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公开(公告)号：US12055040B1
公开(公告)日：2024-08-06
申请号：US18413509
申请日：2024-01-16
Inventor： Yifan Zeng , Weihong Yang , Qiang Wu , Xuan Xiao , Kai Pang , Xinjiang Wei , Xue Liu , Han Bao
IPC: E21B7/06
Abstract: A curvature controllable directional drilling device is disclosed. The drilling device includes: a drill bit, a power unit, a rigid bending unit, a bendable outer wall, and a wedge deflection tool. The power unit is to provide a rotary power to the drill bit. The rigid bending unit is set between the drill bit and the power unit, to bend on a basis of an initial curvature under an external force. The bendable outer wall is set on an outer side of the power unit and the rigid bending unit. The wedge deflection tool is set at one end of the bendable outer wall near the drill bit, to receive a reaction force and bend the rigid bending unit. By a coordination between the wedge deflection tool and the power unit, a drilling direction of the drill bit connected to the rigid bending unit can be adjusted.
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公开(公告)号：US11781429B1
公开(公告)日：2023-10-10
申请号：US18332606
申请日：2023-06-09
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING , University of Mining and Technology-Beijing Inner Mongolia Research Institute
Inventor： Yifan Zeng , Qiang Wu , Weihong Yang , Zhaolai Hua , Yanping Miao , Lu Wang , Kai Pang , Lei Yang , Aoshuang Mei , Shihao Meng , Han Bao , Xue Liu , Xuan Xiao
Abstract: A method for blocking mine water inrush includes: grouting first slurry into an interface between the quaternary aquifer and the weathered bedrock aquifer in a fracture grouting manner until a first preset condition is met; forming a first water-resisting cushion after the first slurry is solidified; drilling a curve branch drill hole in the surface horizon downward; grouting second slurry into the curve branch drill hole in a downward grouting manner until a second preset condition is met; forming a second water-resisting cushion after the second slurry is solidified; grouting third slurry onto a top of the first water-resisting cushion in an upward grouting manner until a third preset condition is met; forming a third water-resisting cushion after the third slurry is solidified; wherein the third water-resisting cushion is located on the top of the first water-resisting cushion.
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3.发明授权公开(公告)号：US11459849B1
公开(公告)日：2022-10-04
申请号：US17730031
申请日：2022-04-26
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING , Shaanxi Coal Caojiatan Mining Co., Ltd.
Inventor： Yifan Zeng , Qiang Wu , Zhaolai Hua , Rui Wang , Zhenzhong Pang , Lu Wang , Yang Lv , Xin Du , Kai Pang , Aoshuang Mei
Abstract: A sealing method for a drilled hole in three zones of overburden comprises: blocking the fissure zone and the caving zone with at least one filling bag; and transporting prepared cement slurry to the drilled hole through a hollow drill pipe, so as to block the curved subsidence zone. The three zones of overburden comprise a fissure zone, a caving zone and a curved subsidence zone.
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4.发明授权公开(公告)号：US09897585B2
公开(公告)日：2018-02-20
申请号：US14801917
申请日：2015-07-17
Inventor： Qiang Wu , Lei Niu , Shucai Li , Shouqiang Liu , Yifan Zeng
CPC classification number: G01N33/24
Abstract: A geomechanical fluid-solid coupling testing device for water inrush from coal mine collapse column, which has a testing bed and a collapse column simulating device, wherein the testing bed has a box type structure with an opening at its top and is provided therein with multiple layers of similar materials in which a tunnel or a mining face can be dug out; and the collapse column simulating device comprises a plexiglass barrel with openings at both its top and bottom, the plexiglass barrel is provided at its top opening with a plexiglass lifting device and a hard plastic baffle, and the plexiglass lifting device is provided with a lifting level which is connected with a lifting rope.
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5.发明授权公开(公告)号：US12241340B1
公开(公告)日：2025-03-04
申请号：US18915252
申请日：2024-10-14
Inventor： Yifan Zeng , Donghui Yang , Qiang Wu , Junhao Ren , Zilong Yuan , Fulong Zhai , Jia Zhao , Hao Li
Abstract: A coal and coalbed methane mining system based on ground drilling includes: a drilling component, a coal mining drill bit and a ground facility group. The coal mining drill bit is set at a predetermined end of a directional borehole in a coal seam, connected to the drilling component through a connecting pipeline. The ground facility group is connected to the drilling component, to provide coal cutting slurry for the coal mining drill bit, receive reflux slurry carrying coal and coalbed methane, and precipitate and separate the reflux slurry carrying the coal and the coalbed methane. A coal and coalbed methane mining method based on ground drilling and related devices are also disclosed.
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Patent Agency Ranking
公开(公告)号：US12140025B1
公开(公告)日：2024-11-12
申请号：US18735748
申请日：2024-06-06
Inventor： Yifan Zeng , Weihong Yang , Qiang Wu , Xuan Xiao , Kai Pang , Xinjiang Wei , Xue Liu , Aoshuang Mei , Shihao Meng , Chao Yu
IPC: E21B7/06 , E21B47/022
Abstract: A directional drilling method applied to a rigid bending joint directional drilling device includes: obtaining geological data; determining a lateral drilling point and a target point of a branching borehole based on the geological data; drawing a target borehole trajectory of the branching borehole based on the lateral drilling point and the target point; obtaining parameters of the drill pipe; determining a propulsion force corresponding to the target borehole trajectory based on the parameters, the target borehole trajectory, and the geological data; and applying the propulsion force to the rigid bending joint directional drilling device for drilling the branching borehole. A directional drilling system and related devices are also disclosed.
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公开(公告)号：US12129620B1
公开(公告)日：2024-10-29
申请号：US18600416
申请日：2024-03-08
Inventor： Yifan Zeng , Weihong Yang , Qiang Wu , Kai Pang , Xinjiang Wei , Xue Liu , Xuan Xiao , Aoshuang Mei , Shihao Meng , Chao Yu
CPC classification number: E02D3/12 , E02D2250/003 , E21B33/13
Abstract: Disclosed is a method for repairing an aquifer in a coal mine area by grouting, including: drilling a survey hole in a ground area corresponding to a water inflow position from ground surface to a caving zone in a goaf; determining a target layer for grouting in the survey hole based on drilling data collected from the survey hole while drilling; changing the survey hole to a grouting hole; measuring a first water level from the grouting hole; grouting through the grouting hole; changing the grouting hole to an observation hole; measuring a second water level from the observation hole; and determining a water retention level based on the first water level and the second water level.
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公开(公告)号：US11879327B2
公开(公告)日：2024-01-23
申请号：US17465015
申请日：2021-09-02
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING , WUHAN CHANGSHENG MINE SECURITY TECHNOLOGY LIMITED
Inventor： Qiang Wu , Chunsheng Liu , Yifan Zeng , Liu Liu , Fengjuan Tao , Gang Hu
Abstract: Disclosed is a system and a method of transient electromagnetic advanced detection. The system includes a detection host, an electromagnetic signal transmitter, a probe, and a communication device. The system and method of transient electromagnetic advance detection disclosed by examples of the present disclosure can realize an early-warning through a transient electromagnetic advance detection in a borehole while drilling the borehole in a tunnel or a roadway.
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公开(公告)号：US12287445B1
公开(公告)日：2025-04-29
申请号：US18939876
申请日：2024-11-07
Inventor： Yifan Zeng , Xianhui Wang , Qiang Wu , Chunsheng Liu , Fei Chen , Jia Zhao , Zhuangjie Cui
Abstract: A coal rock interface directional detection device based on elastic waves includes: a probe body including an elastic wave receiving device and an elastic wave excitation device spaced set at the top; a protective tube with one end connected to the adapter. The protective tube includes a collection circuit board inside the protective tube, and the collection circuit board is electrically connected to the elastic wave receiving device and the elastic wave excitation device; a sleeve, installed outside the protective tube, with one end connected to the side of the probe body near the adapter and with the other end connected to the side of the protective tube away from the adapter; and a control host, wirelessly connected with the acquisition circuit board. A coal rock interface directional detection method based on elastic waves applied in the coal rock interface directional detection device is also disclosed.
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公开(公告)号：US12241371B1
公开(公告)日：2025-03-04
申请号：US18760362
申请日：2024-07-01
Inventor： Yifan Zeng , Donghui Yang , Qiang Wu , Hao Li , Junhao Ren , Zeyang Liu , Jia Zhao , Zilong Yuan
Abstract: Disclosed are an integrated mining method and an integrated mining system of coal breaking, coal extraction and water circulation in a U-well. The integrated mining system includes a first ground facility unit, a second ground facility unit, a jet unit and an extraction unit. The first ground facility unit is configured to transport jet fluid to the jet unit. The jet unit is configured to break a coal seam in a sub-segment to obtain broken cinders. The extraction unit is configured to extract a coal-water mixture. The second ground facility unit is configured to receive the coal-water mixture. In response to determining that an extraction of the sub-segment is complete, the jet unit and the extraction unit is configured to move to a next sub-segment using powers provided by the first ground facility unit and the second ground facility unit.
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