Active and passive acoustic imaging inside a large-scale polyaxial hydraulic fracture test

被引：0
|
作者：
Glaser, SD [1 ]
Dudley, JW [1 ]
Shlyapobersky, J [1 ]
机构：
[1] Univ Calif Berkeley, Dept Civil Engn, Berkeley, CA 94720 USA
来源：
NONDESTRUCTIVE AND AUTOMATED TESTING FOR SOIL AND ROCK PROPERTIES | 1999年 / 1350卷
关键词：
acoustic emission; acoustic imaging; hydraulic fracture; polyaxial testing; process zone; sensors;
D O I：
10.1520/STP13306S
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
An automated laboratory hydraulic fracture experiment has been assembled to determine what rock and treatment parameters are crucial to improving the efficiency and effectiveness of field hydraulic fractures. To this end a large (460 mm cubic sample) polyaxial cell, with servo-controlled X, Y, Z, pore pressure, crack-mouth-opening-displacement, and bottom hole pressure, was built. Active imaging with embedded seismic diffraction arrays images the geometry of the fracture. Preliminary tests indicate fracture extent can be imaged to within 5%. Unique embeddible high-fidelity particle velocity AE sensors were designed and calibrated to allow determination of fracture source kinematics.
引用
收藏
页码：14 / 28
页数：15
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