岩性油气藏 ›› 2020, Vol. 32 ›› Issue (5): 4653.doi: 10.12108/yxyqc.20200505
王朋飞1,2, 金璨3, 臧小鹏1, 田黔宁1, 刘国1, 崔文娟1
WANG Pengfei1,2, JIN Can3, ZANG Xiaopeng1, TIAN Qianning1, LIU Guo1, CUI Wenjuan1
摘要: 页岩气在储层内的有效赋存及渗流由有机质孔隙决定。由此,以渝东南地区下志留统龙马溪组和下寒武统牛蹄塘组高—过成熟度典型富有机质黑色海相页岩为研究对象,使用电子显微镜观察2套页岩层位的有机质孔隙结构。结果表明:龙马溪组页岩有机质孔隙主要发育在焦沥青内部,而固体干酪根内仅发育少量直径较小的有机质孔隙;牛蹄塘组页岩的焦沥青和固体干酪根均不发育有机质孔隙;2套页岩的总有机碳含量、全岩矿物组成及干酪根类型均具有相似特征,但牛蹄塘组页岩的热成熟度要远高于龙马溪组页岩,且已达到变质期,其固体干酪根和焦沥青的物理化学性质均趋近于石墨,导致其有机质内部不发育孔隙。过高的热成熟度不利于页岩中有机质孔隙的保存,所以渝东南地区下寒武统牛蹄塘组高—过成熟度海相页岩气的勘探开发应重点寻找热成熟度低于3.5%的地区。
中图分类号:
[1] MILLIKEN K L, RUDNICKI M, AWWILLER D N, et al. Organic matter-hosted pore system,Marcellus Formation(Devonian), Pennsylvania. AAPG Bulletin, 2013, 97(2):177-200. [2] 张廷山, 何映颉, 杨洋, 等.有机质纳米孔隙吸附页岩气的分子模拟.天然气地球科学, 2017, 28(1):146-155. ZHANG T S, HE Y J, YANG Y, et al. Characteristics and mechanisms of the micro-holes in the Early Palaeozoic marine shale, southern Sichuan Basin. Acta Geologica Sinica, 2017, 28(1):146-155. [3] JIAO K, YAO S P, LIU C, et al. The characterization and quantitative analysis of nanopores in unconventional gas reservoirs utilizing FESEM-FIB and image processing:an example from the Lower Silurian Longmaxi shale, upper Yangtze region, China. International Journal of Coal Geology, 2014, 128:1-11. [4] JI W M, SONG Y, RUI Z H, et al. Pore characterization of isolated organic matter from high matured gas shale reservoir. International Journal of Coal Geology, 2017, 174:31-40. [5] WANG P F, JIANG Z X, JI W M, et al. Heterogeneity of intergranular,intraparticle and organic pores in Longmaxi shale in Sichuan Basin, South China:Evidence from SEM digital images and fractal and multifractal geometries. Marine and Petroleum Geology, 2016, 72:122-138. [6] MA Y, ZHONG N N, LI D H, et al. Organic matter/clay mineral intergranular pores in the Lower Cambrian Lujiaping Shale in the north-eastern part of the upper Yangtze area, China:a possible microscopic mechanism for gas preservation. International Journal of Coal Geology, 2015, 137:38-54. [7] 王香增, 张丽霞, 雷裕红, 等.低熟湖相页岩内运移固体有机质和有机质孔特征:以鄂尔多斯盆地东南部延长组长7油层组页岩为例.石油学报, 2018, 39(2):141-151. WANG X Z, ZHANG L X, LEI Y H, et al. Characteristics of migrated solid organic matters and organic pores in low maturity lacustrine shale:a case study of the shale in Chang 7 oil-bearing formation of Yanchang Formation, southeastern Ordos Basin. Acta Petrolei Sinica, 2018, 39(2):141-151. [8] 王玉满, 李新景, 陈波, 等.海相页岩有机质炭化的热成熟度下限及勘探风险.石油勘探与开发, 2018, 45(3):385-395. WANG Y M, LI X J, CHEN B, et al. Lower limit of thermal maturity for the carbonification of organic matters in marine shales and its exploration risk. Petroleum Exploration and Development, 2018, 45(3):385-395. [9] 刘忠宝, 冯动军, 高波, 等.上扬子地区下寒武统高演化页岩微观孔隙特征.天然气地球科学, 2017, 28(7):1096-1107. LIU Z B, FENG D J, GAO B, et al. Micropore characteristics of high thermal evolution shale in the Lower Cambrian series in Upper Yangtze area. Natural Gas Geoscience, 2017, 28(7):1096-1107. [10] 郭旭升, 胡东风, 魏志红, 等.涪陵页岩气田的发现与勘探认识.中国石油勘探, 2016, 21(3):24-37. GUO X S, HU D F, WEI Z H, et al. Discovery and exploration of Fuling shale gas field. China Petroleum Exploration, 2016, 21(3):24-37. [11] 赵建华, 金之钧, 金振奎, 等.岩石学方法区分页岩中有机质类型.石油实验地质, 2016, 38(4):514-520. ZHAO J H, JIN Z J, JIN Z K, et al. Petrographic methods to distinguish organic matter type in shale. Petroleum Geology & Experiment, 2016, 38(4):514-520. [12] LOUCKS R G, REED R M. Scanning-electron-microscope petrographic evidence for distinguishing organic-matter pores associated with depositional organic matter versus migrated organic matter in mudrocks. Gulf Coast Association of Geological Societies Journal, 2014, 3:51-60. [13] 陈相霖, 郭天旭, 石砥石, 等.陕南地区牛蹄塘组页岩孔隙结构特征及吸附能力.岩性油气藏, 2019, 31(5):52-60. CHEN X L, GUO T X, SHI D S, et al. Pore structure characteristics and adsorption capacity of Niutitang Formation shale in southern Shaanxi. Lithologic Reservoirs, 2019, 31(5):52-60. [14] 拜文华, 王强, 孙莎莎, 等.五峰组-龙马溪组页岩地化特征及沉积环境:以四川盆地西南缘为例. 中国矿业大学学报, 2019, 48(6):1276-1289. BAI W H, WANG Q, SUN S S, et al. Geochemical characteristics and sedimentary environment of the Wufeng-Longmaxi shales:a case study from southwestern margin of the Sichuan Basin. Journal of China University of Mining & Technology, 2019, 48(6):1276-1289. [15] 丁江辉, 张金川, 杨超, 等.页岩有机孔成因演化及影响因素探讨.西南石油大学学报(自然科学版), 2019, 41(2):33-44. DING J H, ZHANG J C, YANG C, et al. Formation evolution and influencing factors of organic pores in shale. Journal of Southwest Petroleum University(Science & Technology Edition), 2019, 41(2):33-44. [16] 张焱林, 段轲, 刘早学, 等.鄂西下寒武统牛蹄塘组页岩特征及页岩气富集主控因素.石油实验地质, 2019, 41(5):691-698. ZHANG Y L, DUAN K, LIU Z X, et al. Characteristics of shale and main controlling factors of shale gas enrichment of Lower Cambrian Niutitang Formation in western Hubei. Petroleum Geology & Experiment, 2019, 41(5):691-698. [17] 张建坤, 何生, 颜新林, 等.页岩纳米级孔隙结构特征及热成熟演化.中国石油大学学报(自然科学版), 2017, 41(1):11-24. ZHANG J K, HE S, YAN X L, et al. Structural characteristics and thermal evolution of nanoporosity in shales. Journal of China University of Petroleum(Edition of Natural Science), 2017, 41(1):11-24. [18] 王朋飞, 姜振学, 杨彩虹, 等.重庆周缘龙马溪组和牛蹄塘组页岩有机质孔隙发育特征.岩性油气藏, 2019, 31(3):27-36. WANG P F, JIANG Z X, YANG C H, et al. Organic pore development characteristics of Longmaxi and Niutitang shales in the periphery of Chongqing. Lithologic Reservoirs, 2019, 31(3):27-36. [19] 王朋飞, 姜振学, 韩波, 等.中国南方下寒武统牛蹄塘组页岩气高效勘探开发储层地质参数.石油学报, 2018, 39(2):152-162. WANG P F, JIANG Z X, HAN B, et al. Reservoir geological parameters for efficient exploration and development of Lower Cambrian Niutitang Formation shale gas in South China. Acta Petrolei Sinica, 2018, 39(2):152-162. [20] 马勇, 钟宁宁, 程礼军, 等.渝东南两套富有机质页岩的孔隙结构特征:来自FIB-SEM的新启示. 石油实验地质, 2015, 37(1):109-116. MA Y, ZHONG N N, CHENG L J, et al. Pore structure of two organic-rich shales in southeastern Chongqing area:Insight from focused ion beam scanning electron microscope(FIB-SEM). Petroleum Geology & Experiment, 2015, 37(1):109-116. [21] 王朋飞, 吕鹏, 姜振学, 等.中国海陆相页岩有机质孔隙发育特征对比:基于聚焦离子束氦离子显微镜(FIB-HIM)技术. 石油实验地质, 2018, 40(5):739-748. WANG P F, LYU P, JIANG Z X, et al. Comparison of organic matter pores of marine and continental facies shale in China:based on focused ion beam helium ion microscopy(FIB-HIM). Petroleum Geology & Experiment, 2018, 40(5):739-748. |
[1] | 尹兴平, 蒋裕强, 付永红, 张雪梅, 雷治安, 陈超, 张海杰. 渝西地区五峰组—龙马溪组龙一1亚段页岩岩相及储层特征[J]. 岩性油气藏, 2021, 33(4): 41-51. |
[2] | 杨洋, 石万忠, 张晓明, 王任, 徐笑丰, 刘俞佐, 白卢恒, 曹沈厅, 冯芊. 页岩岩相的测井曲线识别方法——以焦石坝地区五峰组-龙马溪组为例[J]. 岩性油气藏, 2021, 33(2): 135-146. |
[3] | 陈相霖, 郭天旭, 石砥石, 侯啓东, 王超. 陕南地区牛蹄塘组页岩孔隙结构特征及吸附能力[J]. 岩性油气藏, 2019, 31(5): 52-60. |
[4] | 叶亚培, 唐书恒, 郗兆栋, 张耀选. 黔北地区牛蹄塘组页岩矿物组成特征与脆性评价[J]. 岩性油气藏, 2019, 31(4): 62-71. |
[5] | 高乔, 王兴志, 朱逸青, 赵圣贤, 张芮, 肖哲宇. 川南地区龙马溪组元素地球化学特征及有机质富集主控因素[J]. 岩性油气藏, 2019, 31(4): 72-84. |
[6] | 李贤胜, 刘向君, 熊健, 李玮, 梁利喜. 层理对页岩纵波特性的影响[J]. 岩性油气藏, 2019, 31(3): 152-160. |
[7] | 王朋飞, 姜振学, 杨彩虹, 金璨, 吕鹏, 王海华. 重庆周缘龙马溪组和牛蹄塘组页岩有机质孔隙发育特征[J]. 岩性油气藏, 2019, 31(3): 27-36. |
[8] | 郑珊珊, 刘洛夫, 汪洋, 罗泽华, 王曦蒙, 盛悦, 许同, 王柏寒. 川南地区五峰组—龙马溪组页岩微观孔隙结构特征及主控因素[J]. 岩性油气藏, 2019, 31(3): 55-65. |
[9] | 何贵松, 何希鹏, 高玉巧, 张培先, 万静雅, 黄小贞. 中国南方3套海相页岩气成藏条件分析[J]. 岩性油气藏, 2019, 31(1): 57-68. |
[10] | 余川, 周洵, 方光建, 汪生秀, 余忠樯. 地层温压条件下页岩吸附性能变化特征——以渝东北地区龙马溪组为例[J]. 岩性油气藏, 2018, 30(6): 10-17. |
[11] | 沈瑞, 胡志明, 郭和坤, 姜柏材, 苗盛, 李武广. 四川盆地长宁龙马溪组页岩赋存空间及含气规律[J]. 岩性油气藏, 2018, 30(5): 11-17. |
[12] | 曹涛涛, 邓模, 刘虎, 宋之光, 曹清古, 黄俨然. 可溶有机质对泥页岩储集物性的影响[J]. 岩性油气藏, 2018, 30(3): 43-51. |
[13] | 朱汉卿, 贾爱林, 位云生, 贾成业, 金亦秋, 袁贺. 基于氩气吸附的页岩纳米级孔隙结构特征[J]. 岩性油气藏, 2018, 30(2): 77-84. |
[14] | 陈居凯, 朱炎铭, 崔兆帮, 张闯辉. 川南龙马溪组页岩孔隙结构综合表征及其分形特征[J]. 岩性油气藏, 2018, 30(1): 55-62. |
[15] | 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. |
|