips are installed through the upper vertebral body, and the center pipe below the upper vertebral body is fitted with sliding sleeves and locking sleeves. The existing packers have the disadvantages of cumbersome operation and long time consumption, while hydraulic packers often Due to the disconnection of the hydraulic oil circuit due to harsh environmental factors, the packer is unsealed in advance. Offshore deepwater oil and gas wells have high requirements for formation protection, and early unseal often leads to serious formation pollution.

Images