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EFFECTS OF LITHOLOGY ON TELEVIEWER-LOG QUALITY AND FRACTURE INTERPRETATION.

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Abstract

Representative televiewer logs illustrating natural fractures in such common rock types as granite, gabbro, basalt, schist, sandstone, limestone and shale are presented in addition to photographs of the same fractures in core samples. These examples demonstrate the many difficulties in recognizing fractures on televiewer logs compared to fractures in logs because of the vertical scale distortion on televiewer logs and from drilling damage to the fractures at the borehole wall. All of these results demonstrate that significant fracture widening usually occurs during drilling, explaining why fractures described by the core logger as closed can be consistently detected on televiewer logs.

Suggested Citation

Paillet, F.L., Keys, W., Hess, A., 1985, EFFECTS OF LITHOLOGY ON TELEVIEWER-LOG QUALITY AND FRACTURE INTERPRETATION., in Transactions of the SPWLA Annual Logging Symposium (Society of Professional Well Log Analysts), v. 2, Dallas, TX, USA.

Publication type Conference Paper
Publication Subtype Conference Paper
Title EFFECTS OF LITHOLOGY ON TELEVIEWER-LOG QUALITY AND FRACTURE INTERPRETATION.
Volume 2
Year Published 1985
Language English
Publisher Soc of Professional Well Log Analysts
Publisher location Houston, TX, USA
Larger Work Title Transactions of the SPWLA Annual Logging Symposium (Society of Professional Well Log Analysts)
Conference Title Transactions of the SPWLA Twenty-Sixth Annual Logging Symposium.
Conference Location Dallas, TX, USA
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