Organic reef characteristics and exploration orientation of Silurian Shiniulan Formation, southeastern Sichuan Basin

Abstract

Abstract: Analysis on field outcrops, well data and seismic data clarifies that the Silurian Shiniulan Formation in southeastern Sichuan Basin presents as a large north-dipping gentle slope, which can be divided to (from south to north) inner gentle slope, central gentle slope and outer gentle slope-continental shelf. The second member of Shiniulan Formation (Shi 2 Member) contains central gentle slope facies belt, with clean water and high energy, and it is composed of reef-beach carbonate deposits. The lithology is mainly of shell limestone, coral limestone and bioclastic limestone. Reef beach is characterized by thickened strata and “bright spot” on seismic profile and represents NE-trending ribbon-pattern distribution along the Xuyong-Well Ximen 1-Wenshui-Well Longsheng 2 in plane. The Yuanhou-Simianshan area is located in the main part of reef-beach zone, with high micro-geomorphology, where the reef-beach dolomite reservoirs are probably developed, suggesting as the favorable exploration prospect of the Shiniulan Formation.

Key words: reef beach, Shiniulan Formation, exploration orientation, southeastern Sichuan Basin

Wang Haijun, Meng Xianwu, Liang Zirui, Li Xingping. Organic reef characteristics and exploration orientation of Silurian Shiniulan Formation, southeastern Sichuan Basin[J]. China Petroleum Exploration, 2016, 21(5): 33-41.

References

[1] 李双建，周雁，肖开华，等. 四川盆地东南缘习水吼滩志留系古油藏特征[J].石油学报，2009,30(6):849-854. Li Shuangjian, Zhou Yan, Xiao Kaihua, et al. Characteristics of Silurian destroyed oil reservoir in Houtan section of Xishui area in southeastern margin of Sichuan Basin[J], Acta Petrolei Sinica, 2009,30(6):849-854.
[2] 马文辛，刘树根，黄文明，等. 四川盆地东南缘志留系古油藏特征及其油气勘探意义[J].石油与天然气地质，2012,33(3):432-441. Ma Wenxin, Liu Shugen, Huang Wenming, et al. Characteristics of Silurian Paleo-oil reservoirs and their significance for petroleum exploration on the southern margin of Sichuan Basin[J], Oil & Gas Geology, 2012,33(3):432-441.
[3] 万云，张廷山，兰光志，等.川东南—黔北地区志留纪生物礁与古环境演化[J].沉积学报，1997,15(增刊1):106-113. Wan Yun, Zhang Tingshan, Lan Guangzhi, et al. Silurian reefs and palaeo-environment evolution in Chuandongnan-Qianbei area[J], Acta Sedimentologica Sinica, 1997,15(Supp.1):106-113.
[4] 马东洲，陈洪德，朱利东，等. 川南下志留统石牛栏组沉积体系与岩相古地理[J].成都理工大学学报：自然科学版，2006,3(3):228-233. Ma Dongzhou, Chen Hongde, Zhu lidong, et al. Depositional system and lithofacies and paleogeography of the Silurian Shiniulan Formation in the southern Sichun Basin[J]. Journal of Chengdu University of technology: Sciense & Technology Edition, 2006,33(3):228-232.
[5] 侯明才，陈洪德，陈安清，等. 江南—雪峰隆起对川东南—黔南凹陷石牛栏期沉积古地理的制约[J]. 成都理工大学学报：自然科学版，2010,37(4):395-400. Hou Mingcai, Chen Hongde, Chen Anqing, et al. Constraints of the Jiangnan—Xuefeng upheaval to the depositiona system and paleogeography distribution of southeast Sichuan-south Guizhou depression during Shiniulan Period[J]. Journal of Chengdu University of technology: Sciense & Technology Edition，2010,37(4):395-400.
[6] 朱志军，陈洪德. 川东南地区早志留世晚期沉积特征及沉积模式分析[J]. 中国地质，2012,39(1):64-76. Zhu zhijun，Chen Hongde. An analysis of sedimentary characteristics and model during early Silurian late period in southeastern Sichuan Province[J]. Geology In China, 2012,39(1):64-76.
[7] 朱志军，陈洪德，林良彪，等. 黔北—川东南志留系层序格架下的沉积体系演化特征及有利区带预测[J]. 沉积学报，2010,28(2):243-253. Zhu Zhijun, Chen Hongde, Lin Liangbiao, et al. Depositional system evolution characteristics in the framework of sequences of Silurian and prediction of favorable zones in the northern Guizhou-Southeastern Sichuan[J]. Acta Sedimentologica Sinica, 2010,28(2):243-253.
[8] 王瑞华，谭钦银，付键元，等. 川东南志留系石牛栏组生物礁沉积特征[J]. 沉积与特提斯地质，2013,33(2):10-16. Wang Ruihua, Tan Qinyin, Fu Jianyuan, et al. Sedimentary characteristics of the Silurian organic reefs from the Shiniulan Formation in southeastern Sichuan[J]. Sedimentary Geology and Tethyan Geology, 2013,33(2):10-16.
[9] 王正和，谭钦银，何利，等. 川东南—黔北志留系石牛栏组沉积与层序地层[J].石油与天然气地质，2013,34(4):499-507. Wang Zhenghe, Tan Qinyin, He Li, et al. Deposition and sequence stratigraphy of the Silurian Shiniulan Formation in southeastern Sichuan-northern Guizhou Province[J]. Oil & Gas Geology, 2013,34(4):499-507.
[10] 王光旭，詹仁斌，邓占球，等.川东华蓥山志留纪兰多维列世中期珊瑚群集及其意义[J]. 中国科学：地球科学，2013,43(9):1456-1463. Wang Guangxu, Zhan Renbin, Deng Zhanqiu, et al. Paleoecological associations of middle Llandovery (Silurian) corals from Huaying Mountain, eastern Sichuan Province[J]. Science China: Earth Sciences, 2013,43(9):1456-1463.
[11] 周大志，李国蓉，周鹏，等. 川东南志留系石牛栏组成岩作用研究[J].天然气技术，2009,3(6):7-11. Zhou Dazhi, Li Guorong, Zhou Peng, et al. The Diagenesis study of Silurian Shiniulan Formation in southeastern Sichuan Basin[J]. Natural Gas Technology, 2009,3(6):7-11.
[12] 刘若冰，田景春，黄勇，等. 川东南震旦系灯影组白云岩与志留系石牛栏组灰岩储层特征[J]. 成都理工大学学报：自然科学版，2007,34(3):245-250. Liu Ruobing，Tian Jingchun，Huang Yong，et al. Characteristics of the carbonate rock reservoir of the Upper Sinian Dengying Formation and the Lower Silurian Shiniulan Formation in the southeast of Sichuan[J]. Journal of Chengdu University of technology: Sciense & Technology Edition, 2007,34(3):245-250.
[13] 杨晓萍，张宝民，柳少波. 四川盆地南部志留系碳酸盐灰泥丘成因与储集性[J].海相油气地质，2002,7(4):26-32. Yang Xiaoping, Zhang Baomin, Liu Shaobo. The Carbonate plaster mound origin and reservoir of Silurian in south Sichuan basin[J], Marine Origin Petroleum Geology, 2002,7(4):26-32.
[14] 罗志立.从上扬子地区板块构造演化评价四川盆地古生界[M].北京：地质出版社，2000:60-102. Luo Zhili. The Paleozonic evaluation of Sichuan basin from the upper Yangtze plate tectonic evolution[M]. Beijing: Geological Publishing House, 2000:60-102.
[15] 郭英海，李壮福，李大华，等. 四川地区早志留世岩相古地理[J].古地理学报，2004,6(1):20-29. Guo Yinghai, Li Zhuangfu, Li Dahua, et al. Lithofacies palaeogeography of the early Silurian in Sichuan area[J]. Journal of Palaegeography, 2004,6(1):20-29.
[16] 王亮,陈云燕,刘玉霞. 川东南彭水地区龙马溪组页岩孔隙结构特征[J]. 中国石油勘探，2014,19(5):80-88. Wang Liang, Chen Yunyan, Liu Yuxia. Shale porous structural characteristics of Longmaxi Formation in Pengshui area of southeast Sichuan Basin[J]. China Petroleum Exploration, 2014, 19(5):80-88.
[17] 文玲，胡书毅，田海芹. 扬子地区志留纪岩相古地理与石油地质条件研究[J].石油勘探与开发，2002,29(6):11-14. Wen Ling, Hu Shuyi, Tian Haiqin. Lithofacies paleogeography and petroleum geology of the Silurian in Yangtze area [J]. Petroleum Exploration and Development, 2002,29(6):11-14.
[18] 黄福喜，杨涛，闫伟鹏，等. 四川盆地龙岗与元坝地区礁滩成藏对比分析[J]. 中国石油勘探，2014,19(3):12-20. Huang Fuxi, Yang Tao, Yan Weipeng, et al. Comparison and analysis of reef-bank gas reservoirs in Longgang and Yuanba areas in Sichuan Basin[J]. China Petroleum Exploration, 2014, 19(3):12-20.
[19] 肖开华. 中国南方志留系油气地质特征与勘探方向[J].天然气工业，2009,29(11):1-4. Xiao Kaihua. Geological features and exploration direction of the Silurian hydrocarbon reservoirs in Southern China[J]. Natural Gas Industry, 2002,29(11):1-4.
[20] 汤济广，李豫，汪凯明，等. 四川盆地东南地区龙马溪组页岩气有效保存区综合评价[J]. 天然气工业，2015,35(5):15-23. Tang Jiguang, Li Yu, Wang Kaiming, et al. Comprehensive evaluation of effective preservation zone of Longmaxi Formation shale gas in the southeast Sichuan Basin[J]. Natural Gas Industry, 2015,35(5):15-23.
[21] 党录瑞，郑荣才，郑超，等. 川东地区长兴组白云岩储层成因与成岩系统[J]. 天然气工业，2011,31(11):47-52. Dang Lurui，Zheng Rongcai，Zheng Chao，et al. Origins and diagenetic system of dolomite reservoirs in the Upper Permian Changxing Fm, eastern Sichuan Basin[J]. Natural Gas Industry, 2011,33(11):47-52.
[22] 雷卞军，强子同，文应初，等. 川东及邻区上二叠统生物礁的白云岩化[J]. 地质评论，1994,40(6):534-543. Lei Bianjun，Qiang Zitong，Wen Yingchu，et al. Dolomitization of the upper Permian organic reefs in eastern Sichuan and its adjacent areas[J]. Geological Review, 1994,40(6):535-543.
[23] 冯冲，邹华耀，郭彤楼，等. 川东北地区二叠系—三叠系礁滩相储层发育机理[J]. 特种油气藏，2015,22(6):1-4. Feng Chong, Zou Huayao, Guo Tonglou, et al. Development mechanism of Permian-Triassic reef shoal reservoir in northeastern Sichuan Basin[J]. Special Oil & Gas Reservoirs, 2015,22(6):1-4.