Fracture prevention transmission shaft assembly for petroleum mine drilling tool

Abstract

The invention provides a fracture prevention transmission shaft assembly for a petroleum mine drilling tool. The fracture prevention transmission shaft assembly comprises a transmission shaft; the endof the transmission shaft is connected with a water passing connector; the outer surface of the transmission shaft is sleeved with a transmission shaft housing; an upper section part subassembly, a middle section part subassembly, a shock pad, a spacer bush subassembly and a lower section part subassembly are sequentially arranged on the transmission shaft; the upper section part subassembly is sequentially provided with an upper radial bearing inner ring and an upper radial bearing outer ring from the inside out; the lower section part subassembly is sequentially provided with a lower radialbearing inner ring and a lower radial bearing outer ring from the inside out; the middle section part subassembly is sequentially provided with a string bearing inner ring, steel balls and a string bearing outer ring from the inside out; the spacer bush subassembly is sequentially provided with a first spacer bush, an outer sleeve, a clamp sleeve and a second spacer bush from the top down; and the outer sleeve sleeves the excircle of the clamp sleeve. The fracture prevention transmission shaft assembly has the beneficial effects that the fracture prevention transmission shaft assembly is reasonable in design and stable in structure, the situation that the petroleum mine drilling tool is fractured and then falls into a well during operation can be avoided, the safety coefficient is increased and the service life is prolonged.

Description

technical field [0001] The invention relates to an anti-fracture drive shaft assembly for drilling tools in petroleum mines. Background technique [0002] In oil and mine drilling operations, the transmission shaft is used to drive the drilling tool to carry out operations. At present, when the transmission shaft assembly and the drilling tool are used in combination, the drilling tool often comes out and is lowered to the bottom of the well or the drilling tool breaks down the well during use. The water phenomenon will cause damage to the drilling tool and the transmission shaft, which will increase the safety hazard and affect the work efficiency and increase the maintenance cost of the enterprise. Contents of the invention [0003] The invention provides an anti-fracture drive shaft assembly for drilling tools in petroleum mines. The design is reasonable and the structure is stable, which can prevent wells from falling due to fracture during operation, improve the saf...

AI Technical Summary

Problems solved by technology

[0002] In the oil well drilling operation, the transmission shaft is used to drive the drilling tool for operation. At present, when the transmission shaft assembly and the drilling tool are used in combination, the drilling tool often comes out and is lowered to the bottom of the well or the drilling tool breaks down during the use of the well. The water phenomenon will cause damage to the drilling tool and the drive shaft, which will increase the safety hazard and affect the work efficiency and increase the maintenance cost of the enterprise.

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