Composition and adsorptivity of shales in coal-bearing rock strata of Huainan coalfield

doi:10.7523/j.issn.2095-6134.2015.01.014

Abstract

Abstract:

Based on qualitative and quantitative analyses of organic and mineral in shales, the composition geological characteristics and adsorptivity of shales in coal-bearing strata were systematically studied in Huainan mining area. Results are given below, 1) TOC content of shale in study area varies between 0.13% and 8.58% with the average content of 1.98%; the organic matter type is mainly Ⅲ and a little Ⅱ_b; thermal maturity of organic matter ranges from 0.61% to 1.48% with the average of 0.93%; and mineral composition of shale mainly consists of clay minerals and quartz and kaolinite and mixed layer illite/smectite (I/S) are the staple clay types. 2) Adsorption capacity increases with TOC content, and the maximum adsorption amount per unit TOC increases with R_{o value; and the adsorptivity of clay mineral is associated with its type. 3) Brittle deformed shale and brittle-ductile deformed shale have different adsorption isotherm characteristics.}

Key words: coal-bearing strata, organic-bearing shale, shale gas, adsorptivity, Huainan coalfield

CLC Number:

R618.13

BU Hongling, JU Yiwen, WANG Guochang, FANG Lizhi, YAN Zhifeng, LI Qingguang. Composition and adsorptivity of shales in coal-bearing rock strata of Huainan coalfield[J]. , 2015, 32(1): 82-90.

References

[1] Peter S. BP Annual Report 2007[R]. London: BP, 2007.

[2] Watson J S. Chevron Annual Report 2007[R]. San Francisco: Chevron ,2007.

[3] Watson J S. Chevron Texaco Annual Report 2007[R].San Francisco: Chevron Texaco, 2007.

[4] 江怀友, 宋新民, 安晓璇, 等.世界页岩气资源与勘探开发技术综述[J].天然气技术, 2008, 2(6): 26-30.

[5] 张大伟,李玉喜,张金川,等.全国页岩气资源潜力调查评价[M].北京:地质出版社,2012:70-71.

[6] 张金川,徐波,聂海宽,等.中国页岩气资源勘探潜力[J].天然气工业, 2008, 28(6): 136-159.

[7] 谭明友,陶明信,贾红义,等.合肥盆地地质构造格架演化及油气条件分析[J].煤田地质与勘探,2003,31(4):1-5.

[8] 张新明,李建武,韩保山,等.淮南煤田煤层气藏划分及形成机制[J].科学通报,2005,50(增刊Ⅰ):6-13.

[9] 张国成,熊明富,郭卫星,等.淮南矿区南缘井田小构造对煤与瓦斯突出的控制作用[J]. 焦作工学院学报:自然科学版,2003(5):329-333.

[10] 武昱东. 两淮煤田构造-热演化特征及煤层气生成与富集规律[D].北京:中国科学院研究生院, 2010:58-64.

[11] 李玉喜,聂海宽,龙鹏宇.我国富含有机质泥页岩发育特点与页岩气战略选区[J].天然气工业, 2009,29(12):115-118.

[12] 王桂梁, 琚宜文, 郑孟林, 等. 中国北部能源盆地构造[M]. 徐州: 中国矿业大学出版社, 2007.

[13] Curtis J B. Fractured shale-gas systems [J]. AAPG Bulletin, 2002, 86(11): 1 921-1 938.

[14] 邹才能,董大忠,王社教,等.中国页岩气形成机理、地质特征及资源潜力[J].石油勘探与开发,2010,37(6):641-653.

[15] Ding W, Li C, Li C, et al. Fracture development in shale and its relationship to gas accumulation [J]. Geoscience Frontiers, 2012, 3(1): 97-105.

[16] Chalmers G R L, Bustin R M. Lower Cretaceous gas shales in northeastern British Columbia, Part I: Geological controls on methane sorption capacity [J]. Bulletin of Canadian petroleum geology, 2008, 56(1): 1-21.

[17] Chalmers G R L, Bustin R M. Lower Cretaceous gas shales in northeastern British Columbia, Part II: Evaluation of regional potential gas resources [J]. Bulletin of Canadian Petroleum Geology, 2008, 56(1): 22-61.

[18] 赵文智,邹才能,宋岩,等.石油地质理论与方法进展[M].北京:石油工业出版社,1996:132-134.

[19] Jarvie D M, Hill R J, Ruble T E, et al. Unconventional shale-gas systems: the Mississippian Barnett Shale of north-central Texas as one model for thermogenic shale-gas assessment [J]. AAPG bulletin, 2007, 91(4): 475-499.

[20] Tian H, Zhang S C, Liu S B, et al. Evolution of pores in organic-rich shales during thermal maturation [J]. AAPG Hedberg Conference, 2011:9-12.

[21] Ross D J K, Marc Bustin R. The importance of shale composition and pore structure upon gas storage potential of shale gas reservoirs [J]. Marine and Petroleum Geology, 2009, 26(6): 916-927.

[22] 降文萍,钟玲文,张群.淮南矿区南缘含煤岩系沉积环境分析及其对煤层气开发的意义[C]//中国地质学会、中国煤炭学会煤田地质专业委员会、中国煤炭工业劳动保护科学技术学会水害防治专业委员会学术年会,北京: ,2007:77-83.

[23] Wang F P, Reed R M, John A,et al. Pore networks and fluid flow in gas shales[C]//SPE Annual Technical Conference and Exhibition. New Orleans,Louisiana,2009.

[24] 李新景, 胡素云,程克明. 北美裂缝性页岩气勘探开发的启示[J]. 石油勘探与开发, 2007, 34(4): 392-400.

[25] 陈尚斌,朱炎铭,王红岩,等.四川盆地南缘下志留统龙马溪组页岩气储层矿物成分特征及意义[J].石油学报,2011,32(5):776-782.

[26] Behar F, Kressmann S, Rudkiewicz J L, et al. Experimental simulation in a confined system and kinetic modelling of kerogen and oil cracking[J]. Organic Geochemistry, 1992, 19(1): 173-189.

[27] Behar F, Vandenbroucke M. Chemical modelling of kerogens [J].Organic Geochemistry, 1987, 11(1): 15-24.

[28] Tissot B, Welte D H. Petroleum occurrence and formation [M]. New York: Springer-Verlag, Berlin, 1978:148.

[29] Cheng A L, Huang W L. Selective adsorption of hydrocarbon gases on clays and organic matter [J]. Organic geochemistry, 2004, 35(4): 413-423.

[30] Wang S B, Song Z G, Cao T T, et al. The methane sorption capacity of Paleozoic shales from the Sichuan Basin, China [J]. Marine and Petroleum Geology, 2013,44:112-119.

[31] Gasparik M, Bertier P, Gensterblum Y, et al. Geological controls on the methane storage capacity in organic-rich shales[J]. International Journal of Coal Geology, 2014, 123: 34-51.

[32] 琚宜文,姜波,王桂梁,等.构造煤结构及储层物性[M]. 徐州:中国矿业大学出版社, 2005:126-128.