公开(公告)号：US10233694B2

公开(公告)日：2019-03-19

申请号：US15323104

申请日：2015-06-23

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Wei Li ,  Hongxiang Lei ,  Qingyou Liu ,  Shihong Xiao ,  Xu Si ,  Tieshan Zhang ,  Qing Tu ,  Xiao Tan ,  Fanyao Jin ,  Xingming Wang ,  Yuan Zhong ,  Hang Li ,  Jianchuan Wu ,  Dengwei Li

IPC: E21B7/06 ,  E21B7/04 ,  E21B34/06

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.

公开(公告)号：US11067492B2

公开(公告)日：2021-07-20

申请号：US16604518

申请日：2018-11-26

Applicant: SouthWest Petroleum University

Inventor： Tianshou Ma ,  Nian Peng ,  Ping Chen ,  Xingming Wang ,  Qiang Wang ,  Jianhong Fu

IPC: G01N15/08 ,  G01N33/24 ,  E21B49/00 ,  E21B49/02

Abstract: A physical simulation and calibration device and method for formation pressure testing. The device has a rock core arranged in a rock core clamper, a confining pressure simulation module, formation pressure simulation module, annular pressure simulation module, suction system, thrust force simulation module and drive control system. The thrust force simulation module has a thrust rod which penetrates through a cavity wall on one side of the clamper. The front end of the thrust rod has a simulation probe. The suction system is connected to the thrust rod. The confining pressure simulation module, formation pressure simulation module, annular pressure simulation module, thrust force simulation module and suction system are all connected with the drive control system. The device and method simulate a physical environment of formation pressure testing to achieve physical simulation of formation pressure testing. A formation pressure tester can be corrected and calibrated.