四川盆地中三叠统雷口坡组沉积特征及有利储集相带

doi:10.11743/ogg20180307

Abstract

Abstract: In order to look for new fairways for future gas exploration in the Sichuan Basin,we worked on revealling the sedimentary characteristics and distribution of favorable reservoir facies in the Middle Triassic Leikoupo Formation.The study took marine carbonate sequence stratigraphy and reservoir sedimentology theory as guidance.Based on the markers in logging data,from cores,and sequence boundaries including unconformity,we conducted the sequence stratigraphy division and identification of sedimentary facies.Then spatial boundaries of sedimentary facies in each sequence are delineated,and the lithofacies paleogeographic map of each system tract in every sequence are compiled to predict favorable reservoir facies distribution.The results show that the Middle Triassic Leikoupo Formation in the Sichuan Basin develops a set of shallow water carbonate platform sedimentary system,including 4 major sedimentary facies,namely,restricted platform,evaporitic platform,platform edge and open platform.In general,the formation appears to be higher in the east and plunges to the west,with significant uplift and sag within the platform driven by early Indosinian tectonic movement.Due to basement uplift,some of the upper sections of the formation are eroded by long-term exposure,companied by development of a weathering crust.Furthermore,based on sedimentary facies recognition and sequence interface markers,we divided the Middle Triassic Leikoupo Formation into 4 third-tier sequences and 8 system tracts:the paleo-uplift in the central basin and its surrounding dolomite flat,and the platform edge bank of the northwestern Mianzhu and Jiange uplifts,are favorable reservoir facies because of their better reservoir properties and effective coupling of reservoir and caprock.Therefore,we conclude that these fairways are the most favorable areas for future exploration in the Middle Triassic Leikoupo Formation in the Sichuan Basin.

Key words: dolomite flat, platform edge bank, lithofacies paleogeography, sequence stratigraphy, Leikoupo Formation, Middle Triassic, Sichuan Basin

CLC Number:

TE121.3

Sun Chunyan, Hu Mingyi, Hu Zhonggui, Deng Qingjie. Sedimentary characteristics and favorable reservoir facies distribution of the Middle Triassic Leikoupo Formation,Sichuan Basin[J]. Oil & Gas Geology, 2018, 39(3): 498-512.

References

[1] 董兆雄,邓明.川西地区中三叠统雷口坡组岩相古地理[J].矿物岩石,1994,14(4):46-63. Dong Zhaoxiong,Deng Ming.Lithofacies and paleogeographic analysis of Leikoupo Formation middle Triassic in western Sichuan[J].Journal of Mineralogy and Petrology.1994,14(4):46-63.
[2] 刘志丽,童金南.中国南方中三叠世地层及沉积古地理分异[J].沉积学报,2001,19(3):327-332. Liu Zhili,Tong Jinnan.The middle triassic stratigraphy and sedimentary paleogeography of south China[J].Acta Sedimentologica Sinica,2001,19(3):327-332.
[3] 何镜宇,孟祥化.沉积岩和沉积相模式及建造[M].北京:地质出版社,1987:281-282. HeJingyu,Meng Xianghua.Sedimentary rock and sedimentary facies and construction[M].Beijing:Geological Press,1987:281-282.
[4] 李凌,谭秀成,周素彦,等.四川盆地雷口坡组层序岩相古地理[J].西南石油大学学报:自然科学版,2012,34(4):13-22. Li Ling,Tan Xiucheng,Zhou Suyan,et al.Sequence lithofacies paleography of leikoupo formation,sichuan basin[J].Journal of Southwest Petroleum University:Science & Technology Edition,2012,34(4):13-22.
[5] 辛勇光,周进高,倪超,等.四川盆地中三叠世雷口坡期障壁型碳酸盐岩台地沉积特征及有利储集相带分布[J].海相油气地质,2013,18(2):1-7. Xin Yongguang,Zhou Jingao,Ni Chao,et al.Sedimentary facies features and favorable lithofacies distribution of Middle Triassic Leikoupo barriered carbonate platform in Sichuan Basin[J].Marine Origin Petroleum Geology,2013,18(2):1-7.
[6] 吕玉珍,倪超,张建勇,等.四川盆地中三叠统雷口坡组有利沉积相带及岩相古地理特征[J].海相油气地质,2013,18(1):26-32. Lv Yuzhen,Ni Chao,Zhang Jianyong,et al.Favorable sedimentary facies zones and lithofacies palaeogeography of Middle Triassic Leikoupo Formation in Sichuan Basin[J].Marine Origin Petroleum Geology,2013,18(1):26-32.
[7] 谭秀成,李凌,刘宏,等.四川盆地中三叠统雷口坡组碳酸盐台地巨型浅滩化研究[J].海相油气地质,2014,44(3):457-471. Tan Xiucheng,Li Ling,Liu Hong,et al.Mega-shoaling in carbonate platform of the Middle Triassic Leikoupo Formation,Sichuan Basin,Southwest China.Science China:Earth Sciences,44(3):457-471.
[8] 周进高,辛勇光,谷明峰,等.四川盆地中三叠统雷口坡组天然气勘探方向[J].天然气工业,2010,30(12):16-19. Zhou Jingao,Xin Yongguang,Gu Mingfcng,et al.Direction of gas exploration in the Middle Triassic Leikoupo Formation of the Sichuan Basin[J].Natural Gas Industry,2010,30(12):16-19.
[9] 孙玮,刘树根,秦川,等.川中磨溪与龙女寺雷口坡组构造特征及油气成藏差异性[J].成都理工大学学报:自然科学版,2009,36(6):654-661. Sun Wei,Liu Shugen,Qin Chuan,et al.Differences of structure and hydrocarbon accumulation characteristics of middle triassic Leikoupo formation between Moxi structure and Longnvsi structure in central Sichuan,China[J].Journal of Chengdu University of Technology:Science & Technology Edition,2009,36(6):654-661.
[10] 黄东,张健,杨光,等.四川盆地中三叠统雷口坡组地层划分探讨[J].西南石油大学学报:自然科学版,2011,33(3):89-95. Huang Dong,Zhang Jian,Yang Guang,et al.The discussion of stratum division and stratum for the Leikoupo formation of Middle Triassic in Sichuan Basin[J].Journal of Southwest Petroleum University:Science &Technology Edition,2011,33(3):89-95.
[11] 周彦,谭秀成,刘宏,等.磨溪气田嘉一段鲡粒灰岩储层特征及成因机制[J].西南石油大学学报:自然科学版,2007,29(4):30-33. Zhou Yan,Tan Xiu,cheng,Liu Hong,et al.Oolitic limestone reservoir c;haracteristics and its genetic mechanism of Jia-2 member in Moxi gas field[J].Journal of southwest petroleum university:Science & Technology Edition,2007,29(4):30-33.
[12] 胡明毅,魏国齐,李思田,等.四川盆地嘉陵江组层序-岩相古地理特征和储层预测[J].沉积学报,2010,28(6):1145-1152. Hu Mingyi,Wei Guoqi,Li Sitian,et al.Characteristics of sequence-based lithofacies and paleogeography and Reservoir Prediction of the Jialingjiang Formation in Sichuan Basin[J].Acta Sedimentologica Sinica,2010,28(6):1145-1152.
[13] 沈安江,周进高,辛勇光.四川盆地雷口坡组白云岩储层类型及成因[J].海相油气地质,2008,13(4):19-28. Shen Anjiang,Zhou Jingao,Xin Yongguang.Origin of Triassic Leikoupo dolomite reservoirs in Sichuan Basin[J].Marine Origin Petroleum Geology,2008,13(4):19-28.
[14] 曾德铭,王兴志,石新,等.四川盆地西北部中三叠统雷口坡组滩体及储集性[J].沉积学报,2010,28(1):42-49. Zeng Deming,Wang Xingzhi,Shi Xin,et al.Characteristic and reservoir property of the Leikoupo Formation of Middle Triassic in northwestern Sichuan Basin[J].Acta Scdimcntologica Sinica,2010,28(1):42-49.
[15] 林良彪,陈洪德,张长俊.四川盆地西北部中三叠世雷口坡期岩相古地理[J].沉积与特提斯地质,2007,27(3):51-58. Lin Liangbiao,Chen Hongde,Zhang Changjun.Sedimentary facies and palaeogeography of northwestern Sichuan Basin during the Lei-koupoan Middle Triassic[J].Sedimentary Geology and Tethyan Geology,2007,27(3):51-58.
[16] 冯增昭,鲍志东,李尚武,等.中国南方早中三叠世岩相古地理加[M].北京:石油工业出版社,1997:105-117. Feng Zengzhao,Bao Zhidong,Li Shangwu,et al.Lithofacies 1'aleogeography of the Early and Middle Triassic in South China[M].Beijing:Petroleum Industry Press,1997:105-117.
[17] Enos P.Sawatsky L H.Pore networks in Holocene carbonate sediments[J].Journal of Sedimentary Petrology1981,51(5):961-986.
[18] 谭秀成,罗冰,李卓沛,等.川中地区磨溪气田嘉二段砂屑云岩储集层成因[J].石油勘探与开发,2011,38(3):268-273. Tan Xiucheng,Luo Bing,Li Zhuopei,et al.Jia2 member doloarenite reservoir in the Moxi gas field,middle Sichuan Basin[J].Petroleum Exploration and Develonment,2011,38(3):268-273.
[19] Mazzullo S J,Harris P M.Mesogenetic dissolution:its role in porosity developmlent in carbonate reservoir.[J].AAPG Bulletin.1992,76(5):607-620.
[20] 李凌,谭秀成,丁熊,等.四川盆地雷口坡组台内滩与台缘滩沉积特征差异及对储层的控制[J].石油学报,2011,32(1):70-76. Li Ling,Tan Xiucheng,Ding Xiong,et al.Difference in depositional characteristics between intra-platform and marginal-platform shoals in Leikoupo formation in Sic;huan Basin and its impact on reservoirs[J].Acta Petrolei Sinica.2011,32(1):70-76.

Sedimentary characteristics and favorable reservoir facies distribution of the Middle Triassic Leikoupo Formation,Sichuan Basin

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Recommended Articles

Metrics

[1]	Tongfei HUANG, Guangya ZHANG, Beiwei LUO, Zhihua YU, Lei ZHANG, Zhiliang HE, Guoping BAI, Jiquan YIN, Houqin ZHU, Jinyin YIN, Jianhuan YAO. Cretaceous prototype basins and lithofacies paleogeography in the Tethyan domain and their role in hydrocarbon accumulation [J]. Oil & Gas Geology, 2024, 45(3): 658-672.
[2]	Rui FANG, Yuqiang JIANG, Changcheng YANG, Haibo DENG, Chan JIANG, Haitao HONG, Song TANG, Yifan GU, Xun ZHU, Shasha SUN, Guangyin CAI. Occurrence states and mobility of shale oil in different lithologic assemblages in the Jurassic Lianggaoshan Formation， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(3): 752-769.
[3]	Xiao HE, Maja ZHENG, Yong LIU, Qun ZHAO, Xuewen Shi, Zhenxue Jiang, Wei WU, Ya WU, Shitan NING, Xianglu TANG, Dadong LIU. Characteristics and differential origin of Qiongzhusi Formation shale reservoirs under the “aulacogen-uplift” tectonic setting， Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 420-439.
[4]	Changbo ZHAI, Liangbiao LIN, Donghua YOU, Fengbin LIU, Siyu LIU. Sedimentary microfacies characteristics and organic matter enrichment pattern of the 1^st member of the Middle Permian Maokou Formation， southwestern Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 440-456.
[5]	Heyi ZHANG, Shuai YANG, Xihua ZHANG, Hanlin PENG, Qian LI, Cong CHEN, Zhaolong GAO, Anqing CHEN. Sedimentary microfacies and environmental evolution of the Middle Permian Maokou Formation in the eastern Sichuan Basin： A case study of the Yangjiao section in Wulong District， Chongqing， China [J]. Oil & Gas Geology, 2024, 45(2): 457-470.
[6]	Hui PAN, Yuqiang JIANG, Xun ZHU, Haibo DENG, Linke SONG, Zhanlei WANG, Miao LI, Yadong ZHOU, Linjie FENG, Yongliang YUAN, Meng WANG. Evaluation of geological sweet spots in fluvial tight sandstone gas： A case study of the first submember of the second member of the Jurassic Shaximiao Formation， central Sichuan Basin [J]. Oil & Gas Geology, 2024, 45(2): 471-485.
[7]	Baoshou ZHANG, Benjian ZHANG, Hua WANG, Jianfa CHEN, Kaixuan LIU, Shuang DOU, Xin DAI, Shuangling CHEN. The Jinqiu gas field in the Sichuan Basin： A typical helium-bearing to helium-rich gas field with the Mesozoic sedimentary rocks as helium source rocks [J]. Oil & Gas Geology, 2024, 45(1): 185-199.
[8]	Zhili ZHANG, Yanping QIAO, Shuang DOU, Kunyu LI, Yuan ZHONG, Luya WU, Baoshou ZHANG, Xin Dai, Xin JIN, Bin WANG, Jinmin SONG. Karst paleogeomorphology and reservoir control model of the 2^nd member of Dengying Formation in Penglai gas area， Sichuan Basin， China [J]. Oil & Gas Geology, 2024, 45(1): 200-214.
[9]	Guangfu WANG, Fengxia LI, Haibo WANG, Tong ZHOU, Yaxiong ZHANG, Ruyue WANG, Ning LI, Yuxin CHEN, Xiaofei XIONG. Difficulties and countermeasures for fracturing of various shale gas reservoirs in the Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1378-1392.
[10]	Zongquan HU, Ruyue WANG, Jing LU, Dongjun FENG, Yuejiao LIU, Baojian SHEN, Zhongbao LIU, Guanping WANG, Jianhua HE. Storage characteristic comparison of pores between lacustrine shales and their interbeds and differential evolutionary patterns [J]. Oil & Gas Geology, 2023, 44(6): 1393-1404.
[11]	Dongfeng HU, Zhihong WEI, Ruobing LIU, Xiangfeng WEI, Wei WANG, Qingbo WANG. Discovery of the Qijiang shale gas field in a structurally complex region on the southeastern margin of the Sichuan Basin and its implications [J]. Oil & Gas Geology, 2023, 44(6): 1418-1429.
[12]	Hongyan WANG, Shangwen ZHOU, Qun ZHAO, Zhensheng SHI, Dexun LIU, Pengfei JIAO. Enrichment characteristics， exploration and exploitation progress， and prospects of deep shale gas in the southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1430-1441.
[13]	Zhensheng SHI, Shengxian ZHAO, Tianqi ZHOU, Shasha SUN, Yuan YUAN, Chenglin ZHANG, Bo LI, Ling QI. Types and genesis of horizontal bedding of marine gas-bearing shale and its significance for shale gas： A case study of the Wufeng-Longmaxi shale in southern Sichuan Basin， China [J]. Oil & Gas Geology, 2023, 44(6): 1499-1514.
[14]	Ruikang BIAN, Chuanxiang SUN, Haikuan NIE, Zhujiang LIU, Wei DU, Pei LI, Ruyue WANG. Types， characteristics， and exploration targets of deep shale gas reservoirs in the Wufeng-Longmaxi formations， southeastern Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1515-1529.
[15]	Shuangjian LI, Zhi LI, Lei ZHANG, Yingqiang LI, Xianwu MENG, Haijun WANG. Hydrocarbon accumulation conditions and exploration targets of the Triassic subsalt ultra-deep sequences in the western Sichuan Depression， Sichuan Basin [J]. Oil & Gas Geology, 2023, 44(6): 1555-1567.