By-pass valve capable of memorizing working time for screw drill

Abstract

The invention provides a by-pass valve capable of memorizing working time for a screw drill. In order to overcome the shortages that the scientific management and the reasonable and high-efficiency use of the screw drill cannot be realized due to the fact that the traditional screw drill cannot trace and record the working time caused by the lack of a working time recording device, a time recording device (14) is arranged in the by-pass valve according to the invention; when a by-pass hole (13) of a by-pass valve body (1) is closed, the time recording device (14) records the working time information of the drill screw; a recorder (7) is arranged in a blind hole of a sleeve at the lower end of a valve sleeve (4); a magnetic ring (6) is arranged on a valve core (2); and when the by-pass hole (13) of the by-pass valve body (1) is closed, a detecting probe (5) in the recorder (7) receives a signal of the magnetic ring (6) arranged on the valve core (2). The by-pass valve has the following beneficial effects that the structure is reasonable, the working time of the screw drill can be recorded accurately, and the service condition of the screw drill is traced and recorded conveniently.

Description

technical field [0001] The invention relates to a screw drilling tool of petroleum drilling equipment, in particular to a screw drilling bypass valve capable of memorizing working time. Background technique [0002] The screw drilling tool is a downhole power tool used in oil drilling or workover. It mainly includes a bypass valve assembly, a motor assembly, a cardan shaft assembly and a drive shaft assembly, which are connected sequentially from top to bottom. The function of the bypass valve is to make the circulating drilling fluid flow through the motor, and the bypass channel is opened when tripping in, and the circulating drilling fluid flows into the drill pipe through the bypass valve; when drilling, the bypass channel is closed, and the drilling fluid provides power for the motor; When drilling or connecting a single root, the bypass channel is opened to allow the drilling fluid in the drill pipe to leak out to the annulus between the drill pipe and the well wall; w...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the disadvantages that the existing screw drilling tools do not have a working time recording device, cannot track and record the use time of the screw drilling tools, and are prone to confusion or loss, resulting in the inability to realize the scientific management, rational use and efficient use of the screw drilling tools, The invention provides a screw drilling tool bypass valve capable of memorizing working time

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