Composite speed-increasing screw drilling tool with axial vibration and circumferential vibration functions

Abstract

The invention discloses a composite speed-increasing screw drilling tool with axial vibration and circumferential vibration functions. The composite speed-increasing screw drilling tool includes an upper joint, an anti-drop rod, a motor, a cardan shaft, a transmission shaft, bearings, a disc spring, an upper vibrating block, roll balls, a lower vibrating block, an anti-drop cap, a transmission joint, a lock nut, a circlip, a liquid dispensing sleeve, a drainage tray and a pendulum bob; the anti-drop rod is disposed inside the upper joint, and a rotor of the motor is arranged below the anti-drop rod; the cardan shaft is arranged below the rotor, and the transmission shaft below the cardan shaft is composed of an upper transmission shaft and a lower transmission shaft; the bearings are arranged at the outer side of the upper transmission shaft, and the disc spring, the upper vibrating block, the roll balls, the lower vibrating block, the anti-drop cap, the transmission joint, the lock nut and the circlip are arranged at the outer side of the lower transmission shaft; and the liquid dispensing sleeve, the drainage tray and the pendulum bob are sequentially arranged at the outer side of the transmission joint from top to bottom. According to the composite speed-increasing screw drilling tool with the axial vibration and circumferential vibration functions, not only are the basic torque and speed provided for a drill bit, but also the impact vibration energy is added, so that the rock breaking efficiency and the rate of penetration are improved, the drilling cycle is shortened,and the drilling cost is reduced.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling, in particular to a composite speed-increasing screw drilling tool with axial vibration and circumferential vibration functions Background technique [0002] The screw drilling tool is a common downhole dynamic drilling tool, which provides the required speed and torque for the drill bit to break the rock, but when drilling in soft and hard formations or hard formations, the drilling efficiency will be significantly reduced. Percussion drilling has unique advantages when drilling in hard formations. Axial impact vibration and circumferential impact vibration are two common forms of impact. The combination of impact drilling technology and screw drilling tools can improve the rock breaking efficiency of the drill bit and increase the ROP. . At present, there are axial impact vibration screw drilling tools in the foreign market, but downhole power drilling tools with circumferential im...

AI Technical Summary

Problems solved by technology

At present, there are axial impact vibration screw drilling tools in the foreign market, but downhole power drilling tools with circumferential impact vibration function have not been reported

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