Sealing of Matching between Fault and Caprock to Oil-Gas Migration along Faults: An Example from Middle and Shallow Strata in Nanpu Depression
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摘要: 为了研究南堡凹陷中浅层油气成藏规律, 采用区域性盖层厚度与断裂断距大小比较和与油气分布关系分析的研究方法, 对断盖配置对沿断裂运移油气的封闭作用进行了研究.结果表明: 断盖配置对沿断裂运移油气有3级封闭作用: (1)当盖层厚度大于断裂断距, 且断接厚度大于一定值时, 盖层与断裂配置对沿断裂运移油气可起完全封闭作用; (2)当盖层厚度大于断裂断距, 但断接厚度小于一定值时, 断盖配置对沿断裂运移油气可起部分封闭作用; (3)当盖层厚度小于断距, 断接厚度小于零时, 断盖配置对沿断裂运移油气无封闭作用.南堡凹陷3套区域性盖层中东二段泥岩和馆三段火山岩2套区域性盖层与断裂配置对沿断裂运移油气均具有完全、部分和无封闭三级作用, 明下段泥岩区域性盖层与断裂配置仅具完全封闭作用.3套区域性盖层与断裂配置的封闭作用之间, 空间不同配置对南堡凹陷中浅层油气聚集分布层位和区域的控制作用主要表现在以下3个方面: (1)南堡2号地区东二段区域性盖层与断裂配置为完全封闭, 油气主要分布在其下; (2)南堡1~5区块东二段区域性盖层与断裂配置为部分或无封闭, 馆三段区域性盖层与断裂配置为完全封闭, 油气主要分布在东一段和馆四段; (3)南堡1号和4号局部地区东二段和馆三段区域性盖层与断裂配置为部分或无封闭, 明下段区域性盖层与断裂配置为完全封闭, 油气从下至上皆有分布.Abstract: To study oil-gas accumulation law of middle and shallow strata in Nanpu depression, sealing of matching between fault and caprock to oil-gas migrating through faults was studied by the method contrasting between thickness of caprock and fault distance and analyzing the relation between it and oil-gas distribution. The results indicate that there are three grades sealing of regional caprock to oil-gas migration through faults: (1) when thickness of caprock is bigger than fault distance and faulted thickness of caprock is bigger than a fixed value, matching between fault and caprock can seal fully oil-gas migration through faults; (2) when thickness of caprock is less than fault distance and faulted thickness of caprock is less than a fixed value, matching between fault and caprock can partially seal oil-gas migration through faults; (3) when thickness of caprock is less than fault distance and faulted thickness of regional caprock is less than zero, matching between fault and caprock can not seal oil-gas migration through faults. Matching between faults and regional caprock of Ed2 and Ng3 both have a full, partial and no sealing to oil-gas migration through faults, and matching between faults and regional caprock of Nm1 has full sealing to oil-gas migration through faults in Nanpu depression. Controlling of relation of matching among sealing of matching between fault and three regional caprock to oil-gas migrating through faults to oil-gas accumulation horizons and areas is shown in following three aspects: (1) matching between faults and regional caprock of Ed2 in Nanpu2 region has full sealing, oil-gas distributes under it; (2) Matching between faults and regional caprock of Ed2 in Nanpu 1-5 block has partial or no sealing, but matching between faults and regional caprock of Ng3 has full sealing, oil-gas distributes mainl in Ed3 and Ng4; (3) Matching between faults and regional caprock of Ed2 and Ng3 in the part of Nanpu1 and Nanpu4 structures have partial or no sealing, but matching between faults and regional caprock of Nm1 has full sealing, oil-gas distributes from lower to upper.
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图 1 南堡凹陷中浅层盖层与油气剖面分布关系
Fig. 1. Relation between caprocks and oil-gas distribution of middle and shallow strata in Nanpu depression
图 2 南堡凹陷盖层分布
a.东二段泥岩盖层分布；b.馆三段火山岩盖层分布；c.明下段泥岩盖层分布
Fig. 2. Distribution of caprock in Nanpu depression
图 3 南堡凹陷中浅层输导断裂分布
Fig. 3. Distribution of faults transporting oil-gas of middle and shallow strata in Nanpu depression
图 4 断盖配置对沿断裂运移油气封闭作用模式
a.无封闭作用；b.部分封闭作用；c.完全封闭作用
Fig. 4. Scheme of sealing models of matching between fault and caprock to oil-gas migtation along faults
图 5 南堡凹陷盖层断接厚度与油气显示之间分布关系
a.东二段泥岩盖层；b.馆三段火山岩盖层
Fig. 5. Relation between effective thickness of caprock faulted and oil-gas displays in Nanpu depression
图 6 南堡凹陷2号东东二段泥盖层断接厚度与油气显示之间分布关系
Fig. 6. Relation between effective thickness of Ed2 mudstone caprock faulted and oil-gas displays in No.2 structure of Nanpu depression
图 7 南堡凹陷1~5区东二段泥盖层、馆三段火山岩盖层断接厚度与油气显示之间分布关系
Fig. 7. Relation between effective thickness of Ed2 mudstone caprock and Ng3 volcanic caprock faulted and oil-gas displays in 1-5 area of Nanpu depression
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Dong, Y.X., Wang, Z.C., Zheng, H.J., et al., 2008. Control of Strike-Slip Faulting on Reservoir Formation of Oil and Gas in Nanpu Sag. Petroleum Exploration and Development, 35(4): 424-430 (in Chinese with English abstract). doi: 10.1016/S1876-3804(08)60090-7 Du, C.G., Fu, G., 2007. Main Factors Controlling Hydrocarbon Accumulation and Distribution in the Second Member of Nantun Formation, Wuerxun Depression. Natural Gas Industry, 27(10): 24-27(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-TRQG200710011.htm Fan, B.J., Liu, C.L., Liu, G.D., et al., 2010. Forming Mechanism of the Fault System and Structural Ecolution History of Nanpu Sag. Journal of Xi'an Shiyou University (Natural Science Edition), 25(2): 13-23 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-XASY201002005.htm Fu, G., Du, C.G., Meng, Q.F., 2005. Analysis to Factors Controlling Formation and Distribution of Oil or Gas Reservoirs in Wuerxun Depression. Journal of Xi'an Shiyou University (Natural Science Edition), 20(1): 8-12 (in Chinese with English abstract). Fu, G., Lv, Y.F., Fu, X.F., et al., 2004. Time-Space Matching Relation of Source Rock, Caprock and Faults and Its Controlling Effect on Oil and Gas Reservoir in Fault Basin. Petroleum Geology and Recovery Efficiency, 11(5): 17-20 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-YQCS200405007.htm Fu, G., Wang, Y.G., 2008. Time and Space Matching Relation among Accumulation Essential Factors of Gas Reservoirs in Volcanic Rock and Its Controlling to Gas Accumulation: A Case Study of Deep Strata of Xujiaweizi Region. Earth Science—Journal of China University of Geosciences, 33(3): 82-88 (in Chinese with English abstract). http://www.researchgate.net/publication/287894994_Time_and_space_matching_relation_among_accumulation_essential_factors_of_gas_reservoirs_in_volcanic_rock_and_its_controlling_to_gas_accumulation_A_case_study_of_deep_strata_of_Xujiaweizi_region Fu, X.F., Wang, H.Y., Sun, Y., 2011. Shallow Gas Genesis and Reservoir Forming Mechanism in the South of Daqing Placanticline. Earth Science—Journal of China University of Geosciences, 36(1): 93-102 (in Chinese with English abstract). http://d.wanfangdata.com.cn/Periodical/dqkx201101010 Li, H.Y., Jiang, Z.X., Dong, Y.X., et al., 2010. Control of Faults on Hydrocarbon Migration and Accumulation in Nanpu Sag Bohai Bay Basin. Geoscince, 24(4): 754-761 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-XDDZ201004017.htm Lv, Y.F., Wan, J., Sha, Z.X., et al., 2008. Evaluation Method for Seal Ability of Caprock Destructed by Faulting and Its Application. Geological Sinica, 43(1): 162-174 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-DZKX200801014.htm Liu, S.Z., Zha, M., 2010. Accumulation Factors of the Deep Natural Gas in Dongying Depression and Their Time Matching Relation. Journal of Xi'an Shiyou University (Natural Science Edition), 25(1): 24-28 (in Chinese with English abstract). http://www.researchgate.net/publication/297425836_Accumulation_factors_of_the_deep_natural_gas_in_Dongying_Depression_and_their_time_matching_relation Shi, G.Z., Wang, H., Xu, B., et al., 2011. Activity of Baigezhuang Fault of Nanpu Depression and Its Controlling on Sedimentation. Acta Scientiarum Natrualium Universitatis Pekinensis, 47(1): 85-90 (in Chinese with English abstract). http://www.cnki.com.cn/Article/CJFDTotal-BJDZ201101015.htm Wan, T., Jiang, Y.L., Dong, Y.X., et al., 2013. Reconstructed and Traced Pathways of Hydrocarbon Migration in Nanpu Depression, Bohai Bay Basin. Earth Science—Journal of China University of Geosciences, 38(1): 173-180 (in Chinese with English abstract). doi: 10.3799/dqkx.2013.017 Wang, J.H., Wang, H., Wang, G.F., 2001. Capping of Thick Mudstones and Its Relationship with Oil and Gas in the Nanpu Depression. Experimental Petroleum Geology, 23(4): 418-423 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-SYSD200104012.htm Xie, J.L., Yang, K.G., 2006. Analysis of the Closeness of the Main Faults in Nanpu Sag in Southeastern Hebei at Key Hydrocarbon Accumulation Moments. Journal of Xi'an Shiyou University (Naturnal Science Edition), 21(3): 5-9 (in Chinese with English abstract). http://www.cnki.com.cn/Article/CJFDTotal-XASY200603002.htm Zhou, T.W., Zhou, J.X., 2008. Formation Mechanism of X-Pattern Normal Faults during Late Cenozoic and Their Impact on Hydrocarbon Accumulation in the Nanpu Sag of Boai Bay Basin. Geotectonica et Metallogenia, 32(1): 20-27 (in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-DGYK200801004.htm Zhou, T.W., Zhou, J.X., Dong, Y.X., et al., 2009. Formation Mechanism of Cenozoic Fault System of Nanpu Sag in Bohai Bay Basin. Journal of China Unviersity of Petrolem (Edition of Natural Science), 33(1): 12-17 (in Chinese with English abstract). http://www.researchgate.net/publication/286547396_Formation_mechanism_of_Cenozoic_fault_system_of_Nanpu_sag_in_Bohai_Bay_Basin 董月霞, 汪泽成, 郑红菊, 等, 2008. 走滑断层作用对南堡凹陷油气成藏的控制. 石油勘探与开发, 35(4): 424-430. doi: 10.3321/j.issn:1000-0747.2008.04.005 杜春国, 付广, 2007. 乌尔逊凹陷南二段油气成藏与分布主控因素. 天然气工业, 27(10): 24-27. doi: 10.3321/j.issn:1000-0976.2007.10.007 范柏江, 刘成林, 柳广弟, 等, 2010. 南堡凹陷断裂系统形成机制及构造演化研究. 西安石油大学学报(自然科学版), 25(2): 13-23. doi: 10.3969/j.issn.1673-064X.2010.02.003 付广, 杜春国, 孟庆芬, 2005. 乌尔逊凹陷油气成藏与分布控制因素分析. 西安石油大学学报(自然科学版), 20(1): 8-12. doi: 10.3969/j.issn.1673-064X.2005.01.002 付广, 吕延防, 付晓飞, 等, 2004. 断陷盆地源盖断时空匹配关系对油气成藏的控制作用. 油气地质与采收率, 11(5): 17-20. doi: 10.3969/j.issn.1009-9603.2004.05.006 付广, 王有功, 2008. 火山岩天然气成藏要素时空匹配及对成藏的控制作用: 以徐家围子地区深层为例. 地球科学——中国地质大学学报, 33(3): 82-88. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX200803008.htm 付晓飞, 王洪宇, 孙源, 2011. 大庆长垣南部浅层气成因及成藏机制. 地球科学——中国地质大学学报, 36(1): 93-102. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201101011.htm 李宏义, 姜振学, 董月霞, 等, 2010. 渤海湾盆地南堡凹陷断层对油气运聚的控制作用. 现代地质, 24(4): 754-761. https://www.cnki.com.cn/Article/CJFDTOTAL-XDDZ201004017.htm 吕延防, 万军, 沙子萱, 等, 2008. 被断裂破坏的盖层封闭能力评价方法及其应用. 地质科学, 43(1): 162-174. https://www.cnki.com.cn/Article/CJFDTOTAL-DZKX200801014.htm 刘士忠, 查明, 2010. 东营凹陷深层天然气成藏要素及其时间匹配关系. 西安石油大学学报(自然科学版), 25(1): 24-28. https://www.cnki.com.cn/Article/CJFDTOTAL-XASY201001007.htm 史冠中, 王华, 徐备, 等, 2011. 南堡凹陷柏各庄断层活动特征及对沉积的控制. 北京大学学报(自然科学版), 47(1): 85-90. https://www.cnki.com.cn/Article/CJFDTOTAL-BJDZ201101015.htm 万涛, 蒋有录, 董月霞, 等, 2013. 渤海湾盆地南堡凹陷油气运移路径模拟及示踪. 地球科学——中国地质大学学报, 38(1): 173-180. https://www.cnki.com.cn/Article/CJFDTOTAL-DQKX201301022.htm 王家豪, 王华, 王根发, 2001. 南堡凹陷厚层泥岩的封盖作用及期与油气的关系. 石油实验地质, 23(4): 418-423. doi: 10.3969/j.issn.1001-6112.2001.04.012 谢建磊, 杨坤光, 2006. 冀东南堡凹陷关键成藏时刻主要断裂封闭性分析. 西安石油大学学报(自然科学版), 21(3): 5-9. https://www.cnki.com.cn/Article/CJFDTOTAL-XASY200603002.htm 周天伟, 周建勋, 2008. 南堡凹陷晚新生代X型断层形成机制及其对油气运聚的控制. 大地构造与成矿学, 32(1): 20-27. https://www.cnki.com.cn/Article/CJFDTOTAL-DGYK200801004.htm 周天伟, 周建勋, 董月霞, 等, 2009. 渤海湾盆地南堡凹陷新生代断裂系统形成机制. 中国石油大学学报(自然科学版), 33(1): 12-17. https://www.cnki.com.cn/Article/CJFDTOTAL-SYDX200901003.htm -
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