期刊
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
卷 36, 期 -, 页码 79-86出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2016.10.015
关键词
Tensile failure; Lamination; Natural fracture; Brazilian test
资金
- Unconventional Natural Gas and Oil Institute (UNGI) Coupled Integrated Multiscale Measurements and Modeling (CIMMM) consortium at Colorado School of Mines
Natural fractures and laminations are common features in many unconventional resources which require hydraulic fracturing for economic production. To better understand the effect of such features on rock failure, we have conducted indirect tensile or Brazilian testing on several rock samples from Green River and Niobrara formations. Brazilian experiments were conducted at various orientations of laminations or natural fractures with respect to the loading direction. In contrast to isotropic rocks, we observed that rock failure can occur away from the vertical central line of rock parallel to lamination or natural fracture when the approaching angle between the lamination and loading direction is less than 30 in the tested samples. It was also determined that the tensile strength parallel to laminations or calcite-filled fractures is lower than the tensile strength perpendicular to lamination and/or the natural fractures; for instance the tensile strength of Niobara calcite-filled fractures were almost one third of the rock matrix. Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据