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:
Mar. 19, 2019
Filed:
Jun. 23, 2015
Southwest Petroleum University, Chengdu, CN;
Wei Li, Chengdu, CN;
Hongxiang Lei, Chengdu, CN;
Qingyou Liu, Chengdu, CN;
Shihong Xiao, Chengdu, CN;
Xu Si, Chengdu, CN;
Tieshan Zhang, Chengdu, CN;
Qing Tu, Chengdu, CN;
Xiao Tan, Chengdu, CN;
Fanyao Jin, Chengdu, CN;
Xingming Wang, Chengdu, CN;
Yuan Zhong, Chengdu, CN;
Hang Li, Chengdu, CN;
Jianchuan Wu, Chengdu, CN;
Dengwei Li, Chengdu, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
A rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector has a ball-socketed ball-joint rod, and a drill bit is connected to the ball-socketed ball-joint rod. Several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector, wherein a piston matches each piston hole and a piston rod connected to the piston is movably connected to the ball-socketed ball-joint rod. An eccentrically-placed valve core is connected to a controller provided in an upper connector, wherein a working face of the eccentrically-placed valve core is opposite to the piston holes and rotation of the eccentrically-placed valve core makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod.