Accumulation Model of the Secondary Oil Reservoir in Southern Slope, Weixi'nan Sag and the Implications for Future Exploration

doi:10.11885/j.issn.1674-5086.2019.08.14.03

Abstract

Abstract: In order to reveal the oil and gas accumulation rule and accumulation model of the secondary reservoir in the southern slope of Weixi'nan Sag, the study of oil-source correlation, oil reservoir characteristics, tectonic evolution, the accumulation model of secondary oil reservoirs were analyzed. The results show that before late Miocene the structure shape of southern slope was high in west and low in east, and primary hydrocarbon accumulation was formed in the western anticline trap. The "bottom calcium layer" formed by the hydration of clastic rocks and the decarboxylation of organic matter near the oil-water interface was an effective indicator to determine the oil-bearing range of paleo-reservoirs. Dongsha movement in late Miocene destroyed paleo-reservoir in the western anticline trap and leaded to the redistribution of oil and gas, and formed secondary oil reservoirs in the eastern reversal anticlines. The main exploration objects of the southern slope should be the low-rising anticlines in the eastern part.

Key words: Weixi′nan Sag, paleo-oil reservoir, secondary reservoir, tectonic evolution, reservoir adjustment

CLC Number:

TE122

LI Anqi, YE Qi, HU Desheng, GAI Yonghao, XU Xuefeng. Accumulation Model of the Secondary Oil Reservoir in Southern Slope, Weixi'nan Sag and the Implications for Future Exploration[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2021, 43(2): 36-45.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2019.08.14.03

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2021/V43/I2/36

References

[1] 安作相.油气藏形成过程中油气的再次运移[J].新疆石油地质,1996,17(2):188-193. AN Zuoxiang. Remigration of oil and gas during the forming of oil and gas reservoir[J]. Xinjiang Petroleum Geology, 1996, 17(2):188-193.
[2] 平宏伟,陈红汉.次生油气藏成藏研究进展[J].地球科学进展,2009,24(9):990-1000. doi:10.3321/j.issn:1001-8166.2009.09.005 PING Hongwei, CHEN Honghan. Advances in the research of secondary petroleum reservoirs forming[J]. Advances in Earth Science, 2009, 24(9):990-1000. doi:10.3321/j.issn:1001-8166.2009.09.005
[3] 庞宏,庞雄奇,石秀平,等.调整改造作用对塔中油气藏的影响[J].西南石油大学学报(自然科学版),2010,32(1):33-39. doi:10.3863/j.issn.1674-5086.2010.01.006 PANG Hong, PANG Xiongqi, SHI Xiuping, et al. The influence of adjustment and modification on hydrocarbon accumulation in Tazhong Area[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2010, 32(1):33-39. doi:10.3863/j.issn.1674-5086.2010.01.006
[4] 周波,贾进华,陈秀艳.塔北东河砂岩次生油藏油气运聚模式及启示[J].西南石油大学学报(自然科学版),2013,35(4):25-34. doi:10.3863/j.issn.1674-5086.2013.04.004 ZHOU Bo, JIA Jinhua, CHEN Xiuyan. Petroleum migration pattems of Donghe sandstone secondary hydrocarbon reservoir in north Tarim Basin and their implications for the future exploration[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2013, 35(4):25-34. doi:10.3863/j.issn.1674-5086.2013.04.004
[5] 张迎朝,朱伟林,高阳东.珠江口盆地琼海凸起断裂调整聚集成藏模式[J].西南石油大学学报(自然科学版),2015,37(5):55-63. doi:10.11885/j.issn.1674-5086.2013.11.24.01 ZHANG Yingzhao, ZHU Weilin, GAO Yangdong. Late fault adjustment and late accumulation pool-forming model in Qionghai uplift, Pearl River Mouth Basin[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2015, 37(5):55-63. doi:10.11885/j.issn.1674-5086.2013.11.24.01
[6] 付秀丽,张顺,梁江平.松辽盆地北部浅层次生油气藏成藏特征[J].天然气工业,2010,30(4):29-34. doi:10.3787/j.issn.1000-0976.2010.04.006 FU Xiuli, ZHANG Shun, LIANG Jiangping. Characteristics of hydrocarbon accumulation in the shallow secondary reservoirs in the northern Songliao Basin[J]. Natural Gas Industry, 2010, 30(4):29-34. doi:10.3787/j.issn.1000-0976.2010.04.006
[7] 董焕忠.海拉尔盆地乌尔逊凹陷南部大磨拐河组油气来源及成藏机制[J].石油学报,2011,32(1):62-69. DONG Huanzhong. Oil-gas source and reservoir-forming mechanism of the Damoguaihe Formation in the southern Wuerxun Sag, Hailar Basin[J]. Acta Petrolei Sinica, 2011, 32(1):62-69.
[8] 赵顺兰,赵亚卓,陈传福,等.北部湾盆地涠西南凹陷缓坡类型及油气特征[J].天然气技术与经济,2018,12(1):8-12. doi:10.3969/j.issn.2095-1132.2018.01.002 ZHAO Shunlan, ZHAO Yazhuo, CHEN Chuanfu, et al. Oil and gas characteristics in gentle slopes, Weixinan Sag, Beibuwan Basin[J]. Natural Gas Technology and Economy, 2018, 12(1):8-12. doi:10.3969/j.issn.2095-1132.2018.01.002
[9] 胡德胜,邓勇,李安琪,等.涠西南凹陷南斜坡流二段成藏条件新认识及勘探实践[J].中国海上油气,2017,29(5):30-38. doi:10.11935/j.issn.1673-1506.2017.05.004 HU Desheng, DENG Yong, LI Anqi, et al. New understanding of hydrocarbon accumulation and exploration practice in Member 2 of Liushagang Formation in the south slope of Weixinan Sag, Beibuwan Basin[J]. China Offshore Oil and Gas, 2017, 29(5):30-38. doi:10.11935/j.issn.1673-1506.2017.05.004
[10] 黄海平,张水昌,苏爱国.油气运移聚集过程中的地球化学作用[J].石油实验地质,2011,23(3):278-284. doi:10.3969/j.issn.1001-6112.2001.03.006 HUANG Haiping, ZHANG Shuichang, SU Aiguo. Geochemical process in petroleum migration and accumulation[J]. Petroleum Geology & Experiment, 2011, 23(3):278-284. doi:10.3969/j.issn.1001-6112.2001.03.006
[11] 苏劲,张水昌,杨海军,等.原生油藏调整过程的有机地球化学与岩石学证据——由乡3井看哈得逊油田的调整机制[J].岩石学报,2011,27(6):1886-1898. SU Jin, ZHANG Shuichang, YANG Haijun, et al. Evidence of the organic geochemistry and petrology for the adjustment process of primary reservoir:Insight into the adjustment mechanism of Hadexun Oilfield visa Xiang-3 Well[J]. Acta Petrologica Sinica, 2011, 27(6):1886-1898.
[12] 徐新德,王碧维,李旭红,等.北部湾盆地涠西南凹陷流沙港组隐蔽油气藏油源及成藏特征[J].天然气地球科学,2012,23(1):92-98. XU Xinde, WANG Biwei, LI Xuhong, et al. Oil sources of concealed reservoirs in Liushagang Formation of the Weixinan Sag and acculturation feature, Beibuwan Basin[J]. Natural Gas Geoscience, 2012, 23(1):92-98.
[13] 范蕊,李水福,何生,等.涠西南凹陷烃源岩地球化学特征及油源对比[J].石油实验地质,2014,36(2):238-244. doi:10.11781/sysydz201402238 FAN Rui, LI Shuifu, HE Sheng, et al. Geochemical characteristics of source rocks and oil-source correlation in Weixinan Sag, Beibuwan Basin[J]. Petroleum Geology & Experiment, 2014, 36(2):238-244. doi:10.11781/sysydz201402238
[14] 杨希冰,金秋月,胡林,等.北部湾盆地涠西南凹陷原油成因类型及分布特征[J].西南石油大学学报(自然科学版),2019,41(3):51-60. doi:10.11885/j.issn.1674-5086.2018.08.14.01 YANG Xibing, JIN Qiuyue, HU Lin, et al. Genetic types and distribution of crude oil in Weixinan Depression, Beibuwan Basin[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2019, 41(3):51-60. doi:10.11885/j.issn.1674-5086.2018.08.14.01
[15] 赵淑娟,吴时国,施和生,等.南海北部东沙运动的构造特征及动力学机制探讨[J].地球物理学进展,2012,27(3):1008-1019. doi:10.6038/j.issn.1004-2903.2012.03.022 ZHAO Shujuan, WU Shiguo, SHI Hesheng, et al. Structures and dynamic mechanism related to the Dongsha movement at the northern margin of South China Sea[J]. Progress in Geophysics, 2012, 27(3):1008-1019. doi:10.6038/j.issn.1004-2903.2012.03.022
[16] 蔡周荣,刘维亮,万志峰,等.南海北部新生代构造运动厘定及与油气成藏关系探讨[J].海洋通报,2010,29(2):161-165. doi:10.3969/j.issn.1001-6392.2010.02.007 CAI Zhourong, LIU Weiliang, WAN Zhifeng, et al. Determination of Cenozoic tectonic movement in the northern South China Sea and the relationship between oil-gas reservoir and tectonic movement[J]. Marine Science Bulletin, 2010, 29(2):161-165. doi:10.3969/j.issn.1001-6392.2010.02.007
[17] 尚继宏,李家彪.南海东北部陆缘区新近纪早期反转构造特征及其动力学意义[J].海洋学报,2009,31(3):73-83. doi:10.3321/j.issn:0253-4193.2009.03.009 SHANG Jihong, LI Jiabiao. Inversion structure features and their dynamic significances in Early Neogene strata at continental margin of the northeast South China Sea[J]. Acta Oceanologica Sinica, 2009, 31(3):73-83. doi:10.3321/j.issn:0253-4193.2009.03.009
[18] 赵永强.北部湾盆地涠西勘查区反转构造及其油气成藏意义[J].石油实验地质,2007,29(5):457-461. doi:10.3969/j.issn.1001-6112.2007.05.004 ZHAO Yongqiang. Inversion structure and its implication to hydrocarbon accumulation in Weixi exploration region of the Beibuwan Basin[J]. Petroleum Geology & Experiment, 2007, 29(5):457-461. doi:10.3969/j.issn.1001-6112.2007.05.004
[19] 胡望水,吴婵,梁建设,等.北部湾盆地构造迁移特征及对油气成藏的影响[J].石油与天然气地质,2011,32(6):920-927. HU Wangshui, WU Chan, LIANG Jianshe, et al. Tectonic transport characteristics and their influences on hydrocarbon accumulation in Beibuwan Basin[J]. Oil & Gas Geology, 2011, 32(6):920-927.
[20] 胡忠良.北部湾盆地涠西南凹陷超压系统与油气运移[J].地学前缘,2000,7(3):73-81. doi:10.3321/j.issn:1005-2321.2000.03.007 HU Zhongliang. Overpressure system and migration of hydrocarbon in Weixinan Depression in Beibu Gulf Basin[J]. Earth Science Frontiers, 2000, 7(3):73-81. doi:10.3321/j.issn:1005-2321.2000.03.007
[21] 张萍,郑军,席敏红,等.北部湾盆地涠西南凹陷西南缘油气成藏条件及模式[J].石油实验地质,2015,37(2):157-163. doi:10.7603/s40972-015-0025-3 ZHANG Ping, ZHENG Jun, XI Minhong, et al. Hydrocarbon accumulation conditions and patterns in the southwestern margin of Weixinan Sag, Beibuwan Basin[J]. Petroleum Geology & Experiment, 2015, 37(2):157-163. doi:10.7603/s40972-015-0025-3
[22] 单敬福,张倩,彭妙,等.同沉积期钙富集过程解析与形成机制研究[J].西南石油大学学报(自然科学版),2016,38(4):63-70. doi:10.11885/j.issn.1674-5086.2014.10.22.02 SHAN Jingfu, ZHANG Qian, PENG Miao, et al. Mechanism and process analysis of calcareous precipitation in the syndepositional stage[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2016, 38(4):63-70. doi:10.11885/j.issn.1674-5086.2014.10.22.02
[23] 曾溅辉,彭继林,邱楠生,等.砂-泥岩界面碳酸盐溶解-沉淀反应及其石油地质意义[J].天然气地球科学,2006,17(6):760-764. doi:10.3969/j.issn.1672-1926.2006.06.004 ZENG Jianhui, PENG Jilin, QIU Nansheng, et al. Carbonate dissolution-precipitation in sandstone-shale contact and its petroleum geological meanings[J]. Natural Gas Geoscience, 2006, 17(6):760-764. doi:10.3969/j.issn.1672-1926.2006.06.004
[24] 蒋利平,李茂,劳业春,等.钙质层发育的普通稠油边际油藏高效开发技术探讨——以W11-1E油田为例[J]. 海洋石油,2011,31(1):62-67. doi:10.3969/j.issn.1008-2336.2011.01.062 JIANG Liping, LI Mao, LAO Yechun, et al. The probe of effective development technique for viscous crude marginal pool with calcareous layer:A case of W11-1E Field[J]. Offshore Oil, 2011, 31(1):62-67. doi:10.3969/j.issn.1008-2336.2011.01.062
[25] 汪新光,李茂,蒋利平,等. W1-4油田角尾组海相碎屑岩储层钙质夹层成因机制[J]. 大庆石油地质与开发,2011,30(4):36-39. doi:10.3969/J.ISSN.1000-3754.2011.05.007 WANG Xinguang, LI Mao, JIANG Liping, et al. Genetic mechanism of the calcareous interbeds in marine clastic reservoirs in Jiaowei Formation of W1-4 Oilfield[J]. Petroleum Geology and Oilfield Development in Daqing, 2011, 30(4):36-39. doi:10.3969/J.ISSN.1000-3754.2011.05.007