摘要
水力压裂调研结果认为,地下岩体中所含随机分布孔隙能够影响水力压裂的造缝过程。将多孔岩石的孔隙简化成规则排列的球形孔洞,采用渐近均匀化方法建立了等效弹性常数随孔隙比变化的关系;与基于Budiansky自洽理论得到的有效弹性常数进行比较,两曲线能较好地吻合;为水力压裂法准确地预测出水力压裂的造缝结果提供了可行方案。
The investigations on hydraulic fracturing suggeste that the small openings distributed in the rock influence the process of fracturing. In this paper,the small openings of rock are treated as the regularly distributed holes,and the asymptotic homogenization method is employed to establish the relation between the equivalent elastic constants and porosity of the rock. The comparisons show that the equivalent elastic constants provided by this model are similar with the Budianskys,and can be applied to predict the result of hydraulic fracturing.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第7期1174-1178,共5页
Chinese Journal of Rock Mechanics and Engineering
基金
中国石油天然气总公司"九五"攻关资助项目。
关键词
岩石力学
水力压裂
多孔岩石
弹性常数
渐近均匀化法
rock mechanics,hydraulic fracturing,porous rock,elastic constants,asymptotic homogenization
