-
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.
-
2.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.
-
3.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.
-
-
Search Results
3
records
(took 0.01 seconds)
