公开(公告)号：US20210140244A1

公开(公告)日：2021-05-13

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: E21B10/18 ,  E21B10/16 ,  E21B41/00 ,  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：US20200040710A1

公开(公告)日：2020-02-06

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: E21B43/01 ,  E21B7/128 ,  E21B7/04 ,  E21B17/18 ,  E21B43/36

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：US20220268132A1

公开(公告)日：2022-08-25

申请号：US17537447

申请日：2021-11-29

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

Inventor： Yang TANG ,  Peng ZHAO ,  Guorong WANG ,  Jinhai ZHAO ,  Qingyou LIU ,  Jinzhong WANG ,  Guangjie YUAN ,  Yufa HE ,  Qingping LI ,  Xushen LI ,  Xiaoyu FANG ,  Zeliang LI ,  Xin JING

IPC: E21B41/00 ,  E21B34/10

Abstract: Disclosed is a cavity creation tool by crushing with multi-stage controllable water jet, which is used in natural gas hydrate development. The tool mainly consists of an inner tube upper joint, an inner tube lower joint, an intermediate sleeve, an inner structure consisting of a coaxial throttle push rod, an outer layer sleeve, an outer layer structure consisting of a supporting ring, a jet head mounted to the intermediate sleeve and threading the outer layer sleeve, and a jet crushing structure consisting of a single stage telescopic jet head and a second stage telescopic jet head.

公开(公告)号：US20220243564A1

公开(公告)日：2022-08-04

申请号：US17537437

申请日：2021-11-29

Applicant: Southwest Petroleum University

Inventor： Yang TANG ,  Zeliang LI ,  Guorong WANG ,  Qingyou LIU ,  Jinhai ZHAO ,  Guangjie YUAN ,  Jinzhong WANG ,  Yufa HE ,  Qingping LI ,  Chuanhua MA ,  Yuan HUANG

IPC: E21B41/00 ,  E21B43/38 ,  E21B43/34 ,  E21B43/40

Abstract: An in situ exploitation-separation-backfilling integration apparatus for natural gas hydrates is disclosed, consisting of a cyclonic inhalation device for coarse fraction, a jet flow device for sand discharge and a spiral cyclone device for fine fraction. The cyclonic inhalation device for coarse fraction is provided with a vortex trough and a cyclonic auxiliary flow channel; the jet flow device for sand discharge mainly consists of a sand discharge sliding sleeve, a sand discharge jet cylinder and a spring, wherein the sand discharge sliding sleeve can control the spraying out of hydraulic fluid and it is provided with a sand discharge butting head; inside the spiral cyclone device for fine fraction is a tapered structure and its upper portion is provided with a centering bracket.

公开(公告)号：US20220205347A1

公开(公告)日：2022-06-30

申请号：US17566556

申请日：2021-12-30

Applicant: Southwest Petroleum University

Inventor： Yang TANG ,  Haoyu XIONG ,  Guorong WANG ,  Jinzhong WANG ,  Jinhai ZHAO ,  Guangjie YUAN ,  Zhidong ZHANG ,  Xushen LI ,  Yufa HE ,  Jie WU ,  Xin JING ,  Peng ZHAO ,  Zeliang LI

IPC: E21B43/12 ,  E21B43/38 ,  E21B43/04

Abstract: Disclosed is an oil extraction and gas production method capable of in-situ sand control and removal by downhole hydraulic lift achieved by downhole oil extraction and gas production system and ground oil extraction and gas production system. The downhole systems mainly comprises a double-layer tube, a double-layer tube reducing joint, a double-layer tube packer, a hydrodynamic turbine motor, a sludge screw pump, a soil-sand separator and a negative pressure absorber; the ground system comprises a power fluid pressurizing module and a mix fluid treatment module. The present application lowers the difficulty of pumping and lifting downhole formation fluid; achieves downhole and in-situ sand control and sand discharge, alleviates the blockage and erosion of sand particles on equipments and reduces energy consumption; decreases the production cost and improves the operation efficiency, therefore is suitable for oil extraction and gas production in high sand content wells.

公开(公告)号：US20210199535A1

公开(公告)日：2021-07-01

申请号：US16982439

申请日：2019-04-04

Applicant: SOUTHWEST PETROLEUM UNIVERSITY ,  Chengdu University of Technology

Inventor： Jun LIU ,  Xiaoqiang GUO ,  Qingyou LIU ,  Yufa HE ,  Anchao WEI ,  Linlin ZENG ,  Jianxun WANG

IPC: G01M7/02

Abstract: The present invention discloses a testing device and method for simulating longitudinal-transverse-torsional coupled nonlinear vibration of a drill string in deep-water riser-free drilling. The testing device comprises a pool (1), a motor (2) and a hook load adjustment device (3), wherein a guide wheel (4) is provided on the top of the pool (1); a support seat A (5) and a support seat B (6) are fixed on the bottom surface of the pool (1); an organic glass tube (8) is fixed between the support seat A (5) and the support seat B (6); a casing (9) is respectively provided on the top surface of the support seat B (6) and the top surface of the trailer (7); the left end of the plastic tube (10) extends into the organic glass tube (8) along the axis of the organic glass tube (8). The present invention further discloses a simulation method. The present invention has the following beneficial effects: the structure is compact; the longitudinal-transverse-torsion coupled vibration responses of the drill string under different rotating speeds of the drill string, ocean flow rates, flow rates of the drilling fluid, torsional excitations and longitudinal excitations at the bottom of the formation section is simulated, thereby filling up the blank in the riser-free drilling system.

公开(公告)号：US20240044211A1

公开(公告)日：2024-02-08

申请号：US18347179

申请日：2023-07-05

Applicant: Southwest Petroleum University

Inventor： Yang TANG ,  Miantao GUAN ,  Yulin ZHANG ,  Peng ZHAO ,  Guorong WANG ,  Jinhai ZHAO ,  Qingyou LIU ,  Jinzhong WANG ,  Xiang GAO ,  Yufa HE ,  Hu DENG ,  Liming FAN ,  Rutao MA

IPC: E21B7/06 ,  E21B23/00 ,  E21B23/04

CPC classification number: E21B7/061 ,  E21B23/006 ,  E21B23/0411

Abstract: The disclosure relates to an omni-directional horizontally oriented deflecting tool for a coiled tubing, which includes an inner central pipe, an outer central pipe, a conical outer cylinder, a piston outer cylinder, an anchoring mechanism, a sealing mechanism, a reversing mechanism and a steering mechanism. The anchoring mechanism includes a cone, an O-shaped sealing ring I, a cone spring, a slip, a slip spring, a slip seat, a claw I and a pin shaft I, and the sealing mechanism includes a piston, an O-shaped sealing ring II, a claw II, a pin shaft II, an upper rubber cylinder seat, a rubber cylinder, a connecting cylinder, a lower rubber cylinder seat and a gasket.

公开(公告)号：US20240003473A1

公开(公告)日：2024-01-04

申请号：US18169145

申请日：2023-02-14

Applicant: Southwest Petroleum University

Inventor： Yang TANG ,  Yulin ZHANG ,  Guorong WANG ,  Yufa HE ,  Jianfei WEI ,  Jinhai ZHAO ,  Zeliang LI ,  Jinzhong WANG ,  Wang LI ,  Wujun TONG ,  Jie WANG

IPC: F16L29/00 ,  F16L53/34 ,  F16L37/00 ,  F16L37/30

CPC classification number: F16L29/007 ,  F16L53/34 ,  F16L37/004 ,  F16L37/30

Abstract: A pure electric modular subsea test tree is provided, which includes a connect-disconnect device, wherein the first channel is formed in the connect-disconnect device; the connect-disconnect device is provided with a locking assembly and a connection drive mechanism for driving the locking assembly, and the first electrical connection plug is embedded in the connect-disconnect device, and the connection drive mechanism is electrically connected with the first electrical connection plug; a shear-seal assembly, wherein a second channel communicated with the first channel is formed in the shear-seal assembly; the shear-seal assembly includes at least one shear-seal device capable of plugging the second channel; a connection part is formed on the shear-seal assembly; a heating device is arranged at one end of the shear-seal device far from the connection part. The disclosure relates to a pure electric modular subsea test tree, which has fast response speed and high operation safety.

公开(公告)号：US20220349292A1

公开(公告)日：2022-11-03

申请号：US17676250

申请日：2022-02-21

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

Inventor： Yang TANG ,  Zeliang LI ,  Guorong WANG ,  Xushen LI ,  Jiang LU ,  Xiaoyu FANG ,  Pengfei JING ,  Hairong ZHNAG ,  Lin ZHONG ,  Yufa HE ,  Qingping LI ,  Yanjun LI ,  Hexing LIU ,  Peng ZHAO

IPC: E21B43/36 ,  E21B43/34 ,  E21B43/01

Abstract: The disclosure discloses a solid fluidization tubular separator for marine natural gas hydrate, which includes a first separator and a second separator, wherein the first separator includes the first separation sleeve, the power liquid pipe, the swirl baffle, the recovery mechanism and the sand discharge mechanism. After the hydrate is sucked into the first separation sleeve to generate a circumferential velocity, so that the mud and sand with high density are separated to the pipe wall of the first separation sleeve, and the mud and sand separated to the pipe wall are settled down from the gap between the swirl baffle and the pipe wall along the pipe wall. The hydrate swirl flows into the recovery mechanism, and then leaves the first separation sleeve and enters the second separator, so as to realize the separation of mud and sand and natural gas hydrate.

公开(公告)号：US20210140243A1

公开(公告)日：2021-05-13

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 ,  E21B43/01 ,  E21B41/00

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.