Device for automatically throwing ball into water hole of drilling tool

Abstract

The invention relates to a device for automatically throwing a ball into a water hole of a drilling tool. The device mainly comprises nine parts such as a body, a piston assembly, a piston blocking plate, a piston locking screw, a piston limiting screw, a spring, a sealing ring, a steel ball and a ball blocking sleeve, wherein the steel ball is accommodated in the body and fixed by the ball blocking sleeve; the ball blocking sleeve is locked by the piston assembly; the piston assembly is mechanically locked by the piston locking screw; the steel ball is limited by the body, the ball blocking sleeve, the piston assembly and the piston locking screw when the ball is not required to be thrown, but the circulation of drilling fluid is not influenced; and the piston locking screw is detached in the process before the ball is thrown, and the steel ball is automatically thrown into the water hole of the drilling tool by pump stop operation. The device for automatically throwing the ball into the water hole of the drilling tool can automatically throw the ball by pump stop operation, is time-saving, labor-saving, safe and reliable, can realize operation continuity, and is particularly suitable for coring construction.

Description

technical field [0001] The invention relates to an automatic ball-throwing device for drilling tool water holes used in oil and natural gas drilling and coring operations or other operations. Background technique [0002] During oil and natural gas exploration, during drilling and coring construction operations or other operations (window opening, liner lowering, etc.), it is necessary to throw steel balls in the water hole of the drilling tool in order to achieve coring for drilling or other operations. , sometimes the drilling tool cannot be lifted, and it is necessary to unload the plug from the standpipe or faucet (top drive) and throw it manually. The operation of manually throwing steel balls is time-consuming and laborious, and there is a risk of drill sticking if the drilling tool does not move for a certain period of time. Contents of the invention [0003] In order to overcome the time-consuming, laborious and risky problems of manual throwing of steel balls, an...

AI Technical Summary

Problems solved by technology

[0003]In order to overcome the time-consuming, laborious and risky problems of manual throwing of steel balls, and the risk of drill sticking, an automatic ball throwing device for drilling rig water holes can automatically Throw steel balls into the water hole of the drilling tool to minimize the throwing time and ensure the continuity of construction

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