Single point and fiber optic temperature measurement for...

Details Single point and fiber optic temperature measurement for... Single point and fiber optic temperature measurement for...

2008-04-22

2008-04-22

Williams, Hezron (Department: 2856)

Measuring and testing

Borehole or drilling

Pressure measurement

C073S152520

Reexamination Certificate

active

07360412

ABSTRACT:
Fluid column weight correction using discrete point and fiber optic temperature measurement. A method for determining pressure at a distal end of a fluid column in a well includes the steps of: dividing the fluid column into multiple segments; determining a temperature of each segment; and determining a pressure and density for each segment. Another method includes the steps of: determining the temperature of each segment by measuring a temperature in the well near a proximal end of the fluid column, and using the measured temperature in conjunction with a thermal wellbore model to generate a temperature profile of the fluid column. Another method includes the steps of: causing a pressure change in the fluid column; recording multiple pressure measurements during the pressure change; and generating a temperature profile of the fluid column for each of the pressure measurements.

REFERENCES:
patent: 4823166 (1989-04-01), Hartog et al.
patent: 4976142 (1990-12-01), Perales
patent: 5163321 (1992-11-01), Perales
patent: 6176323 (2001-01-01), Weirich et al.
patent: 6206108 (2001-03-01), MacDonald et al.
patent: WO 01/01092 (2001-01-01), None

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