The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 19, 2024
Filed:
Jan. 25, 2023
Southwest Petroleum University, Chengdu, CN;
Hongtao Li, Chengdu, CN;
Gao Li, Chengdu, CN;
Jun Jiang, Chengdu, CN;
Wenhe Xia, Chengdu, CN;
Xu Yang, Chengdu, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
The present invention discloses an active intelligent wellbore pressure control system, which includes a ground multi-parameter online monitoring system (), a rotary blowout preventer (), a wellhead back pressure compensation manifold, an automatic plugging material filling device (), a drilling device, an MPD intelligent control system (), a remote monitoring and control system (), and a high-precision hydraulic calculation 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, 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.