公开(公告)号：US11408239B2

公开(公告)日：2022-08-09

申请号：US17485861

申请日：2021-09-27

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Buyan Wan ,  Yongping Jin ,  Fenfei Peng ,  Jialiang Wang ,  Huan Liu

IPC: E21B25/02 ,  E21B25/08 ,  E21B25/16

Abstract: A long-distance core drilling method suitable for a horizontal geological core drilling rig. (1) An active drill rod is connected to a drill rod, which is connected to a wireline-coring outer-tube drilling tool. (2) A steel-pipe string is connected to a fishing device, and the fishing device is connected to a spearhead on a core tube, which is placed to a designated position through a pipe-feeding mechanism. (3) A washing pump is started. (4) A core drilling is carried out. (5) A core is pulled out. (6) The steel-pipe string and the fishing device are reconnected. (7) The core tube is salvaged. (8) The core tube and drill pipe are replaced. (9) A hole is swept. (10) Steps (1)-(9) are repeated until the hole is drilled to a designated depth. (11) The core tube and the wireline-coring outer-tube drilling tool are recovered.

公开(公告)号：US11408227B2

公开(公告)日：2022-08-09

申请号：US17485739

申请日：2021-09-27

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Buyan Wan ,  Yongping Jin ,  Fenfei Peng ,  Jialiang Wang ,  Huan Liu

IPC: E21B1/38 ,  E21B1/26 ,  E21B7/04 ,  E21B31/113 ,  E21B4/06 ,  E21B15/04 ,  E21B25/00

Abstract: A horizontal drilling machine with an impact device, including a support frame, an armored cable, a cable-straightening mechanism, a cable-feeding mechanism, a power head, a drill pipe, a rotating chuck, a damper, a fishing device with the impact device, a core tube and a thrust cylinder. One end of the thrust cylinder is hinged with the support frame, and the other end of the thrust cylinder is connected to the power head. The power head is arranged on a slid rail of the support frame. An active drill pipe of the power head is connected to the drill pipe. An end of the armored cable is connected to a control system, and the other end is connected to the fishing device in the drill pipe. A fishing head of the fishing device is connected to a spearhead of the core tube.

公开(公告)号：US11505997B2

公开(公告)日：2022-11-22

申请号：US17485712

申请日：2021-09-27

Applicant: HUNAN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Buyan Wan ,  Yongping Jin ,  Fenfei Peng ,  Jialiang Wang ,  Huan Liu

IPC: E21B7/04 ,  E21B3/02 ,  E21B19/08 ,  E21B19/10 ,  E21B19/16 ,  E21B31/18 ,  E21B49/00

Abstract: A horizontal drilling machine with an in-situ detection device, including a support frame, an armored cable, a steel pipe-straightening mechanism, a steel pipe-feeding mechanism, a motor, a power head, a drill pipe, a rotating chuck, a damper, a non-core drilling tool, the in-situ detection device, a fishing device and a thrust cylinder. The steel pipe-straightening mechanism, the steel pipe-feeding mechanism, the rotating chuck and the damper are sequentially fixed on the support frame from left to right. One end of the thrust cylinder is hinged with the support frame, and the other end is connected to the power head. The active drill pipe of the power head is connected to the drill pipe. An end of the armored cable is connected to the fishing device in the drill pipe, and the fishing head of the fishing device is connected to the spearhead of the non-core drilling tool.