Steerable drilling device

US12252986B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD · CN
• SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD · CN
• SINOPEC MATRIX CORPORATION · CN
• GEOSTEERING & LOGGING RESEARCH INSTITUTE, SINOPEC MATRIX CORPORATION · CN

Inventors

• Qingming Ma · Santa Clara, US
• Jieran Zhu · Shandong, CN
• Ningning YANG · Shandong, CN
• Guangquan Li · Beijing, CN
• Yufeng Li · Morrisville, US
• Nan-Chun Lin · Hengshan, TW
• Haiquan Tang · Shandong, CN
• Haiyang Du · Shandong, CN
• Chao LU · Beijing, CN

Key dates

• Filing date: Oct 15, 2021
• Grant date: Mar 18, 2025
• Expiry date: Nov 5, 2041

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B47/022
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A steerable drilling device has an outer tube extending along a longitudinal axis; a drill bit joint inserted into said outer tube, a lower end of said drill bit joint extending out of a lower end of said outer tube for connection to a drill bit; a joint drive mechanism, provided in said outer tube and configured to drive said drill bit joint to swing relative to the longitudinal axis; and a lower connection mechanism. The lower connection mechanism has a connection body connected to said joint drive mechanism in such a manner that said joint drive mechanism is non-rotatable with respect to said connection body, a first centralizer arranged between said connection body and said outer tube, a circuit system arranged in said connection body and configured to provide an electrical signal to said joint driving mechanism, and an attitude sensor arranged in said connection body.