川西地区雷口坡组沉积与其顶部风化壳储层特征

doi:10.11743/ogg20130106

Abstract

Abstract:

Before the uplifting in the late Ladinian age of the Indosinian,the Leikoupo Formation of the Middle Triassic in Sichuan Basin was an evaporite platform intermittently submerged by epicontinental sea.The overall paleogeographic pattern of the platform was high in the east and low in the west.The secondary uplifts and depressions developed in the platform acted as the basement for lagoon and salinized salt lake.The depocenter of the salt lake moved with the evolution of the paleogeographic pattern to areas along Chengdu and Nanchong in central and western Sichuan Basin during the deposition of the third and fourth members of the Formation.The Sichuan sea was uplifted as a whole due to the early Indosinian movement in late ladinian age,leading to the development of a wide-spreading paleo-weathering crust at the top of the Formation.In western Sichuan Basin,the crust is mainly located at the top of the fourth member.Exposed dissolution and deep burial dissolution led to the development of fractured-vuggy reservoirs within the crust.It is observed that the development of vuggy-fractured reservoirs is one of the major factors controlling hydrocarbon accumulation.A big breakthrough of gas exploration has been made with the well Chuanke-1 at the top of the Formation in the Xiaoquan structure of western Sichuan Basin.The analysis of the genesis of weathering crust and the main controlling factors for reservoir development shows that the top of the Formation is the potential exploration targets in western Sichuan Basin.

Key words: weathering crust, sedimentary characteristics, exposed erosion, deep burial dissolution, reservoir feature, exploration potential, Leikoupo Formation, western Sichuan Basin

CLC Number:

TE121.2

Tang Yu. Characterization of the sedimentation of the Leikoupo Formation and the weathering crust reservoirs at the top of the formation in the western Sichuan Basin[J]. Oil & Gas Geology, 2013, 34(1): 42-47.

References

[1] 杨克明,许国明,刘诗荣,等.川西地区石油地质综合研究与选区评价.2010. Yang Keming,Xu Guoming,Liu Shirong,et al.Comprehensive petroleum geology study and target zone evaluation in West Sichuan basin.2010.
[2] 陈莉琼,沈昭国,侯方浩,等.四川盆地三叠纪蒸发岩盆地形成环境及白云岩储层[J].石油实验地质,2010,32,(4):335-341. Chen Liqiong,Shen Zhaoguo,Hou Fanghao,et al.Formation environment of Triassic evaporate rock basin and dolostone reservoirs in the Sichuan basin[J].Petroleum Geology & Experiment,2010,33(1):335-341.
[3] 罗小龙,汤良杰,谢大庆,等.塔里木盆地雅克拉断凸中生界底界不整合及其油气勘探意义[J].石油与天然气地质,2012,33(1):30-36. Luo Xiaolong,Tang Liangjie,Xie Daqing,et al.Mesozoic bottom boundary unconformity and its significance for hydrocarbon exploration in the Yakela faulted uplift,Tarim Basin[J].Oil & Gas Geology,2012,33(1):30-36.
[4] 陈琪,胡文瑄,李庆,等.川东北盘龙洞长兴组-飞仙关组白云岩化特征及成因[J].石油与天然气地质,2012,33(1):84-93. Chen Qi,Hu Wenxuan,Li Qing,et al.Characteristics and genesis of dolomitization in Changxing and Feixianguan Formations in Panlongdong,northeastern Sichuan Basin[J].Oil & Gas Geology,2012,33(1):84-93.
[5] 张俊,蔡镠璐,向雷,等.川东北地区飞仙关组成岩晚期白云石溶解作用[J].石油与天然气地质,2012,33(4):599-606. Zhang Jun,Cai Liulu,Xiang Lei,et al.Late diagenetic dissolution of dolomites in the Feixianguan Formation,northeastern Sichuan Basin[J].Oil & Gas Geology,2012,33(4):599-606.
[6] 王瑞,朱筱敏,陈烨菲,等.滨里海盆地肯基亚克地区中、下石炭统碳酸盐岩储层特征与成岩作用[J].石油与天然气地质,2012,33(2):225-235. Wang Rui,Zhu Xiaomin,Chen Yefei,et al.Diagenesis and reservoir characteristics of the Lower-Middle Carboniferous carbonates in Kenkyak area,Pre-Caspian Basin[J].Oil & Gas Geology,2012,33(2):225-235.
[7] 许效松,杜佰伟.碳酸盐岩地区风化壳岩溶储层[J].沉积与特提斯地质,2005,25(3):1-6. Xu Xiaosong,Du Baiwei.The palaeoweathering crust-type karst reservoir rocks in carbonate rocks[J].Sedimentary Geology and Tethyan Geology,2005,25(3):1-6.
[8] 杨俊,姜振学,向才富,等.塔里木盆地塔中83—塔中16井区碳酸盐岩油气特征及其成因机理[J].石油与天然气地质,2012,33(1):101-110. Yang Jun,Jiang Zhenxue,Xiang Caifu,et al.Carbonate reservoir characteristics and their genetic mechanisms in Tazhong83-Tazhong16 wellblock,Tarim Basin[J].Oil & Gas Geology,2012,33(1):101-110.
[9] 漆立新,云露.塔河油田奥陶系碳酸盐岩岩溶发育特征与主控因素[J].石油与天然气地质,2010,31(1):1-12. Qi Lixin,Yun Lu.Development characteristics and main controlling factors of the Ordovican carbonate karst in Tahe oilfield[J],Oil & Gas Geology,2010,31(1):1-12.
[10] 许国明,刘诗荣,宋晓波,等.川西坳陷孝新合丰构造带井位论证报告.2010. Xu Guoming,Liu Shirong,Song Xiaobo,et al.Well location demonstration report on Xiaoquan-Xinchang-Hexingchang-Fenggu tectonic belt in west Sichuan depression.2010.
[11] 熊歆睿,王洪辉,周波,等.古城油田B区核三段主力油层储层特征研究[J].石油地质与工程,2011,25(6):9-11. Xiong Xinrui,et al.Reservoir characteristics of the major oil bed of third member of Hetaoyuan formation in B area of Gucheng oilfiled[J].Petroleum Geology and Engineering,2011,25(6):9-11.

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Characterization of the sedimentation of the Leikoupo Formation and the weathering crust reservoirs at the top of the formation in the western Sichuan Basin

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