Use, Comparison, Presentation, And Interpretation Of Borehole Image And Acoustic Televiewer Technology

Borehole televiewers and image systems are used to accurately show sub surface<br>structural features. The borehole image system can show features not evident with the<br>acoustic televiewer under ideal conditions. Depending on the hole conditions, and the<br>data desired, either the image system or the televiewer may be the preferred instrument.<br>This paper will address:<br>1. General - The operation, calibration, survey setup, and complimentary logs to run<br>with each of these instrument types.<br>2. Comnarisons - The strengths, weaknesses, and similarities of the image system and<br>acoustic televiewer.<br>3. Data acauisition - Data gleaned from surveys can include: fractures and fracture<br>orientation; lithology and lithlogic changes; strike and dips; bedding planes, joint<br>sets, and foliation; compressional, extensional and horizontal stress determination;<br>information on how the borehole was drilled; and orientation of core. Interpretation<br>of this data will be discussed.<br>4. Presentation and annlication - Real examples will be used to show how a geoprofessional<br>would apply this data to varying situations. Data from a range of diverse<br>environments will be included, and various data formats will be presented.<br>Applications for when and type of surveys to run will be investigated.