Split roller cone and PDC composite drill bit

US10822881B2 · kind B2 · utility

Assignee

• Southwest Petroleum University · CN

Inventors

• Jialin Tian · Chengdu, CN
• Yinglin Yang · Plano, US
• Hongzhi He · Chengdu, CN
• Lin Yang · Shanghai, CN
• Jie Xiong · Chengdu, CN
• Yi Zhou · 红钢城街道, CN
• Siqi ZHOU · Chengdu, CN
• Genyin Li · Chengdu, CN

Key dates

• Filing date: May 22, 2019
• Grant date: Nov 3, 2020
• Expiry date: May 22, 2039

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/10
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A split roller cone and polycrystalline diamond compact (PDC) composite drill bit, including a PDC bit module, a split roller cone bit module, and a drill bit body module. The split roller cone bit module has split structure, and during the operation, the lower roller cone body and the upper roller cone body revolve with the drill bit, and rotate around the axle neck of the palm respectively, thereby achieving the task of scraping and breaking rocks. The tooth scraping efficiencies of the small-end ring gear and the middle ring gear are improved. The split roller cone bit module, the PDC bit module, and the drill bit body module can be mass-produced. The split roller cone bit module and the PDC bit module can be quickly assembled and disassembled with the drill bit body module and different sizes of PDC bit modules are assembled with the bit body module.