Adsorbability of shale in coal measures and its influencing factors

Authors

ZHANG Baoxin, Key Laboratory of Coalbed Methane Resources and Accumulation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, China
FU Xuehai, Key Laboratory of Coalbed Methane Resources and Accumulation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, China
ZHANG Qinghui, Shanxi Coal Geological Exploration Institute, Taiyuan 030031, China
ZHOU Baoyan, Shanxi Coal Geological Exploration Institute, Taiyuan 030031, China
LIU Zheng, Shanxi Coal Geological Exploration Institute, Taiyuan 030031, China

Abstract

In order to reveal the adsorption and gas-bearing characteristics of shale in coal measures, this study was based on the gas content, isotherm adsorption, high-pressure mercury injection, and liquid nitrogen adsorption of more than 200 coal shale in six major coal fields in Shanxi Province and Junggar basin. XRD diffraction and other measured data, the adsorption and gas characteristics of shale were analyzed, and the influencing factors were discussed. The results show that the measured gas content of shale is between 0-5.87 cm³/g, concentrated at 0.90-2.00 cm³/g; V_L is between 0.11-6.3 cm³/g with an average of 1.57 cm³/g. The adsorption capacity of shale gas was strong; p_L ranged from 0.16 to 8.65 MPa with an average of 3.28 MPa; the maximum adsorption capacity was positively correlated with porosity, organic matter abundance, organic matter maturity, and quality score of clay mineral. The relationship is negatively correlated with the quality score of illite-montmorillonite mixed layer and the average pore size.

Keywords

shale gas, coal measures, adsorbability, gas-bearing property, influencing factors

DOI

10.3969/j.issn.1001-1986.2019.01.008

Recommended Citation

ZHANG Baoxin, FU Xuehai, ZHANG Qinghui, et al. (2019) "Adsorbability of shale in coal measures and its influencing factors," Coal Geology & Exploration: Vol. 47: Iss. 1, Article 9.
DOI: 10.3969/j.issn.1001-1986.2019.01.008
Available at: https://cge.researchcommons.org/journal/vol47/iss1/9

Reference

[1] 张秋生. 低-中阶煤及煤系泥页岩吸附性及其影响因素[D]. 徐州:中国矿业大学,2016.

[2] 张培河,刘云亮,贾立龙. 鄂尔多斯盆地东部上古生界煤系页岩气藏特征及勘探方向[J]. 煤田地质与勘探,2016,44(4):54-58. ZHANG Peihe,LIU Yunliang,JIA Lilong. Shale gas reservoir characteristics of the Upper Paleozoic coal measures and exploration direction in eastern Ordos basin[J]. Coal Geology & Exploration,2016,44(4):54-58.

[3] 顾志翔,彭勇民,何幼斌,等. 湘中坳陷二叠系海陆过渡相页岩气地质条件[J]. 中国地质,2015,42(1):288-299. GU Zhixiang,PENG Yongmin,HE Youbin,et al. Geological conditions of Permian sea-land transitional facies shale gas in the Xiangzhong depression[J]. Chinese Geology,2015,42(1):288-299.

[4] 曹代勇,王崇敬,李靖,等. 煤系页岩气的基本特点与聚集规律[J]. 煤田地质与勘探,2014,42(4):25-30. CAO Daiyong,WANG Chongjing,LI Jing,et al. Basic characteristics and accumulation rules of shale gas in coal measures[J]. Coal Geology & Exploration,2014,42(4):25-30.

[5] 傅雪海,德勒恰提·加娜塔依,朱炎铭,等. 煤系非常规天然气资源特征及分隔合采技术[J]. 地学前缘,2016,23(3):36-40. FU Xuehai,DELCHATI Ganatayi,ZHU Yanming,et al. Resources characteristics and separated reservoirs drainage of unconventional gas in coal measures[J]. Earth Science Frontiers, 2016,23(3):36-40.

[6] 陈晶,黄文辉,陈燕萍,等. 沁水盆地煤系地层页岩储层评价及其影响因素[J]. 煤炭学报,2017,42(增刊1):215-224. CHEN Jing,HUANG Wenhui,CHEN Yanping,et al. Evaluation of shale reservoirs in coal-bearing strata of Qinshui basin and its influencing factors[J]. Journal of China Coal Society,2017, (S1):215-224.

[7] 杨承伟,李靖,王安民,等. 木里煤田煤系泥页岩储层特征研究[J]. 中国煤炭地质,2017,29(4):23-30. YANG Chengwei,LI Jing,WANG Anmin,et al. Coal measures argillutite reservoir features in Muri coalfield[J]. China Coal Geology,2017,29(4):23-30.

[8] 卜红玲,琚宜文,王国昌,等. 淮南煤田煤系泥页岩组成特征及吸附性能[J]. 中国科学院大学学报,2015,32(1):82-90. BU Hongling,JU Yiwen,WANG Guochang,et al. Composition and adsorptivity of shales in coal-bearing rock strata of Huainan coalfield[J]. Journal of the University of Chinese Academy of Sciences,2015,32(1):82-90.

[9] 彭超,潘结南,万小强,等. 禹州煤田煤系泥页岩黏土矿物对孔隙结构和甲烷吸附性能的影响[J]. 中国煤炭,2017,43(6):46-52. PENG Chao,PAN Jienan,WAN Xiaoqiang,et al. Effect of clay minerals of coal-bearing shale on pore structure and methane adsorption property in Yuzhou coalfield[J]. China Coal,2017, 43(6):46-52.

[10] 李贵红. 筠连煤田晚二叠世煤系页岩储层初步评价[J]. 煤炭科学技术,2015,43(10):127-132. LI Guihong. Preliminary assessment for shale reservoir of Late Permian coal measures in Junlian coalfield[J]. Coal Science and Technology,2015,43(10):127-132.

[11] 孙彩蓉,唐书恒,魏建光. 中国南方海相页岩气与华北煤系页岩气储层特征差异分析[J]. 中国矿业,2017,26(3):166-170. SUN Cairong,TANG Shuheng,WEI Jianguang. The differences of reservoir features between southern marine shale gas and northern coal-bearing shale gas in China[J]. China Mining Magazine,2017,26(3):166-170.

[12] SING K S W. Reporting physisorption data for gas/solid systems with special reference to the determination of surface area and porosity(Recommendations 1984)[J]. Pure and Applied Chemistry,1985,57(4):603-619.

[13] Liu Y,Zhu Y M. Comparison of pore characteristics in the coal and shale reservoirs of Taiyuan Formation,Qinshui basin, China[J]. International Journal of Coal Science & Technology, 2016,3(3):330-338.

[14] 陈尚斌,朱炎铭,王红岩,等. 川南龙马溪组页岩气储层纳米孔隙结构特征及其成藏意义[J]. 煤炭学报,2012,37(3):438-444. CHEN Shangbin,ZHU Yanming,WANG Hongyan,et al. Structure characteristics and accumulation significance of nanopores in Longmaxi shale gas reservoir in the southern Sichuan basin[J]. Journal of China Coal Society,2012,37(3):438-444.

[15] 钟太贤. 中国南方海相页岩孔隙结构特征[J].天然气工业, 2012,32(9):1-4. ZHONG Taixian. Characteristics of pore structure of marine shales in south China[J]. Natural Gas Industry,2012,32(9):1-4.

[16] 高为,易同生. 黔西松河井田煤储层孔隙特征及对渗透性的影响[J]. 煤炭科学技术,2016,44(2):55-61. GAO Wei,YI Tongsheng. Pore features of coal reservoir in Songhe mine field of west Guizhou and its impact to permeability[J]. Coal Science and Technology,2016,44(2):55-61.

[17] 张吉振,李贤庆,王元,等. 海陆过渡相煤系页岩气成藏条件及储层特征:以四川盆地南部龙潭组为例[J]. 煤炭学报, 2015,40(8):1871-1878. ZHANG Jizhen,LI Xianqing,WANG Yuan,et al. Accumulation conditions and reservoir characteristics of marine-terrigenous facies coal measures shale gas from Longtan Formation in south Sichuan basin[J]. Journal of China Coal Society,2015,40(8):1871-1878.

[18] 董谦,刘小平,李武广,等. 关于页岩含气量确定方法的探讨[J]. 天然气与石油,2012,30(5):34-37. DONG Qian,LIU Xiaoping,LI Wuguang,et al. Discussion on the determination method of shale gas content[J]. Natural Gas and Oil,2012,30(5):34-37.

[19] 毕赫,姜振学,李鹏,等. 渝东南地区龙马溪组页岩吸附特征及其影响因素[J].天然气地球科学, 2014, 25(2):302-310. BI He,JIANG Zhenxue,LI Peng,et al. Adsorption characteristic and influence factors of Longmaxi shale in southeastern Chongqing[J]. Natural Gas Geoscience,2014,25(2):302-310.

[20] 房立志,琚宜文,王国昌,等. 华夏陆块闽西南坳陷二叠系含有机质页岩组成及赋气孔隙特征[J]. 地学前缘,2013,20(4):229-239. FANG Lizhi,JU Yiwen,WANG Guochang,et al. Composition and gas-filled pore characteristics of Permian organic shale in southwest Fujian depression,Cathaysia landmass[J]. Earth Science Frontiers,2013,20(4):229-239.

[21] GUO S,LYU X X,SONG X,et al. Methane adsorption characteristics and influence factors of Mesozoic shales in the Kuqa depression, Tarim basin, China[J]. Journal of Petroleum Science and Engineering,2017(157):187-195.

[22] 任泽樱,刘洛夫,高小跃,等. 库车坳陷东北部侏罗系泥页岩吸附能力及影响因素分析[J]. 天然气地球科学,2014,25(4):632-640. REN Zeying,LIU Luofu,GAO Xiaoyue,et al. Adsorption capacity and its influence factors of the Jurassic shale in the northeastern Kuqa depression[J]. Natural Gas Geoscience,2014, 25(4):632-640.

[23] 张雪芬,陆现彩,张林晔,等. 页岩气的赋存形式研究及其石油地质意义[J]. 地球科学进展,2010,25(6):597-604. ZHANG Xuefen,LU Xiancai,ZHANG Linye,et al. Occurrences of shale gas and their petroleum geological significance[J]. Advance in Earth Sciences, 2010, 25(6):597-604.

[24] 宋叙,王思波,曹涛涛,等. 扬子地台寒武系泥页岩甲烷吸附特征[J]. 地质学报,2013,87(7):1041-1048. SONG Xu,WANG Sibo,CAO Taotao,et al. The methane adsorption features of Cambrian shales in the Yangtze platform[J]. Acta Geologica Sinica,2013,87(7):1041-1048.

[25] 高凤琳,宋岩,姜振学,等. 黏土矿物对页岩储集空间及吸附能力的影响[J]. 特种油气藏,2017,24(3):1-8. GAO Fenglin,SONG Yan,JIANG Zhenxue,et al. Influence of clay minerals on shale storage space and adsorptive capacity[J]. Special Oil & Gas Reservoirs,2017,24(3):1-8.

[26] 李全中,蔡永乐,胡海洋. 泥页岩中黏土矿物纳米孔隙结构特征及其对甲烷吸附的影响[J]. 煤炭学报,2017,42(9):2414-2419. LI Quanzhong,CAI Yongle,HU Haiyang. Characteristics of nano-pore structure of clay minerals in shale and its effects on methane adsorption capacity[J]. Journal of China Coal Society, 2017,42(9):2414-2419.

[27] 唐书恒,范二平. 富有机质页岩中主要黏土矿物吸附甲烷特性[J]. 煤炭学报,2014,39(8):1700-1706. TANG Shuheng,FAN Erping. Methane adsorption characteristics of clay minerals in organic-rich shales[J]. Journal of China Coal Society,2014,39(8):1700-1706.