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US 12,146,374 B2Granted
Active intelligent wellbore pressure control system
AssigneeSouthwest Petroleum University
InventorsHongtao Li, Gao Li, Jun Jiang, Wenhe Xia, Xu Yang
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AssigneeSouthwest Petroleum University
InventorsHongtao Li, Gao Li, Jun Jiang, Wenhe Xia, Xu Yang
Estimating the term…
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.
An active intelligent wellbore pressure control system, comprising 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), wherein:
Dependencies are inferred from the claim text.