Hydraulically controlled safety support anchoring device and method of use thereof

Abstract

The invention discloses a hydraulically-controlled safe-supporting anchoring device and a use method thereof. The hydraulically-controlled safe-supporting anchoring device comprises a central pipe, ananchoring device, a slip, a slip bracket, a piston cylinder, a safe descending mechanism and a safe ascending mechanism, wherein a locking block groove and a pressure transfer hole are formed in thecentral pipe; the anchoring device is arranged at the outer side of the central pipe, and comprises a cone body which is fixedly connected with the central pipe, and the outer side surface of the conebody is an inclined surface; the inner side surface of the slip is a conical surface, and forms slide fit with the outer side surface of the cone body; the slip bracket is arranged at the lower sideof the slip, and connected with the slip; the bottom of the piston cylinder is fixedly connected with the central pipe, and an annular space which communicates with the pressure transfer hole is formed between the piston cylinder and the central pipe; the safe descending mechanism and the safe ascending mechanism are arranged in the annular space which is formed by the piston cylinder and the central pipe, and the safe descending mechanism fixedly connects the slip bracket with the central pipe; and the safe ascending mechanism comprises an elastic element and a piston, and the elastic elementis used for return of the piston. According to the hydraulically-controlled safe-supporting anchoring device and the use method thereof, safe descending and safe ascending for the anchoring device can be realized.

Description

technical field [0001] The invention belongs to the field of oil well devices, and in particular relates to a hydraulically controlled safety support and anchoring device and a method for using the same. Background technique [0002] In oilfield operations, such as well completion, well workover and stimulation operations, it is often necessary to use anchoring devices to anchor and position the pipe string. However, the following problems exist in the use of conventional slip anchoring devices: [0003] When the anchoring device is going downhole, due to the deformation of the casing and other reasons, the slips of the anchoring device are stuck, causing the anchoring device to be anchored in advance before it is lowered to a fixed position, and the anchoring effect cannot be achieved. Increase the difficulty of construction. [0004] Another problem is that after the anchoring device is anchored, due to fouling and blockage in the later device, the hydraulic device is alw...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a hydraulically controlled safety support anchoring device and its use method to solve the problem of early anchoring during the downhole process of the current anchoring device and the scaling and blockage in the device after anchoring. Difficult to unclamp and other technical problems, in order to achieve the technical effect of safe downhole and safe release of the anchoring device

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