Method for improving screw drilling tool use performance and super screw drilling tool

Abstract

The invention discloses a method for improving screw drilling tool use performance and a super screw drilling tool. The super screw drilling tool comprises a fall prevention conversion assembly, a motor assembly, a universal shaft assembly and a transmission shaft assembly, the fall prevention conversion assembly comprises a fall prevention conversion connector, a fall prevention disk and a fall prevention connecting rod, the fall prevention disk is arranged in the fall prevention conversion connector, the upper end of the fall prevention connecting rod is arranged in the fall prevention diskin a sleeving manner and fixed through a tightening nut, and the other end of the fall prevention connecting rod is connected with the upper end of a rotor of the motor assembly. The super screw drilling tool is simple in structure, safe and reliable, rotating and drilling functions of a conventional screw drilling tool and a directional drilling function of a bent shell can be achieved, the superscrew drilling tool is particularly applicable to well drilling occasions of supra-maximal discharge capacity, torque and drilling pressure and ultra-high compound rotating speed under high bending deflection (namely a short-radius drilling tool), the super screw drilling tool has service life equivalent to a conventional screw, the application range of the screw drilling tool is greatly widened,and well drilling speed can be effectively improved.

Description

technical field [0001] The invention relates to a method for improving the performance of a screw drilling tool and a super screw drilling tool, belonging to the technical field of drilling. Background technique [0002] At present, in drilling construction operations at home and abroad, the use of screw drilling tools in vertical wells, directional wells and horizontal wells as an economical, durable power drilling tool has been quite common. However, as the level of drilling technology, technological equipment, and drill bits are getting higher and higher, and in order to meet environmental protection requirements, increase production, old well reconstruction, ultra-deep wells, ocean drilling and exploration wells in new blocks, the complexity of formations is becoming more and more complex. There are more and more high-altitude, super-hard formations, and more and more complex formations, especially the higher and higher requirements for the drilling speed increase index....

AI Technical Summary

Problems solved by technology

[0003] At present, during the deep well operation of traditional screw drilling tools, while ensuring the drilling speed, the screw drilling tools will be subjected to relatively large axial pressure when encountering sudden drilling operations or continuous high drilling pressure and high torque drilling. and vibration damage, greatly reducing the service life of screw drilling tools and drill bits

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