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公开(公告)号：US20190024504A1
公开(公告)日：2019-01-24
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
IPC: E21B47/12
CPC classification number: E21B47/123 , G02B6/4428 , G02B6/504
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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公开(公告)号：US20240166936A1
公开(公告)日：2024-05-23
申请号：US18305910
申请日：2023-04-24
Applicant: Southwest Petroleum University , Yao Bai Special Cement Technology Research and Development Co., Ltd.
Inventor： Gao LI , Hongtao LI , Yijian CHEN , Dong XIAO , Jun JIANG , Wenhe XIA , Yongjie LI
CPC classification number: C09K8/467 , C04B14/024 , C04B24/20 , C04B24/2652 , C04B28/02 , C04B40/0046 , C04B2103/408
Abstract: A method for preparing heat-conductive cement slurry for well cementation includes the following steps: S1, uniformly mixing sodium 1-butanesulfonate, sodium dodecyl diphenyl ether disulfonate and polyvinylpyrrolidone to obtain an admixture; S2, dissolving the admixture in deionized water and stirring to obtain a dispersant solution; S3, adding graphite to the dispersant solution and stirring to obtain a graphite dispersion; S4, stirring cement and deionized water in a slurry cup to obtain cement slurry; and S5, mixing and stirring the graphite dispersion and the cement slurry to obtain the heat-conductive cement slurry. The heat-conductive cement slurry can effectively improve the heat conductivity coefficient of set cement, and significantly improve the heat conductivity of the set cement, and has a broad market application prospect.
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Patent Agency Ranking
公开(公告)号：US20200217193A1
公开(公告)日：2020-07-09
申请号：US16305895
申请日：2017-09-27
Applicant: SOUTHWEST PETROLEUM UNIVERSITY
Inventor： Gao LI , Yi FENG , Shunhui YANG , Yijian CHEN , Na WEI , Yingfeng MENG , Rui LI
Abstract: A mineshaft-stratum fracture coupled flowing simulation experiment device includes a simulated mineshaft flowing system, a simulated stratum system, a simulated fracture system and a data acquisition system. The simulated mineshaft flowing system includes simulated mineshaft, simulated drilling rod, drilling fluid storage tank, stirring motor, and drilling fluid screw pump. The simulated drilling rod is located in center of the simulated mineshaft. The stirring motor is provided in the drilling fluid storage tank. The drilling fluid screw pump is connected to an inlet end of the simulated drilling rod through the drilling fluid storage tank. The simulated stratum system includes simulated stratum, clean water storage tank, separation tank, gas storage tank, gas air-compressor, and clean water screw pump. The gas storage tank is connected to the gas air-compressor and is connected to the simulated stratum through a gas pressure regulating valve.
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公开(公告)号：US20230095056A1
公开(公告)日：2023-03-30
申请号：US17952351
申请日：2022-09-26
Applicant: Southwest Petroleum University , Haohan Well Completion & Logging Science and Technology Limited Company
Inventor： Xingyu CHEN , Yingfeng MENG , Gao LI , Yijian CHEN , Hongtao LI , Lunping ZHANG , Kejing WANG
IPC: E21B47/18
Abstract: A pressure pulse communication system and method during gas drilling are provided. The system includes a downhole solenoid valve module and a sensor module, where the downhole solenoid valve module includes a valve body, a gas inlet, a piston micro-hole, a moving piston, a piston return spring, a piston cylinder, a gas outlet, a piston pressure relief hole, a solenoid valve spring, a solenoid valve, a battery, a pressure balancer, and a rubber seal. The pressure pulse communication system and method generate pressure pulses by changing the internal pressure of a drill pipe, such that a surface pressure sensor continuously receives the pressure pulses, thereby achieving the purpose of acquiring downhole temperature, pressure, and well inclination angle data.
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公开(公告)号：US20200333221A1
公开(公告)日：2020-10-22
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：US20230235636A1
公开(公告)日：2023-07-27
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
CPC classification number: E21B21/08 , E21B33/06 , E21B21/106 , G05D16/18 , E21B21/065
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 MIPD technology.
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7.发明申请公开(公告)号：US20230074074A1
公开(公告)日：2023-03-09
申请号：US17543426
申请日：2021-12-06
Applicant: Southwest Petroleum University
Inventor： Wenhe XIA , Wanjun HU , Gao LI , Yongjie LI , Jun JIANG , Xiangdong CHEN
Abstract: The present invention discloses an intelligent recognition method for while-drilling safety risks based on a convolutional neural network. The method includes the following steps: 1, processing while-drilling safety risk parameter features and data, and establishing a correlation analysis model for monitoring-while-drilling parameters by using a Pearson coefficient correlation analysis method; 2, processing while-drilling safety monitoring data, analyzing a time span of each sample, constructing training sample data and test sample data, and preprocessing the samples; 3, designing a while-drilling safety risk recognition network structure; and 4, recognizing while-drilling safety risks by the trained safety risk recognition network. The method of the present invention is applied to monitoring-while-drilling engineering, which can greatly improve the drilling efficiency and a reservoir drilling rate, reduce a complex accident rate and cost in drilling, provide a powerful safety guarantee for drilling work, meet the current urgent demands for cost reduction and efficiency enhancement in drilling to a certain extent, and also provide a new idea for the development of intelligent drilling technologies in China.
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