公开(公告)号：US11193333B2

公开(公告)日：2021-12-07

申请号：US17079655

申请日：2020-10-26

Applicant: Southwest Petroleum University ,  Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang)

Inventor： Yang Tang ,  Shunxiao Huang ,  Guorong Wang ,  Qingyou Liu ,  Shouwei Zhou ,  Xushen Li ,  Lin Zhong ,  Qingping Li ,  Yufa He ,  Zhong Li ,  Yanjun Li ,  Hexing Liu ,  Jianglin Zhu ,  Jiaxin Yao ,  Jiang Lu ,  Leizhen Wang

IPC: E21B7/18 ,  E21B41/00 ,  E21B43/01

Abstract: The present invention provides an automatic jet breaking tool for solid fluidization exploitation of natural gas hydrate, which mainly includes an upper joint, an outer cylinder, an inner sliding sleeve, a lockup sliding sleeve, a thrust bearing, a spring, a jet joint, a telescopic jet sprinkler, a plug block and an extrusion seal ring. The present invention mainly adopts the principle of throttling control pressure to control the position of the inner sliding sleeve by controlling a flow rate of a drilling fluid, so as to turn on and turn off the jet breaking tool. The application of the present invention can realize automatic jet breaking of solid fluidization exploitation of the natural gas hydrate, reduce procedures of a round trip operation, and effectively improve the efficiency and safety of the exploitation operation of the natural gas hydrate.

公开(公告)号：US11199050B2

公开(公告)日：2021-12-14

申请号：US17086398

申请日：2020-10-31

Applicant: Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) ,  Southwest Petroleum University

Inventor： Guorong Wang ,  Yang Tang ,  Xin Jing ,  Qingyou Liu ,  Shouwei Zhou ,  Xushen Li ,  Lin Zhong ,  Qingping Li ,  Yufa He ,  Zhong Li ,  Yanjun Li ,  Hexing Liu ,  Jianglin Zhu ,  Jiang Lu ,  Leizhen Wang

IPC: E21B10/32 ,  E21B10/43 ,  E21B41/00 ,  E21B10/18 ,  E21B10/16 ,  E21B10/25

Abstract: The present invention relates to a combined crushing super-variable-diameter drill bit for natural gas hydrate exploitation, including a joint, an outer cylinder connected to the joint by thread, a nozzle I mounted in the outer cylinder, a mechanical locking mechanism, a blade telescoping mechanism, an end cap connected to the outer cylinder by thread, a seal ring IV mounted to the end cap, and a nozzle II mounted in the end cap by threaded connection. The present invention achieves integrated operation of conventional drilling and draw-back expanding, which can effectively solve the problems that the existing hydrate drill bit cannot drill a large borehole, cannot mechanically lock an extending position of the blade to stabilize the size of the borehole, and a single crushing method is inefficient.

公开(公告)号：US10822927B2

公开(公告)日：2020-11-03

申请号：US16601562

申请日：2019-10-14

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Yang Tang ,  Guorong Wang ,  Shouwei Zhou ,  Qingyou Liu ,  Lin Zhong ,  Wang Li ,  Qingping Li ,  Qiang Fu ,  Yufa He ,  Chuan Wang ,  Leizhen Wang

IPC: E21B7/04 ,  E21B7/128 ,  E21B17/18 ,  E21B43/01 ,  E21B43/36 ,  E21B41/00

Abstract: Disclosed is a device for solid-state fluidized mining of natural gas hydrates in a shallow seabed, including: a sea surface support system, a pipeline delivery system, and an undersea drilling system. The sea surface support system includes a hydrate drilling vessel floating on seawater. The pipeline delivery system includes a continuous double-layer oil pipe, a recyclable conduit installed in a sediment cover, an open-hole steering packer installed outside the recyclable conduit. The undersea drilling system includes a hydrate slurry separator, a single screw pump, a hydraulic motor, a jet head and a differential pressure sliding sleeve close to the hydrate drill bit. The present invention has the following beneficial effects. The device achieves a multi-directionally horizontal drilling and production in the hydrate reservoir with a single well head, improving the drilling efficiency and single well production.

公开(公告)号：US10655436B2

公开(公告)日：2020-05-19

申请号：US16063703

申请日：2017-04-24

Applicant: SOUTHWEST PETROLEUM UNIVERSITY

Inventor： Qingyou Liu ,  Guorong Wang ,  Shouwei Zhou ,  Leizhen Wang ,  Rong Huang ,  Qingping Li ,  Qiang Fu

IPC: E21B43/01 ,  E21B43/24 ,  E21B43/36 ,  E21B43/40 ,  E21B49/00

Abstract: The present invention discloses a device for solid-state fluidization mining of seabed shallow layer non-diagenetic natural gas hydrates. The device comprises a hydraulic jet nozzle set, a coiled tubing, a hydrate collecting ship arranged on the sea surface, a transfer station arranged in sea water and a riser arranged in a seabed surface layer. A guide seat is arranged in the riser. The hydraulic jet nozzle set is arranged in the guide seat. A delivery pipe connected with the transfer station sleeves a nozzle body. An opening is formed in a position where the delivery pipe is in contact with the nozzle body. The transfer station is connected with the hydrate collecting ship. The present invention further discloses a method for collecting seabed shallow layer non-diagenetic hydrates.