New method to differentiate between matrix and micro-fractures using diffusion data in gas shale

CORC > 力学研究所 > 中国科学院力学研究所 > 流固耦合系统力学重点实验室(2012-)

	New method to differentiate between matrix and micro-fractures using diffusion data in gas shale
	Yang L(杨柳)1; Shi X 2; Zhang KH 2; Ge HK 2; Gao J 3; Tan XQ 3; Xu P 3; Li LD 3
	2017
会议日期	June 25, 2017 - June 28, 2017
会议地点	San Francisco, CA, United states
关键词	Diffusion in liquids Fracture Ions Matrix algebra Rock mechanics Shale Shale gas Diffusion experiments Diffusion rate Fracture matrix Fracturing operations Ion diffusion rate Low probability Mineral composition Reservoir characteristic
页码	2035-2039
英文摘要	The fact that salt ions in shale pores diffuse into fracturing fluids is key factor to lead to recovered water with high salinity. In this paper, the authors conduct the test of mineral composition and SEM to understand the reservoir characteristics. The diffusion experiments are conducted on crushed samples, and a new method is proposed to differentiate between matrix and microfractures by using diffusion data. A large amount of salt ions exit in shale pores and can diffuse into fracturing fluids after fracturing operations. To a great extent, ion diffusion rate is determined by the development of microfractures. The crushed samples with smaller grain diameter contain have lower diffusion rate due to the low probability of microfractures development. When the grain diameter is lower than critical value, the crushed samples cannot contain microfractures. As for Longmaxi formation sample, the fracture-matrix boundary is about 80mesh.The research contributes to understanding the reservoir characteristics and salinity profiles of gas shale. © 2017 ARMA, American Rock Mechanics Association.
会议录	51st US Rock Mechanics / Geomechanics Symposium 2017
语种	英语
ISBN号	9781510857582
内容类型	会议论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78010]
专题	力学研究所_流固耦合系统力学重点实验室(2012-)
作者单位	1.Institute of Mechanics, Chinese Academy of Sciences, Beijing, China; 2.China University of Petroleum (East China), Qingdao, Shandong, China; 3.Research Institute of Petroleum Exploration and Development, Beijing, China
推荐引用方式 GB/T 7714	Yang L,Shi X,Zhang KH,et al. New method to differentiate between matrix and micro-fractures using diffusion data in gas shale[C]. 见:. San Francisco, CA, United states. June 25, 2017 - June 28, 2017.