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. 29, 2004

Filed:

Mar. 27, 2000
Applicant:
Inventors:

Mark A. Proett, Missouri City, TX (US);

Michael T. Pelletier, Houston, TX (US);

Wei Han, Missouri City, TX (US);

Bruce H. Storm, Jr., Houston, TX (US);

Roger L. Schultz, Aubrey, TX (US);

Thomas E. Ritter, Katy, TX (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 1/104 ; E21B 4/710 ;
U.S. Cl.
CPC ...
G01N 1/104 ; E21B 4/710 ;
Abstract

A downhole tool and method for determining the viscosity of a reservoir fluid, the tool including a passage having entry, intermediate and exit regions, in which the reservoir fluid flowing through the passage will have a lower Reynolds number in the intermediate region as compared to the entry region, the tool also including differential pressure gauge for measuring the differential pressure across the intermediate region, and either a velocity controller or fluid velocity meter, for either setting or measuring the fluid velocity.


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