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:
Dec. 02, 2014

Filed:

Mar. 04, 2011
Applicants:

Roger Marsh, Palmyra, AU;

David M. Chace, Houston, TX (US);

Rafay Z. Ansari, Houston, TX (US);

Feyzi Inanc, Spring, TX (US);

Inventors:

Roger Marsh, Palmyra, AU;

David M. Chace, Houston, TX (US);

Rafay Z. Ansari, Houston, TX (US);

Feyzi Inanc, Spring, TX (US);

Assignee:

Baker Hughes Incorporated, Houston, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 5/04 (2006.01); G01V 5/10 (2006.01); G01V 5/06 (2006.01);
U.S. Cl.
CPC ...
G01V 5/104 (2013.01); G01V 5/107 (2013.01); G01V 5/06 (2013.01);
Abstract

A method of estimating fluid composition in an earth formation includes: generating at least one pulsed neutron measurement by a pulsed neutron tool; estimating a pulsed neutron fluid saturation by analyzing the at least one pulsed neutron measurement via a pulsed neutron model of the earth formation, the pulsed neutron model including expected pulsed neutron measurements relative to selected fluid composition and properties; comparing the pulsed neutron fluid saturation to a reference fluid saturation estimated via a downhole tool; adjusting the pulsed neutron model to at least substantially eliminate a difference between the pulsed neutron fluid saturation and the reference fluid saturation by adjusting at least one of the selected fluid composition and the selected fluid properties; and estimating at least one of the fluid composition and the fluid properties based on the adjusted model.


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