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.

Date of Patent:
Jun. 16, 2020

Filed:

Aug. 29, 2016
Applicant:

Schlumberger Technology Corporation, Sugar Land, TX (US);

Inventors:

Yawan Couturier, Katy, TX (US);

Paul Andrew Thow, Spring, TX (US);

Blaine Dow, Sugar Land, TX (US);

Jesse Alan Hardt, Houston, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 21/08 (2006.01); F04D 7/02 (2006.01); F04D 15/00 (2006.01); E21B 21/10 (2006.01); E21B 47/06 (2012.01); F04D 13/10 (2006.01); E21B 21/06 (2006.01); E21B 21/00 (2006.01);
U.S. Cl.
CPC ...
E21B 21/08 (2013.01); E21B 21/106 (2013.01); E21B 47/06 (2013.01); E21B 47/065 (2013.01); F04D 7/02 (2013.01); F04D 15/0022 (2013.01); E21B 21/065 (2013.01); E21B 2021/006 (2013.01); F04D 13/10 (2013.01);
Abstract

A system includes a mud pump for pumping a drilling mud from a drilling mud source, through a drill string, out a drill bit and into an annular, and a plurality of chokes disposed down stream from the mud pump, including a first choke disposed between the mud pump and the drill string, and a second choke disposed between the mud pump and a mud tank. The system further includes a fluid discharge conduit in fluid communication with the annular space for transferring the drilling mud to handling equipment in fluid communication with the mud tank. The first choke receives the drilling mud from the mud pump at a first flow rate, the first choke reduces drilling mud flow rate to a second flow rate less than the first flow rate, and the second choke reduces drilling mud flow rate to a third flow rate.


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