A New Manual Slip Device Used in Drilling and Workover

Abstract

A manual slip used for drilling and workover to place the clamped or suspended target in the inner hollow area. Pin composition. The main slip structure is formed by the alternating connection of the slip body segment structure with a thin layer of silica gel and the accordion pleat silicone segments with built-in spring warp and weft steel wires, and the built-in alloy carbon steel hollow arc belt segment and built-in spring warp and weft steel wires. The belt loop formed by the alternating connection of the hollow silicone sections of the accordion pleats makes full use of the friction of the silicone, the firmness of the steel wire frame and the flexibility of the two. By tightening the belt, the inner wall of the main slip structure of the cylinder is closely attached and adsorbed by negative pressure. The clamping or suspension of the target is realized on the outer surface of the target, which enhances the cushioning of the slips to the target, the adaptability to the shape of the special-shaped part, and the fit to the size of the target, while effectively avoiding A series of problems caused by the design of slips in traditional slips.

Description

technical field [0001] The invention relates to a new type of manual slip device for drilling and workover, which is characterized in that it is an adjustable clamp that can be directly installed on drilling tools, casings and oil pipes without joint assembly of the slip body before use. It belongs to the technical field of oil and gas engineering equipment. Background technique [0002] Slips are wellhead tools that clamp the body of drill pipes, drill collars, casings, and tubing and suspend the weight of the string in oil and gas drilling and workover operations. According to the operation mode, slips can be divided into two types: manual slips that use manpower to complete the clamping or loosening of the target object, and power slips that use gas or liquid pressure to complete the operation. Compared with power slips, manual slips are widely used in oil and gas drilling and workover operations because of their relatively simple structure and relatively convenient oper...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems that slips cannot be placed at the variable diameter or special-shaped parts of the target object, the size of the slips after multi-piece assembly cannot match the size of the target object well, and many problems caused by the slip teeth during the use of slips, the present invention provides A new type of manual slip device for drilling and workover, to adapt to the clamping or suspension of the special-shaped part of the target, the fine adjustment of the size of the slips and the target, and the cushioning of the contact with the target, and the present invention The special structural design without slips in the middle can not only realize the function of replacing slips, but also avoid a series of problems caused by the design of slips in engineering use

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