Petroleum Exploration and Development >
Occurrence mechanism of lacustrine shale oil in the Paleogene Shahejie Formation of Jiyang Depression, Bohai Bay Basin, China
Received date: 2018-11-26
Revised date: 2019-02-28
Online published: 2019-08-24
Supported by
Supported by Natural Science Foundation of China(41672116);the China National Science and Technology Major Project(2017ZX05049004)
To determine the occurrence mechanism and mobility of shale oil in the Shahejie Formation in the Jiyang Depression, organic geochemistry analysis, thin-section petrological observation, low-temperature nitrogen adsorption, high-pressure mercury intrusion porosimetry, field emission scanning electron microscopy experiments were conducted on shale samples to reveal its storage mechanism, including pore size, ratio of adsorbed oil to free oil, mobility and its influencing factors, and mode of storage. Residual shale oil is mainly present in pores less than 100 nm in diameter under the atmospheric temperature and pressure. The lower limit of pore size for free oil is 5 nm, and the lower limit of pore size for movable oil occurrence is about 30 nm. The light components, low TOC and high porosity are the main factors contributing to the high proportion of movable oil. Each type of pore can contain residual shale oil, but not all pores have shale oil. Pore connectivity and surface wettability are the determinants of shale oil enrichment degree and enrichment state.
Min WANG , Rui MA , Jinbu LI , Shuangfang LU , Chuanming LI , Zhiqiang GUO , Zheng LI . Occurrence mechanism of lacustrine shale oil in the Paleogene Shahejie Formation of Jiyang Depression, Bohai Bay Basin, China[J]. Petroleum Exploration and Development, 2019 , 46(4) : 833 -846 . DOI: 10.1016/S1876-3804(19)60242-9
| [1] | LU S, LIU W, WANG M , et al. Lacustrine shale oil resource potential of Es3 L sub-member of Bonan Sag, Bohai Bay Basin, Eastern China . Journal of Earth Science, 2017,28(6):996-1005. |
| [2] | WANG M, LIU Y, LU S . Classification and oil system of continental shale: Es3 L sub-member of Bonan Sag, Jiyang Depression, Eastern China . Arabian Journal of Geosciences, 2016,9(3):178. |
| [3] | WANG M, SHERWOOD N, LI Z , et al. Shale oil occurring between salt intervals in the Dongpu Depression, Bohai Bay Basin, China. International Journal of Coal Geology, 2015,152(1):100-112. |
| [4] | WANG M, WILKINS R W T, SONG G, WANG M , et al. Geochemical and geological characteristics of the Es3 L lacustrine shale in the Bonan Sag, Bohai Bay Basin, China . International Journal of Coal Geology, 2015,138(15):16-29. |
| [5] | WANG Min, GUAN Ying, LI Chuanming , et al. Qualitative description and full-pore-size quantitative evaluation of pores in lacustrine shale reservoir of Shahejie Formation, Jiyang Depression. Oil & Gas Geology, 2018,39(6):1107-1119. |
| [6] | LU Shuangfang, WANG Min, XUE Haitao . Reservoir forming regularity and resource potential evaluation of shale oil and gas. Qingdao: China University of Petroleum (East China), 2013. |
| [7] | LU Shuangfang, LI Junqian, ZHANG Pengfei , et al. Classification of microscopic pore-throats and the grading evaluation on shale oil reservoirs. Petroleum Exploration and Development, 2018,45(3):436-444. |
| [8] | ZHAO Xianzheng, ZHOU Lihong, PU Xiugang , et al. Geological characteristics of shale rock system and shale oil exploration in a lacustrine basin: A case study from the Paleogene 1st sub-member of Kong 2 Member in Cangdong sag, Bohai Bay Basin, China. Petroleum Exploration and Development, 2018,45(3):361-372. |
| [9] | ZOU Caineng. Unconventional petroleum geology. Beijing: Geological Publishing House, 2014: 274-312. |
| [10] | MA Yongsheng, FENG Jianhui, MU Zehui , et al. The potential and exploring progress of unconventional hydrocarbon resources in SINOPEC. Engineering Sciences, 2012,14(6):22-30. |
| [11] | ZHANG Jinchuan, LIN Lamei, LI Yuxi , et al. Classification and evaluation of shale oil. Earth Science Frontiers, 2012,19(5):322-331. |
| [12] | NING Fangxing . The main control factors of shale oil enrichment in Jiyang Depression. Acta Petrolei Sinica, 2015,36(8):905-914. |
| [13] | NING Fangxing, WANG Xuejun, HAO Xuefeng , et al. Occurrence mechanism of shale oil with different lithofacies in Jiyang Depression. Acta Petrolei Sinica, 2017,38(2):185-195. |
| [14] | SONG Guoqi, XU Xingyou, LI Zheng , et al. Factors controlling oil production from Paleogene shale in Jiyang Depression. Oil & Gas Geology, 2015,36(3):463-471. |
| [15] | WANG Yong, LIU Huimin, SONG Guoqi , et al. Enrichment controls and models of shale oil in the Jiyang Depression, Bohai Bay Basin. Geological Journal of China Universities, 2017,23(2):268-276. |
| [16] | WANG Yong, SONG Guoqi, JIANG Xiufang , et al. Main control factors of enrichment characteristics of shale oil in Jiyang Depression. Petroleum Geology and Recovery Efficiency, 2015,22(4):20-25. |
| [17] | WANG Yong, WANG Xuejun, SONG Guoqi , et al. Genetic connection between mud shale lithofacies and shale oil enrichment in Jiyang Depression, Bohai Bay Basin. Petroleum Exploration and Development, 2016,43(5):696-704. |
| [18] | TIAN S, XUE H, LU S , et al. Molecular simulation of oil mixture adsorption character in shale system. Journal of Nanoscience and Nanotechnology, 2017,17(9):6198-6209. |
| [19] | WANG S, FENG Q, JAVADPOUR F , et al. Oil adsorption in shale nanopores and its effect on recoverable oil-in-place. International Journal of Coal Geology, 2015,147/148:9-24. |
| [20] | NING Fangxing, WANG Xuejun, HAO Xuefeng , et al. Occurrence state and mobility analysis of shale oil in Jiyang Depression. Xinjiang Oil & Gas, 2015,11(3):1-6. |
| [21] | LI J, HUANG W, LU S , et al. Nuclear magnetic resonance T1-T2 map division method for hydrogen-bearing components in continental shale. Energy & Fuels, 2018,32(9):9043-9054. |
| [22] | LI Z, ZOU Y, XU X , et al. Adsorption of mudstone source rock for shale oil: Experiments, model and a case study. Organic Geochemistry, 2016,92:55-62. |
| [23] | SANEI H, WOOD J M, ARDAKANI O H , et al. Characterization of organic matter fractions in an unconventional tight gas siltstone reservoir. International Journal of Coal Geology, 2015,150/151:296-305. |
| [24] | ZHU X, CAI J, LIU W , et al. Occurrence of stable and mobile organic matter in the clay-sized fraction of shale: Significance for petroleum geology and carbon cycle. International Journal of Coal Geology, 2016,160/161:1-10. |
| [25] | JIANG Qigui, LI Maowen, QIAN Menhui , et al. Quantitative characterization of shale oil in different occurrence states and its application. Petroleum Geology & Experiment, 2016,38(6):842-849. |
| [26] | QIAN Menhui, JIANG Qigui, LI Maowen , et al. Quantitative characterization of extractable organic matter in lacustrine shale with different occurrences. Petroleum Geology & Experiment, 2017,39(2):278-286. |
| [27] | ZHANG Linye, BAO Youshu, LI Juyuan , et al. Hydrocarbon and crude oil adsorption abilities of minerals and kerogens in lacustrine shales. Petroleum Geology & Experiment, 2015,37(6):776-780. |
| [28] | LI Zheng, WANG Xiuhong, ZHU Rifang , et al. Geochemical evaluation of shale oil in Lower Es3 and Upper Es4 in Jiyang Depression. Xinjiang Petroleum Geology, 2015,36(5):510-514. |
| [29] | ZHANG Linye, BAO Youshu, LI Juyuan , et al. Movability of lacustrine shale oil: A case study of Dongyin Sag, Jiyang Depression, Bohai Bay Basin. Petroleum Exploration and Development, 2014,41(6):641-649. |
| [30] | ZHANG Shun, LIU Huimin, WANG Min , et al. Pore evolution of shale oil reservoirs in Dongying Sag. Acta Petrolei Sinica, 2018,39(7):754-766. |
| [31] | LU Hao, JIANG Youlu, LIU Hua , et al. Study on formation stages of oilgas reservoirs in Bonan sub-sag, Zhanhua Sag. Petroleum Geology and Recovery Efficiency, 2012,19(2):5-8. |
| [32] | SONG Guoqi, LIU Hua, JIANG Youlu , et al. Genetic types and distribution characteristic of crude oils from Shehejie Fromation in Bonan Subsag, Zhanhua Sag, Jiyang Depression. Petroleum Geology & Experiment, 2014,36(1):33-38. |
| [33] | HUANG Zhenkai, CHEN Jianping, WANG Yijun , et al. Pore distribution of source rocks as reavealed by gas a dsorption and mercury injection methods: A case study on the first Member of the Cretaceous Qingshankou Formation in the Songliao Basin. Geological Review, 2013,59(3):587-595. |
| [34] | WANG Min, JIAO Chenxue, LI Chuanming , et al. Multifractal characteristics of microscopic pore of Shahejie Formation shale in Dongying Sag, Jiyang Depression. Petroleum Geology and Recovery Efficiency, 2019,26(1):72-79. |
| [35] | LIU Huimin, ZHANG Shoupeng, WANG Pu , et al. Lithologic characteristics of Lower Es3 shale in Luojia area, Zhanhua Sag. Petroleum Geology and Recovery Efficiency, 2012, 19(6): 11-15, 111-112. |
| [36] | SONG Guoqi, ZHANG Linye, LU Shuangfang , et al. Resource evaluation method for shale oil and its application. Earth Science Frontiers, 2013,20(4):221-228. |
| [37] | WANG M, LU S, WANG Z , et al. Reservoir Characteristics of Lacustrine Shale and Marine Shale: Examples from the Songliao Basin, Bohai Bay Basin and Qiannan Depression. Acta Geologica Sinica-English Edition, 2016,90(3):1024-1038. |
| [38] | WANG G, JU Y, YAN Z , et al. Pore structure characteristics of coal-bearing shale using fluid invasion methods: A case study in the Huainan-Huaibei Coalfield in China. Marine and Petroleum Geology, 2015,62:1-13. |
| [39] | LI Zhuo, JIANG Zhenxue, TANG Xianglu , et al. Lithofacies characteristics and its effect on pore structure of the marine shale in the low Silurian Longmaxi Formation, Southeastern Chongqing. Earth Science, 2017,42(7):1116-1123. |
| [40] | WANG M, YANG J, WANG Z , et al. Nanometer-scale pore characteristics of lacustrine shale, Songliao Basin, NE China. PLOS one, 2015,10(8):1-18. |
| [41] | LI Jijun, SHI Yinglin, HUANG Zhenkai , et al. Pore characteristics of continental shale and its impact on storage of shale oil in northern Songliao Basin. Journal of China University of Petroleum(Edition of Natural Science), 2015,39(4):27-34. |
| [42] | ZHU Rifang, ZHANG Linye, LI Juyuan , et al. Quantitative evaluation of residual liquid hydrocarbons in shale. Acta Petrolei Sinica, 2015,36(1):13-18. |
| [43] | PEPPER A S, CORVI P J . Simple kinetic models of petroleum formation. Part I: Oil and gas generation from kerogen. Marine and Petroleum Geology, 1995,12(3):291-319. |
| [44] | PEPPER A S, CORVI P J . Simple kinetic models of petroleum formation. Part III: Modelling an open system. Marine and Petroleum Geology, 1995,12(4):417-452. |
| [45] | TIAN Shansi, XUE Haitao, LU Shuangfang , et al. Discussion on the mechanism of different types of kerogen remaining oil and gas. Beijing: Annual Meeting of Chinese Geoscience Union, 2014. |
| [46] | WEI Z, ZOU Y, CAI Y , et al. Kinetics of oil group-type generation and expulsion: An integrated application to Dongying Depression, Bohai Bay Basin, China. Organic Geochemistry, 2012,52(6):1-12. |
| [47] | PERNYESZI T, PATZKó á, BERKESI O , et al. Asphaltene adsorption on clays and crude oil reservoir rocks. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 1998,137(1/2/3):373-384. |
| [48] | CHANG X, XUE Q, LI X , et al. Inherent wettability of different rock surfaces at nanoscale: A theoretical study. Applied Surface Science, 2018,434:73-81. |
| [49] | TIAN S, ERASTOVA V, LU S , et al. Understanding model crude oil component interactions on kaolinite silicate and aluminol surfaces: Towards improved understanding of shale oil recovery. Energy & Fuels, 2018,32(2):1155-1165. |
| [50] | JIN Z, FIROOZABADI A . Effect of water on methane and carbon dioxide sorption in clay minerals by Monte Carlo simulations. Fluid Phase Equilibria, 2014,382:10-20. |
| [51] | XIONG J, LIU X J, LIANG L X , et al. Investigation of methane adsorption on chlorite by grand canonical Monte Carlo simulations. Petroleum Science, 2017,14(1):37-49. |
| [52] | WANG Min, LI Jinbu, GUO Zhiqiang , et al. An evaluation method for hydrogen composition,porosity and pore size of organic shale: 201810260408.0. 2018-08-28. |
/
| 〈 |
|
〉 |