PDC drill bit with stable tool face for directional drilling

A directional drilling and tool face technology, applied in directional drilling, drill bits, drilling equipment, etc., can solve problems such as poor stability and PDC bit drilling direction deviation, achieve accurate drilling direction, increase drilling stability, and reduce impact. Effect
CN113294096AActive Publication Date: 2021-08-24河北锐石钻头制造有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
河北锐石钻头制造有限公司
Publication Date
2021-08-24

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Abstract

The invention relates to the technical field of PDC drill bits, in particular to a PDC drill bit with a stable tool face for directional drilling. The drill bit can effectively prevent a drilling direction from deviating, is provided with the stable tool face, and comprises a drill bit base body, a drill handle is arranged at the top end of the drill bit base body, first hard layers are arranged on the surfaces of the bottom end and the side face of the drill bit base body, several first blades are evenly arranged at the bottom end and the side face of the drill bit base body, a positioning drill is arranged in the middle of the bottom end of the drill bit base body and comprises a positioning drill base body and several second blades, each second blade is arranged between the bottom end and the side face of the positioning drill base body, a second hard layer is arranged on the surface of each positioning drill base body, several chip grooves are formed in the bottom end of each first blade, each chip groove is in an arc shape, and the radius of each chip groove away from the middle of the drill bit base body is larger than that of the chip groove close to the middle of the drill bit base body.
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Description

technical field

[0001] The invention relates to the technical field of PDC drill bits, in particular to a PDC drill bit for directional drilling with a stable tool face. Background technique

[0002] As we all know, PDC drill bit (polycrystalline diamond compact drill bit) is the most commonly used drilling tool in oil drilling engineering. With the continuous advancement of cutting tooth material technology and bit design technology, its unique drilling safety, structural flexibility and efficient cutting performance for shearing and breaking rock make the PDC bit more suitable for formation in oil and gas drilling engineering. According to statistics, most of the total drilling footage in the world is completed by PDC bits, which occupies an absolutely important position.

[0003] But today's PDC drill bit finds in use, when the PDC drill bit used in directional drilling is in use today, the drilling depth of the PDC drill bit is longer, and the stability of its PDC drill...

Claims

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