Fluid level indication system and technique

Thermal measuring and testing – Temperature measurement – Geophysical

Reexamination Certificate

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C374S137000, C374S131000

Reexamination Certificate

active

07731421

ABSTRACT:
A technique that is usable with a well includes changing the temperature of a local environment of a distributed temperature sensor, which is deployed in a region of the well and using the sensor to acquire measurements of a temperature versus depth profile. The region contains at least two different well fluid layers, and the technique includes determining the depth of a boundary of at least one of the well fluid layers based at least in part on a response of the temperature versus depth profile to the changing of the temperature.

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