Environment-friendly oil drainage tool for oil pipe

Abstract

The invention relates to an environment-friendly oil drainage tool for an oil pipe. The environment-friendly oil drainage tool comprises a central pipe, wherein the upper end of the central pipe is inthreaded connection with an upper joint; the lower end of the central pipe is in threaded connection with a lower joint; a circumferential strip-shaped hole groove and an oil drainage hole I are formed in the upper joint; the upper joint is in threaded connection with a protection ring; the upper joint is sleeved with a sealing sleeve; the sealing sleeve is provided with a toothed rear end; a pinshaft hole and an oil drainage hole II are formed in the sealing sleeve; the middle part of the central pipe is sleeved with a toothed check ring, a centralizing body main body and a friction block;a guide groove is formed in the rear part of a guide sleeve; a guide pin is arranged on the lower joint and is arranged in the guide groove; the lower end of the lower joint is in threaded connectionwith an anti-collision ring. According to the environment-friendly oil drainage tool, crude oil can be effectively prevented from overflowing from the oil pipe to a wellhead to cause environmental pollution during operation through simple operations such as lifting and rotating, so that the wellhead operation condition is improved.

Description

Technical field [0001] The invention relates to an oil field oil extraction operation tool, in particular to an environmental protection oil drain tool for an oil pipe. Background technique [0002] During the secondary construction operation of the oil well by the oil field operation team, the residual oil in the tubing could not be discharged. The oil overflowed when the tubing string was lifted, causing environmental pollution, increasing the cost of crude oil extraction and the difficulty of wellhead operations, and also affecting The construction progress was completed. With the increasing requirements for green and environmentally-friendly construction in major oil fields in China, this problem urgently needs to be effectively solved in terms of economic benefits and long-term social benefits. Summary of the invention [0003] In order to make up for the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an environmentally frie...

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Problems solved by technology

[0002] During the second construction operation of the oil well by the oilfield operation team on site, due to the residual oil in the oil pipe that cannot be discharged, the oil overflows when the pipe string is lifted, causing environmental pollution, which increases the cost of crude oil extraction and the difficulty of wellhead operation, and also affects construction progress

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