Anchoring sealing insertion pipe with depth correction and trial insertion functions

Abstract

The invention discloses an anchoring sealing insertion pipe with depth correction and trial insertion functions. The insertion pipe comprises an upper joint, a spring sleeve, a spring, a cylindrical pin, an elastic pawl, a baffle ring, a center body, an extension pipe and a guide head; the upper joint is in threaded connection with one end of the center body; one end of the spring sleeve is in threaded connection with the outside of the upper joint; the baffle ring is arranged at the other end of the spring sleeve; one end of the baffle ring is clamped in a milling groove of the upper joint; a cylindrical pin is arranged between the baffle ring and the upper joint; a spring in a compressed state is arranged in a space defined by the spring sleeve, the upper joint and the baffle ring; the elastic pawl is arranged between the center body and the baffle ring; the end part of the center body is in threaded connection with the extension pipe; sealing sets are arranged on the outer circle of the center body and the outer circle of the extension pipe; and the end part of the extension pipe is in threaded connection with one end of the guide head. The problems that the depth needs to be corrected independently and the depth correction is not accurate before the anchoring sealing insertion pipe is inserted into a hanger in an open hole well completion pipe column are solved, so that the depth of the well completion pipe column is corrected conveniently and rapidly.

Description

technical field [0001] The invention belongs to the field of well completion equipment for oil and gas fields, and in particular relates to an anchoring and sealing intubation tube with functions of depth correction and test insertion. Background technique [0002] With the development of science and technology, in the field of oil and gas field completion, in order to save the cost of cementing, the proportion of open-hole completion in the completion plan is also increasing year by year, and with the country’s increasing investment in gas production, western Sichuan gradually appears Sour gas fields such as Yuanba gas field and marine gas field have been established. In the traditional open-hole well completion scheme, the wellbore structure is that the casing section is a vertical wellbore, and the open-hole section is a horizontal or highly deviated wellbore. Considering various factors, there are many open hole casing sections with high inclination. This leads to the ...

AI Technical Summary

Problems solved by technology

The process of depth calibration requires another special equipment, and it is a highly deviated well. After the depth calibration, the elongation of the pipe string needs to be calculated before the pipe string is run, so the error is relatively large.

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