Development characteristics of reefs on the platform margin of Changxing Formation in eastern Kaijiang-Liangping ocean trough and its significance for petroleum geological exploration

doi:10.3969/j.issn.1672-7703.2019.04.006

Abstract

Abstract: Several giant gas fields (Puguang, Huanglongchang, etc.) have been found in eastern Kaijiang-Liangping ocean trough, Sichuan Basin, which is an important exploration domain of reef beach. In order to further clarify the development characteristics of platform margin reefs in the Changxing Formation in the eastern side of the ocean trough, based on drilling and seismic data, the development characteristics of platform margin belt and platform margin reefs on the eastern side of the trough were studied on the basis of the external outline, internal shape and plane distribution of platform margin reefs. The study results indicate: (1) According to slope angle difference, the platform margin in the eastern Kaijiang-Liangping ocean trough can be divided into steep slope type and gentle slope type. (2) It has sectional feature on plane. (3) There are two development patterns (retrogradation pattern in gentle slope, superposition pattern in steep slope), and the retrogradation pattern in gentle slope is the dominant. (4) The development of platform margin reefs is mainly controlled by sea level change, multiple-level synsedimentary faults and regional tension. (5) The reef development on the gentle slope platform margin experienced four evolution stages: micro-palaeogeomorphic formation stage (Wujiaping), gentle slope beach development stage (Chang 1 stage), weak rimmed platform margin reef beach development stage (early Chang 2 stage), multi-row reef beach development stage on rimmed platform margin (middle Chang 2-Chang 3 stage). The multi-row reefs in the gentle slope of the Changxing Formation in the eastern Kaijiang-Liangping ocean trough have wide distribution area and favorable hydrocarbon accumulation conditions. It is an important area for natural gas exploration.

CLC Number:

Wu Saijun, Wei Guoqi, Yang Wei, Duan Shufu, Jin Hui, Xie Wuren, Wang Minglei, Wang Kun, Su Nan, Ma Shiyu, Hao Cuiguo, Wang Xiaodan. Development characteristics of reefs on the platform margin of Changxing Formation in eastern Kaijiang-Liangping ocean trough and its significance for petroleum geological exploration[J]. China Petroleum Exploration, 2019, 24(4): 457-465.

References

[1] 倪新峰，陈洪德，田景春，韦东晓. 川东北地区长兴组—飞仙关组沉积格局及成藏控制意义[J]. 石油与天然气地质，2007,28(4): 458-465. Ni Xinfeng, Chen Hongde, Tian Jingchun, Wei Dongxiao. Sedimnetary framework of Changxing-Feixianguan Formations and its control on reservoiring in northeastern Sichuan Basin[J]. Oil & Gas Geology, 2007,28(4):458-465.
[2] 马永生. 四川盆地普光超大型气田的形成机制[J]. 石油学报， 2007,28(2):9-14. Ma Yongsheng. Generation mechanism of Puguang gas field in Sichuan Basin[J]. Acta Petrolei Sinica, 2007,28(2):9-14.
[3] 马永生，蔡勋育，赵培荣. 元坝气田长兴组—飞仙关组礁滩相储层特征和形成机理[J]. 石油学报，2014,35(6):1001-1011. Ma Yongsheng, Cai Xunyu, Zhao Peirong. Characteristics and formation mechanisms of reef-shoal carbonate reservoirs of Changxing-Feixianguan Formation,Yuanba gas field[J]. Acta Petrolei Sinica, 2014,35(6):1001-1011.
[4] 杜金虎、徐春春、汪泽成，沈平，何海清，杨雨，等. 四川盆地二叠— 三叠系礁滩天然气勘探[M]. 北京：石油工业出版社，2010. Du Jinhu, Xu Chunchun, Wang Zecheng，Shen Ping, He Haiqing, Yang Yu, et al . Natural gas exploration of Permian- Triassic reef & oolite in Sichuan[M]. Beijing: Petroleum Industry Press, 2010.
[5] 郑志红，李登华，白森舒，贾君，昝昕，刘卓亚，等. 四川盆地天然气资源潜力[J]. 中国石油勘探，2017,22(3):12-20. Zheng Zhihong, Li Denghua, Bai Senshu, Jia Jun, Zan Xin, Liu Zhuoya, et al . Resource potentials of natural gas in Sichuan Basin[J]. China Petroleum Exploration, 2017,22(3): 12-20.
[6] 刘冉，霍飞，王鑫，杨涛，李熹微，陈柯童. 普光气田下三叠统飞仙关组碳酸盐岩储层特征及主控因素分析[J]. 中国石油勘探，2017, 22(6):34-46. Liu Ran, Huo Fei, Wang Xin, Yang Tao, Li Xiwei, Chen Ketong. Characteristics and main controlling factors of Lower Triassic Feixianguan Formation carbonate reservoir in Puguang gas field[J]. China Petroleum Exploration, 2017,22(6):34-46.
[7] 罗兰，王兴志，李勇，张芮，王楠. 川西北地区中二叠统沉积相特征及其对储层的影响[J]. 特种油气藏，2017,24(4):60-66. Luo Lan, Wang Xingzhi, Li Yong, Zhang Rui, Wang Nan. Sedimentary facies in Middle Permian series in northwest Sichuan and its effect on reservoirs[J]. Special Oil & Gas Reservoirs, 2017,24(4):60-66.
[8] 赵向原，胡向阳，曾联波，肖开华，李宏涛，游瑜春，等. 四川盆地元坝地区长兴组礁滩相储层天然裂缝有效性评价[J]. 天然气工业， 2017,37(2):52-61. Zhao Xiangyuan, Hu Xiangyang, Zeng Lianbo, Xiao Kaihua, Li Hongtao, You Yuchun, et al . Evaluation on the effectiveness of natural fractures in reef-flat facies reservoirs of Changxing Fm in Yuanba area, Sichuan Basin[J]. Natural Gas Industry， 2017,37(2):52-61.
[9] 张健，周刚，张光荣，李国辉，汪华. 四川盆地中二叠统天然气地质特征与勘探方向[J]. 天然气工业，2018,38(1):10-20. Zhang Jian, Zhou Gang, Zhang Guangrong, Li Guohui, Wang Hua. Geological characteristics and exploration orientation of Mid-Permian natural gas in the Sichuan Basin[J]. Natural Gas Industry, 2018,38(1):10-20.
[10] 邢凤存，陆永潮，郭彤楼，李思田，侯明才，胡华蕊，等. 碳酸盐岩台地边缘沉积结构差异及其油气勘探意义——以川东北早三叠世飞仙关期台地边缘带为例[J]. 岩石学报，2017,33(4)：1305-1316. Xing Fengcun, Lu Yongchao, Guo Tonglou, Li Sitian, Hou Mingcai, Hu Huarui, et al . Sedimentary texture diversity of different carbonate margins and it its significance for petroleum exploration: a case study of carbonate platform margins in Feixianguan period of the Early Triassic, NE Sichuan Basin, China[J]. Acta Petrologica Sinica, 2017,33(4):1305-1316.
[11] 徐安娜，汪泽成，江兴福，翟秀芬，殷积峰. 四川盆地开江—梁平海槽两侧台地边缘形态及其对储层发育的影响[J]. 天然气工业， 2014,34(4):37-43. Xu Anna, Wang Zecheng, Jiang Xingfu, Zhai Xiufen,Yin Jifeng.Morphological characteristics of platform margins along the Kaijiang-Liangping trough and their influences on reservoir development in the Sichuan Basin[J]. Natural Gas Industry, 2014,34(4):37-43.
[12] 陈洪德，钟怡江，侯明才, 林良彪，董桂玉，刘家洪. 川东北地区长兴组—飞仙关组碳酸盐岩台地层序充填结构及成藏效应[J]. 石油与天然气地质，2009,30(5):539-547. Chen Hongde, Zhong Yijiang, Hou Mingcai, Lin Liangbiao, Dong Guiyu, Liu Jiahong.Sequence styles and hydrocarbon accumulation effects of carbonate rock platform in the Changxing-Feixianguan formations in the northeastern Sichuan Basin[J]. Oil & Gas Geology, 2009,30(5):539-547.
[13] 王一刚，文应初，洪海涛, 夏茂龙，范毅，文龙，等. 四川盆地北部晚二叠世—早三叠世碳酸盐岩斜坡相带沉积特征[J]. 古地理学报， 2009,11(2):143-156. Wang Yigang, Wen Yingchu, Hong Haitao, Xia Maolong, Fan Yi, Wen Long, et al . Carbonate slope facies sedimentary characteristics of the Late Permian to Early Triassic in northern Scihuan Basin[J]. Journal of Palaeogeography, 2009, 11(2):143-156.
[14] 罗志立，金以钟，朱夔玉，赵锡奎. 试论上扬子地台的峨眉地裂运动 [J]. 地质论评，1988,34(1):11-24.Luo Zhili, Jin Yizhong, Zhu Kuiyu, Zhao Xikui. On EMEI taphrogenesis of the upper Yangtze platform[J]. Geological Review, 1988,34(1):11-24.
[15] 罗志立. 峨眉地裂运动的厘定及其意义[J]. 四川地质学报，1989,9(1): 1-17. Luo Zhili. Determination of the Emei taphrogenesis and its significance[J]. Acta Geologica Sichuan, 1989,9(1):1-17.
[16] 姚军辉，罗志立，孙玮，王睿婧. 峨眉地幔柱与广旺—开江—梁平等拗拉槽形成关系[J]. 新疆石油地质，2011,32(1):97-101. Yao Junhui, Luo Zhili, Sun Wei, Wang Ruijing.Relationship between Emei mantle plume and aulacogens of Guangwang- Kaijiang-Liangping[J]. Xinjiang Petroleum Geology, 2011 32(1):97-101.
[17] 罗志立，孙玮，韩建辉，王睿婧. 峨眉地幔柱对中上扬子区二叠纪成藏条件影响的探讨[J]. 地学前缘，2012,19(6):144-154. Luo Zhili, Sun Wei, Han Jianhui,Wang Ruijing.Effect of Emei mantle plume on the conditions of Permian accumulation in middle-upper Yangtze area[J]. Earth Science Frontiers, 2012 19(6):144-154.
[18] 张帆，文应初，强子同，王生海. 四川及邻区晚二叠统吴家坪碳酸盐缓坡沉积[J]. 西南石油学院学报，1993,15(1):34-41. Zhang Fan, Wen Yinchu, Qiang Zitong, Wang Shenghai. Carbonate ramp sedimentation of Permian in wujiaping, Sichuan and it neighbouring region[J]. Journal of Southwestern Petroleum Institute, 1993,15(1):34-41.
[19] 黄仁春. 四川盆地二叠纪—三叠纪开江—梁平陆棚形成演化与礁滩发育[J]. 成都理工大学学报：自然科学版，2014,41(4):452-457. Huang Renchun. Formation and evolution of Permian-Triassic Kaijiang-Liangping shelf and development of reef-shoal reservoirs in Sichuan Basin, China[J]. Journal of Chengdu University of Technology: Science & Technology Edition, 2014, 41(4):452-457.
[20] 唐大海，肖笛，谭秀成，李海云，谢继容，刘宏，等. 古岩溶地貌恢复及地质意义——以川西北中二叠统茅口组为例[J].石油勘探与开发， 2016,43(5):689-695. Tang Dahai, Xiao Di,Tan Xiucheng, Li Haiyun,Xie Jirong, Liu Hong, et al . Restoration of paleokarst landform and its geological significance: a case from Middle Permian Maokou Formation in northwestern Sichuan Basin[J]. Petroleum Exploration and Development, 2016,43(5):689-695.
[21] 马永生，储昭宏. 普光气田台地建造过程及其礁滩储层高精度层序地层学研究[J]. 石油与天然气地质，2008,29(5):548-556. Ma Yongsheng, Chu Zhaohong. Building-up process of carbonate platform and high-resolution sequence stratigraphy of reservoirs of reef and oolitic shoal facies in Puguang gas field[J]. Oil & Gas Geology, 2008,29(5):548-556.
[22] 夏明军，曾大乾，邓瑞健，姜贻伟，毕建霞，靳秀菊，等. 普光气田长兴组台地边缘礁、滩沉积相及储层特征[J]. 天然气地球科学， 2009,20(4):549-562. Xia Mingjun, Zeng Daqian, Deng Ruijian, Jiang Yiwei, Bi Jianxia, Jin Xiuju, et al . Reef and shallow facies and reservoir characteristics in Changxing Formation platform margin, Puguang gas field[J]. Natural Gas Geoscience, 2009,20(4): 549-562.
[23] 张廷山，姜照勇，陈晓慧. 四川盆地古生代生物礁滩特征及发育控制因素[J]. 中国地质，2008,35(5):1017-1030. Z h a n g T i n g s h a n , J i a n g Z h a o y o n g , C h e n X i a o h u i . Characteristics and controlling factors of development of Paleozoic reef-banks in the Sichuan Basin[J]. Geology in China, 2008,35(5):1017-1030.
[24] 郑博，郑荣才，周刚, 文国华. 川东五百梯长兴组台缘生物礁储层沉积学特征[J]. 岩性油气藏，2011,23(3):60-69. Zheng Bo, Zheng Rongcai, Zhou Gang, Wen Guohua. Sedimentary characteristics of platform margin reef reservoir of upper Permian Changxing Formation in Wubaiti area, eastern Sichuan[J]. Lithologic Reservoirs, 2011,23(3):60-69.
[25] 殷鸿福，童金南，丁梅华，张克信，赖旭龙. 扬子区晚二叠世—中三叠世海平面变化[J]. 地球科学——中国地质大学学报，1994,19(5): 627-632. Yin Hongfu, Tong Jinnan, Ding Meihua, Zhang Kexin, Lai Xulong. Late Permian-Middle Triassic sea level changes of Yangtze platform[J]. Earth Science-Journal of China University of Geosciences, 1994,19(5):627-632.
[26] 王兴志，张帆，马青，杨满平，王一刚，文应初，等. 四川盆地东部晚二叠世—早三叠世飞仙关期礁、滩特征与海平面变化[J]. 沉积学报， 2002,20(2):249-254. Wang Xingzhi, Zhang Fan, Ma Qing, Yang Mianping, Wang Yigang, Weng Yingchu, et al . The characteristics of reef and bank and the fluctuation of sea-level in Feixianguan period of Late Permian-Early Triassic,east Sichuan Basin[J]. Acta Sedimentologica Sinica, 2002,20(2):249-254.
[27] 王超，陆永潮，杜学斌，陈平，陈雷，焦祥燕. 南海西部深水区台缘生物礁发育模式与成因背景[J]. 石油地球物理勘探，2015,50(6): 1179-1189. Wang Chao, Lu Yongchao, Du Xuebin,Chen Ping, Chen Lei, Jiao Xiangyan.Developmental pattern and genetic background of carbonate platform margin reef complexes in deep-water area in western South China Sea[J]. Oil Geophysical Prospecting, 2015,50(6):1179-1189.