Anti-splashing method of tripping lower oil pipe

Abstract

The invention discloses an anti-splashing method of tripping a lower oil pipe. The anti-splashing method comprises the following steps that an oil pipe coupling is connected with the lower oil pipe; an anti-splashing device is installed outside the oil pipe coupling so that the anti-splashing device can wrap the exterior of the oil pipe coupling; a port of the oil pipe coupling is blocked; the anti-splashing device is locked and fixed to the oil pipe coupling; and oil pipe tripping operation is carried out. According to the anti-splashing method of tripping the lower oil pipe, the oil pipe coupling is contained in the anti-splashing device and blocked, meanwhile locking and fixing are carried out, and therefore a traditional mode that a plug cock is screwed into the oil pipe coupling for blocking can be changed into a mode that the oil pipe coupling is wrapped and blocked from the outside, operation is more convenient and faster, and blocking is faster and more efficient.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a splash prevention method for lifting and lowering oil pipes. Background technique [0002] In the oil drilling and production industry, oil pipes often need to be lifted and lowered during minor maintenance operations in the oil field, which is prone to problems such as well kick, blowout, and oil pipe topping. Especially when the oil pipe is broken out, some drilling fluid will be ejected from the top of the oil pipe, which will easily cause safety accidents and environmental problems. [0003] The usual solution today is to quickly screw on a cock in the coupling at the top of the tubing to prevent the fluid from being thrown out. However, this method easily causes the problem that a large amount of drilling fluid inside the oil pipe cannot be returned, and the worker needs to unscrew the cock again and again, which is not only cumbersome to operate, but also has ...

AI Technical Summary

Problems solved by technology

However, this method is easy to cause the problem that a large amount of drilling fluid inside the oil pipe cannot be returned, and the worker needs to unscrew the cock again and again, which is not only cumbersome to operate, but also has low efficiency and low reliability.

At the same time, since there is no handle on the cock, it is very inconvenient to install when the overflow is large, and the screw contact surface between the cock and the oil pipe coupling is small, it is easy to shake when tightening and it is difficult to align and install, which also brings difficulties to the workers during construction. many inconveniences

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