Impeller type axial and circumferential compound impactor
An impeller-type, impactor technology, applied in drilling equipment, earth-moving drilling, driving devices for drilling in wellbore, etc., can solve the problems of well wall friction, affecting the drilling speed, damage to the drill bit, etc., and achieve circumferential positive impact High force, high energy conversion efficiency, elimination of stick-slip and sticking effects
Pending Publication Date: 2018-02-06
SOUTHWEST PETROLEUM UNIV
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The invention provides an impeller type axial and circumferential compound impactor, which includes a conversion joint, a motor assembly and an impact assembly. The front end of the motor assembly is connected to the impact assembly, and the rear end is connected to the conversion joint. The impeller of the motor assembly converts the liquid energy into rotational mechanical energy, thereby driving the rotary valve of the impact assembly to rotate. There are holes, so that the drilling fluid periodically enters the hammer head and the hammer body barrel cavity, and the hammer head periodically hits the hammer body barrel under the push of the liquid to produce circumferential shocks, and at the same time, the axial holes of the rotary valve and the valve cover are periodically dislocated. Change the liquid pressure to generate high-frequency axial vibration, and transmit the axial and circumferential impact force to the drill bit through the lower joint to eliminate the stick-slip phenomenon, protect the drill bit, and improve the rock-breaking efficiency of the drill bit. The impeller-type axial and circumferential composite impactor of the present invention uses drilling fluid to generate two impacts, axial and circumferential, and can effectively improve drilling efficiency.
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