页岩气储层特征及含气性主控因素——以湘西北保靖地区龙马溪组为例

doi:10.3969/j.issn.1673-8926.2017.03.010

岩性油气藏 ›› 2017, Vol. 29 ›› Issue (3): 83–91.doi: 10.3969/j.issn.1673-8926.2017.03.010

页岩气储层特征及含气性主控因素——以湘西北保靖地区龙马溪组为例

胡博文¹, 李斌¹, 鲁东升¹, 罗群², 李建新¹, 王一霖¹

1. 神华地质勘查有限责任公司, 北京 102209;
2. 中国石油大学(北京) 非常规天然气研究院, 北京 102249

收稿日期:2016-09-10 修回日期:2016-10-25 出版日期:2017-05-21 发布日期:2017-05-21
通讯作者: 李斌(1970-),男,博士,高级工程师,主要从事油气地质研究工作。Email:libin9600@sohu.com。 E-mail:libin9600@sohu.com
作者简介:胡博文(1987-),男,硕士,工程师,主要从事页岩气地质研究工作。地址:(102209)北京市昌平区北七家镇未来科技城神华集团202号楼。Email:562077639@qq.com
基金资助:
国家自然科学基金项目“云质岩致密油储层微米-纳米孔喉网络体系及其流体耦合流动机理与流动下限”（编号：41372145）资助

Characteristics and main controlling factors of shale gas reservoirs: a case from Longmaxi Formation in Baojing area, NW Hunan province

HU Bowen¹, LI Bin¹, LU Dongsheng¹, LUO Qun², LI Jianxin¹, WANG Yilin¹

1. Shenhua Geological Exploration Co., Ltd., Beijing 102209, China;
2. The Unconventional Natural Gas Institute, China University of Petroleum(Beijing), Beijing 102249, China

Received:2016-09-10 Revised:2016-10-25 Online:2017-05-21 Published:2017-05-21

摘要/Abstract

摘要： 湘西北保靖地区龙马溪组富有机质泥页岩是重要的页岩气勘探层位。为研究其页岩气储层特征和气体赋存规律，利用矿物组分、有机地球化学、物性、含气性、等温吸附、扫描电镜和Nano-CT扫描等测试资料，并结合野外地质调查，分析和探讨了龙马溪组岩相特征、储层特征及储层含气性主控因素。结果表明：龙马溪组发育3种岩相，分别为炭质-粉砂质泥页岩相、炭质泥页岩相、含炭泥质粉砂岩相；储层孔隙类型主要包括粒间孔、溶蚀孔、晶间孔、化石孔、有机质孔和微裂缝，其中裂缝类型主要为构造缝和成岩缝；孔隙按孔径大小可分为微孔、介孔和宏孔，介孔占总孔容的比重最大，其次是微孔，宏孔最少。综合分析认为：微孔孔容、页岩比表面积与甲烷最大吸附量呈正相关性，受控于页岩有机质含量（TOC）；微裂缝与页岩含气量也呈正相关性，说明微裂缝的发育程度对页岩含气性具有影响作用。利用Nano-CT扫描结果，认为绝大部分气体流动空间位于有机质孔隙以及微裂缝中。TOC和微裂缝的发育程度是该区龙马溪组页岩气富集的主控因素。

关键词: 花岗岩油气藏, 成藏富集因素, 储层, 圈闭, 共生复合成藏

Abstract: The organic-rich shale of Longmaxi Formation is an important shale gas exploration horizon in Baojing area, NW Hunan Province. In order to study the characteristics of Longmaxi shale gas reservoir and gas occurrence rule, combined with field geologic investigation, the data of mineralogy, organic geochemistry, physical properties, gas-bearing property, isothermal adsorption, scanning electronic microscope and Nano-CT, were used to analyze the characteristics of lithofacies and reservoir and main controlling factors for the gas-bearing property of Longmaxi shale. The results show that three types of lithofacies are developed in the Longmaxi Formation,including carbon-silty shale, carbonaceous shale and carbon-argillaceous siltstone; the main pore types are intergranular pores, dissolved pores, intercrystalline pores, fossil pores, organic pores and micro-fractures. The main types of fractures are structural fractures and diagenetic fracture. According to the pore size, the reservoir pore can be divided into micropores, mesopores and macropores. Mesopores have the biggest contribution to the whole pore volume,followed by micropores, and the macropores have the minimum proportion in the whole pore volume. The analysis shows that the microporous volume and surface area of shale have a good positive correlation with the largest methane adsorption contents,which are both controlled by TOC content in shale. Microfractures have a good positive correlation with gas content,which indicates that the micro-fracture has an important influence on shale gas-bearing properties. The results of Nano-CT show that most of the gas flow spaces are organic pores and micro-fractures. The organic matter content and the development of micro-fractures are the main controlling factors for the enrichment of shale gas.

Key words: granite reservoir, accumulation and enrichment factors, reservoir, trap, symbiotic composite accumulation

中图分类号:

P624

胡博文, 李斌, 鲁东升, 罗群, 李建新, 王一霖. 页岩气储层特征及含气性主控因素——以湘西北保靖地区龙马溪组为例[J]. 岩性油气藏, 2017, 29(3): 83–91.

HU Bowen, LI Bin, LU Dongsheng, LUO Qun, LI Jianxin, WANG Yilin. Characteristics and main controlling factors of shale gas reservoirs: a case from Longmaxi Formation in Baojing area, NW Hunan province[J]. Lithologic Reservoirs, 2017, 29(3): 83–91.

参考文献

[1] 聂海宽, 张金川.页岩气储层类型和特征研究——以四川盆地及其周缘下古生界为例.石油实验地质, 2011, 33(3):219-225. NIE H K, ZHANG J C. Types and characteristics of shale gas reservoir:a case study of Lower Paleozoic in and around Sichuan Basin. Petroleum Geology & Experiment, 2011, 33(3):219-225.
[2] 杨超, 张金川, 唐玄.鄂尔多斯盆地陆相页岩微观孔隙类型及对页岩气渗储的影响.地学前缘, 2013, 20(4):240-250. YANG C, ZHANG J C, TANG X. Microscopic pore types and its impact on the storage and permeability of continental shale gas, Ordos Basin. Earth Science Frontiers, 2013, 20(4):240-250.
[3] 于炳松. 页岩气储层孔隙分类与表征. 地学前缘, 2013, 20(4):211-220. YU B S. Classification and characterization of gas shale pore system. Earth Science Frontiers, 2013, 20(4):211-220.
[4] 徐祖新, 韩淑敏, 王启超.中扬子地区陡山沱组页岩储层中黄铁矿特征及其油气意义.岩性油气藏, 2015, 27(2):31-37. XU Z X, HAN S M, WANG Q C. Characteristics of pyrite and its hydrocarbon significance of shale reservoir of Doushantuo Formation in middle Yangtze area. Lithologic Reservoirs, 2015, 27(2):31-37.
[5] 黄俨然, 杨荣丰, 肖正辉.湘西北下寒武统牛蹄塘组页岩含气性影响因素分析.岩性油气藏, 2015, 27(4):11-16. HUANG Y R, YANG R F, XIAO Z H. Influencing factors of shale gas-bearing property of Lower Cambrian Niutitang Formation in northwestern Hunan. Lithologic Reservoirs, 2015, 27(4):11-16.
[6] 周恳恳, 牟传龙, 梁薇, 等.湘西北龙山、永顺地区龙马溪组潮控三角洲沉积的发现——志留纪"雪峰隆起"形成的新证据. 沉积学报, 2014, 32(3):468-477. ZHOU K K, MOU C L, LIANG W, et al. Tide-dominated deltaic deposits in Lungamachi Formation, Longshan-Yongshun regions, northwestern Hunan:the initial sedimentary responses to outset of "Xuefeng uplift". Acta Sedimentologica Sinica, 2014, 32(3):468-477.
[7] 范二平, 唐书恒, 姜文, 等.湘西北下志留统龙马溪组页岩气成藏条件及勘探潜力分析. 西安石油大学学报(自然科学版), 2014, 29(4):18-23. FAN E P, TANG S H, JIANG W, et al. Accumulation conditions and exploration potential of shale has in Lower Silurian Longmaxi Formation,northwestern Hunan. Journal of Xi'an Shiyou University(Natural Science Edition), 2014, 29(4):18-23.
[8] 叶见玲, 李志能.湘西北下志留统龙马溪组页岩气成藏条件及有利区分析.中国煤炭地质, 2014, 26(6):10-14. YE J L, LI Z N. Lower Silurian Longmaxi Formation shale gas reservoiring condition and favorable area analysis in northwestern Hunan. Coal Geology of China, 2014, 26(6):10-14.
[9] 范二平, 唐书恒, 张成龙, 等.湘西北下古生界黑色页岩扫描电镜孔隙特征.古地理学报, 2014, 16(1):133-142. FAN E P, TANG S H, ZHANG C L, et al. Scanning-electronmicroscopic micropore characteristics of the Lower Paleozoic black shale in northwestern Hunan Province. Journal of Palaeogeography, 2014, 16(1):133-142.
[10] 张志平, 程礼军, 刘俊峰, 等.湖南保靖下志留统龙马溪组页岩气成藏地质条件评价.天然气勘探与开发, 2013, 36(3):4-6. ZHANG Z P, CHENG L J, LIU J F, et al. Reservoir-forming conditions of shale gas reservoir in Lower Silurian Longmaxi Formation, Baojing area, Hunan Province. Natural Gas Exploration and Development, 2013, 36(3):4-6.
[11] 袁照令, 李大明, 易顺华.对保靖-慈利逆冲断裂带的一些认识.地质与勘探, 2000, 36(5):59-61. YUAN Z L, LI D M, YI S H. The knowledge on Baojing-Cili overthrust fault belts. Geology and Prospecting, 2000, 36(5):59-61.
[12] 李斌, 胡博文, 石小虎, 等.湘西地区志留纪沉积体系及典型前陆盆地的形成模式研究.地学前缘, 2015, 22(6):167-176. LI B, HU B W, SHI X H, et al. Study on Silurian sedimentary system of western Hunan and the formation mode of typical foreland basin. Earth Science Frontiers, 2015, 22(6):167-176.
[13] 韩双彪, 张金川, 杨超, 等.渝东南下寒武页岩纳米级孔隙特征及其储气性能.煤炭学报, 2013, 38(6):1038-1043. HAN S B, ZHANG J C, YANG C, et al. The characteristics of nanoscale pore and its gas storage capability in the Lower Cambrian shale of southeast Chongqing. Journal of China Coal Society, 2013, 38(6):1038-1043.
[14] 杨巍, 陈国俊, 胡士骏, 等.川南-黔北地区下古生界页岩孔隙发育特征.岩性油气藏, 2015, 27(4):47-52. YANG W, CHEN G J, HU S J, et al. Pore characteristics of shale of Lower Paleozoic in southern Sichuan-northern Guizhou. Lithologic Reservoirs, 2015, 27(4):47-52.
[15] 纪文明, 宋岩, 姜振学, 等.四川盆地东南部龙马溪组页岩微-纳米孔隙结构特征及控制因素.石油学报,2016, 37(2):182-195. JI W M, SONG Y, JIANG Z X, et al. Micro-nano pore structure characteristics and its control factors of shale in Longmaxi Formation,southeastern Sichuan Basin. Acta Petrolei Sinica, 2016, 37(2):182-195.
[16] 魏祥峰, 刘若冰, 张廷山, 等.页岩气储层微观孔隙结构特征及发育控制因素——以川南-黔北XX地区龙马溪组为例. 天然气地球科学, 2013, 24(5):1048-1059. WEI X F, LIU R B, ZHANG T S, et al. Micro-pores structure characteristics and development control factors of shale gas reservoirs-a case of Longmaxi Formation in XX area of southern Sichuan and northern Guizhou. Natural Gas Geoscience, 2013, 24(5):1048-1059.
[17] 王亮, 陈云燕, 刘玉霞.川东南彭水地区龙马溪组页岩孔隙结构特征.中国石油勘探, 2014, 19(5):80-88. WANG L, CHEN Y Y, LIU Y X. Shale porous structural characteristics of Longmaxi Formation in Pengshui area of southeast Sichuan Basin. China Petroleum Exploration, 2014, 19(5):80-88.
[18] LOUCKS R G, REED R M, RUPPEL S C, et al. Spectrum of pore types and networks in mudrocks and a descriptive classification for matrix-related mudrock pores. AAPG Bulletin, 2012, 96(6):1071-1098.
[19] 崔景伟, 邹才能, 朱如凯, 等.页岩孔隙研究新进展.地球科学进展, 2012, 27(12):1319-1325. CUI J W, ZOU C N, ZHU R K, et al. New advances in shale porosity research. Advances in Earth Science, 2012, 27(12):1319-1325.
[20] 刘成林, 葛岩, 范柏江, 等.页岩气成藏模式研究.油气地质与采收率, 2010, 17(5):1-5. LIU C L, GE Y, FAN B J, et al. Study on shale gas accumulation mode. Petroleum Geology and Recovery Efficiency, 2010, 17(5):1-5.
[21] 关振良, 谢丛姣, 董虎, 等.多孔介质微观孔隙结构三维成像技术.地质科技情报, 2009, 28(2):115-121. GUAN Z L, XIE C J, DONG H, et al. 3D imaging and visualization technology of micro pore structure in porous media. Geological Science and Technology Information, 2009, 28(2):115-121.
[22] 郭雪晶, 何顺利, 陈胜, 等.基于纳米CT及数字岩心的页岩孔隙微观结构及分布特征研究. 中国煤炭地质, 2016, 28(2):28-34. GUO X J, HE S L, CHEN S, et al. Research on microstructure of shale pores and distribution features based on Nano-CT scanning and digital core analysis. Coal Geology of China, 2016, 28(2):28-34.
[23] 张盼盼, 刘小平, 王雅杰, 等.页岩纳米孔隙研究新进展.地球科学进展, 2014, 29(11):1242-1248. ZHANG P P, LIU X P, WANG Y J, et al. Research progress in shale nanopores. Advances in Earth Science, 2014, 29(11):1242-1248.
[24] 王社教, 王兰生, 黄金亮, 等.上扬子区志留系页岩气成藏条件.天然气工业, 2009, 29(5):45-50. WANG S J, WANG L S, HUANG J L, et al. Accumulation conditions of shale gas reservoirs in Silurian of the Upper Yangtze region. Natural Gas Industry, 2009, 29(5):45-50.
[25] 杨超, 张金川, 李婉君, 等.辽河坳陷沙三、沙四段泥页岩微观空隙特征及其成藏意义. 石油与天然气地质, 2014, 35(2):286-294. YANG C, ZHANG J C, LI W J, et al. Microscopic pore characteristics of Sha-3 and Sha-4 shale and their accumulation significance in Liaohe Depression. Oil & Gas Geology, 2014, 35(2):286-294.
[26] 久凯, 丁文龙, 李玉喜, 等.黔北地区构造特征与下寒武统页岩气储层裂缝研究.天然气地球科学, 2012, 23(4):797-803. JIU K, DING W L, LI Y X, et al. Structural features in northern Guizhou area and reservoir fracture of Lower Cambrian shale gas. Natural Gas Geoscience, 2012, 23(4):797-803.

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页岩气储层特征及含气性主控因素——以湘西北保靖地区龙马溪组为例

Characteristics and main controlling factors of shale gas reservoirs: a case from Longmaxi Formation in Baojing area, NW Hunan province

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