Bridge plug for easy pumping of bi-directional seat hanger

Abstract

The invention discloses a bridge plug for easy pumping of a bi-directional seat hanger, comprising a coupling 1, an upper center pipe 2, a hydraulic cylinder 3, a sealing ring 4, a sealing ring 5, an upper pushing barrel 6, a rectangular tooth 7, a radial threaded hole 8, a releasing shear pin 9, a limiting ring 10, a limiting bolt 11, a radial threaded hole 12, a soluble ball 13, a setting shear pin 14, a lower center pipe 15, a locking ring 16, a lower pushing barrel 17, an upper rubber seat 18, a rubber barrel 19, a support ring 20, a lower rubber seat 21, a clamping shear pin 22, a conical barrel 23, a slips 24, a stress ring 25, a slips seat 26, a pumping heat 27 and a fastening ring 28. The bridge plug effectively solves the technical problems of the existing bridge plugs that the drift diameter is small, the bi-directional seat hanging is complex in structure, the pumping efficiency is low and the drilling and polishing efficiency is low.

Description

technical field [0001] The invention belongs to the field of staged fracturing and completion operations in the development of oil and gas fields, and in particular relates to a two-way seat-hanging easy-to-pump used in staged fracturing operations in horizontal wells, sidetracking wells, extended-reach wells, branch wells and vertical wells. bridge plug. Background technique [0002] At present, the diameter of the bridge plugs used in staged fracturing completion operations is small, which limits the ability of liquid to pass through the bridge plugs. After the fracturing operation, the bridge plugs must be drilled first to obtain sufficient fluid production. As a result, it cannot be put into production immediately after the fracturing operation, and the currently used bridge plug needs double rows of upper and lower slips to achieve two-way seat hanging, and the structure of the bridge plug is complicated. When pumping bridge plugs in highly deviated well sections and h...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the technical problems of the existing bridge plug with small diameter, complicated two-way mounting structure, low pumping efficiency and low drilling and grinding efficiency, the present invention provides a bridge plug for horizontal wells, sidetracking wells, extended reach wells, and vertical well staged fracturing operations (large diameter) two-way mounted easy pumping bridge plugs

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