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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
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.
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Patent Agency Ranking
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
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.
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公开(公告)号：US11773653B2
公开(公告)日：2023-10-03
申请号：US17044125
申请日：2019-12-23
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Guorong Wang , Lin Zhong , Qingyou Liu , Shouwei Zhou , Xingyong Yu , Zhong Li , Yang Tang , Qiang Fu , Xin Huang , Yanjun Li , Hexing Liu
IPC: E21B7/12 , E21B17/01 , E21B17/08 , E21B33/076
CPC classification number: E21B7/12 , E21B17/01 , E21B17/085 , E21B33/076
Abstract: A double-layer coiled tubing double-gradient drilling system, on the basis of conventional drilling equipment, includes a double-layer coiled tubing system, separating fluid, a downhole lifting pump system, throttling control systems and a data monitoring system. Power fluid enters an annular space of the tubing through an adapter, passes through a downhole lifting pump, enters an inner pipe through a bridge channel, and enters the bottom hole through the drill bit. Return fluid enters an annular channel of the tubing through a recovery hole, then enters the inner pipe through the bridge channel and enters the lifting pump, and then enters a solid control system through the adapter and the control systems in sequence. Gradient control of the bottom hole pressure is realized through monitoring of the separating fluid and control of the drilling pump unit and throttling control systems. The problem of narrow safe drilling density window is solved.
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公开(公告)号：US11746640B2
公开(公告)日：2023-09-05
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 , Xushen Li , Jiang Lu , Xiaoyu Fang , Guorong Wang , Pu Yang , Jinhai Zhao , Xiaolong Ma , Dongqing Xia , Lin Zhong , Yufa He , Qingping Li , Yanjun Li , Hexing Liu , Peng Zhao
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.
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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
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.
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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
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.
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