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:
May. 05, 2020

Filed:

Aug. 02, 2013
Applicant:

Conocophillips Company, Houston, TX (US);

Inventors:

Albert G. Holba, Houston, TX (US);

Russell L. Bone, Houston, TX (US);

Bradley J. Huizinga, Houston, TX (US);

James R. Vasquez, Houston, TX (US);

Sean M. Stokes, Houston, TX (US);

Assignee:

ConocoPhillips Company, Houston, TX (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 30/88 (2006.01); G01N 33/28 (2006.01); G01N 30/86 (2006.01);
U.S. Cl.
CPC ...
G01N 30/88 (2013.01); G01N 30/8682 (2013.01); G01N 33/2823 (2013.01); G01N 30/8651 (2013.01); G01N 2030/8854 (2013.01);
Abstract

This method allows for prediction of subsurface fluid properties (e.g., phase or API gravity) using gas chromatogram data of a small-volume extract. Small volume equates to microliter scale volume (or milligram scale weight) from a subsurface rock sample, where a fluid test may not be available for analysis. The method may also be applied to petroleum liquid samples where drilling fluid or other contaminants preclude accurate direct property measurement. Gas chromatographic data is calibrated to measured petroleum properties; preferably local oils from the same petroleum system, however, a general global calibration can also be used.


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