涠西南凹陷斜阳斜坡涠洲组成藏关键因素分析及油气勘探
|
摘要
涠西南凹陷是南海北部湾盆地重要的富烃凹陷之一。通过开展涠西南凹陷斜阳斜坡涠洲组的油气成藏要素及其时空匹配关系方面的研究,得出该区具有优异的成藏条件:流沙港组二段是最主要的烃源岩层,达到好~优的生油岩级别;发育多套储盖组合,其中涠三段储集砂体较为发育,储层物性好,多数为中孔中渗储层;圈闭类型主要为构造圈闭与岩性-构造圈闭,且纵向叠合性较好,是油气良好的聚集场所;沟源断裂与三角洲储集砂体的有效配置构成了高效的油气疏导体系。此外成藏要素时空匹配对油气成藏的控制作用表现在以下两个方面:(1)油藏均沿源断裂分布;(2)距离流二段源岩越近的圈闭越有利油藏形成。在此深入分析的基础上,通过钻探发现了涠洲6-D中型油田,最终证实了斜阳斜坡巨大的勘探潜力。
The Weixinan sag is one of the major sags rich in oil and gas in the Beibu Gulf basin,South China Sea. The critical factor of petroleum accumulation and spatial matching was studied. The results show that this area has excellent accumulation conditions. The member 2 of the Liushangang Formation is the most important source rock. It is ranked as good-excellent source rocks. The area has several sets of reservoir-cap rock assemblage. The member 3 of the Weizhou Formation has rich reservoir rocks and exhibits the best reservoir properties,with middle porosity and middle permeability. And the traps are dominated by structural and lithological-structural traps,have good longitudinal overlapin in the area. Moreover,the area is a good place hydrocarbon migration and accumulation.Rift connecting the source rocks and delta reservoir play an efficient oil and gas dredging system. The control effect of space matching on hydrocarbon ccumulation was showed in the following two aspects.(1)Oil reservoirs are all distributed along source faults.(2)The shorter the distance from trap to source rock,the better it is to form oil reservoir. Based on the depth analysis,founded the Weizhou 6-D medium oilfield,and finally confirmed by the Xieyang slope of great exploration potential.
The Weixinan sag is one of the major sags rich in oil and gas in the Beibu Gulf basin,South China Sea. The critical factor of petroleum accumulation and spatial matching was studied. The results show that this area has excellent accumulation conditions. The member 2 of the Liushangang Formation is the most important source rock. It is ranked as good-excellent source rocks. The area has several sets of reservoir-cap rock assemblage. The member 3 of the Weizhou Formation has rich reservoir rocks and exhibits the best reservoir properties,with middle porosity and middle permeability. And the traps are dominated by structural and lithological-structural traps,have good longitudinal overlapin in the area. Moreover,the area is a good place hydrocarbon migration and accumulation.Rift connecting the source rocks and delta reservoir play an efficient oil and gas dredging system. The control effect of space matching on hydrocarbon ccumulation was showed in the following two aspects.(1)Oil reservoirs are all distributed along source faults.(2)The shorter the distance from trap to source rock,the better it is to form oil reservoir. Based on the depth analysis,founded the Weizhou 6-D medium oilfield,and finally confirmed by the Xieyang slope of great exploration potential.
引文
1赵军,洪庆玉,董伟良.北部湾涠西南凹陷物源方向及古地理景观分析.石油勘探与开发,2001;28(5):25-30Zhao Jun,Hong Qingyu,Dong Weiliang.Analysis on material sources and palaeogeographic landscapes of Weixinan Sag.Petroleum Exploration and Development,2001;28(5):25-30
2张启明,苏厚熙.北部湾盆地石油地质.海洋地质与第四纪地质,1989;9(3):71-81Zhang Qiming,Su Houxi.Petroleum geology of Weixinan Sag.Marine Geology&Quaternary Geology,1989;9(3):71-81
3刘震,谭卓,蔡东升,等.北部湾盆地涠西南凹陷流沙港组岩性圈闭形成条件.现代地质,2008;22(2):239-246Liu Zhen,Tan Zhuo,Cai Dongsheng,et al.Analysis on forming conditions of lithologic trap in liushagang formation,Weixinan Depression of BBW Basin.Geoscience,2008;22(2):239-246
4卢林,王企浩,黄建军.北部湾盆地涠西南和海中凹陷新生代局部构造演化史.海洋石油,2007;27(1):25-29Lu Lin,Wang Qihao,Huang Jianjun.Structural evolvement history of Weixinan and Haizhong Depression in Beibuwan Basin during Cenozoic Era.Offshore Oil,2007;27(1):25-29
5谢泰俊,张通彩.北部湾盆地东北部含油气系统及勘探方向.中国海上油气,1996;10(5):300-301Xie Taijun,Zhang Tongcai.The petroleum system and explortion targets in the northeastern part of Beibuwan Basin.China Offshore Oil and Gas,1996;10(5):300-301
6宋刚练,席敏红,张萍,等.北部湾盆地涠西南凹陷油气成藏特征研究.地质与勘探,2012;24(2):415-420Song Ganglian,Xi Minhong,Zhang Ping,et al.Hydrocarbon accumulation characteristics in the Weixinan Sag,Beibuwan Basin.Geology and Exploration,2012;24(2):415-420
7陈亮,甘华军,祝春荣,等.北部湾盆地涠西南凹陷沉降史研究.新疆石油学院学报,2002;14(4):12-17Chen Liang,Gan Huajun,Zhu Chunrong,et al.Study on subsidence history of Weixinan Depression in Beibuwan Basin.Journal of Xinjiang Petroledm Institute,2002;14(4):12-17
8张智武,刘志峰,张功成,等.北部湾盆地裂陷期构造及演化特征.石油天然气学报,2013;35(1):6-10Zhang Zhiwu,Liu Zhifeng,Zhang Gongcheng,et al.The chasmic stage and structural evolution features of Beibuwan Basin.Journal of Oil and Gas Technology,2013;35(1):6-10
9周雯雯.涠西南凹陷原油地球化学特征及油源对比.中国海上油气(地质),1993;7(3):12-21Zhou Wenwen.The studies of geochemical characteristics of crude oils from Weixinan Sag and oil-rock correlation.China Offshore Oil and Gas,1993;7(3):12-21
10丁卫星,王文军,马英俊.北部湾盆地福山凹陷流沙港组含油气系统特征.海洋石油,2003;23(2):1-6Ding Weixing,Wang Wenjun,Ma Yingjun.Characteristics of Liushagang formation petroleum system in Fushan Depression of Beibuwan Basin.Offshore Oil,2003;23(2):1-6
11肖军,王华,马丽娟,等.北部湾盆地涠西南凹陷W61潜山油气成藏条件分析.新疆石油学院学报,2003;5(4):30-37Xiao Jun,Wang Hua,Ma Lijuan,et al.Characteristics of buried hill oil pool of W61 area in Weixinan Depression,Beibuwan Basin.Journal of Xinjiang Petroleum Institute,2003;5(4):30-37
12赵楠,蒋利平,李茂,等.涠西南凹陷L1段油藏特征及规律统计分析.海洋石油,2010;30(4):70-75Zhao Nan,Jiang Liping,Li Mao,et al.Reservoir characteristics and statistical analysis of L1 segment in Weixinan Depression.Offshore Oil,2010;30(4):70-75
13席敏红,余学兵,黄建军.涠西南凹陷(西部)古近系层序地层及沉积特征研究.海洋石油,2007;27(3):1-12Xi Minhong,Yu Xuebin,Huang Jianjun.Paleogene stratigraphic sequence and sedimentary feature in the west of Weixinan Depression.Offshore Oil,2007;27(3):1-12
14李宏义,姜振学,庞雄奇.柴北缘油气运移优势通道特征及其控油气作用.地球科学---中国地质大学学报,2006;31(2):214-220Li Hongyi,Jiang Zhenxue,Pang Xiongqi.Dominant migration pathway and its control on oil-gas migration in the Northern edge of Qaidam Basin.Earth Science-Journal of China University of Geosciences,2006;31(2):214-220
15梁书义,刘克奇,蔡忠贤.油气成藏体系及油气疏导子系研究.石油实验地质,2005;27(4):327-332Liang Shuyi,Liu Keqi,Cai Zhongxian.Study of petroleum accumulation system and pathway system.Petroleum Geology&Experiment,2005;27(4):327-332
16王存武,陈红汉,陈长民,等.珠江口盆地白云深水扇特征及油气成藏主控因素.地球科学---中国地质大学学报,2007;32(2):247-252Wang Cunwu,Chen Honghan,Chen Changmin,et al.Characteristics of the Baiyun Deep-Water fan and main accumulation controlling factors in Pearl River Mouth Basin,South China Sea.Earth ScienceJournal of China University of Geosciences,2007;32(2):247-252
17胡忠良.北部湾盆地涠西南凹陷超压系统与油气运移.地学前缘,2000;7(3):73-80Hu Zhongliang.Overpressure system and migration of hydrocarbon in Weixinan Depression in Beibuwan Basin.Earth Science Frontiers,2000;7(3):73-80
18孙建峰,须雪豪,席敏红.北部湾盆地海中凹陷油气成藏条件分析.海洋石油,2008;28(2):36-39Sun Jianfeng,Xu Xuehao,Xi Minhong.Analysis of oil accumulation conditions in Haizhong Depression,Beibuwan Basin.Offshore Oil,2008;28(2):36-39
19刘飞,周文,邓礼正,等.塔河西南上古生界碎屑岩储层物性影响因素分析.物探化探计算技术,2007;29(4):317-321Liu Fei,Zhou Wen,Deng Lizheng,et al.Influential factors on physical property parameters of palaeozoic clasolite resrevoirs in the Southwest of tahe oil field.Computing Techniques for Geophysical and Geochemical Exploration,2007;29(4):317-321
20朱伟林,江文荣.北部湾盆地涠西南凹陷断裂与油气藏.石油学报,1998;19(3):6-10Zhu Weilin,Jiang Wenrong.Relations between fractures and hydrocarbon reservoirs in Weixinan Sag.Acta Petrolei Sinica,1998;19(3):6-10
21李明诚.石油与天然气运移研究综述.石油勘探与开发,2000;27(4):3-10Li Mingjian.An overview of hydrocarbon migration research.Petroleum Exploration and Development,2000;27(4):3-10
22陈亮,王华,庄心国,等.涠西南凹陷W54构造油气成藏条件分析及成藏模式构建.河南石油,2004;18(3):1-3Chen Liang,Wang Hua,Zhuang Xinguo,et al.An analysis of reservoiring conditions and patterns in W54 structure in Weixinan Sag.Henan Petroleum,2004;18(3):1-3
23翟光明.中国石油地质志卷十六:沿海大陆架及毗邻海域油气区(下册).北京:石油工业出版社,1992Zhai Guangming.Petroleum geology of China Vol.16:oil and gas area along the continental shelf and adjacent sea area.Beijing:Petroleum Industry Press,1992
24 England W,Maceknzie A S,Mann D M,et al.The movement and entrapment of petroleum fluids in the subsurface.Journal of Geological Society,1987;144:327-347
2张启明,苏厚熙.北部湾盆地石油地质.海洋地质与第四纪地质,1989;9(3):71-81Zhang Qiming,Su Houxi.Petroleum geology of Weixinan Sag.Marine Geology&Quaternary Geology,1989;9(3):71-81
3刘震,谭卓,蔡东升,等.北部湾盆地涠西南凹陷流沙港组岩性圈闭形成条件.现代地质,2008;22(2):239-246Liu Zhen,Tan Zhuo,Cai Dongsheng,et al.Analysis on forming conditions of lithologic trap in liushagang formation,Weixinan Depression of BBW Basin.Geoscience,2008;22(2):239-246
4卢林,王企浩,黄建军.北部湾盆地涠西南和海中凹陷新生代局部构造演化史.海洋石油,2007;27(1):25-29Lu Lin,Wang Qihao,Huang Jianjun.Structural evolvement history of Weixinan and Haizhong Depression in Beibuwan Basin during Cenozoic Era.Offshore Oil,2007;27(1):25-29
5谢泰俊,张通彩.北部湾盆地东北部含油气系统及勘探方向.中国海上油气,1996;10(5):300-301Xie Taijun,Zhang Tongcai.The petroleum system and explortion targets in the northeastern part of Beibuwan Basin.China Offshore Oil and Gas,1996;10(5):300-301
6宋刚练,席敏红,张萍,等.北部湾盆地涠西南凹陷油气成藏特征研究.地质与勘探,2012;24(2):415-420Song Ganglian,Xi Minhong,Zhang Ping,et al.Hydrocarbon accumulation characteristics in the Weixinan Sag,Beibuwan Basin.Geology and Exploration,2012;24(2):415-420
7陈亮,甘华军,祝春荣,等.北部湾盆地涠西南凹陷沉降史研究.新疆石油学院学报,2002;14(4):12-17Chen Liang,Gan Huajun,Zhu Chunrong,et al.Study on subsidence history of Weixinan Depression in Beibuwan Basin.Journal of Xinjiang Petroledm Institute,2002;14(4):12-17
8张智武,刘志峰,张功成,等.北部湾盆地裂陷期构造及演化特征.石油天然气学报,2013;35(1):6-10Zhang Zhiwu,Liu Zhifeng,Zhang Gongcheng,et al.The chasmic stage and structural evolution features of Beibuwan Basin.Journal of Oil and Gas Technology,2013;35(1):6-10
9周雯雯.涠西南凹陷原油地球化学特征及油源对比.中国海上油气(地质),1993;7(3):12-21Zhou Wenwen.The studies of geochemical characteristics of crude oils from Weixinan Sag and oil-rock correlation.China Offshore Oil and Gas,1993;7(3):12-21
10丁卫星,王文军,马英俊.北部湾盆地福山凹陷流沙港组含油气系统特征.海洋石油,2003;23(2):1-6Ding Weixing,Wang Wenjun,Ma Yingjun.Characteristics of Liushagang formation petroleum system in Fushan Depression of Beibuwan Basin.Offshore Oil,2003;23(2):1-6
11肖军,王华,马丽娟,等.北部湾盆地涠西南凹陷W61潜山油气成藏条件分析.新疆石油学院学报,2003;5(4):30-37Xiao Jun,Wang Hua,Ma Lijuan,et al.Characteristics of buried hill oil pool of W61 area in Weixinan Depression,Beibuwan Basin.Journal of Xinjiang Petroleum Institute,2003;5(4):30-37
12赵楠,蒋利平,李茂,等.涠西南凹陷L1段油藏特征及规律统计分析.海洋石油,2010;30(4):70-75Zhao Nan,Jiang Liping,Li Mao,et al.Reservoir characteristics and statistical analysis of L1 segment in Weixinan Depression.Offshore Oil,2010;30(4):70-75
13席敏红,余学兵,黄建军.涠西南凹陷(西部)古近系层序地层及沉积特征研究.海洋石油,2007;27(3):1-12Xi Minhong,Yu Xuebin,Huang Jianjun.Paleogene stratigraphic sequence and sedimentary feature in the west of Weixinan Depression.Offshore Oil,2007;27(3):1-12
14李宏义,姜振学,庞雄奇.柴北缘油气运移优势通道特征及其控油气作用.地球科学---中国地质大学学报,2006;31(2):214-220Li Hongyi,Jiang Zhenxue,Pang Xiongqi.Dominant migration pathway and its control on oil-gas migration in the Northern edge of Qaidam Basin.Earth Science-Journal of China University of Geosciences,2006;31(2):214-220
15梁书义,刘克奇,蔡忠贤.油气成藏体系及油气疏导子系研究.石油实验地质,2005;27(4):327-332Liang Shuyi,Liu Keqi,Cai Zhongxian.Study of petroleum accumulation system and pathway system.Petroleum Geology&Experiment,2005;27(4):327-332
16王存武,陈红汉,陈长民,等.珠江口盆地白云深水扇特征及油气成藏主控因素.地球科学---中国地质大学学报,2007;32(2):247-252Wang Cunwu,Chen Honghan,Chen Changmin,et al.Characteristics of the Baiyun Deep-Water fan and main accumulation controlling factors in Pearl River Mouth Basin,South China Sea.Earth ScienceJournal of China University of Geosciences,2007;32(2):247-252
17胡忠良.北部湾盆地涠西南凹陷超压系统与油气运移.地学前缘,2000;7(3):73-80Hu Zhongliang.Overpressure system and migration of hydrocarbon in Weixinan Depression in Beibuwan Basin.Earth Science Frontiers,2000;7(3):73-80
18孙建峰,须雪豪,席敏红.北部湾盆地海中凹陷油气成藏条件分析.海洋石油,2008;28(2):36-39Sun Jianfeng,Xu Xuehao,Xi Minhong.Analysis of oil accumulation conditions in Haizhong Depression,Beibuwan Basin.Offshore Oil,2008;28(2):36-39
19刘飞,周文,邓礼正,等.塔河西南上古生界碎屑岩储层物性影响因素分析.物探化探计算技术,2007;29(4):317-321Liu Fei,Zhou Wen,Deng Lizheng,et al.Influential factors on physical property parameters of palaeozoic clasolite resrevoirs in the Southwest of tahe oil field.Computing Techniques for Geophysical and Geochemical Exploration,2007;29(4):317-321
20朱伟林,江文荣.北部湾盆地涠西南凹陷断裂与油气藏.石油学报,1998;19(3):6-10Zhu Weilin,Jiang Wenrong.Relations between fractures and hydrocarbon reservoirs in Weixinan Sag.Acta Petrolei Sinica,1998;19(3):6-10
21李明诚.石油与天然气运移研究综述.石油勘探与开发,2000;27(4):3-10Li Mingjian.An overview of hydrocarbon migration research.Petroleum Exploration and Development,2000;27(4):3-10
22陈亮,王华,庄心国,等.涠西南凹陷W54构造油气成藏条件分析及成藏模式构建.河南石油,2004;18(3):1-3Chen Liang,Wang Hua,Zhuang Xinguo,et al.An analysis of reservoiring conditions and patterns in W54 structure in Weixinan Sag.Henan Petroleum,2004;18(3):1-3
23翟光明.中国石油地质志卷十六:沿海大陆架及毗邻海域油气区(下册).北京:石油工业出版社,1992Zhai Guangming.Petroleum geology of China Vol.16:oil and gas area along the continental shelf and adjacent sea area.Beijing:Petroleum Industry Press,1992
24 England W,Maceknzie A S,Mann D M,et al.The movement and entrapment of petroleum fluids in the subsurface.Journal of Geological Society,1987;144:327-347