Feeding-controlling full-bore sliding sleeve sectional fracturing tube column

Abstract

The invention discloses a feeding-controlling full-bore sliding sleeve sectional fracturing tube column, and aims to solve the problems in the prior art that great danger can be caused, the process is complex, the operation cost is high and the like if an explosive powder column is taken as power. The feeding-controlling full-bore sliding sleeve sectional fracturing tube column (see the figure 4) comprises two parts, namely, an underground part and a fracturing control part, wherein the underground part consists of a casing pipe 42, a timing sliding sleeve 48 and a plurality of feeding-controlling sliding sleeves; the number 49 refers to a fractured interval; the fracturing control part consists of a cable 41, a cable head 43, a positioning instrument 44, a cable hydraulic feeding tool 45 and high-strength hydrolysis bridge plugs 47.

Description

technical field [0001] The invention relates to the technical field of oil field exploration and development engineering, in particular to a downhole cable plug feeding tool, a plug control full-diameter sliding sleeve and a segmented fracturing pipe string. Background technique [0002] 1. Current status of bridge plug feeding process: [0003] In the exploration and development of oil and gas fields, the application of bridge plugs for oil testing in layers, fracturing in layers, oil and gas recovery in layers or water shutoff has become the most widely used technology. When the bridge plugging process is used for plugging in production applications, a set of supporting feeding technology must be used to deliver the bridge plug to the predetermined position and set it, so as to cut off the flow channel of the production well and achieve the purpose of plugging. The currently used plug feeding methods mainly include mechanical hydraulic feeding and cable feeding. When the ...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems existing in the background technology, the present invention discloses a plug-controlled full-bore sliding sleeve segmented fracturing string, which solves the problem of high risk and complicated process in the prior art that uses explosives and gunpowder columns as power. , high operating costs and other issues; the plug-controlled full-bore sliding sleeve staged fracturing string (attached Figure 4 ) includes two parts downhole and fracturing control, the downhole part is composed of casing 42, timing sliding sleeve 48 and plug control sliding sleeve 46 (multiple), wherein 49 represents the fracturing interval, and the fracturing control part consists of cables 41, Composed of cable head 43, positioning instrument 44, cable hydraulic plugging tool 45 and high-strength hydrolysis bridge plug 47;

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