The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2022
Filed:
Dec. 23, 2020
Cnpc Chuanqing Drilling Engineering Company Limited, Chengdu, CN;
Ccdc Petroleum Drilling & Production Technology CO Ltd, Guang Han, CN;
Liexiang Han, Guang Han, CN;
Zuo Chen, Chengdu, CN;
Bin Liu, Guang Han, CN;
Xiaofeng Yang, Chengdu, CN;
Sheng Yu, Guang Han, CN;
Jianlin Yao, Guang Han, CN;
Gang Zhou, Guang Han, CN;
Ming Feng, Guang Han, CN;
Shiming Dong, Guang Han, CN;
Kunpeng Yao, Guang Han, CN;
Weicheng Li, Guang Han, CN;
Lei Li, Guang Han, CN;
Xiaoping Fu, Guang Han, CN;
Zhijun Lyu, Guang Han, CN;
Wencai Chen, Guang Han, CN;
Yong Li, Guang Han, CN;
CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED, Chengdu, CN;
CCDC PETROLEUM DRILLING & PRODUCTION TECHNOLOGY CO LTD, Guang Han, CN;
Abstract
A dual-speed and dual-core enhanced drilling equipment which has an outer cylinder, a downhole power device, a large cutting head and a small cutting head. Specifically, the large cutting head has a first centerline, a through hole arranged along the first centerline and a first diameter. The outer cylinder, which is sleeved outside the downhole power device, is connected to the upper drill string with the large cutting head to enable rotation among the large cutting head, downhole power device and upper drill string. The downhole power device has a power generation section capable of generating power, and a rotation output section which connects to, and provides independent power for the small cutting head, so that the small cutting head revolves around the first centerline under the driving of the upper drill string while rotating under the driving of the downhole power device.