Downhole fluid spectroscopy

Details Downhole fluid spectroscopy Downhole fluid spectroscopy

Filed on

2009-05-07

Date issued

2011-10-18

Examiner

Kim, Kiho (Department: 2884)

Patent Class

Radiant energy

SubClass

Geological testing or irradiation

SubSubClass

Well testing apparatus and methods

Type

Reexamination Certificate

Status

active

Patent number

08039791

Description

ABSTRACT:
An example method for determining a partial density of a compound in a downhole fluid may comprise exposing the downhole fluid to an electromagnetic radiation, and measuring a spectrum of radiation absorption by the downhole fluid. An absorption peak of the compound may be identified in the measured spectrum. A first parameter indicative of radiation absorption by the downhole fluid may be determined in the identified absorption peak. Second and third parameters indicative of radiation absorptions by the downhole fluid may be determined essentially out of the identified absorption peak. A weighted combination of the second and third parameters may be computed, and the partial density of the compound may be determined from a difference between the weighted combination and the first parameter.

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US 7,456,958, 11/2008, DiFoggio (withdrawn)
Bykov, A.D. et al., The Infrared Spectrum of H2S from 1 to 5 um, Can. J. Phys., vol. 72, p. 989 (1994).

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