岩性油气藏 ›› 2022, Vol. 34 ›› Issue (4): 89102.doi: 10.12108/yxyqc.20220409
张记刚1, 杜猛2,3,4, 陈超1, 秦明1, 贾宁洪3,4, 吕伟峰3,4, 丁振华1, 向勇2
ZHANG Jigang1, DU Meng2,3,4, CHEN Chao1, QIN Ming1, JIA Ninghong3,4, LYU Weifeng3,4, DING Zhenhua1, XIANG Yong2
摘要: 吉木萨尔凹陷二叠系芦草沟组是重要的页岩油气聚集区。通过铸体薄片、压汞及核磁共振等分析,结合医用CT、微米CT扫描技术、扫描电镜矿物定量评价(QEMSCAN)及Avizo可视化软件先进的数学算法,构建了吉木萨尔凹陷芦草沟组页岩储层的三维数字岩心并提取了孔隙网络模型参数,获取全尺度孔径分布曲线,从多个维度综合开展其微观孔隙结构定量表征研究。研究结果表明:①研究区芦草沟组页岩储层的孔隙度平均为7.6%,渗透率平均为0.37 mD,为“低孔-特低渗”型致密页岩储层,其主要储集空间类型为次生溶蚀孔,含残余粒间孔、生物体腔孔和成岩微裂缝。②孔喉尺度为纳米—微米级不等,以0.12~1.75 μm喉道贡献率最高,亚微米—微米级孔喉对渗流的贡献较大,孔隙展布形态多为孤立状和条带状,孔隙半径大多为4.5~12.5 μm;喉道半径大多为1.3~5.1 μm,喉道长度为5~15 μm;孔喉配位数为1~2,孔隙结构具有非均质性强、连通性差等特点,孔喉连通性比孔隙尺度对渗流的贡献更大。③纳米尺度下,基质矿物主要为石英和钠长石,纳米级微孔大多分布于矿物颗粒(晶体)内部有机质孔及胶结物微孔隙,孔径为0.015~5.000 μm。
中图分类号:
[1] 张廷山, 彭志, 杨巍, 等. 美国页岩油研究对我国的启示[J]. 岩性油气藏, 2015, 27(3):1-10. ZHANG Tingshan, PENG Zhi, YANG Wei, et al. Enlightenment of shale oil research in the United States to China[J]. Lithologic Reservoirs, 2015, 27(3):1-10. [2] 许琳, 常秋生, 杨成克, 等. 吉木萨尔凹陷二叠系芦草沟组页岩油储层特征及含油性[J]. 石油与天然气地质, 2019, 40(3):535-549. XU Lin, CHANG Qiusheng, YANG Chengke, et al. Shale oil reservoir characteristics and oil bearing property of Permian Lucaogou Formation in Jimusar Sag[J]. Oil & Gas Geology, 2019, 40(3):535-549. [3] 何登发, 陈新发, 况军, 等. 准噶尔盆地石炭系油气成藏组合特征及勘探前景[J]. 石油学报, 2010, 31(1):1-11. HE Dengfa, CHEN Xinfa, KUANG Jun, et al. Characteristics and exploration prospects of hydrocarbon accumulation in Carboniferous in Junggar Basin[J]. Acta Petrolei Sinica, 2010, 31(1):1-11. [4] 刘一杉, 东晓虎, 闫林, 等. 吉木萨尔凹陷芦草沟组孔隙结构定量表征[J]. 新疆石油地质, 2019, 40(3):284-289. LIU Yishan, DONG Xiaohu, YAN Lin, et al. Quantitative characterization of pore structure of Lucaogou Formation in Jimsar Sag[J]. Xingjiang Petroleum Geology, 2019, 40(3):284-289. [5] 李国欣, 覃建华, 鲜成钢, 等. 致密砾岩油田高效开发理论认识、关键技术与实践:以准噶尔盆地玛湖油田为例[J]. 石油勘探与开发, 2020, 47(6):1-13. LI Guoxin, QIN Jianhua, XIAN Chenggang, et al. Theoretical understandings, key technologies and practices of tight conglomerate oilfield efficient development:A case study of the Mahu Oilfield, Junggar Basin, NW China[J]. Petroleum Exploration and Development, 2020, 47(6):1-13. [6] 吉鸿杰, 邱振, 陶辉飞, 等. 烃源岩特征与生烃动力学研究:以准噶尔盆地吉木萨尔凹陷芦草沟组为例[J]. 岩性油气藏, 2014, 28(4):34-42. JI Hongjie, QIU Zhen, TAO Huifei, et al. Characteristics of source rocks and hydrocarbon generation dynamics:A case study of Lucaogou Formation in Jimsar Sag, Junggar Basin[J]. Lithologic Reservoirs, 2014, 28(4):34-42. [7] 冷振鹏, 杨胜建, 吕伟峰, 等. 致密油孔隙结构表征方法:以川中致密油储层岩心为例[J]. 断块油气田, 2016, 23(2):161-165. LENG Zhenpeng, YANG Shengjian, LYU Weifeng, et al. Pore structure characterization for tight oil reservoirs:Taking Chuanzhong tight oil reservoir cores as examples[J]. Fault-Block Oil & Gas Field, 2016, 23(2):161-165. [8] 贾承造, 邹才能, 杨智, 等. 陆相油气地质理论在中国中西部盆地的重大进展[J]. 石油勘探与开发, 2018, 45(4):546-560. JIA Chengzao, ZOU Caineng, YANG Zhi, et al. Significant progress of continental petroleum geology theory in basins of central and western China[J]. Petroleum Exploration and Development, 2018, 45(4):546-560. [9] YANG Liu, ZHANG Xuhui, ZHOU Tong, et al. The effects of ion diffusion on imbibition oil recovery in salt-rich shale oil reservoirs[J]. Journal of Geophysics and Engineering, 2019, 16(3):525-540. [10] 林森虎, 邹才能, 袁选俊, 等. 美国致密油开发现状及启示[J]. 岩性油气藏, 2011, 23(4):25-30. LIN Senhu, ZOU Caineng, YUAN Xuanjun, et al. Current situation and enlightenment of tight oil development in the United States[J]. Lithologic Reservoirs, 2011, 23(4):25-30. [11] 黄建波, 张奎, 谢斌, 等. 准噶尔盆地玛湖凹陷百口泉组低渗透率砾岩储层分类[J]. 测井技术, 2020, 44(3):305-311. HUANG Jianbo, ZHANG Kui, XIE Bin, et al. Classification and log evaluation to low permeability conglomerate reservior of Baikouquan Formation in Mahu Depression Junggar Basin[J]. Well Logging Technology, 2020, 44(3):305-311. [12] 刘向君, 熊健, 梁利喜, 等. 基于微CT技术的致密砂岩孔隙结构特征及其对流体流动的影响[J]. 地球物理学进展, 2017, 32(3):1019-1028. LIU Xiangjun, XIONG Jian, LIANG Lixi, et al. Study on the characteristics of pore structure of tight sand based on microCT scanning and its influence on fluid flow[J]. Progress in Geophysics, 2017, 32(3):1019-1028. [13] 贾宁洪, 吕伟峰, 常天全, 等. 高效无损岩心孔隙度精确测量新方法[J]. 石油学报, 2018, 39(7):824-828. JIA Ninghong, LYU Weifeng, CHANG Tianquan, et al. A new method for precisely measuring core porosity with high efficiency and no destruction[J]. Acta Petrolei Sinica, 2018, 39(7):824-828. [14] BERA B, MITRA S K, VICK D. Understanding the micro structure of Berea Sandstone by the simultaneous use of micro-computed tomography(micro-CT)and focused ion beam-scanning electron microscopy(FIB-SEM)[J]. Micron, 2010, 42(5):412-418. [15] GOLAB A, WARD C R, PERMANA A, et al. High-resolution three-dimensional imaging of coal using microfocus X-ray computed tomography, with special reference to modes of mineral occurrence[J]. International Journal of Coal Geology, 2013, 113:97-108. [16] 王朋飞, 姜振学, 李卓, 等. 渝东北下寒武统牛蹄塘组页岩微纳米孔隙结构特征[J]. 地球科学, 2017, 42(7):1147-1156. WANG Pengfei, JIANG Zhenxue, LI Zhuo, et al. Micro-nanopore structure characteristics in the Lower Cambrian Niutitang shale, Northest Chongqing[J]. Earth Science, 2017, 42(7):1147-1156. [17] LYU Weifeng, CHEN Shiyu, GAO Yang, et al. Evaluating seepage radius of tight oil reservoir using digital core modeling approach[J]. Journal of Petroleum Science and Engineering, 2019, 178:609-615. [18] 陈怡婷, 刘洛夫, 王梦尧, 等. 鄂尔多斯盆地西南部长6、长7储集层特征及其控制因素[J]. 岩性油气藏, 2020, 32(1):51-65. CHEN Yiting, LIU Luofu, WANG Mengyao, et al. Characteristics and controlling factors of Chang 6 and Chang 7 reservoirs in southwestern Ordos Basin[J]. Lithologic Reservoirs, 2020, 32(1):51-65. [19] 马铨峥, 杨胜来, 杨龙, 等. 准噶尔盆地吉木萨尔凹陷芦草沟组致密储层微观孔隙特征[J]. 大庆石油地质与开发, 2020, 52(1):36-42. MA Quanzheng, YANG Shenglai, YANG Long, et al. Micro pore characteristics of Lucaogou Formation tight reservoir in Jimusaer Sag,Junggar Basin[J]. Petroleum Geology & Oilfield Development in Daqing, 2020, 52(1):36-42. [20] CURTIS M E, SONDERGELD C H, AMBROSE R J, et al. Microstructural investigation of gas shales in two and three dimensions using nanometer-scale resolution imaging[J]. AAPG Bulletin, 2012, 96(4):665-677. [21] 张文文, 韩长城, 田继军, 等. 吉木萨尔凹陷二叠系芦草沟组层序地层划分及演化特征[J]. 岩性油气藏, 2021, 33(5):45-58. ZHANG Wenwen, HAN Changcheng, TIAN Jijun, et al. Sequence stratigraphy division and evolutionary features of Permian Lucaogou Formation in Jimsar Sag[J]. Lithologic Reservoirs, 2021, 33(5):45-58. [22] 白斌, 朱如凯, 吴松涛, 等. 利用多尺度CT成像表征致密砂岩微观孔喉结构[J]. 石油勘探与开发, 2013, 40(3):329-333. BAI Bin, ZHU Rukai, WU Songtao, et al. Multi-scale method of nano(micro)- CT study on microscopic pore structure of tight sandstone of Yanchang Formation, Ordos Basin[J]. Petroleum Exploration and Development, 2013, 40(3):329-333. [23] 王刚, 沈俊男, 储翔宇, 等. 基于CT三维重建的高阶煤孔裂隙结构综合表征和分析[J]. 煤炭学报, 2017, 42(8):2074-2080. WANG Gang, SHEN Junnan, CHU Xiangyu, et al. Characterization and analysis of pores and fissures of high-rank coal based on CT three-dimensional reconstruction[J]. Journal of China Coal Society, 2017, 42(8):2074-2080. [24] 刘向君, 朱洪林, 梁利喜. 基于微CT技术的砂岩数字岩石物理实验[J]. 地球物理学报, 2014, 57(4):1133-1140. LIU Xiangjun, ZHU Honglin, LIANG Lixi. Digital rock physics of sandstone based on micro-CT technology[J]. Chinese Journal of Geophysics, 2014, 57(4):1133-1140. [25] 郝乐伟, 王琪, 唐俊. 储层岩石微观孔隙结构研究方法与理论综述[J]. 岩性油气藏, 2013, 25(5):123-128. HAO Lewei, WANG Qi,TANG Jun. Research progress of reservoir microscopic pore structure[J]. Lithologic Reservoirs, 2013, 25(5):123-128. [26] 李佳琦, 陈蓓蓓, 孔明炜, 等. 页岩油储集层数字岩心重构及微尺度下渗流特征:以吉木萨尔凹陷二叠系芦草沟组页岩油为例[J]. 新疆石油地质, 2019, 40(3):319-327. LI Jiaqi, CHEN Beibei, KONG Mingwei, et al. Digital core reconstruction and research on microscale flow characteristics of shale oilreservoir:A case of the shale oil in Permian Lucaogou Formation, Jimsar Sag[J]. Xingjiang Petroleum Geology, 2019, 40(3):319-327. [27] PENG Jun, HAN Haodong, XIA Qingsong, et al. Fractal characteristic of microscopic pore structure of tight sandstone reservoirs in Kalpintag Formation in Shuntuoguole area, Tarim Basin[J]. Petroleum Research, 2020, 5(1):1-17. [28] 杨甫, 贺丹, 马东民, 等. 低阶煤储层微观孔隙结构多尺度联合表征[J]. 岩性油气藏, 2020, 32(3):14-23. YANG Fu, HE Dan, MA Dongmin, et al. Multi-scale joint characterization of micro-pore structure of low-rank coal reservoir[J]. Lithologic Reservoirs, 2020, 32(3):14-23. |
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