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DIGITAL CORE TECHNOLOGY-BASED MICROSTRUCTURE CHARACTERISTICS AND MAIN CONTROLLING FACTORS OF CONTINENTAL SHALE OIL: A Case Study of Shale in Cretaceous Qingshankou Formation in Songliao Basin |
DONG Hu1, YANG Jian-guo2, WU Guo-qiang1, MA Ke1, LI Xiang1 |
1. iRock Technologies Co., Ltd., Beijing 100094, China; 2. Shenyang Center of China Geological Survey, Shenyang 110034, China |
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Abstract Digital core technology, with reliable fundamental data for the evaluation of shale oil in the first member of Qingshankou Formation in Qijia-Gulong Sag, northern Songliao Basin, supports the breakthrough of shale oil exploration in Songliao continental basin. According to the physical properties of ultra-low porosity and ultra-low permeability of shale reservoir, the digital core experiments of micro-nano CT, MAPS and QEMSCAN are used comprehensively to study the lithological characteristics, lithofacies type and pore structure of shale reservoir. The first member of Qingshankou Formation is divided into 5 lithofacies types, including low-TOC lamellar clayey limestone, low-TOC lamellar felsic limestone, medium-TOC lamellar felsic shale, medium-TOC interbedded siltstone and high-TOC lamellar siliceous shale facies. The main pore types are intergranular pore, intragranular pore and organic matter pore. Lithofacies is the main controlling factor for the development of pores and bedding fractures. The reservoir space of high-TOC lamellar siliceous shale facies is mainly composed of intragranular pores and bedding fractures, which is the sweet spot for development of shale oil in the first member of Qingshankou Formation.
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Received: 12 April 2021
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[1] |
赵文智, 胡素云, 侯连华. 页岩油地下原位转化的内涵与战略地位[J]. 石油勘探与开发, 2018, 45(4):537-545. Zhao W Z, Hu S Y, Hou L H. Connotation and strategic role of in-situ conversion processing of shale oil underground in the onshore China[J]. Petroleum Exploration and Development, 2018, 45(4):537-545.
|
[2] |
邹才能, 朱如凯, 白斌, 等. 致密油与页岩油内涵、特征、潜力及挑战[J]. 矿物岩石地球化学通报, 2015, 34(1):1-17. Zou C N, Zhu R K, Bai B, et al. Significance, geologic characteristics, resource potential and future challenges of tight oil and shale oil[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 2015, 34(1):1-17.
|
[3] |
柳波, 孙嘉慧, 张永清, 等. 松辽盆地长岭凹陷白垩系青山口组一段页岩油储集空间类型与富集模式[J]. 石油勘探与开发, 2021, 48(3):521-535. Liu B, Sun J H, Zhang Y Q, et al. Reservoir space and enrichment model of shale oil in the first member of Cretaceous Qingshankou Formation in the Changling sag, southern Songliao Basin, NE China[J]. Petroleum Exploration and Development, 2021, 48(3):521-535.
|
[4] |
吴河勇, 林铁锋, 白云风, 等. 松辽盆地北部泥(页)岩油勘探潜力分析[J]. 大庆石油地质与开发, 2019, 38(5):78-86. Wu H Y, Lin T F, Bai Y F, et al. Analyses of the mudstone (shale) oil exploration potential in North Songliao Basin[J]. Petroleum Geology & Oilfield Development in Daqing, 2019, 38(5):78-86.
|
[5] |
聂海宽, 张培先, 边瑞康, 等. 中国陆相页岩油富集特征[J]. 地学前缘, 2016, 23(2):55-62. Nie H K, Zhang P X, Bian R K, et al. Oil accumulation characteristics of China continental shale[J]. Earth Science Frontiers, 2016, 23(2):55-62.
|
[6] |
柳波, 吕延防, 冉清昌, 等. 松辽盆地北部青山口组页岩油形成地质条件及勘探潜力[J]. 石油与天然气地质, 2014, 35(2):280-285. Liu B, Lü Y F, Ran Q C, et al. Geological conditions and exploration potential of shale oil in Qingshankou Formation, northern Songliao Basin[J]. Oil & Gas Geology, 2014, 35(2):280-285.
|
[7] |
杜金虎, 胡素云, 庞正炼, 等. 中国陆相页岩油类型、潜力及前景[J]. 中国石油勘探, 2019, 24(5):560-568. Du J H, Hu S Y, Pang Z L, et al. The types, potentials and prospects of continental shale oil in China[J]. China Petroleum Exploration, 2019, 24(5):560-568.
|
[8] |
邹才能, 朱如凯, 白斌, 等. 中国油气储层中纳米孔首次发现及其科学价值[J]. 岩石学报, 2011, 27(6):1857-1864. Zou C N, Zhu R K, Bai B, et al. First discovery of nano-pore throat in oil and gas reservoir in China and its scientific value[J]. Acta Petrologica Sinica, 2011, 27(6):1857-1864.
|
[9] |
杨华, 李士祥, 刘显阳. 鄂尔多斯盆地致密油、页岩油特征及资源潜力[J]. 石油学报, 2013, 34(1):1-11. Yang H, Li S X, Liu X Y. Characteristics and resource prospects of tight oil and shale oil in Ordos Basin[J]. Acta Petrolei Sinica, 2013, 34(1):1-11.
|
[10] |
韩辉, 钟宁宁, 焦淑静, 等. 泥页岩孔隙的扫描电子显微镜观察[J]. 电子显微学报, 2013, 32(4):325-330. Han H, Zhong N N, Jiao S J, et al. Scanning electron microscope observation of pores in mudstone and shale[J]. Journal of Chinese Electron Microscopy Society, 2013, 32(4):325-330.
|
[11] |
查明, 尹向烟, 姜林, 等. CT扫描技术在石油勘探开发中的应用[J]. 地质科技情报, 2017, 36(4):228-235. Zha M, Yin X Y, Jiang L, et al. Application of CT technology in petroleum exploration and development[J]. Geological Science and Technology Information, 2017, 36(4):228-235.
|
[12] |
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 B, Zhu R K, Wu S T, 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.
|
[13] |
姚宜同, 李士祥, 赵彦德, 等. 鄂尔多斯盆地新安边地区长7致密油特征及控制因素[J]. 沉积学报, 2015, 33(3):625-632. Yao Y T, Li S X, Zhao Y D, et al. Characteristics & controlling factors of Chang 7 tight oil in Xin'anbian area, Ordos Basin[J]. Acta Sedimentologica Sinica, 2015, 33(3):625-632.
|
[14] |
冯子辉, 方伟, 李振广, 等. 松辽盆地陆相大规模优质烃源岩沉积环境的地球化学标志[J]. 中国科学:地球科学, 2011, 41(9):1253-1267. Feng Z H, Fang W, Li Z G, et al. Depositional environment of terrestrial petroleum source rocks and geochemical indicators in the Songliao Basin[J]. Science China Earth Sciences, 2011, 54(9):1304-1317.
|
[15] |
朱如凯, 金旭, 王晓琦, 等. 复杂储层多尺度数字岩石评价[J]. 地球科学, 2018, 43(5):1773-1782. Zhu R K, Jin X, Wang X Q, et al. Multi-scale digital rock evaluation on complex reservoir[J]. Earth Science, 2018, 43(5):1773-1782.
|
[16] |
柳波, 石佳欣, 付晓飞, 等. 陆相泥页岩层系岩相特征与页岩油富集条件:以松辽盆地古龙凹陷白垩系青山口组一段富有机质泥页岩为例[J]. 石油勘探与开发, 2018, 45(5):828-838. Liu B, Shi J X, Fu X F, et al. Petrological characteristics and shale oil enrichment of lacustrine fine-grained sedimentary system:a case study of organic-rich shale in first member of Cretaceous Qingshankou Formation in Gulong Sag, Songliao Basin, NE China[J]. Petroleum Exploration and Development, 2018, 45(5):828-838.
|
[17] |
王玉华, 梁江平, 张金友, 等. 松辽盆地古龙页岩油资源潜力及勘探方向[J]. 大庆石油地质与开发, 2020, 39(3):20-34. Wang Y H, Liang J P, Zhang J Y, et al. Resource potential and exploration direction of Gulong shale oil in Songliao Basin[J]. Petroleum Geology & Oilfield Development in Daqing, 2020, 39(3):20-34.
|
[18] |
施立志, 王卓卓, 张革, 等. 松辽盆地齐家地区致密油形成条件与分布规律[J]. 石油勘探与开发, 2015, 42(1):44-50. Shi L Z, Wang Z Z, Zhang G, et al. Distribution and formation of tight oil in Qijia area, Songliao Basin, NE China[J]. Petroleum Exploration and Development, 2015, 42(1):44-50.
|
[19] |
吴蓝宇, 胡东风, 陆永潮, 等. 四川盆地涪陵气田五峰组-龙马溪组页岩优势岩相[J]. 石油勘探与开发, 2016, 43(2):189-197. Wu L Y, Hu D F, Lu Y C, et al. Advantageous shale lithofacies of Wufeng Formation-Longmaxi Formation in Fuling gas field of Sichuan Basin, SW China[J]. Petroleum Exploration and Development, 2016, 43(2):189-197.
|
[20] |
薛华庆, 胥蕊娜, 姜培学, 等. 岩石微观结构CT扫描表征技术研究[J]. 力学学报, 2015, 47(6):1073-1078. Xue H Q, Xu R N, Jiang P X, et al. Characterization of rock microstructure using 3D X-ray computed tomography[J]. Chinese Journal of Theoretical and Applied Mechanics, 2015, 47(6):1073-1078.
|
[1] |
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