Jet type torsional impact drilling tool

Abstract

The invention relates to a jet type torsional impact drilling tool. The jet type torsional impact drilling tool comprises an upper connector, an outer shell, a float valve, a valve seat spreader plate, a jet element, a jet spreader plate, a punch hammer, an impact transmission cylinder and a spring. The upper connector is fixedly connected with the outer shell, the outer shell is fixedly connected with the impact transmission cylinder, the float valve, the valve seat spreader plate, the jet element, the jet spreader plate and the spring are located in the outer shell, and the punch hammer is arranged in the transmission cylinder. According to the jet type torsional impact drilling tool, the attachment jet element generates alternating jet to drive the punch hammer to swing left and right, and the punch hammer collides with and impacts on the transmission cylinder to make underground torque greatly fluctuate; compared with a conventional drilling mode, the mean value of the torque of an underground drill bit is increased, the torque of the underground drilling tool is made to greatly fluctuate at high frequency in the drilling process, the stick slip phenomenon of the drill bit is alleviated, the probability of bit bouncing is reduced, and drilling efficiency is improved. The drilling tool is fewer in movable parts and quick-wear parts, long in normal work life, and high in safe reliability.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to a torsional percussion drilling mechanism which generates left and right alternate jets through a jet element, pushes a hammer to swing left and right and collides with a transmission cylinder, and in particular relates to a jet-type torsional percussion drilling tool. Background technique [0002] As the country's demand for oil and gas continues to increase, the depth of oil and gas drilling has been continuously extended. There are more and more hard formations and complex formations encountered in the drilling process. The bottom hole torque of conventional drilling methods can no longer meet the requirements of efficient drilling. A new drilling method and tool is urgently needed to improve the bottom hole torque and drilling speed. Practice shows that the torsional percussion drilling technology can effectively increase the fluctuation of the bottom hole tor...

AI Technical Summary

Problems solved by technology

[0004] At present, the torsional percussion drilling tools available in China mainly have two structures and principles: the torsional percussion drilling tool of Southwest Petroleum University (patent number: 200910058083.9) uses a screw to provide power, and the ratchet structure is complex and easy to wear, which affects the actual working life of the downhole; Shengli Drilling The torsional punching tool (patent application number: 201010511421.2) of the Institute mainly uses the conversion of the high and low pressure areas of the drilling fluid to drive the hammer to swing left and right to generate torsional impact. The structure is relatively complicated and cumbersome, and many moving parts affect the life and reliability of the tool.

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