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Patent Agency Ranking
1.发明授权公开(公告)号：US11988055B2
公开(公告)日：2024-05-21
申请号：US18092770
申请日：2023-01-03
Applicant: Southwest Petroleum University
Inventor： Gao Li , Pan Fang , Dong Xiao , Hongtao Li , Xu Yang , Yongjie Li , Yangyang Xu , Guo Liu
Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.
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2.发明公开公开(公告)号：US20230392464A1
公开(公告)日：2023-12-07
申请号：US18092770
申请日：2023-01-03
Applicant: Southwest Petroleum University
Inventor： Gao Li , Pan Fang , Dong Xiao , Hongtao Li , Xu Yang , Yongjie Li , Yangyang Xu , Guo Liu
Abstract: A controllable downhole drilling and completion tool separating device and their method of use are provided. The device includes an upper mandrel connector, an outer sleeve, a claw clamp sleeve, a claw clamp locking ring, a mandrel sleeve, a lower connector, a piston ring and a pressure bearing ball. The upper end of the lower connector is on the outer side of the upper connector in a sleeving mode. A first annular cavity is between the lower connector and the upper connector. The piston ring is on the outer side of the upper connector in a sleeving mode and located in the first annular cavity. The claw clamp sleeve and the outer sleeve are sequentially arranged on the outer side of the upper connector in a sleeving mode. A second annular cavity is communicated with the first annular cavity and formed between the claw clamp sleeve and the upper connector.
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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：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：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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