Physical and chemical properties experiment on shale in Longmaxi Formation of Lower Silurian, southeast Chongqing

doi:10.7623/syxb201402004

	Physical and chemical properties experiment on shale in Longmaxi Formation of Lower Silurian, southeast Chongqing
	Wang, Sen 1; Liu, Hong 1; Chen, Qiao 1; Wang, Lisha 1; Yao, Guanghua 2; Du, Hongyu 2; Tan, Yanhu 1
刊名	Shiyou Xuebao/Acta Petrolei Sinica
	2014
卷号	35 期号:2 页码:245-252
ISSN号	02532697
DOI	10.7623/syxb201402004
通讯作者	Chen, Q. (chenqiao@cigit.ac.cn)
英文摘要	To analysis internal causes of shale reservoir wellbore instability in long horizontal well drilling, based on outcrops shale in Longmaxi Formation of Lower Silurian, Chongqing southeast, physical and chemical properties experiments, and acoustic response tests have been carried out. Associating with gray correlation analysis, the correlations between the physical and chemical performance parameters are analysed. Experiments show that: (1) Shale porosity of Longmaxi Formation is in range of 1.5%-2.5%, an average of 1.9%. Average permeability is 6.72×10-4mD. Bedding, micro-pore and micro-fracture of samples are developed; (2) The main shale mineral compositions are quartz, plagioclase, pyrite and clay. Average silica content exceeds 45%, and clay content is about 22%, mainly illite, containing a small amount of swelling clay of illite/mectite; (3) Cation exchange capacity (CEC) values are less than 10 mmol/100 g, average is 8.2 mmol/100 g. Average specific surface area is 18.39 m2/g, and average pore size distribution is 3.76 nm, the two shows negative correlated behavior; (4) As angle between with bedding and core axial is increasing, ultrasonic velocity has decreased trend; (5) Specific surface area and pore size have good correlation with velocity, respectively as positive and negative linear correlation.
语种	中文
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/4579]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 401122, China; 2.Chongqing Mineral Resources Development Corporation, Ltd., Chongqing 401122, China
推荐引用方式 GB/T 7714	Wang, Sen,Liu, Hong,Chen, Qiao,et al. Physical and chemical properties experiment on shale in Longmaxi Formation of Lower Silurian, southeast Chongqing[J]. Shiyou Xuebao/Acta Petrolei Sinica,2014,35(2):245-252.
APA	Wang, Sen.,Liu, Hong.,Chen, Qiao.,Wang, Lisha.,Yao, Guanghua.,...&Tan, Yanhu.(2014).Physical and chemical properties experiment on shale in Longmaxi Formation of Lower Silurian, southeast Chongqing.Shiyou Xuebao/Acta Petrolei Sinica,35(2),245-252.
MLA	Wang, Sen,et al."Physical and chemical properties experiment on shale in Longmaxi Formation of Lower Silurian, southeast Chongqing".Shiyou Xuebao/Acta Petrolei Sinica 35.2(2014):245-252.