DETERMINATION OF IN-SITU FRACTURE-TOUGHNESS

被引：11
|
作者：
ZHAO, XL
ROEGIERS, JC
机构：
[1] School of Petroleum and Geological Engineering, The University of Oklahoma, Norman
来源：
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES & GEOMECHANICS ABSTRACTS | 1993年 / 30卷 / 07期
关键词：
D O I：
10.1016/0148-9062(93)90032-9
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Theoretical analyses of closing pressure on the process zone give an "actual" fracture toughness value under confining pressure or in-situ measurements. This value is compatible with the fracture toughness measured under laboratory bench conditions, evidencing the authors' assumption that the increase of "apparent" fracture toughness is due to the confining pressure acting on the reduced process zone. © 1993.
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页码：837 / 840
页数：4
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