A mechanical re-setting bridge plug

Abstract

A mechanical type can be repeatedly set temporarily plugged bridge plug, which relates to the technical field of downhole tools in oilfield, including an upper anchor assembly, a rubber barrel sealing upper and lower cone assembly, a lower friction anchor assembly, a center assembly, a repeated sliding locking assembly, a salvage seat Sealing assembly, the upper anchoring assembly is composed of an insertion tube, a sleeve and an upper slip, the upper and lower cone assemblies of the rubber tube seal are sleeved on the outside of the outer center tube, and the locking assembly is repeatedly slid to have a guide slide J-shaped body cover and bridge plug The lower joint is composed of the cylindrical protrusion on the lower joint of the bridge plug and the J-shaped body cover guide slide to form a repeated sliding locking device. After setting, the elastic force of the rubber cylinder is locked by the guide slide of the J-row body cover and the reverse force of the upper spring; therefore, the present invention can withstand the high pressure at the bottom of the well, and the setting is more reliable. At the same time, the bridge plug can be repeatedly set in the well, and the position of the bridge plug can be adjusted repeatedly by salvaging, saving time and production costs.

Description

technical field [0001] The invention belongs to the field of downhole tools in oilfields, and in particular relates to a mechanical repeatable setting bridge plug. Background technique [0002] In various downhole work in various fields of the oil field, after the conventional bridge plug is put into the pipe string to function, the operation team needs to take out the bridge plug and then continue to complete the operation. The operation at this stage wastes a lot of manpower, material resources and time costs. The emergence of the invention solves the existing problem and can complete the progress of the conventional operation by repeatedly setting bridge plugs after running the pipe string once, and does not need to run the pipe string again. SUMMARY OF THE INVENTION [0003] In order to solve the problem that the existing conventional bridge plug needs to be pulled out of the pipe string twice or more times after the operation after going down the well, the present inv...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing conventional bridge plug needs to be pulled out for two or more times after the downhole operation, the present invention provides a bridge plug that can be repeatedly set, unsealed, discarded, and salvaged in the well, which can be applied to oil field fracturing and put into production. , anti-backflow, temporary plugging, blowout prevention and other oilfield operation projects

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