Setting tool capable of hydraulically and mechanically releasing

Abstract

The invention relates to a setting tool capable of hydraulically and mechanically releasing, which belongs to the field of underground operation tools of oil-gas wells. The setting tool comprises a mandrel, a setting short section, an upper joint and a ball seat short section joint, wherein one end of the upper joint is equipped with the setting short section; a protective sleeve is mounted in theupper joint in a threaded mode; the mandrel is mounted in the setting short section at one side of an end head of the protective sleeve in the threaded mode; a lock block is mounted between the mandrel and the setting short section; and a piston is equipped on a position, on the mandrel of the end part of the setting short section, at one side of the lock block. The setting tool can be used repeatedly by many times; a piston outer barrel is fixed with a step of the setting short section through a separating ring; and during maintaining, a fastening bolt fixed between outer barrel pressure caps is dismounted, so that operation is realized. Compared with a conventional piston outer barrel which is connected and fixed through threads, the setting tool can prevent the problem that parts cannot be used as wear is caused on connecting threads by repeated dismounting during maintaining, is simple in operation, and improves reliability.

Description

Technical field [0001] The invention relates to a setting tool that can be released hydraulically and mechanically, and belongs to the field of downhole operation tools for oil and gas wells. Background technique [0002] In the downhole operation of oil and gas wells; as one of the important parts of the gravel packing sand control string, the top packer plays the role of suspending wellbore tools and packing oil and gas layers in the gravel packing sand control operation; the top packer is in the process of running It can’t be set in advance, and it can be solved by lifting, lowering, and rotating in case of obstruction or jam; after the top packer is set, the setting tool must be able to be released smoothly to provide fluid channels for subsequent gravel filling operations; The setting tool can be reused and is convenient for assembly, repair and maintenance. However, the current setting tools matched with the top packer have the following shortcomings: 1. It can only be rel...

AI Technical Summary

Problems solved by technology

However, the current setting tools matched with the top packer have the following deficiencies: 1. They can only be released mechanically or hydraulically, with a single method and poor reliability; 2. Torque cannot be effectively transmitted when the pipe string is running; 3. There is no protection against The top packer is set in advance, and it is easy to set in advance when it is stuck; 4. The structure is unreasonable, and the repair and maintenance are difficult and costly

These factors greatly affect the construction efficiency and reliability, poor adaptability

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