Wells – Processes – With indicating – testing – measuring or locating
Patent
1993-07-09
1994-10-11
Schoeppel, Roger J.
Wells
Processes
With indicating, testing, measuring or locating
166 66, 166 64, 166254, 73154, 73155, E21B 4706, E21B 4710
Patent
active
053538730
ABSTRACT:
Apparatus and method for detecting flow outside Casing in a well are provided. The flow may be detected by logging tools or by fixed equipment inside casing. An alarm system is provided for lack of mechanical integrity of a wellbore. Stationary temperature sensors are placed in contact with the inside wall of the casing. Electronic circuits are used to provide output signals sensitive to differences in temperature of the sensors.
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