公开(公告)号：US10690281B2

公开(公告)日：2020-06-23

申请号：US16062117

申请日：2016-07-18

Applicant: Chengdu University of Technology ,  SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Qingyou Liu ,  Haiyan Zhu ,  Xu Luo ,  Guorong Wang

IPC: F16L55/34 ,  F16L55/32 ,  B25J9/10 ,  B25J9/16 ,  B25J18/02 ,  B25J11/00

Abstract: A pipeline robot capable of steering actively comprises at least two driving knuckles and at least one steering knuckle. Every two adjacent driving knuckles are connected by the steering knuckle. A front end cover is fixed on the front end surface of the driving knuckle at the most front end. A sensor is mounted in the center of the front end cover. A rear end cover is fixed on the rear end surface of the driving knuckle at the rearmost end. A universal spherical hinge is arranged in the center of the rear end cover. Each driving knuckle comprises a main frame, driving mechanisms and telescopic mechanisms; the telescopic mechanisms are mounted in the main frame, and capable of causing contraction of the driving mechanisms into the main frame. The steering knuckle can drive the front driving knuckle connected thereto to steer.

公开(公告)号：US12264544B2

公开(公告)日：2025-04-01

申请号：US18508923

申请日：2023-11-14

Applicant: Chengdu University of Technology

Inventor： Jianguo Zhao ,  Qingyou Liu ,  Haiyan Zhu ,  Min Wan ,  Guorong Wang ,  Xuecheng Dong ,  Xu Luo ,  Yingju Pei ,  Xingming Wang

IPC: E21B23/00 ,  E21B23/14 ,  E21B47/06 ,  E21B47/09 ,  E21B47/13

Abstract: A downhole traction system includes a driving system and a downhole wheeled tractor. The driving system is connected with the downhole wheeled tractor; the downhole wheeled tractor comprises a tractor body, a power unit and a plurality of traction units; the plurality of traction units are arranged along the extension direction of the tractor body; each of the traction units comprises a driving arm, a supporting arm, a supporting wheel, a driving assembly and a supporting assembly; the driving arm and the supporting arm are movably connected with the tractor body; and the supporting wheel is connected with the driving arm and the supporting arm. When the supporting assembly drives the supporting arm to extend along the radial direction of the tractor body under the hydraulic drive action of the hydraulic power unit, the supporting wheel can be abutted against the well wall.

公开(公告)号：US12110794B2

公开(公告)日：2024-10-08

申请号：US18463876

申请日：2023-09-08

Applicant: Chengdu University of Technology

Inventor： Qingyou Liu ,  Jianguo Zhao ,  Guorong Wang ,  Haiyan Zhu ,  Xuecheng Dong ,  Xingming Wang ,  Xu Luo ,  Yingju Pei ,  Xianwei Dai

IPC: E21B7/06 ,  E21B17/042 ,  E21B31/00 ,  E21B34/06 ,  E21B47/06 ,  E21B47/13

CPC classification number: E21B7/067 ,  E21B17/042 ,  E21B31/00 ,  E21B34/066 ,  E21B47/06 ,  E21B47/13

Abstract: Provided is a two-stage reverse-torque bent screw orientation tool. An existing bent screw orientation technology has the technical problems of large friction resistance, difficult control of a borehole track, a low drilling speed and the like, and restricts economic, safe and long-acting development of oil and gas. In order to solve the above problems, the two-stage reverse-torque bent screw orientation tool is invented and composed of a first-stage clutch mechanism and a second-stage clutch mechanism, and the first-stage clutch mechanism and the second-stage clutch mechanism are both composed of a battery, a battery compartment, a pressure sensor, an electromagnetic valve, a body, a plug, a piston, an outer tooth cylinder, an inner tooth cylinder, a transmission cylinder, a connecting cylinder, a bearing, a limiting cylinder, a lower joint, a thrust bearing, a battery compartment, a circuit board, a cover plate and the like.