Rolling type constant flow fluidic efflux hammer

Abstract

The invention relates to a rolling type constant flow fluidic efflux hammer, and belongs to the field of petroleum and gas drilling techniques. According to the technical scheme, a flow divider assembly is installed in an upper connector, a first middle connector is connected with the lower end of the upper connector, an internal cylinder body is connected with the lower end of a bistable fluidic element, the internal cylinder body is connected with a cylinder cover, and the bistable fluidic element, the internal cylinder body and the cylinder cover are limited in the first middle connector; an energy storage leaf spring is arranged inside the internal cylinder body and limited through a limit groove and a limit boss, and a punch hammer is connected with an integral type piston and installed inside the internal cylinder body; four roll ball assemblies are arranged uniformly along the circumference of the punch hammer, a third middle connector is connected with the lower end of the second middle connector, and a hammering block is arranged in the third middle connector in a sleeved mode; splines are arranged on the hammering block, a roll ball assembly is arranged on the parts of the splines, and a lower connector is connected with the lower end of the hammering block. The rolling type constant flow fluidic efflux hammer can increase impacting energy of an impacter, reduce erosion destruction of the bistable fluidic element, improve stability and reliability of the impacter and prolong the service life of the impacter.

Description

technical field [0001] The invention relates to an oil drilling tool, in particular to a rolling constant flow jet impactor used for oil and gas drilling operations. Background technique [0002] In the drilling engineering of the petroleum industry, percussion drilling is one of the important methods to increase the drilling speed of brittle formations. The purpose of rock breaking is achieved through the joint action of the drill string torque and the impact load of the impactor. Hydraulic impactor is an important tool for percussion drilling, mainly divided into two types: valve type and hydraulic jet type. The valve type impactor realizes hammer impact and return mainly through the opening and closing of the valve, spring and throttling pressure. The jet type impactor realizes the drilling fluid alternately entering the upper and lower chambers of the piston through the switching of the wall attachment of the jet element, thereby realizing the stroke and return. The jet...

AI Technical Summary

Problems solved by technology

This invention needs to replace nozzles of different sizes under a specific displacement, and the seal between the alloy nozzle and the shunt gland is easily damaged, which affects the performance of the impactor

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