RESERVOIR ACCUMULATION DYNAMIC CONDITIONS OF CHANG 8 MEMBER IN THE SOUTHWEST MARGIN OF ORDOS BASIN
LIANG Zheng-zhong1, WANG Jing-hui1, LI Chang2
1. School of Chemistry Engineering, Yulin University, Yulin 719000, Shaanxi Province, China; 2. Hangzhou Research Institute of Geology, CNPC, Hangzhou 310023, China
Abstract：Based on massive data from new well drilling tests, acoustic logging and fluid inclusion analysis, the deep abnormal pressure in Huanxian-Pengyang area and its surroundings are studied to find out the dynamic mechanism of hydrocarbon migration and accumulation of Chang 8 Member in the southwest margin of Ordos Basin. The results show that there is a certain residual pressure difference between the bottom of Chang 7 and the top of Chang 8 members. The plane distribution characteristics of pressure show a gradually decreasing from the center to depression margin, which are consistent with the trend of whole basin fluid pressure. The abnormal high pressure from hydrocarbon generation of source rocks in Chang 7 Member can cause the hydrocarbon to migrate downward on a large scale and charge into Chang 8 reservoir. The restored paleopressure of fluid inclusion by simulation shows that the crude oil still remains a certain abnormal high pressure after charging into Chang 8 reservoir. Compared with the interior of basin, despite the low residual pressure difference between source and reservoir on the whole, it is still the main hydrocarbon accumulation dynamic mechanism of Chang 8 Member in the southwest margin. It is expected that the study can help further understand the accumulation mechanism and distribution rule of low permeability tight oil in the basin margin, and provide reference for expanding exploration fields.
梁正中, 王镜惠, 李昌. 鄂尔多斯盆地西南缘长8段油藏成藏动力条件探讨[J]. 地质与资源, 2023, 32(3): 320-326.
LIANG Zheng-zhong, WANG Jing-hui, LI Chang. RESERVOIR ACCUMULATION DYNAMIC CONDITIONS OF CHANG 8 MEMBER IN THE SOUTHWEST MARGIN OF ORDOS BASIN. GEOLOGY AND RESOURCES, 2023, 32(3): 320-326.
罗晓容. 油气成藏动力学研究之我见[J]. 天然气地球科学, 2008, 19(2):149-156. Luo X R. Understandings on dynamical studies of hydrocarbon migration and accumulation[J]. Natural Gas Geoscience, 2008, 19(2):149-156.
[2]
姚泾利, 徐丽, 邢蓝田, 等. 鄂尔多斯盆地延长组长7和长8油层组流体过剩压力特征与油气运移研究[J]. 天然气地球科学, 2015, 26(12):2219-2226. Yao J L, Xu L, Xing L T, et al. Fluid overpressure and oil migration in Chang 7 and Chang 8 subsections of Yanchang Formation in Ordos Basin, China[J]. Natural Gas Geoscience, 2015, 26(12):2219-2226.
[3]
罗晓容. 油气运聚动力学研究进展及存在问题[J]. 天然气地球科学, 2003, 14(5):337-346. Luo X R. Review of hydrocarbon migration and accumulation dynamics[J]. Natural Gas Geoscience, 2003, 14(5):337-346.
[4]
刘震, 陈凯, 朱文奇, 等. 鄂尔多斯盆地西峰地区长7段泥岩古压力恢复[J]. 中国石油大学学报(自然科学版), 2012, 36(2):1-7. Liu Z, Chen K, Zhu W Q, et al. Paleo-pressure restoration of Chang 7 shale in Xifeng area, Ordos Basin[J]. Journal of China University of Petroleum (Edition of Natural Science), 2012, 36(2):1-7.
[5]
姚泾利, 赵彦德, 邓秀芹, 等. 鄂尔多斯盆地延长组致密油成藏控制因素[J]. 吉林大学学报(地球科学版), 2015, 45(4):983-992. Yao J L, Zhao Y D, Deng X Q, et al. Controlling factors of tight oil reservoir in Triassic Yanchang Formation in Ordos Basin[J]. Journal of Jilin University (Earth Science Edition), 2015, 45(4):983-992.
[6]
张忠义, 陈世加, 杨华, 等. 鄂尔多斯盆地三叠系长7段致密油成藏机理[J]. 石油勘探与开发, 2016, 43(4):590-599. Zhang Z Y, Chen S J, Yang H, et al. Tight oil accumulation mechanisms of Triassic Yanchang Formation Chang 7 Member, Ordos Basin, China[J]. Petroleum Exploration and Development, 2016, 43(4):590-599.
[7]
雷华伟, 韩华峰, 乔力, 等. 鄂尔多斯盆地靖边油田曹崾岘区延9油藏富集规律[J]. 地质与资源, 2018, 27(5):466-471. Lei H W, Han H F, Qiao L, et al. Enrichment regularity of Y-9 reservoir in Caoyaoxian area of Jingbian Oilfield, Ordos Basin[J]. Geology and Resources, 2018, 27(5):466-471.
[8]
周琦. 陆相断陷盆地致密油藏特征与分类[J]. 地质与资源, 2019, 28(1):30-34. Zhou Q. Characteristics and classification of tight reservoir in continental fault basins[J]. Geology and Resources, 2019, 28(1):30-34.
[9]
石玉江, 李高仁, 周金昱, 等. 鄂尔多斯盆地中生界延长组低渗透致密油藏充注模式测井识别[J]. 测井技术, 2016, 40(2):202-208. Shi Y J, Li G R, Zhou J Y, et al. Filling mode and corresponding log interpretation method for low permeability-tight reservoirs in Yanchang Group, Mesozoic, Ordos Basin[J]. Well Logging Technology, 2016, 40(2):202-208.
[10]
高岗, 刚文哲, 范泓澈, 等. 含油气盆地异常低压成因研究现状[J]. 天然气地球科学, 2008, 19(3):311-315. Gao G, Gang W Z, Fan H C, et al. Research advances for the genesis of abnormally low formation pressure in petroliferous basins[J]. Natural Gas Geoscience, 2008, 19(3):311-315.
[11]
杨飏, 郭正权, 黄锦绣, 等. 鄂尔多斯盆地西南部延长组过剩压力与油藏的关系[J]. 地球科学与环境学报, 2008, 28(2):49-52. Yang Y, Guo Z Q, Huang J X, et al. Overpressure relation to oilfields in Yanchang Formation SW Ordos Basin[J]. Journal of Earth Sciences and Environment, 2006, 28(2):49-52.
[12]
Hunt J M. Generation and migration of petroleum from abnormally pressured fluid compartments[J]. AAPG Bulletin, 1990, 74(1):1-12.
[13]
宋兴沛, 刘洛夫, 徐正建, 等. 鄂尔多斯盆地中西部长7段烃源岩及致密油潜力评价[J]. 新疆石油地质, 2017, 38(5):553-558. Song X P, Liu L F, Xu Z J, et al. Evaluation of source rocks and tight off exploration potential of Chang-7 Member in central and western Ordos Basin[J]. Xinjiang Petroleum Geology, 2017, 38(5):553-558.
[14]
刘明洁, 刘震, 刘静静, 等. 砂岩储集层致密与成藏耦合关系——以鄂尔多斯盆地西峰-安塞地区延长组为例[J]. 石油勘探与开发, 2014, 41(2):168-175. Liu M J, Liu Z, Liu J J, et al. Coupling relationship between sandstone reservoir densification and hydrocarbon accumulation:A case from the Yanchang Formation of the Xifeng and Ansai areas, Ordos Basin[J]. Petroleum Exploration and Development, 2014, 41(2):168-175.
[15]
刘新社, 席胜利, 黄道军, 等. 鄂尔多斯盆地中生界石油二次运移动力条件[J]. 石油勘探与开发, 2008, 35(2):143-147. Liu X S, Xi S L, Huang D J, et al. Dynamic conditions of Mesozoic petroleum secondary migration, Ordos Basin[J]. Petroleum Exploration and Development, 2008, 35(2):143-147.
[16]
吴保祥, 段毅, 郑朝阳, 等. 鄂尔多斯盆地古峰庄-王洼子地区长9油层组流体过剩压力与油气运移研究[J]. 地质学报, 2008, 82(6):844-849. Wu B X, Duan Y, Zheng Z Y, et al. Fluid overpressure and migration of oil and gas from Chang 9 Member in Gufengzhuang-Wangwazi area, Ordos basin[J]. Acta Geologica Sinica, 2008, 82(6):844-849.
[17]
吴凯, 李善鹏, 罗丽荣, 等. 特低渗-致密砂岩储层成藏模拟试验与成藏机理[J]. 地球科学与环境学报, 2013, 35(4):10-17. Wu K, Li S P, Luo L R, et al. Simulation experiment of petroleum migration and accumulation mechanism for extra-low permeability and tight sandstone reservoirs[J]. Journal of Earth Sciences and Environment, 2013, 35(4):10-17.
[18]
郑民, 李建忠, 吴晓智, 等. 致密储集层原油充注物理模拟——以准噶尔盆地吉木萨尔凹陷二叠系芦草沟组为例[J]. 石油勘探与开发, 2016, 43(2):219-227. Zheng M, Li J Z, Wu X Z, et al. Physical modeling of oil charging in tight reservoirs:A case study of Permian Lucaogou Formation in Jimsar sag, Junggar Basin, NW China[J]. Petroleum Exploration and Development, 2016, 43(2):219-227.
[19]
刘德汉, 卢焕章, 肖贤明. 油气包裹体及其在石油勘探和开发中的应用[M]. 广州:广东科技出版社, 2007:109-111. Liu D H, Lu H Z, Xiao X M. Oil and gas inclusions and its application in oil exploration and development[M]. Guangzhou:Guangdong Science and Technology Press, 2007:109-111. (in Chinese)
[20]
杨智, 付金华, 郭秋麟, 等. 鄂尔多斯盆地三叠系延长组陆相致密油发现、特征及潜力[J]. 中国石油勘探, 2017, 22(6):9-15. Yang Z, Fu J H, Guo Q L, et al. Discovery, characteristics and resource potential of continental tight oil in Triassic Yanchang Formation, Ordos Basin[J]. China Petroleum Exploration, 2017, 22(6):9-15.
[21]
郭凯, 曾溅辉, 刘涛涛. 鄂尔多斯盆地延长组石油充注动力的包裹体热动力学模拟[J]. 地质科技情报, 2015, 34(2):152-158. Guo K, Zeng J H, Liu T T. Petroleum inclusion thermodynamic simulation on oil charging pressure of Yanchang Formation in Ordos Basin[J]. Geological Science and Technology Information, 2015, 34(2):152-158.
[22]
邓秀芹, 刘新社, 李士祥. 鄂尔多斯盆地三叠系延长组超低渗透储层致密史与油藏成藏史[J]. 石油与天然气地质, 2009, 30(2):156-161. Deng X Q, Liu X S, Li S X. The relationship between compacting history and hydrocarbon accumulating history of the super-low permeability reservoirs in the Triassic Yanchang Formation in the Ordos Basin[J]. Oil & Gas Geology, 2009, 30(2):156-161.
[23]
李相博, 刘显阳, 周世新, 等. 鄂尔多斯盆地延长组下组合油气来源及成藏模式[J]. 石油勘探与开发, 2012, 39(2):172-180. Li X B, Liu X Y, Zhou S X, et al. Hydrocarbon origin and reservoir forming model of the Lower Yanchang Formation, Ordos Basin[J]. Petroleum Exploration and Development, 2012, 39(2):172-180.
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