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:
Feb. 06, 2024
Filed:
Oct. 30, 2020
Enhanced Drilling As, Straume, NO;
Per Christian Stenshorne, Oslo, NO;
David Edward Smith, Katy, TX (US);
Gustav Olov Skärgård, Oslo, NO;
Enhanced Drilling AS, Straume, NO;
Abstract
The present invention relates to a riser system in the form of a pumped riser (), i.e. a riser () having an outlet () from the riser () at a depth below the surface (S) of a body of water, where the outlet () is coupled to a return pump () to return fluid from the riser () to the surface (S), and various operational methods to facilitate greater versatility when performing hydrocarbon drilling related operations. The arrangement also comprises a sealing element () to seal an annulus () of the riser (), and a by-pass () around the sealing element (). Various methods makes it possible to switch between open mode and closed mode, and vice versa, monitoring leakage across the sealing element (), as well as performing other operations exploiting the advantages of the two different modes.