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:
Mar. 17, 2020
Filed:
Sep. 02, 2016
Applicant:
Statoil Petroleum As, Stavanger, NO;
Inventors:
Henrik Manum, Trondheim, NO;
Åsmund Hjulstad, Bru, NO;
Assignee:
EQUINOR ENERGY AS, Stavanger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/08 (2006.01); E21B 47/00 (2012.01); E21B 47/14 (2006.01);
U.S. Cl.
CPC ...
E21B 21/08 (2013.01); E21B 47/00 (2013.01); E21B 47/14 (2013.01);
Abstract
A method of obtaining an effective bulk modulus of a managed pressure drilling system is disclosed. The method includes generating a pressure wave in the managed pressure drilling system; measuring a time interval for the pressure wave to travel over a distance in the managed pressure drilling system; and calculating the effective bulk modulus of the managed pressure drilling system using the time interval and the distance.