Drilling insert, roller cone bit and drilling insert machining method

A processing method and tooth inserting technology, which is applied to drill bits, earthwork drilling, drilling equipment, etc., can solve the problems of low working efficiency and stress dispersion in hard strata, achieve good rock breaking effect and improve working efficiency

Active Publication Date: 2019-08-20
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Under the spherical tooth, the stress distribution of the rock decreases from the central contact surface in a circular manner, and the stress is dispersed, but the work efficiency is low for hard formations

Method used

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  • Drilling insert, roller cone bit and drilling insert machining method
  • Drilling insert, roller cone bit and drilling insert machining method

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Embodiment Construction

[0041] The core of the present invention is to provide a drilling insert to improve the working efficiency of the roller cone bit in hard formations. Another core of the present invention is to provide a roller cone bit comprising the above-mentioned drilling insert. Another core of the present invention is to provide a method for processing drilling inserts.

[0042] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0043] Please refer to figure 1 and figure 2 .

[0044] In a specific embodiment, the drilling insert provided by the specific embodiment of the present invention is preferably used in drilling equipment such as oil drilling, geological exploration, and water well, and specifically includes an insert tooth part 1, and the insert tooth part 1 includes a The drilling sur...

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Abstract

The invention discloses a drilling insert, a roller cone bit and a drilling insert machining method. The drilling insert comprises an insert tooth portion. The insert tooth portion comprises a drilling surface arranged at the top portion and chip removal inclined surfaces arranged on the side. The drilling surface is of a plane structure. Recessed tooth grooves are formed between the two adjacentchip removal inclined surfaces in the insert tooth portion. The top ends of the tooth grooves are connected with the drilling surface. According to the drilling insert, the roller cone bit and the drilling insert machining method, the tooth grooves are formed between the two adjacent chip removal inclined surfaces, the top ends of the tooth grooves are jointed with the drilling surface, that is, the drilling surface is provided with a notch structure, and the drilling surface is of a multi-tooth structure. The drilling surface and the tooth grooves meet the stress concentration at the joint corner positions, and the rock breaking force is large. The insert has better rock breaking effect under the larger driving force, so that the working efficiency in the hard formation is improved.

Description

technical field [0001] The invention relates to the field of technical drilling equipment, in particular to an insert for drilling. The present invention also relates to a roller cone bit comprising the above-mentioned drilling insert. The invention also relates to a method for processing an insert for drilling. Background technique [0002] The roller cone bit is one of the important tools in oil drilling and geological drilling. The teeth on the toothed roller cone bit are cemented carbide teeth mounted on the outer cone of the cone to break the formation. During the rock-breaking process of engineering drilling, the teeth produce pressing, crushing, shearing and impacting effects on the rock. The roller cone bit is composed of more than 20 parts such as cutting structure, bearing structure, locking element, oil storage sealing device, nozzle device and so on. The cutting structure includes cones and teeth. The cone is a vertebral body with teeth on it. It is divided in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/52B22F9/08C22C29/08C22C37/06C23C4/067C23C4/129C23C24/04
CPCB22F9/082C22C29/067C22C29/08C22C37/06C23C24/045C23C4/067C23C4/129E21B10/52
Inventor 康嘉杰岳文苏娟付志强朱丽娜佘丁顺王成彪梁健翁炜田斌黄飞
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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