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公开(公告)号：US11054351B2
公开(公告)日：2021-07-06
申请号：US16305943
申请日：2017-09-27
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Abstract: A strain and acoustic wave testing device includes an acoustic wave transmitting terminal, an upper pressure-bearing shaft, corundum ejector pins, an upper displacement slide, a lower displacement slide, a heat insulation shell, a carbon fiber sleeve, a rock sample, a lower pressure-bearing shaft, an acoustic wave receiving terminal, a lower copper electrode, pearl powder, a temperature sensor, a transformer, a temperature-acoustic wave control box, an oscilloscope, an upper copper electrode, and a data collection and processing system.
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公开(公告)号：US12116888B1
公开(公告)日：2024-10-15
申请号：US18523841
申请日：2023-11-29
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Dong Xiao , Hongyu Xiao , Gao Li , Mingjie Liu , Pan Fang , Yachuan Liu
CPC classification number: E21B47/138 , E21B21/08 , E21B2200/20
Abstract: The present disclosure provides an impact simulation device and simulation method for characteristics of a rock chip bed in a large displacement well. The device comprises a wellbore system, a drilling fluid circulation system, a rock chip transportation system, a drill pipe control system, a data acquisition system, and a data processing system. The wellbore system is configured to simulate a horizontal annulus environment for rock chip transportation during drilling. The drilling fluid circulation system is configured to provide drilling fluid to the wellbore system and collect flow data of the drilling fluid. The rock chip transportation system is configured to simulate an output of rock chips in the horizontal annulus environment during drilling and recover the rock chips. The drill pipe control system is configured to implement drilling simulation in the wellbore system. The data acquisition system is configured to collect monitoring data during the drilling simulation and to transmit the monitoring data to the data processing system. The data processing system is configured to determine ECD correction parameters based on the monitoring data.
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公开(公告)号：US12146374B2
公开(公告)日：2024-11-19
申请号：US18159192
申请日：2023-01-25
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Hongtao Li , Gao Li , Jun Jiang , Wenhe Xia , Xu Yang
Abstract: The present invention discloses an active intelligent wellbore pressure control system, which includes a ground multi-parameter online monitoring system (86), a rotary blowout preventer (1), a wellhead back pressure compensation manifold, an automatic plugging material filling device (62), a drilling device, an MPD intelligent control system (87), a remote monitoring and control system (88), and a high-precision hydraulic calculation system (105). The present invention provides a wellbore pressure control thought of “plugging and control integration”, improves the pressure resistance of a formation by circularly plugging while drilling, realizes active control of a wellbore pressure, effectively broadens a “drilling safety density window” of the formation, reduces the requirements on the pressure control precision of a wellbore pressure control device, solves the problem that a conventional MPD technology cannot deal with the situation that the “drilling safety density window” of the formation is extremely narrow or even zero, and expands the application range of the MPD technology.
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公开(公告)号：US11162323B2
公开(公告)日：2021-11-02
申请号：US16847683
申请日：2020-04-14
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Gao Li , Long He , Zujun Jiang , Rui Li , Yi Feng
IPC: E21B33/134 , C04B14/20 , C04B18/18 , C04B18/24 , C04B26/26 , C09K8/42 , C09K8/44 , E21B33/138 , E21B49/00
Abstract: A multi-slug staged method for plugging a fractured formation includes: determining an average opening of fractures around a well as D, an average particle size of bridging particles for first-stage plugging as D1 that is slightly less than D, and average particle sizes of plugging particles for second to last-stage plugging as D2-Dn, where Dn is small enough to form a tight plugging layer; and sequentially injecting a plugging slurry only containing the bridging particles having the average particle size of D1, plugging slurries containing the plugging particles having the average particle sizes of D2-Dn-1, and a plugging slurry containing the plugging particles having the average particle size of Dn into the fractures to achieve the fractured formation plugging.
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公开(公告)号：US10415374B2
公开(公告)日：2019-09-17
申请号：US15922937
申请日：2018-03-16
Applicant: Southwest Petroleum University , Haohan Well Completion & Logging Science and Technology Limited Company
Inventor： Xingyu Chen , Yingfeng Meng , Gao Li , Yijian Chen , Yang Wang , Lunping Zhang
Abstract: A logging-while-drilling optical fiber communication device includes a rotary wireless transceiver module fixed on a protective connector; an active antenna of the rotary transceiver is placed in the first drill pipe by drilling hole through the protective connector; an optical fiber communication drawworks is located at the top of a second drill pipe, the optical fiber is downwardly released into other under-well drill pipes, the bottom of the optical fiber is connected with the well-bottom wireless receiving module; the lowest part of the drill pipe are provided with a drilling data acquisition device and a well-bottom wireless transmitting module. In the present invention, the optical fiber cable is used as transmission medium, by the means of modulating information data obtained by well logging into optical wave, and transmitting to the optical communication link, high-speed bi-directional transmission of well logging information can be realized.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09850716B2
公开(公告)日：2017-12-26
申请号：US15144821
申请日：2016-05-03
Applicant: Southwest Petroleum University
Inventor： Tiejun Lin , Ying Zhang , Zhanghua Lian , Qiang Zhang , Yong He , Gao Li , Taihe Shi , Hao Yu
CPC classification number: E21B10/44 , E21B7/046 , E21B21/16 , E21B44/005
Abstract: A remote-controlled adjustable-speed screw drill for gas-drive hydraulic-motive during gas drilling is provided, including a piston speed control system, a motor assembly, a cardan shaft assembly and a transmission shaft assembly which are connected with each other from up to down in sequence. The motor assembly includes air inlets, a cam, air cylinders, pistons, a connecting rod, air outlets, liquid inlets, hydraulic cylinders, liquid check valves, a liquid storage chamber, liquid outlets, a liquid injecting chamber, a liquid injecting hole, an anti-drop cap, a rotor, a stator, and a motor assembly housing. The present invention utilizes the high-pressure gas injected by the gas drilling to drive the pistons to move back and forth at high-speed, so as to drive the incompressible liquid within the driving screw to achieve the self-circulating motion, and the screw rotor is driven to rotate by the liquid.
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公开(公告)号：US12276166B2
公开(公告)日：2025-04-15
申请号：US18446810
申请日：2023-08-09
Applicant: Southwest Petroleum University
Inventor： Hongtao Li , Yingfeng Meng , Gao Li , Yijian Chen
Abstract: A device for preventing abrupt blockage in a blooie line of gas drilling includes a sand-storing tank body, which is connected to a rotating blowout preventer through a guiding tube, and a guiding three-way joint is set between the guiding tube and the sand-storing tank body and connected to the blooie line by a vertical guiding tube; the sand-storing tank body is connected to the blooie line by means of a gas discharge tube; a flap plate assembly is arranged at the position fronting straight onto the guiding three-way joint inside the sand-storing tank body, and configured to control the rock particles in the guiding tube to enter the sand-storing tank body, preventing blockage in the blooie line.
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公开(公告)号：US12024961B2
公开(公告)日：2024-07-02
申请号：US18151915
申请日：2023-01-09
Applicant: Southwest Petroleum University
Inventor： Gao Li , Hongtao Li , Yijian Chen , Dong Xiao , Jun Jiang , Wenhe Xia , Yongjie Li
Abstract: A remote intelligent active drilling pressure control system and method. The system includes a drilling pump, a rotary blowout preventer, a ground simple throttle control manifold, a wellhead back pressure compensation manifold, a graded filling device, a downhole storage-type pressure measuring device, a ground multi-parameter online monitoring system, a drilling hydraulic calculation system, an MPD intelligent control platform and a remote monitoring and control system. The present invention provides a wellbore pressure control thought of “plugging and control integration”, improves the pressure resistance of a formation by circularly plugging while drilling, realizes active control of a wellbore pressure, effectively broadens a “drilling safety density window” of the formation, and reduces the requirements on the pressure control precision of a wellbore pressure control device.
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公开(公告)号：US20240175323A1
公开(公告)日：2024-05-30
申请号：US18358016
申请日：2023-07-24
Applicant: Southwest Petroleum University
Inventor： Shiwei Niu , Yingxin YANG , Gao Li , Kuilin Huang , Chunliang Zhang , Haitao Ren , Lian Chen
Abstract: A torque-adaptive impact tool suitable for a PDC (Polycrystalline Diamond Compact) bit is provided, which includes a PDC bit, a rotary-driving power device, and a torque-adaptive impact tool above the PDC bit. The torque-adaptive impact tool is located between the PDC bit and the rotary-driving power device, includes an outer housing, an upper end cover, a main shaft, an elastic element, an upper impact body, and a lower impact body. In a case of a normal operation of the bit, the tool does not impact the bit, but rotates along with the rotary-driving power device for drilling. In a case that a rock-breaking torque required by the bit exceeds a driving torque, the tool impact the bit.
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公开(公告)号：US20230235635A1
公开(公告)日：2023-07-27
申请号：US18151915
申请日：2023-01-09
Applicant: Southwest Petroleum University
Inventor： Gao Li , Hongtao Li , Yijian Chen , Dong Xiao , Jun Jiang , Wenhe Xia , Yongjie Li
Abstract: A remote intelligent active drilling pressure control system and method. The system includes a drilling pump, a rotary blowout preventer, a ground simple throttle control manifold, a wellhead back pressure compensation manifold, a graded filling device, a downhole storage-type pressure measuring device, a ground multi-parameter online monitoring system, a drilling hydraulic calculation system, an MPD intelligent control platform and a remote monitoring and control system. The present invention provides a wellbore pressure control thought of “plugging and control integration”, improves the pressure resistance of a formation by circularly plugging while drilling, realizes active control of a wellbore pressure, effectively broadens a “drilling safety density window” of the formation, and reduces the requirements on the pressure control precision of a wellbore pressure control device.
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