干旱区生态环境知识资源中心(Arid): 渝东南下志留统龙马溪组页岩理化性能实验

Arid

	渝东南下志留统龙马溪组页岩理化性能实验
其他题名	Physical and chemical properties experiment on shale in Longmaxi Formation of Lower Silurian, southeast Chongqing
	王森 1; 刘洪 2; 陈乔 1; 王莉莎 1; 姚光华 2; 杜宏宇 2; 谭彦虎 1
来源期刊	石油学报
ISSN	0253-2697
出版年	2014
卷号	35 期号:2 页码:245-252
中文摘要	为了研究长水平井钻井中页岩储层井壁失稳的内在原因，采集渝东南下志留统龙马溪组露头页岩样品，进行了理化性能和页岩声波响应室内评价实验，并结合灰色关联度法分析了理化性能参数间的相关性。通过实验结果可以看出：①渝东南龙马溪组页岩孔隙度范围为1.5%?2.5%，平均值为1.9%，渗透率平均值为6， 72 *10～（-4)mD，岩样层理、微孔隙和微裂缝发育；②页岩主要矿物成分为石英、斜长石、黄铁矿和黏土，脆性矿物含量高，石英平均含量超过45%，黏土含量约为22%，并以伊利石为主，含少量的膨胀性黏土伊/蒙混层；③实验样品阳离子交换容量CEC值均小于10mmol/100g，平均值为8. 2 mmol/1.00 g，比表.面积的平均值为18. 39m~2/g,孔径分布平均值为3. 76 nm，比表面积和孔径呈现出负相关性；④随层理与岩心轴向夹角的变大，波速呈现出减小趋势；⑤比表面积和孔径与波速关联度较好，分别呈正、负线性相关。
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~(-4)mD. Bedding,micro-pore and micro-fracture of samples are developed; (2)The main shale mineral compositions are quartz, plagioclase, pyrite arid 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 m~2/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.
中文关键词	页岩超声波 ; 层理 ; 理化性能 ; 渝东南 ; 龙马溪组
英文关键词	shale ultrasonic bedding physical and chemical properties southeast Chongqing Longmaxi Formation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENERGY FUELS
WOS研究方向	Energy & Fuels
CSCD记录号	CSCD:5092049
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/231682
作者单位	1.中国科学院重庆绿色智能技术研究院, 重庆 401122, 中国; 2.重庆矿产资源开发有限公司, 重庆 401122, 中国
推荐引用方式 GB/T 7714	王森,刘洪,陈乔,等. 渝东南下志留统龙马溪组页岩理化性能实验[J],2014,35(2):245-252.
APA	王森.,刘洪.,陈乔.,王莉莎.,姚光华.,...&谭彦虎.(2014).渝东南下志留统龙马溪组页岩理化性能实验.石油学报,35(2),245-252.
MLA	王森,et al."渝东南下志留统龙马溪组页岩理化性能实验".石油学报 35.2(2014):245-252.