Concept, Characteristics and Prospecting Significance of Fine-Grained Sedimentary Oil Gas in Terrestrial Lake Basin: A Case from the Second Member of Paleogene Kongdian Formation of Cangdong Sag, Bohai Bay Basin
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摘要: 陆相湖盆致密油气与传统致密油气和页岩油气有相关性，也体现出较大的差异性.通过对渤海湾盆地沧东凹陷孔店组二段（孔二段）优质"生油岩"开展岩性、物性、生烃特性、含油性、脆性综合分析及勘探实践，发现了一种赋存于陆相湖盆细粒沉积岩（粒径小于62.5 μm）之中的油气，并提出了细粒岩油气的概念.细粒岩油气不同于传统的致密油气和页岩油气，具有以细粒沉积为主，主要发育碳酸盐岩、细粒长英沉积岩、细粒混合沉积岩3种岩类；纵向上表现为纹层状或块状沉积，平面上稳定分布；3种岩性均具备良好的生烃条件，均具有一定的储集空间，均有明显的含油气特征，脆性矿物含量均较高，具有较好的可压裂性.该类油气藏在空间上连续稳定分布，整体含油气，甜点段富集高产，通过分段分簇大型压裂改造，具备长期稳产的有利条件，是陆相湖盆非常规油气勘探的重点领域.Abstract: The tight oil and gas in terrestrial lacustrine basin shows great differences from the traditional tight/shale oil and gas.The second Member of Paleogene Kongdian Formation is an important souce rock of Cangdong Sag, Bohai Bay Basin, based on the comprehensive analysis of lithology, physical properties, hydrocarbon generation characteristics, oiliness, brittleness and exploration practice, an new oil gas reservoir was discovered in fine-grained sedimentary rocks in terrestrial lake basin, the concept of fine-grained sedimentary oil reservoir was proposed which is different from traditional tight oil gas and shale oil gas. Fine-grained sedimentary rock is mainly composed of carbonate rock, fine-grained feldspar-quartzose sedimentary rock and fine-grained mixed sedimentary rock and has the characteristic of vertically thin interbed deposits, stable plane distribution, fine hydrocarbon generation conditions, certain reservoir space, obvious hydrocarbon characteristics, high content of brittle minerals and good fracturability. These reservoirs are continuously and stably distributed in space, containing oil gas as a whole, and the dessert section is enriched, featuring high-yield. With favorable long-term stable production conditions through segmented clumps and fracturing reconstruction, it is the key areas for unconventional oil and gas exploration in terrestrial lake basin.
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图 1 沧东凹陷孔二段沉积体系及单井柱状图
Fig. 1. Deposition system and single well integrated histogram of the second member of Kongdian Formation in Cangdong Depression
图 2 沧东凹陷孔二段岩石矿物特征
a.3 359.76 m，3 000×，颗粒表面及粒间充填的自形石英和片状粘土矿物；b.3 381.38 m，15 000×，自生长石；c.3 382.41 m，4 000×，粒间充填方解石胶结物，少量丝缕状粘土矿物；d.2 935.31 m，12 000×，自形白云石；e.2 935.31 m，6 000×，粒间充填球粒状方沸石；f.2 985.72 m，22 000×，粘土矿物定向排列；g.3 294.66 m，8 000×，放射状黄铁矿
Fig. 2. Rock mineral characteristics of the second member of Kongdian Formation in Cangdong Depression
图 3 沧东凹陷孔二段细粒沉积岩岩相类型
a.细粒沉积岩三端元结构图; b.纹理结构细粒长英沉积岩，G108-8井，2 957.35 m; c.块状结构碳酸盐岩，G108-8井，3 162.77 m; d.纹理结构细粒混合沉积岩，G108-8井，3 040.55 m
Fig. 3. Petrography of fine-grained sedimentary rock of the second member of Kongdian Formation in Cangdong Depression
图 4 孔二段岩性组合特征
Fig. 4. Characteristics of lithologic combination of the second member of Kongdian Formation
图 5 沧东凹陷孔二段有机质丰度
Fig. 5. Organic abundance of the second member of Kongdian Formation in Cangdong Depression
图 6 细粒沉积岩储集空间特征
Fig. 6. Reservoir spatial characteristics of fine-grained sedimentary rock
图 7 细粒沉积岩荧光显示特征
a.沥青充填顺层微缝，黄色荧光; b.整体发褐色弱光，团块状有机质发蓝白色亮光; c.主体为棕褐色暗光与蓝黄色荧光交互，蓝黄色荧光为油质沥青; d.白云石晶隙发光，向晶体浸染; e.整体发深褐色暗荧光，溶蚀孔隙发蓝白色荧光; f.沥青充填构造裂缝(异常压力缝)、成岩缝; g.整体荧光分布均匀，主要为淡黄色亮荧光与蓝绿色中亮荧光; h.砂质颗粒不发光，基质中间条带状、片状有机质，发黄色亮光; i.片状顺层分布的胶磷矿发光
Fig. 7. Fluorescent display feature of fine-grained sedimentary rock
图 8 细粒沉积岩不同脆性指数之间的关系
Fig. 8. The combination of different brittleness index of fine-grained sedimentary rock
图 10 陆相湖盆细粒岩油气分布模式
Fig. 10. Oil and gas distribution mode of fine-grained sedimentary rock in continental lake basin
图 11 沧东凹陷孔二段细粒沉积岩油(藏)勘探成效
Fig. 11. Exploration effectiveness of fine-grained sedimentary oil gas of the second member of Kongdian Formation in Cangdong Depression
表 1 细粒岩油与致密油、页岩油地质特征对比
Table 1. Geological feature comparison among fine-grained sedimentary oil gas, tight oil and shale oil
条件与指标类型 致密油 页岩油 细粒岩油 沉积条件 盆地类型沉积环境 坳陷、克拉通为主海相、陆相 坳陷、前陆、断陷为主海相、海陆过渡相、陆相 断陷为主陆相 类型 Ⅰ、Ⅱ Ⅰ、Ⅱ1 Ⅰ~Ⅱ1为主，少量Ⅱ2 有机质 TOC 大于2%以上 大于2%以上 普遍大于1% Ro 0.6%~1.3% 0.6%~2.1% 0.6%~1.0% 粒度 0.003 9~0.25 mm 小于0.062 5 mm 小于0.062 5 mm 岩性 粉细砂岩、白云岩 泥页岩 细粒沉积岩 物性 结构差异 矿物分异度高 矿物分异度高 矿物分异度低 有效储 基质孔、溶蚀孔 层理缝、微裂缝为主； 基质孔为主、少量微裂缝 集空间 孔喉为40~900 nm 孔喉以20~700 nm为主，平均为520 nm 储集物性 孔隙度以8%~12%为主；大于1.0 ×10-3μm2的储集层占比大于70% 孔隙度为2%~5%为主；渗透率在0.001~1.0 ×10-3μm2之间 孔隙度为0.3%~13.2%为主，平均3.92%；渗透率为0.001~25.3 ×10-3μm2，平均为1.36 ×10-3μm2 运聚条件 运移特征 一次运移或短距离二次运移为主 经短距离运移 未运移 聚集动力 扩散为主、浮力作用受限 生烃增压 生烃增压 
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[1] Chen, C.W., Xue, L.F., Xu, X.K., et al., 2007.Re-Establishment of Basin Framework on Member 2 of Kongdian Formation in KongnanArea, Huanghua Depression.Acta Sedimentologica Sinica, 25(4):511-517(in Chinese with English abstract). [2] Chen, S.J., Zhang, H.X., Lu, J.G., et al., 2015.Controlling Factors of Jurassic Da'anzhai Member Tight Oil Accumulation and High Production in Central Sichuan Basin, SW China.Petroleum Exploration and Development, 42(2):186-193(in Chinese with English abstract). http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=syktykf201502007 [3] Chen, S.Y., Zhang, S., Liu, H.M., et al., 2017.Discussion on Mixing of Fine-Grained Sediments in Lacustrine Deep Water.Journal of Palaeogeography, 19(2):271-284(in Chinese with English abstract). http://www.en.cnki.com.cn/Article_en/CJFDTOTAL-GDLX201702008.htm [4] Dong, Q.Y., Liu, X.P., Li, H.X., et al., 2013.Formation Conditions of Shale Oil Roservoir in the Second Member of Kongdian Formation in Southern Kongdian Area, Huanghua Depression.Natural Gas Geoscience, 24(1):188-198(in Chinese with English abstract). http://www.nggs.ac.cn/EN/abstract/abstract3279.shtml [5] Du, J.H., He, H.Q., Yang, T., et al., 2014.Progress in China's Tight Oil Exploration and Challenges.China Petroleum Exploration, 19(1):1-9(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTOTAL-KTSY201401001.htm [6] Guo, T.L., Zhang, H.R., 2014.Formation and Enrichment Mode of Jiaoshiba Shale Gas Field, Sichuan Basin.Petroleum Exploration and Development, 41(1):28-36(in Chinese with English abstract). http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=syktykf201401003 [7] Jia, C.Z., Zheng, M., Zhang, Y.F., 2012.Unconventional Hydrocarbon Resources in China and the Prospect of Exploration and Development.Petroleum Exploration and Development, 39(2):129-136(in Chinese with English abstract). http://www.jstor.org/stable/3724534 [8] Jiang, Z.X., Liang, C., Wu, J., et al., 2013.Several Issues in Sedmentological Studies on Hydrocarbon-Bearing Fine-Grained Sedimentary Rocks.Acta Petrolei Sinica, 34(6):1031-1039(in Chinese with English abstract). http://www.syxb-cps.com.cn/EN/abstract/abstract4440.shtml [9] Jiang, Z.X., Zhang, W.Z., Liang, C., et al., 2014.Characteristics and Evaluation Elements of Shale Oil Reservoir.Acta Petrolei Sinica, 35(1):184-196(in Chinese with English abstract). http://ir.knust.edu.gh/handle/123456789/6507 [10] Jin, X.C., Shah, S.N., Roegiers, J.C., et al., 2014.Fracability Evaluation in Shale Reservoirs:An Integrated Petrophysics and Geomechanics Approach.SPE Journal, 20(3):518-526.https://doi.org/10.2118/168589-MS [11] Li, J.J., Shi, Y.L., Zhang, X.W., et al., 2014.Control Factors of Enrichment and Producibility of Shale Oil:A Case Study of Biyang Depression.Earth Science, 39(7):848-857(in Chinese with English abstract).https://doi.org/10.3799/dqkx.2014.079 http://en.cnki.com.cn/Article_en/CJFDTOTAL-DQKX201407007.htm [12] Li, Z.M., Zheng, L.J., Jiang, Q.G., et al., 2018.Simulation of Hydrocarbon Generation and Explusion for Lacustrine Organic-Rich Argillaceous Dolomite and Its Implications for Shale Oil Exploration.Earth Science, 43(2):566-576(in Chinese with English abstract).https://doi.org/10.3799/dqkx.2018.025 [13] Liu, Y.H., Zhu, X.M., Zhu, M, et al., 2014.Characteristics of Tight Oil Reservoirs of the Permian Fengcheng Formation in Wu-Xia Area, Junggar Basin.Lithologic Reservoirs, 26(4):66-72(in Chinese with English abstract). http://en.cnki.com.cn/Article_en/CJFDTotal-YANX201404012.htm [14] Lu, J.M., Michler, P.J., Choi, W., et al., 2017.Geochemical Interactions of Shale and Brine in Autoclave Experiments:Understanding Mineral Reactions during Hydraulic Fracturing of Marcellus and Eagle Ford Shales.AAPG Bulletin, 101(10):1567-1597. doi: 10.1306/11101616026 [15] Ma, X.H., Xie, J., 2018.The Progress and Prospects of Shale Gas Exploration and Development in Southern Sichuan Basin, SW China.Petroleum Exploration and Development, 45(1):161-169(in Chinese with English abstract). http://www.scientific.net/AMR.962-965.600 [16] Nordeng, S.H., 2009.The Bakken Petroleum System:An Example of a Continuous Petroleum Accumulation.DMR Newsletter, 36(1):21-24. https://www.dmr.nd.gov/ndgs/documents/newsletter/2009Winter/PDF/BakkenPetroleum.pdf [17] Pu, X.G., Zhou, L.H., Han, W.Z., et al., 2016.Geologic Features of Fine-Grained Facies Sedimentation and Tight Oil Exploration:A Case from the Second Member of Paleogene Kongdian Formation of Cangdong Sag, Bohai Bay Basin.Petroleum Exploration and Development, 43(1):24-33(in Chinese with English abstract). http://www.sciencedirect.com/science/article/pii/S1876380416300039 [18] Qin, J.Z., Shen, B.J., Tao, G.L., et al., 2014.Hydrocarbon-Forming Organisms and Dynamic Evaluation of Hydrocarbon Generation Capacity in Excellent Source Rocks.Petroleum Geology and Experiment, 36(4):465-472(in Chinese with English abstract). http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=sysydz201404012 [19] Qiu, Z., Shi, Z.S., Dong, D.Z., et al., 2016.Geological Characteristics of Source Rock and Reservoir of Tight Oil and Its Accumulation Mechanism:A Case Study of Permian Lucaogou Formation in Jimusar Sag, Junggar Basin.Petroleum Exploration and Development, 43(6):928-939(in Chinese with English abstract). https://www.sciencedirect.com/science/article/pii/S1876380416301185 [20] Ren, Z.L., Li, W.H., Liang, Y., et al., 2014.Tight Oil Reservoir Formation Conditions and Main Controlling Factors of Yanchang Formation in Southeastern Ordos Basin.Oil and Gas Geology, 35(2):190-198(in Chinese with English abstract). https://www.researchgate.net/publication/286534185_Tight_oil_reservoir_formation_conditions_and_main_controlling_factors_of_Yanchang_Formation_in_southeastern_Ordos_Basin [21] Richard, M.P., Daniel, M.J., Ronald, J.H., et al., 2007.Geologic Framework of the Mississippian Barnett Shale, Barnett-Paleozoic Total Petroleum System, Bend Arch-Fort Worth Basin, Texas.AAPG Bulletin, 91(4):405-436. doi: 10.1306/10300606008 [22] Rickman, R., Mullen, M.J., Petre, J.E., et al., 2008.A Practical Use of Shale Petrophysics for Simulation Design Optimization: All Shale Plays are not Clones of the Barnett Shale.SPE Annual Technical Conference and Exhibition, Denver. https://wenku.baidu.com/view/a7a94e1afad6195f312ba660.html [23] Sun, S.Y., Liu, H.M., Cao, Y.C., et al., 2017.Milankovitch Cycle of Lacustrine Deepwater Fine-Grained Sedimentary Rocks and Its Significance to Shale Oil:A Case Study of the Upper Es4 Member of Well NY1 in Dongying Sag.Journal of China University of Mining and Technology, 46(4):846-857(in Chinese with English abstract). http://d.old.wanfangdata.com.cn/Periodical/zgkydxxb201704019 [24] Tang, Y., Xing, Y., Li, L.Z., et al., 2012.Influence Factors and Evaluation Methods of the Gas Shale Fracability.Earth Science Frontiers, 19(5):356-363(in Chinese with English abstract). http://d.old.wanfangdata.com.cn/Periodical/dxqy201205035 [25] Wang, W.G., Lin, C.Y., Zheng, M., et al., 2018.Enrichment Patterns and Resources Prospects of Tight Oil and Shale Oil:A Case Study of the Second Member of Kongdian Formation in the Cangdong Sag, Huanghua Depression.Journal of China University of Mining and Technology, 47(2):332-344(in Chinese with English abstract). [26] Yao, Y., Wang, G., Li, L., et al., 2017.The Reservoir Heterogeneity Characteristics and Affecting Factors of Tight Lacustrine Dolomite Reservoirs.Earth Science, 42(12):2327-2335(in Chinese with English abstract).https://doi.org/10.3799/dqkx.2017.145 [27] Yuan, X.J., Lin, S.H., Liu, Q., et al., 2015.Lacustrine Fine-Grained Sedimentary Features and Organicrich Shale Distribution Pattern:A Case Study of Chang 7 Member of Triassic Yanchang Formation in Ordos Basin, NW China.Petroleum Exploration and Development, 42(1):34-43(in Chinese with English abstract). https://www.sciencedirect.com/science/article/pii/S1876380415600040 [28] Zhang, X., Zhuang, X.G., Tu, Q.J., et al., 2018.Depositional Process and Mechanism of Orgainic Matter Accumulation of Lucaogou Shale in Southern Junggar Basin, Norhwest China.Earth Science, 43(2):538-550(in Chinese with English abstract).https://doi.org/10.3799/dqkx.2017.603 [29] Zhang, Y., Chen, S.Y., Meng, Q.A., et al., 2015.The Discovery of Analcite in Fine-Grained Sedimentary Rocks of the Second Member of Kongdian Formation in Cangdong Sag, HuanghuaDepression:Implications for Early Digenetic Environment.China Petroleum Exploration, 20(4):37-43(in Chinese with English abstract). http://www.cped.cn/EN/Y2015/V20/I4/37 [30] Zhou, L.H., Pu, X.G., Deng, Y., et al., 2016.Several Issues in Studies on Fine-Grained Sedimentary Rocks.Lithologic Reservoirs, 28(1):6-15(in Chinese with English abstract). http://www.en.cnki.com.cn/Article_en/CJFDTOTAL-YANX201601004.htm [31] 陈长伟, 薛林福, 徐兴科, 等, 2007.黄骅坳陷孔南地区孔二段湖盆结构恢复.沉积学报, 25(4):511-517. doi: 10.3969/j.issn.1000-0550.2007.04.004 [32] 陈世加, 张焕旭, 路俊刚, 等, 2015.四川盆地中部侏罗系大安寨段致密油富集高产控制因素.石油勘探与开发, 42(2):186-193. http://d.old.wanfangdata.com.cn/Periodical/syktykf201502007 [33] 陈世悦, 张顺, 刘惠民, 等, 2017.湖相深水细粒物质的混合沉积作用探讨.古地理学报, 19(2):271-284. http://d.old.wanfangdata.com.cn/Periodical/gdlxb201702007 [34] 董清源, 刘小平, 李洪香, 等, 2013.黄骅坳陷孔南地区孔二段页岩油藏形成条件分析.天然气地球科学, 24(1):188-198. http://d.old.wanfangdata.com.cn/Periodical/trqdqkx201301027 [35] 杜金虎, 何海清, 杨涛, 等, 2014.中国致密油勘探进展及面临的挑战.中国石油勘探, 19(1):1-9. doi: 10.3969/j.issn.1672-7703.2014.01.001 [36] 郭彤楼, 张汉荣, 2014.四川盆地焦石坝页岩气田形成与富集高产模式.石油勘探与开发, 41(1):28-36. http://d.old.wanfangdata.com.cn/Periodical/syktykf201401003 [37] 贾承造, 郑民, 张永峰, 2012.中国非常规油气资源与勘探开发前景.石油勘探与开发, 39(2):129-136. http://d.old.wanfangdata.com.cn/Periodical/syktykf201202001 [38] 姜在兴, 梁超, 吴靖, 等, 2013.含油气细粒沉积岩研究的几个问题.石油学报, 34(6):1031-1039. http://d.old.wanfangdata.com.cn/Periodical/syxb201306001 [39] 姜在兴, 张文昭, 梁超, 等, 2014.页岩油储层基本特征及评价要素.石油学报, 35(1):184-196. http://d.old.wanfangdata.com.cn/Periodical/syxb201401029 [40] 李吉君, 史颖琳, 章新文, 等, 2014.页岩油富集可采主控因素分析:以泌阳凹陷为例.地球科学, 39(7):848-857.https://doi.org/10.3799/dqkx.2014.079 http://earth-science.net/WebPage/Article.aspx?id=2888 [41] 李志明, 郑伦举, 蒋启贵, 等, 2018.湖相富有机质泥质白云岩生排烃模拟及其对页岩油勘探的启示.地球科学, 43(2):566-576.https://doi.org/10.3799/dqkx.2018.025 http://earth-science.net/WebPage/Article.aspx?id=3737 [42] 刘英辉, 朱筱敏, 朱茂, 等, 2014.准噶尔盆地乌-夏地区二叠系风城组致密油储层特征.岩性油气藏, 26(4):66-72. doi: 10.3969/j.issn.1673-8926.2014.04.010 [43] 马新华, 谢军, 2018.川南地区页岩气勘探开发进展及发展前景.石油勘探与开发, 45(1):161-169. http://d.old.wanfangdata.com.cn/Periodical/syktykf201801018 [44] 蒲秀刚, 周立宏, 韩文中, 等, 2016.细粒相沉积地质特征与致密油勘探——以渤海湾盆地沧东凹陷孔店组二段为例.石油勘探与开发, 43(1):24-33. http://www.cqvip.com/QK/90664X/201601/667742811.html [45] 秦建中, 申宝剑, 陶国亮, 等, 2014.优质烃源岩成烃生物与生烃能力动态评价.石油实验地质, 36(4):465-472. http://d.old.wanfangdata.com.cn/Periodical/sysydz201404012 [46] 邱振, 施振生, 董大忠, 等, 2016.致密油源储特征与聚集机理——以准噶尔盆地吉木萨尔凹陷二叠系芦草沟组为例.石油勘探与开发, 43(6):928-939. http://www.cnki.com.cn/Article/CJFDTOTAL-SKYK201606010.htm [47] 任战利, 李文厚, 梁宇, 等, 2014.鄂尔多斯盆地东南部延长组致密油成藏条件及主控因素.石油与天然气地质, 35(2):190-198. http://d.old.wanfangdata.com.cn/Periodical/syytrqdz201402004 [48] 孙善勇, 刘惠民, 操应长, 等, 2017.湖相深水细粒沉积岩米兰科维奇旋回及其页岩油勘探意义-以东营凹陷牛页1井沙四上亚段为例.中国矿业大学学报, 46(4):846-857. http://d.wanfangdata.com.cn/Periodical/zgkydxxb201704019 [49] 唐颖, 邢云, 李乐忠, 等, 2012.页岩储层可压裂性影响因素及评价方法.地学前缘, 19(5):356-363. http://d.old.wanfangdata.com.cn/Periodical/dxqy201205035 [50] 王文广, 林承焰, 郑民, 等, 2018.致密油/页岩油富集模式及资源潜力——以黄骅坳陷沧东凹陷孔二段为例.中国矿业大学学报, 47(2):332-344. http://www.cnki.com.cn/Article/CJFDTOTAL-ZGKD201802014.htm [51] 姚悦, 王刚, 李乐, 等, 2017.湖相致密白云岩不均一油藏特征及主控因素.地球科学, 42(12):2327-2335.https://doi.org/10.3799/dqkx.2017.145 http://earth-science.net/WebPage/Article.aspx?id=3695 [52] 袁选俊, 林森虎, 刘群, 等, 2015.湖盆细粒沉积特征与富有机质页岩分布模式:以鄂尔多斯盆地延长组长7油层组为例.石油勘探与开发, 42(1):34-43. http://d.old.wanfangdata.com.cn/Periodical/syktykf201501004 [53] 张逊, 庄新国, 涂其军, 等, 2018.准噶尔盆地南缘芦草沟组页岩的沉积过程及有机质富集机理.地球科学, 43(2):538-550.https://doi.org/10.3799/dqkx.2017.603 http://earth-science.net/WebPage/Article.aspx?id=3739 [54] 张跃, 陈世悦, 孟庆爱, 等, 2015.黄骅坳陷沧东凹陷孔二段细粒沉积岩中方沸石的发现及其地质意义.中国石油勘探, 20(4):37-43. doi: 10.3969/j.issn.1672-7703.2015.04.004 [55] 周立宏, 蒲秀刚, 邓远, 等, 2016.细粒沉积岩研究中几个值得关注的问题.岩性油气藏, 28(1):6-15. doi: 10.3969/j.issn.1673-8926.2016.01.002 -
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