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. 13, 2018
Filed:
Jun. 19, 2013
Applicant:
National Oilwell Varco Norway As, Kristiansand S, NO;
Inventors:
Age Kyllingstad, Ålgård, NO;
Arne Austefjord, Sandnes, NO;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 49/08 (2006.01); E21B 49/00 (2006.01); E21B 21/08 (2006.01); F04B 51/00 (2006.01); G01N 33/28 (2006.01);
U.S. Cl.
CPC ...
E21B 49/005 (2013.01); E21B 21/08 (2013.01); E21B 49/00 (2013.01); F04B 51/00 (2013.01); G01N 33/2823 (2013.01); E21B 2049/085 (2013.01);
Abstract
Apparatus and method for measuring the compressibility (K) of a fluid circulated by a positive displacement pump that comprises: a pressure sensor for sensing a pressure P of a fluid confined in a fluid module of the pump; a position sensor for sensing the position X, of a piston in the fluid module and a control unit communicating with the pressure sensor and the position sensor adapted to: log the pressure (P) and piston position (X) substantially synchronously; using (X), calculate the volume (V) of the confined fluid in the fluid module; and using (P) and (V), calculate the compressibility (K).