Unlimited-layer electrically controlled fracturing sliding sleeve

Abstract

The invention relates to a fracturing tool, and provides an unlimited-layer electrically controlled fracturing sliding sleeve for conventional and unconventional exploitation processes of oil, natural gas, coal bed gas, shale gas and the like. The fracturing sliding sleeve comprises an outer cylinder sleeve, an inner sliding sleeve and a signal ball, wherein the outer cylinder sleeve is formed by sequentially sleeving an upper joint, a middle joint and a lower joint; a fracturing runner hole is formed in the upper joint; a signal transmitting device for transmitting specific IP addresses is arranged in the signal ball; a sealed chamber is formed between the upper joint and the inner sliding sleeve, hydraulic oil is prefilled in the chamber, and the sealed chamber is provided with a pressure relief hole; an electromagnetic valve for controlling the opening and closing of the pressure relief hole and an electric control device of the electromagnetic valve are arranged on the middle joint; and a valve plate is arranged on the inner side of the upper joint through a torsion spring. The fracturing sliding sleeve is simple in structure and convenient to use, improves the fracturing effect and the operating efficiency, and solves the problem that the fracturing level is limited.

Description

technical field [0001] The invention relates to a fracturing tool, in particular to an unlimited-layer electronically controlled fracturing sliding sleeve used in conventional and unconventional oil, natural gas, coal bed gas, shale gas and other exploitation processes. Background technique [0002] At present, multi-stage fracturing (acidizing, acid fracturing) in oilfields generally adopts the method of mechanical ball throwing for staged fracturing. Therefore, the inner diameter of the sliding sleeve and the fracturing ball are different for each stage. From bottom to top, the diameter of the ball increases step by step. If the inner diameter of the upper tool is exceeded, not only the device is complicated, but the operating efficiency is low, and there is a disadvantage of limited fracturing stages. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art, and provide an unlimited-layer el...

AI Technical Summary

Problems solved by technology

[0002] At present, multi-stage fracturing (acidizing, acid fracturing) in oilfields generally adopts the method of mechanical ball throwing for staged fracturing. Therefore, the inner diameter of the sliding sleeve and the fracturing ball are different for each stage. From bottom to top, the diameter of the ball increases step by step. Exceeding the inner diameter of the upper tool, not only the device is complicated, but the operating efficiency is low, and there is a disadvantage of limited number of fracturing stages

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