Bidirectional anchoring downhole instrument hanger

Abstract

The invention belongs to the technical field of oilfield production equipment, and particularly relates to a bidirectional anchoring downhole instrument hanger. The hanger comprises a hanger body, a putting device for putting the hanger body and a salvaging device for salvaging the hanger body, wherein the hanger body comprises a salvaging rod, an upper connecting rod seat, a spring bushing, an upper taper sleeve, a lower taper sleeve, a release sleeve, a lower connecting rod, rolling wheels, a connecting rod, a lower connecting rod seat, a suspension joint, a connecting rod spring, a connecting rod screw, a taper sleeve spring, a shearing nail, an anti-rotating sleeve and a limiting screw; the putting device comprises a putting joint, an adjusting nut, an adjusting rod, a putting outer cylinder, a putting claw, a putting spring, an elastic cylindrical pin and an elastic pin; and the salvaging device comprises an upper joint, an outer cylinder, a protective sleeve, a connecting openingring, a release spring, a salvaging claw spring, a salvaging claw, a shaft, a protective cylinder, a fastening screw and a shearing pin. According to the hanger, a spherical self-locking type mode isadopted, and unlocking is safe and reliable; and an up-down bidirectional anchoring mode is adopted, and liquids in a well flow upwards, so that the hanger is prevented from moving up and down, and the safety and the reliability are achieved.

Description

Technical field: [0001] The invention belongs to the technical field of oilfield production equipment, and in particular relates to a two-way anchoring downhole instrument hanger. Background technique: [0002] Test instrument hangers are widely used in oilfield production, mainly for launching downhole instruments. In the process of oilfield production and development, downhole data of oil, gas and water wells need to be recorded regularly, and the storage data recording method is a relatively common measurement method. The storage data acquisition method is to place the measuring instrument inside the instrument holder, the instrument holder has a pressure transmission hole and is isolated from the production string, and the measuring instrument is not fixedly installed in the instrument holder. During the lifting and lowering process of the instrument support tube with the operation string, the measuring instrument is extremely vulnerable to damage caused by the operatio...

AI Technical Summary

Problems solved by technology

During the lifting and lowering process of the instrument support tube with the operation string, the measuring instrument is extremely vulnerable to damage caused by the operation impact, so the traditional storage data acquisition method can only be used for wells with shallow well depth and small well deviation; there is also a storage data acquisition method It is to fix the test instrument on the guide cone of the pipe string, but this fixing method can only be installed at the bottom end of the working pipe string

At present, the most commonly used is the slip type downhole instrument hanger, which is easy to move up and down when the liquid flows up and down, and the locking method is unreliable, the release lacks safety, and the slip hanger damages the inner wall of the tubing

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