Clamp for scraping and impacting composite rock breaking test

Abstract

The invention discloses a clamp for a scraping and impacting composite rock breaking test. The clamp is mainly composed of a clamp body, a bearing, hexagon socket screws, PDC teeth and a hobbing clamp. The PDC teeth and the hard alloy teeth are combined, and the angle cushion block and the adjusting nut are adopted, so that multi-parameter change adjustment is realized, various test parameter requirements are met, and the purpose of reutilization of the clamp is achieved. Meanwhile, the PDC teeth and the hard alloy teeth are fastened through the bolts and clamped through the clamping sleeves respectively, the teeth are convenient and fast to replace, and the problems that the test cost is high and the test preparation time is long are solved. And in addition, the hard alloy teeth are rotatably and uniformly mounted on the circumferential surface of the hobbing fixture matrix, and the rotation of the hobbing fixture matrix drives the hard alloy teeth to rotatably impact the rock, so that the purposes of short time and high frequency when the hard alloy teeth act on the rock once are achieved, and the test efficiency is improved.

Description

technical field [0001] The invention belongs to a fixture for a composite rock-breaking test, in particular to a fixture device for a combined scraping and impact rock-breaking test. Background technique [0002] my country is a country with a large demand for energy, but oil and gas resources rely heavily on imports and are highly dependent on foreign countries. In order to ensure my country's energy security, it is necessary to increase the exploration and development of oil and gas resources in my country. One of the important factors restricting oil and gas development is the rock breaking of drill bits. efficiency. In order to improve oil and gas extraction efficiency and reduce drilling costs, researchers are constantly developing composite drill bits with higher rock-breaking efficiency. Among them, the rock-breaking mechanism and structural design of composite drill bits that combine PDC teeth and carbide teeth are research hotspots. [0003] At present, the research...

AI Technical Summary

Problems solved by technology

[0003] At present, the research of scientific research scholars mainly stays in the single rock-breaking mechanism of PDC tooth scraping or cemented carbide tooth impact, and there is a lack of research on the rock-breaking mechanism of the composite action of scraping and impact. The fixture of the impact compound rock-breaking test is used to carry out the corresponding compound rock-breaking experiment, which provides a theoretical basis for the rock-breaking mechanism and structural parameter design of the scraping and impact compound rock-breaking drill bit

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