Volumetric imaging of aperture distributions in connected fracture networks

被引：78

作者：

PyrakNolte, LJ ^{[1
]}

Montemagno, CD ^{[1
]}

Nolte, DD ^{[1
]}

机构：

[1] CORNELL UNIV,DEPT AGR BIOENGN,ITHACA,NY 14853

来源：

GEOPHYSICAL RESEARCH LETTERS | 1997年 / 24卷 / 18期

关键词：

D O I：

10.1029/97GL02057

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We use x-ray computerized tomographic (CT) imaging to present quantitative aperture data for three-dimensional interconnected fracture networks imbedded in intact opaque rock samples several centimeters in length. Xray images are obtained by injecting a high-density liquid metal into the fractured rock specimen under lithostatic conditions. The combination of tomographic reconstruction with gravimetric analysis makes it possible for the first time to obtain effective fracture aperture sizes to an accuracy of only several microns, located spatially within 300 microns. The apertures in the fracture network are spatially correlated over distances of 10 mm to 30 mm. The apertures of the intersections of the fractures were not found to be statistically larger in size than for the complete fracture network.

引用

页码：2343 / 2346

页数：4

共 22 条

[1]

[Anonymous], P 32 US S ROCK MECH

[2] X-RAY TOMOGRAPHY STUDIES OF WELLBORE PROCESSES UNDER IN-SITU STRESS CONDITIONS [J].