A kind of hydraulic shaping pipe string and casing shaping process

Abstract

The invention relates to the technical field of shaping and repairing damaged casings, in particular to a hydraulic shaping pipe string and a casing shaping process. The hydraulic shaping string includes oil pipe, shaper, and hydraulic booster. The hydraulic booster includes a two-way booster and a hydraulic commutator; the two-way booster includes a piston cylinder and a piston. The piston and the piston cylinder cooperate to form a shaping chamber and lift Chamber; the hydraulic commutator includes a commutator main body, and a pressure transmission tube is installed in the central hole of the commutator main body for sliding sealing and upward to prevent detachment. The pressure transmission tube has a liquid inlet channel; the main body of the commutator is equipped with a channel and lifting channel, the pressure transmission tube has an upper limit position and a lower limit position on the stroke of reciprocating movement with the oil pipe. connected; when the upper limit position is reached, the inlet of the shaping channel is connected with the pressure relief channel, and the inlet of the lifting channel is connected with the outlet of the liquid inlet channel.

Description

Technical field [0001] The present invention relates to the field of impaired sleeve shaping repair, and more particularly to a hydraulic shaping tube and a sleeve shaping process. Background technique [0002] With the growth of oil field development, plus the cause of well body structure, solid well quality, corrosion, etc., so that the well-of-the-wellness of the oil and water is increasing, the number of sleeves is also growing, resulting in a large number of oil water wells lying well, craft measures Unable to implement, contradiction between the layers, decline in production. [0003] To this end, the authorized bulletin is disclosed for the Chinese invention patent of CN101942979B discloses an anchored ball sleeve shaping device and a sleeve shaping method including a conjunction with the upper and discharge, and the total discharge is always Curable, anchoring assembly, tank assembly, and lower joint, as well as a ball integrator connected to the lower junction, when used...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hydraulic shaping pipe string to solve the technical problem in the prior art that the pipe string is easily stuck and unable to be lifted up; it also provides a casing shaping process to solve the problem that the pipe string cannot be lifted up due to being stuck. technical issues

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