Development and Field Testing of the High-Temperature Borehole Televiewer
- Key words
- Drilling; Well Logging; High Temperature; Equipment; Borehole Televiewer
- Location
- Salton Sea, California; Imperial Valley
- Conference
- Geothermal Resources Council Transactions
- Year
- 1990
- Session
- Equipment design; High temperature reservoirs; Televiewers;
- Language
- English
Abstract
The High Temperature Borehole Televiewer is a downhole instrument which provides acoustic pictures of the borehole walls that are suitable for casing inspection and fracture detection in geothermal wells. The Geothermal Drilling Organization has funded the development of a commercial tool survivable to temperatures up to 275°C and pressure of 5000 psi. A real time display of an IBM compatible PC was included as part of the developmental effort. This paper describes the three principal components of this televiewer system. The three components are: the mechanical section, the electronics, and the computer software and hardware. Each of these three component are described with special attention to important design changes most pertinent to a high temperature environment. The results of two field tests of the televiewer system are also described.
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