Fast drilling bridge plug made of composite material

Abstract

The invention discloses a fast drilling bridge plug made of a composite material, belonging to the technical field of oil and gas field exploitation. The fast drilling bridge plug comprises a shaft lever made of a epoxy glass fiber composite material, wherein an end shaft is arranged on the outer surface of the bottom end of the shaft lever; a plug is arranged at the axis of the top end of the shaft lever; the plug and the shaft lever are sealed by a sealing ring; a first slip bowl and a second slip bowl are fixed on the shaft lever; the sealing ring is mounted between the first slip bowl and the second slip bowl; transition tiles are arranged among the sealing ring and the first slip bowl as well as between the sealing ring and the second slip bowl; the first slip bowl is connected with one end of a first slip made of a metal material; the other end of the first slip is connected with a thrust ring; the second slip bowl is connected with one end of a second slip made of a metal material; and the other end of the second slip is connected with the end shaft. According to the bridge plug disclosed by the invention, the problems in the prior art that drill beating and jamming of a drilling tool easily occur during bridge plug drilling, the bridge plug chips cannot flow back easily and the construction efficiency is low are solved.

Description

Technical field [0001] The invention belongs to the technical field of oil and gas field exploitation and relates to a composite material speed drill bridge plug. Background technique [0002] At present, after large-scale exploitation of domestic oil and gas fields, oil-rich areas have been scarce or even exhausted, leaving a large number of low-permeability oil areas without large-scale exploitation. The main reason is that the oil production is low and the income is not enough. In recent years, the use of hydraulic fracturing technology for shale gas exploitation and secondary development of low-permeability oil areas has greatly increased the amount of bridge plugs used. Because they are consumables that can only be used once, the amount is huge. At present, the main metal bridge plugs used in China have been used for more than half a century and have made a great contribution to my country's oil production, but there are also many problems. [0003] 1. Card, drill. When the ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a fast-drilling bridge plug made of composite material, which solves the problems in the prior art that when the bridge plug is drilled and broken, it is easy to hit and get stuck, the bridge plug fragments are difficult to flow back, and the construction efficiency is low.

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