Depositional combination of carbonate grain banks of the Lower Cambrian Longwangmiao Formation in Sichuan Basin and its control on reservoirs
Yang Wei-Qiang1,2, Liu Zheng1,2, Chen Hao-Ru3, Lan Cai-Jun1,2, Xu Zhe-Hang1,2, Lu Chao-Jin1,2, Zou Hua-Yao1,2
1 State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing）, Beijing 102249, China; 2 College of Geosciences, China University of Petroleum（Beijing）, Beijing 102249, China; 3 Faculty of Earth Resources, China University of Geosciences(Wuhan), Wuhan 430074, China
Abstract：Rock types, sedimentary subfacies and grain bank properties of the Longwangmiao Formation are studied in detail by outcrop, drilling and logging data, core, thin section and physical property of the Longwangmiao Formation in the Sichuan Basin. The characteristics, development and distribution of grain bank depositional combinations of the Longwangmiao Formation in Sichuan Basin and their control on reservoir development are discussed. The results show that: （1）four main rock types can be identified in the Longwangmiao Formation in Sichuan Basin. Vertically, three upward shallowing depositional combinations associated with carbonate grain bank can be identified: multi-stage vertical overlapping of grain banks, grain bank-tidal flat（mixed tidal flat）, interbank-grain bank（-tidal flat）; (2）the distribution of depositional combinations of grain banks is controlled by paleogeomorphy and sea level fluctuation;and the horizontal distribution is mainly controlled by paleogeomorphy, the vertical overlapping of multi-stage grain banks is mainly developed in the central Sichuan Basin, grain bank-tidal flat（mixed tidal flat）mainly develop in northern and southwestern Sichuan Basin, and interbank-grain bank（-tidal flat）mainly develop in the eastern and southeastern Sichuan Basin;vertically, they are mainly controlled by sea level changes, and have close relationship with their locations in the sequence stratigraphy, and interbank-grain bank（-tidal flat）mostly develop in the middle and lower parts of the sequence, multi-stage vertical overlapping of grain banks and grain bank-tidal flat（mixed tidal flat）develop in the upper part of the sequence; (3）multi-stage vertical overlapping of grain banks is the most favorable for reservoir development, followed by grain bank-tidal flat（mixed tidal flat）combination, and interbank-grain bank（-tidal flat）combination has the poor reservoir physical properties.
Yang Wei-Qiang,Liu Zheng,Chen Hao-Ru et al. Depositional combination of carbonate grain banks of the Lower Cambrian Longwangmiao Formation in Sichuan Basin and its control on reservoirs[J]. JOPC, 2020, 22(2): 251-265.
[1] 陈宗清. 2013. 论四川盆地下古生界5次地壳运动与油气勘探. 中国石油勘探, 18(5): 15-23. [Chen Z Q.2013. On Five crustal movements and petroleum exploration in Lower Paleozoic, Sichuan Basin. China Petroleum Exploration, 18(5): 15-23] [2] 杜金虎, 张宝民, 汪泽成, 邹才能, 徐春春, 沈平, 张健, 张静, 周慧, 姜华, 文龙, 单秀琴, 刘静江. 2016. 四川盆地下寒武统龙王庙组碳酸盐缓坡双颗粒滩沉积模式及储层成因. 天然气工业, 36(6): 1-10. [Du J H, Zhang B M, Wang Z C, Zou C N, Xu C C, Shen P, Zhang J, Zhang J, Zhou H, Jiang H, Wen L, Shan X Q, Liu J J.2016. Sedimentary model and reservoir genesis of dual grain banks at the Lower Cambrian Longwangmiao Fm carbonate ramp in the Sichuan Basin. Natural Gas Industry, 36(6): 1-10] [3] 代林呈, 朱祥, 李毕松, 王兴志, 曾德铭. 2017. 川东地区龙王庙组颗粒滩发育特征及分布规律. 地质科技情报, 36(6): 181-189. [Dai L C, Zhu X, Li B S, Wang X Z, Zeng D M.2017. Characteristics and distribution of grain bank of the Lower Cambrian Longwangmiao Formation in Eastern Sichuan Basin. Geological Science and Technology Information, 36(6): 181-189] [4] 郭福生, 严兆彬, 杜杨松. 2003. 混合沉积、混积岩和混积层系的讨论. 地学前缘, 10(3): 312-314. [Guo F S, Yan Z B, Du Y S.2003. Discussion on mixing sedimentation, laminae, and hybridites. Geoscience Frontiers, 10(3): 312-314] [5] 金民东, 曾伟, 谭秀成, 李凌, 李宗银, 罗冰, 张静蕾, 刘吉伟. 2014. 四川磨溪—高石梯地区龙王庙组滩控岩溶型储集层特征及控制因素. 石油勘探与开发, 41(6): 650-660 [Jin M D, Zeng W, Tan X C, Li L, Li Z Y, Luo B, Zhang J L, Liu J W.2014. Characteristics and controlling factors of beach-controlled karst reservoirs in Cambrian Longwangmiao Formation, Moxi-Gaoshiti area, Sichuan Basin, NW China. Petroleum Exploration and Development, 41(6): 650-660] [6] 金民东, 谭秀成, 李凌, 曾伟, 连承波, 罗冰, 山述娇, 周涛. 2015. 四川盆地磨溪—高石梯地区下寒武统龙王庙组颗粒滩特征及分布规律. 古地理学报, 17(3): 347-357. [Jin M D, Tan X C, Li L, Zeng W, Lian C B, Luo B, Shan S J, Zhou T.2015. Characteristics and distribution of grain bank of the Lower Cambrian Longwangmiao Formation in Moxi-Gaoshiti area, Sichuan Basin. Journal of Palaeogeography(Chinese Edition), 17(3): 347-357] [7] 李皎, 何登发. 2014. 四川盆地及邻区寒武纪古地理与构造-沉积环境演化. 古地理学报, 16(4): 441-460. [Li J, He D F.2014. Palaeogeography and tectonic-depositional environment evolution of the Cambrian in Sichuan Basin and adjacent areas. Journal of Palaeogeography(Chinese Edition), 16(4): 441-460] [8] 卢朝进, 刘震, 田海芹, 刘明洁, 林娟华, 王媛, 杨晓光. 2018. 受多级海平面控制的早成岩期岩溶发育模式: 以鄂西渝东—湘鄂西地区石龙洞组为例. 中国矿业大学学报, 47(5): 1055-1067. [Lu C J, Liu Z, Tian H Q, Liu M J, Lin J H, Wang Y, Yang X G.2018. An eogenetic paleokarst model controlled by multi-level sea-level: A case study of Shilongdong Formation in Lower Cambrian, from the west Hubei and the east Chongqing to the west Hunan and Hubei, SW China. Journal of China University of Mining & Technology, 47(5): 1055-1067] [9] 刘泠杉, 胡明毅, 高达, 王頔, 汪涛, 邢梦妍. 2016. 四川磨溪—高石梯地区龙王庙组层序划分及储层预测. 大庆石油地质与开发, 35(5): 42-47. [Liu L S, Hu M Y, Gao D, Wang D, Wang T, Xing M Y.2016. Sequence strata and reservoir prediction for Longwangmiao Formation in Sichuan Moxi-Gaoshiti area. Petroleum Geology & Oilfield Development in Daqing, 35(5): 42-47] [10] 刘树根, 宋金民, 赵异华, 钟勇, 宋林珂, 田艳红, 梁锋, 尹柯惟, 李俊良. 2014. 四川盆地龙王庙组优质储集层形成与分布的主控因素. 成都理工大学学报(自然科学版), 41(6): 657-670. [Liu S G, Song J M, Zhao Y H, Zhong Y, Song L K, Tian Y H, Liang F, Yin K W, Li J L.2014. Controlling factors of formation and distribution of Lower Cambrian Longwangmiao Formation high-quality reservoir in Sichuan Basin, China. Journal of Chengdu University of Technology(Since &Technology Edition), 41(6): 657-670] [11] 马永生. 2007. 四川盆地普光超大型气田的形成机制. 石油学报, 28(2): 9-14, 21. [Ma Y S.2007. Generation mechanism of Puguang Gas Field in Sichuan Basin. Acta Petrolei Sinica, 28(2): 9-14, 21] [12] 马腾, 谭秀成, 李凌, 曾伟, 金民东, 罗冰, 洪海涛, 杨雨. 2015. 四川盆地及邻区下寒武统龙王庙组颗粒滩沉积特征与空间分布. 古地理学报, 17(2): 213-228. [Ma T, Tan X C, Li L, Zeng W, Jin M D, Luo B, Hong H T, Yang Y.2015. Sedimentary characteristics and distribution of grain grain banks in the Lower Cambrian Longwangmiao Formation of Sichuan Basin and its adjacent areas. Journal of Palaeogeography(Chinese Edition), 17(2): 213-228] [13] 彭善池. 2006. 全球寒武系年代地层新划分. 中国科学院院刊, 21(4): 325-328. [Peng S C.2006. New global subdivision on Cambrian Chronostratigraphy. Bulletin of Chinese Academy of Sciences, 21(4): 325-328] [14] 任影, 钟大康, 高崇龙, 孙海涛, 孟昊, 胡小林, 姜振昌, 王爱. 2015. 川东及其周缘地区下寒武统龙王庙组储集层特征与控制因素. 古地理学报, 17(6): 829-840. [Ren Y, Zhong D K, Gao C L, Sun H T, Meng H, Hu X L, Jiang Z C, Wang A.2015.haracteristics and controlling factors of the Lower Cambrian Longwangmiao Formation reservoirs in eastern Sichuan Basin and its adjacent areas. Journal of Palaeogeography(Chinese Edition), 17(6): 829-840] [15] 沈安江, 陈娅娜, 潘立银, 王龙, 佘敏. 2017. 四川盆地下寒武统龙王庙组沉积相与储层分布预测研究. 天然气地球科学, 28(8): 1176-1190. [Shen A J, Yao G S, Pan L Y, Wang L, She M.2017. The facies and porosity origin of reservoirs: Case studies from Longwangmiao Formation of Cambrian, Sichuan Basin, and their implications to reservoir prediction. Natural Gas Geoscience, 28(8): 1176-1190] [16] 田艳红, 刘树根, 赵异华, 孙玮, 宋林珂, 宋金民, 梁锋, 尹柯惟, 李俊良, 王晨霞, 吴娟, 龙翼, 李泽奇. 2015. 川中地区下寒武统龙王庙组优质储层形成机理. 桂林理工大学学报, 35(2): 217-226. [Tian Y H, Liu S G, Zhao Y H, Sun W, Song L K, Song J M, Liang F, Yin K W, Li J L, Wang C X, Wu J, Long Y, Li Z Q.2015. Formation mechanism of high quality Longwangmiao Formation reservoir from central Sichuan basin. Journal of Guilin University of Technology, 35(2): 217-226] [17] 王頔, 胡明毅, 高达, 邢梦妍, 汪涛, 刘泠杉, 王静怡. 2017. 川中磨溪—高石梯地区下寒武统龙王庙组层序格架内滩体的发育演化特征及对储集层的控制. 海相油气地质, 22(1): 47-54. [Wang D, Hu M Y, Gao D, Xing M Y, Wang T, Liu L S, Wang J Y.2017. Development and evolution of inner-platform shoal with control on the reservoir in a sequence framework of Lower Cambrian Longwangmiao Formation, Moxi-Gaoshiti area, central Sichuan Basin. Marine Origin Petroleum Geology, 22(1): 47-54] [18] 魏国齐, 杜金虎, 徐春春, 邹才能, 杨威, 沈平, 谢增业, 张健. 2015. 四川盆地高石梯—磨溪地区震旦系—寒武系大型气藏征与聚集模式. 石油学报, 36(1): 1-12. [Wei G Q, Du J H, Xu C C, Zou C N, Yang W, Shen P, Xie Z Y, Zhang J.2015. Characteristics and accumulation modes of large gas reservoirs in Sinian-Cambrian of Gaoshiti-Moxi region, Sichuan Basin. Acta Petrolei Sinica, 36(1): 1-12] [19] 魏魁生, 徐怀大, 叶淑芬. 1997. 四川盆地层序地层特征. 石油与天然气地质, 18(2): 71-77. [Wei K S, Xu H D, Ye S F.1997. Sequence Stratigraphic Characteristics of Sichuan Basin. Oil & Gas Geology, 18(2): 71-77] [20] 邢梦妍, 胡明毅, 高达, 王頔, 王静怡, 刘泠杉. 2017. 高磨地区龙王庙组滩相储集层特征及主控因素. 桂林理工大学学报, 37(1): 3-46. [Xing M Y, Hu M Y, Gao D, Wang D, Liu L S.2017. Characteristics and main controlling factors of Lower Cambrian Longwangmiao Formation beach-facies reservoirs in Gaoshiti-Moxi area, central Sichuan Basin. Journal of Guilin University of Technology, 37(1): 37-46] [21] 谢武仁, 杨威, 李熙喆, 魏国齐, 马石玉, 文龙, 郭振华. 2018. 四川盆地川中地区寒武系龙王庙组颗粒滩储集层成因及其影响. 天然气地球科学, 29(12): 1715-1726. [Xie W R, Yang W, Li X Z, Wei G Q, Ma S Y, Wen L, Guo Z H.2018. The origin and influence of the grain beach reservoirs of Cambrian Longwangmiao Formation in Central Sichuan area, Sichuan Basin. Natural Gas Geoscience, 29(12): 1715-1726] [22] 杨雪飞, 王兴志, 代林呈, 杨跃明, 谢继荣, 罗文军. 2015. 川中地区下寒武统龙王庙组沉积相特征. 岩性油气藏, 27(1): 95-101. [Yang X F, Wang X Z, Dai L C, Yang Y M, Xie J R, Luo W J.2015. Sedimentary features of the Lower Cambrian Longwangmiao Formation in the central Sichuan Basin. Lithologic Reservoirs, 27(1): 95-101] [23] 杨雪飞, 王兴志, 唐浩, 姜楠, 杨跃明, 谢继荣, 罗文军. 2015. 四川盆地中部磨溪地区龙王庙组沉积微相研究. 沉积学报, 33(5): 972-982. [Yang X F, Wang X Z, Tang H, Jiang N, Yang Y M, Xie J R, Luo W J.2015. Research sedimentary microfacies of the Longwangmiao Formation in Moxi area, Central Sichuan Basin. Acta Sedimentologica Sinica, 33(5): 972-982] [24] 姚根顺, 周进高, 邹伟宏, 张建勇, 潘立银, 郝毅, 王芳, 谷明峰, 董庸, 郑剑锋, 倪超, 辛勇光. 2013. 四川盆地下寒武统龙王庙组颗粒滩特征及分布规律. 海相油气地质, 18(4): 1-8. [Yao G S, Zhou J G, Zou W H, Zhang J Y, Pan L Y, Hao Y, Wang F, Gu M F, Dong Y, Zheng J F, Ni C, Xin Y G.2013. Characteristics and distribution rule of Lower Cambrian Longwangmiao grain beach in Sichuan Basin. Marine Origin Petroleum Geology, 18(4): 1-8] [25] 张建勇, 罗文军, 周进高, 王勇, 唐松, 罗冰, 潘立银, 倪超, 谷明峰. 2015. 四川盆地安岳特大型气田下寒武统龙王庙组优质储层形成的主控因素. 天然气地球科学, 26(11): 2063-2074. [Zhang J Y, Luo W J, Zhou J G, Wang Y, Tang S, Luo B, Pan L Y, Ni C, Gu M F.2015. Main origins of high quality reservoir of lower Cambrian Longwangmiao Formation in the gaint Anyue Gasfield, Sichuan Basin, SW China. Natural Gas Geoscience, 26(11): 2063-2074] [26] 张学丰, 蔡忠贤, 胡文宣, 李林. 2009. 应用Adobe Photoshop定量分析岩石结构. 沉积学报, 27(4): 667-673. [Zhang X F, Cai Z X, Hu W X, Li L.2009. Using Adobe Photoshop to Quantify Rock Textures. Acta Sedimentologica Sinica, 27(4): 667-673] [27] 周进高, 房超, 季汉成, 张建勇, 赵菲. 2014. 四川盆地下寒武统龙王庙组颗粒滩发育规律. 天然气工业, 34(8): 27-36. [Zhou J G, Fang C, Ji H C, Zhang J Y, Zhao F.2014. A development rule of Lower Cambrian Longwangmiao grain beaches in the Sichuan Basin. Natural Gas Industry, 34(8): 27-36] [28] 周进高, 徐春春, 姚根顺, 杨光, 张建勇, 郝毅, 王芳, 潘立银, 谷明峰. 2015. 四川盆地下寒武统龙王庙组储集层形成与演化. 石油勘探与开发, 42(2): 158-166. [Zhou J G, Xu C C, Yao G S, Yang G, Zhang J Y, Hao Y, Wang F, Pan L Y, Gu M F.2015. Genesis and evolution of Lower Cambrian Longwangmiao Formation reservoirs, Sichuan Basin. Petroleum Exploration and Development, 42(2): 158-166] [29] Amel Ha, Jafarian A, Husinec A, Koeshidayatullah A, Swennen R.2015. Microfacies, depositional environment and diagenetic evolution controls on the reservoir quality of the Permian Upper Dalan Formation, Kish Gas Field, Zagros Basin. Marine and Petroleum Geology, 67: 57-71. [30] Burchette T P, Wright V P.1992. Carbonate ramp depositional systems. Sedimentary Geology, 79(1-4): 3-57. [31] Khalifa M A.2005. Lithofacies, diagenesis and cyclicity of the‘Lower Member' of the Khuff Formation(Late Permian), Al Qasim Province, Saudi Arabia. Journal of Asian Earth Sciences, 25(5): 719-734. [32] Mount J F.1984. Mixing of siliciclastics and carbonate sediments in shallow shelf environments. Geology, 12(7): 432-435. [33] Rosales I, Pomar L, Al-Awwad S F.2018. Microfacies, diagenesis and oil emplacement of the Upper Jurassic Arab-D carbonate reservoir in an oil field in central Saudi Arabia(Khurais Complex). Marine and Petroleum Geology, 96: 551-576. [34] Sadooni F N.2005. The nature and origin of Upper Cretaceous basin-margin rudist buildups of the Mesopotamian Basin, southern Iraq, with consideration of possible hydrocarbon stratigraphic entrapment. Cretaceous Research, 26(2): 213-224. [35] Tavakoli V, Rahimpour-Bonab H, Esrafili-Dizaji B.2011. Diagenetic controlled reservoir quality of South Pars gas field, an integrated approach. Comptes Rendus-Geoscience, 343(1): 35-71.
