松辽盆地三肇凹陷向斜区白垩系姚家组葡萄花油层油水分布特征及其主控因素
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摘要
松辽盆地三肇凹陷向斜区具有数量可观的油气资源,但葡萄花油层的油水分布十分复杂,其主控因素尚不清楚。利用成熟开发区详实的静态资料和开发动态资料,研究了已发现的油藏类型和分布特征,分析了石油成藏的控制因素,并探讨了富油凹陷向斜区油水分布的主控因素。结果表明:1)三肇凹陷向斜区葡萄花油层的油水分布受控于由局部构造和单砂体组成的单一圈闭,在单一圈闭内具有统一的油水界面,相邻的不同单一圈闭具有不同的油水分布规律; 2)单一圈闭的聚油模式及其叠加样式控制了向斜区的油气成藏与油水分布,已成藏的单一圈闭和未成藏的单一圈闭在空间上的复杂叠置最终造成了向斜区石油聚集与分布的复杂性; 3)垂向多层、平面多支的单砂体和复杂的局部构造组合形成的圈闭以及非圈闭的叠置关系是向斜区油水分布特征的主控因素。由此可见,向斜区的油藏预测需从控制油气成藏的不规则空间体的构成要素出发,即分析断裂、单砂体及二者空间配置关系。
The volume of oil and gas in the syncline area of Sanzhao Sag,Songliao Basin,is sizable. It's hard,however,to make clear the complicated oil-water distribution in Putaohua reservoir,and so far its controlling factors are rarely known.Reservoir types discovered and their distribution patterns were investigated,controlling factors of hydrocarbon accumulation were analyzed,and the main controlling factors of oil-water distribution in the syncline area of the prolific sag were discussed,by using the abundant static data and performance data of the mature development blocks of the oilfield. The results show that(1) oil-water distribution of Putaohua reservoir in the syncline area is controlled by a single trap composed of local structure and single sand body,the oil-water interface of a single trap is unified,but the oil-water distribution patterns vary for different single traps adjacent.(2) In a single trap,the oil-water distribution in the syncline area is controlled by the patterns of hydrocarbon accumulation and superimposition: complex spatial superimposition of single traps with and without hydrocarbons ultimately results in the complexity of hydrocarbon accumulation and oil-water distribution in the syncline area,Sanzhao Sag.(3) The superimposition of traps that are composed of vertically multi-layered and laterally multi-branched single sand bodies and complicated local structures with non-traps is the main controlling factor of oil-water distribution in the syncline area. Therefore,reservoir prediction in the syncline area should begin with the analysis of elements of irregular geologic body controlling hydrocarbon accumulation,that is,the evaluation of faults,single sand bodies and their spatial assemblage.
The volume of oil and gas in the syncline area of Sanzhao Sag,Songliao Basin,is sizable. It's hard,however,to make clear the complicated oil-water distribution in Putaohua reservoir,and so far its controlling factors are rarely known.Reservoir types discovered and their distribution patterns were investigated,controlling factors of hydrocarbon accumulation were analyzed,and the main controlling factors of oil-water distribution in the syncline area of the prolific sag were discussed,by using the abundant static data and performance data of the mature development blocks of the oilfield. The results show that(1) oil-water distribution of Putaohua reservoir in the syncline area is controlled by a single trap composed of local structure and single sand body,the oil-water interface of a single trap is unified,but the oil-water distribution patterns vary for different single traps adjacent.(2) In a single trap,the oil-water distribution in the syncline area is controlled by the patterns of hydrocarbon accumulation and superimposition: complex spatial superimposition of single traps with and without hydrocarbons ultimately results in the complexity of hydrocarbon accumulation and oil-water distribution in the syncline area,Sanzhao Sag.(3) The superimposition of traps that are composed of vertically multi-layered and laterally multi-branched single sand bodies and complicated local structures with non-traps is the main controlling factor of oil-water distribution in the syncline area. Therefore,reservoir prediction in the syncline area should begin with the analysis of elements of irregular geologic body controlling hydrocarbon accumulation,that is,the evaluation of faults,single sand bodies and their spatial assemblage.
引文
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[8]吴伟涛,邓静,赵靖舟,等.鄂尔多斯盆地华庆地区长7油层组致密油成藏条件与成藏模式[J].石油与天然气地质,2016,37(6):874-881.Wu Weitao,Deng Jing,Zhao Jingzhou,et al. Accumulation conditions and models of tight oil reservoirs in Chang-7 of Huaqing area,the Ordos Basin[J]. Oil&Gas Geology,2016,37(6):874-881.
[9]刘宗堡,宗寿魁,姜崇,等.凹陷向斜区油气滞留成因机制及成藏模式——以松辽盆地古龙向斜葡萄花油层为例[J].中国矿业大学学报,2015,44(1):76-85.Liu Zongbao,Zong Shoukui,Jiang Chong,et al. Hydrocarbon retention mechanism and accumulation model of syncline area in depression:as Putaohua reservoir in Gulong syncline,Songliao basin[J]. Journal of China University of Mining&Technology,2015,44(1):76-85.
[10]马中振,戴国威,盛晓峰,等.松辽盆地北部连续型致密砂岩油藏的认识及其地质意义[J].中国矿业大学学报,2013,42(2):221-229.Ma Zhongzhen,Dai Guowei,Sheng Xiaofeng,et al. Tight sand oil reservoir of continuous type in northern Songliao basin and its geological significance[J]. Journal of China University of Mining&Technology,2013,42(2):221-229.
[11]刘芳,刘性全,刘宗堡,等.基于储层构型理论的致密砂岩成藏过程分析——以松辽盆地古龙向斜葡萄花油层为例[J].石油与天然气地质,2018,39(2):268-278.Liu Fang,Liu Xingquan,Liu Zongbao,et al. Hydrocarbon accumulation analysis of tight sandstone based on reservoir architecture theory—A case from Putaohua reservoir in the Gulong syncline,Songliao Basin[J]. Oil&Gas Geology,2018,39(2):268-278.
[12]刘宗堡,孙龙,吕延防,等.凹陷不同构造区油富集主控因素及成藏模式——以松辽盆地三肇凹陷葡萄花油层为例[J].中南大学学报(自然科学版),2015,46(8):2992-3002.Liu Zongbao,Sun Long,Lv Yanfang,et al. Main factors of oil enrichment and accumulation mode of depression different structure zones:In case of Putaohua reservoir of Sanzhao depression in Songliao Basin[J]. Journal of Central South University:Science and Technology Edition,2015,46(8):2992-3002.
[13]佟斯琴,李斌,罗群,等.松辽盆地古龙南凹陷葡萄花油层储层单砂层沉积微相研究及有利砂体预测[J].石油与天然气地质,2014,35(4):517-525.Tong Siqin,Li Bin,Luo Qun,et al. Single-sandstone-layer sedimentary microfacies and favorable sandbody prediction of Putaohua reservoir in south Gulong sag,Songliao Basin[J]. Oil&Gas Geology,2014,35(4):517-525.
[14]王有功,严萌,郎岳,等.松辽盆地三肇凹陷葡萄花油层油源断层新探[J].石油勘探与开发,2015,42(6):734-740.Wang Yougong,Yan Meng,Lang Yue,et al. Re-determining source faults of the Upper Cretaceous Putaohua oil layer in Sanzhao sag of Songliao Basin,NE China[J]. Petroleum Exploration and Development,2015,42(6):734-740.
[15]刘云燕.松辽盆地三肇凹陷葡萄花油层成藏条件及模式的差异性[J].石油与天然气地质,2012,33(4):616-623.Liu Yunyan. Differences of oil accumulation conditions andpatterns in Putaohua oil layer,Sanzhao depression,Songliao Basin[J]. Oil&Gas Geology,2012,33(4):616-623.
[16]孙雨,马世忠,姜洪福,等.松辽盆地三肇凹陷葡萄花油层河控浅水三角洲沉积模式[J].地质学报,2010,84(10):1502-1509.Sun Yu,Ma Shizhong,Jiang Hongfu,et al. Sedimentary mode of shallow Lacustrine Fluvial dominated delta of Putaohua reservoirs in the Sanzhao depression,Songliao Basin[J]. Acta Geologica Sinica,2010,84(10):1502-1509.
[17]孙雨,赵丹,于利民,等.浅水湖盆河控三角洲前缘砂体分布特征与沉积模式探讨——以松辽盆地北部永乐地区葡萄花油层为例[J].沉积学报,2015,33(3):439-447.Sun Yu,Zhao Dan,Yu Li Min,et al. Sandbody distribution and sedimentary model in shallow lacustrine fluvial-dominated delta front:a case study from Putaohua oil layer of Yongle area in Songliao Basin[J]. Acta Sedimentologica Sinica,2015,33(3):439-447.
[18]陈伟,李鹏,彭承文,等.大庆油田肇35区块葡萄花油层储层特征及控制因素[J].石油与天然气地质,2010,31(6):802-809.Chen Wei,Li Peng,Peng Chengwen,et al. Characteristics and controlling factors of pore features in the Putaohua oil reservoir in the B lock Zhao-35,Daqing oilfield[J]. Oil&Gas Geology,2010,31(6):802-809.
[19]付晓飞,宋岩.松辽盆地三肇凹陷“T11”多边断层非构造成因机制探讨[J].地质学报,2008,82(6):738-749.Fu Xiaofei,Song Yan. Nontectonic mechanism of polygonal“T11”faults in the Sanzhao Sag of Songliao Basin[J]. Acta Geologica Sinica,2008,82(6):738-749.
[20]孙雨,马世忠,姜洪福,等.三肇凹陷葡萄花油层油藏分布特征及其控制因素[J].中南大学学报(自然科学版),2011,42(8):2387-2393.Sun Yu,Ma Shizhong,Jiang Hongfu,et al. Distribution characteristicsand controlling factors for reservoirs of Putaohua oil layer in Sanzhao Sag of Songliao Basin[J]. Journal of Central South University:Science and Technology Edition,2011,42(8):2387-2393.
[2]侯启军,赵占银,黄志龙.松辽盆地深盆油成藏门限及勘探潜力[J].石油勘探与开发,2011,38(5):523-529.Hou Qijun,Zhao Zhanyin,Huang Zhilong. Accumulation threshold and exploration potential of deep basin oil in theSongliao Basin[J].Petroleum Exploration and Development,2011,38(5):523-529.
[3]吴和勇,王跃文,梁晓东,等.向斜成藏理论及其石油地质意义[J].地学前缘,2015,22(1)181-188.Wu Heyong,Wang Yuewen,Liang Xiaodong,et al. Theory of petroleum accumulation in syncline and its significance to petroleum geology[J]. Earth Science Frontiers,2015,22(1):181-188.
[4]林承焰,曹铮,任丽华,等.松辽盆地南部大情字井向斜区葡萄花油层石油富集规律及成藏模式[J].吉林大学学报(地球科学版),2016,46(6):1598-1610.Lin Chengyan,Cao Zheng,Ren Lihua,et al. Oil enrichment regularity and accumulation modes of putaohua reservoir in daqingzijing syncline area,Southern Songliao Basin[J]. Journal of Jilin University(Earth Science Edition),2016,46(6):1598-1610.
[5]赵靖舟,付金华,姚泾利,等.鄂尔多斯盆地准连续型致密砂岩大气田成藏模式[J].石油学报,2012,33(S1):37-52.Zhao Jingzhou,Fu Jinhua,Yao Jingli,et al. Quasi-continuous accumulation model of large tight sandstone gas field in Ordos Basin[J].Acta Petrolei Sinica,2012,33(S1):37-52.
[6]刘宗堡,崔羽西,方庆,等.凹陷向斜区岩性类油藏油富集主控因素及成藏模式——以松辽盆地升西—徐家围子向斜葡萄花油层为例[J].沉积学报,2014,32(4):776-783.Liu Zongbao,Cui Yuxi,Fang Qing,et al. Oil enrichment main controlling factors and accumulation model of lithologic reservoir in depression syncline area:A case of the Putaohua reservoir in Songliao Basin Shengxi—Xujiaweizi syncline[J]. Acta Sedimentologica Sinica,2014,32(4):776-783.
[7]孙雨,马世忠,刘云燕,等.松辽盆地三肇凹陷葡萄花油层局部构造控油模式探讨[J].地质论评,2009,55(5):693-700.Sun Yu,Ma Shizhong,Liu Yunyan,et al. An approach to oil-controlled model of local structure of Putaohua oil layer in the Sanzhao Sag,Songliao Basin[J]. Geological Review,2009,55(5):693-700.
[8]吴伟涛,邓静,赵靖舟,等.鄂尔多斯盆地华庆地区长7油层组致密油成藏条件与成藏模式[J].石油与天然气地质,2016,37(6):874-881.Wu Weitao,Deng Jing,Zhao Jingzhou,et al. Accumulation conditions and models of tight oil reservoirs in Chang-7 of Huaqing area,the Ordos Basin[J]. Oil&Gas Geology,2016,37(6):874-881.
[9]刘宗堡,宗寿魁,姜崇,等.凹陷向斜区油气滞留成因机制及成藏模式——以松辽盆地古龙向斜葡萄花油层为例[J].中国矿业大学学报,2015,44(1):76-85.Liu Zongbao,Zong Shoukui,Jiang Chong,et al. Hydrocarbon retention mechanism and accumulation model of syncline area in depression:as Putaohua reservoir in Gulong syncline,Songliao basin[J]. Journal of China University of Mining&Technology,2015,44(1):76-85.
[10]马中振,戴国威,盛晓峰,等.松辽盆地北部连续型致密砂岩油藏的认识及其地质意义[J].中国矿业大学学报,2013,42(2):221-229.Ma Zhongzhen,Dai Guowei,Sheng Xiaofeng,et al. Tight sand oil reservoir of continuous type in northern Songliao basin and its geological significance[J]. Journal of China University of Mining&Technology,2013,42(2):221-229.
[11]刘芳,刘性全,刘宗堡,等.基于储层构型理论的致密砂岩成藏过程分析——以松辽盆地古龙向斜葡萄花油层为例[J].石油与天然气地质,2018,39(2):268-278.Liu Fang,Liu Xingquan,Liu Zongbao,et al. Hydrocarbon accumulation analysis of tight sandstone based on reservoir architecture theory—A case from Putaohua reservoir in the Gulong syncline,Songliao Basin[J]. Oil&Gas Geology,2018,39(2):268-278.
[12]刘宗堡,孙龙,吕延防,等.凹陷不同构造区油富集主控因素及成藏模式——以松辽盆地三肇凹陷葡萄花油层为例[J].中南大学学报(自然科学版),2015,46(8):2992-3002.Liu Zongbao,Sun Long,Lv Yanfang,et al. Main factors of oil enrichment and accumulation mode of depression different structure zones:In case of Putaohua reservoir of Sanzhao depression in Songliao Basin[J]. Journal of Central South University:Science and Technology Edition,2015,46(8):2992-3002.
[13]佟斯琴,李斌,罗群,等.松辽盆地古龙南凹陷葡萄花油层储层单砂层沉积微相研究及有利砂体预测[J].石油与天然气地质,2014,35(4):517-525.Tong Siqin,Li Bin,Luo Qun,et al. Single-sandstone-layer sedimentary microfacies and favorable sandbody prediction of Putaohua reservoir in south Gulong sag,Songliao Basin[J]. Oil&Gas Geology,2014,35(4):517-525.
[14]王有功,严萌,郎岳,等.松辽盆地三肇凹陷葡萄花油层油源断层新探[J].石油勘探与开发,2015,42(6):734-740.Wang Yougong,Yan Meng,Lang Yue,et al. Re-determining source faults of the Upper Cretaceous Putaohua oil layer in Sanzhao sag of Songliao Basin,NE China[J]. Petroleum Exploration and Development,2015,42(6):734-740.
[15]刘云燕.松辽盆地三肇凹陷葡萄花油层成藏条件及模式的差异性[J].石油与天然气地质,2012,33(4):616-623.Liu Yunyan. Differences of oil accumulation conditions andpatterns in Putaohua oil layer,Sanzhao depression,Songliao Basin[J]. Oil&Gas Geology,2012,33(4):616-623.
[16]孙雨,马世忠,姜洪福,等.松辽盆地三肇凹陷葡萄花油层河控浅水三角洲沉积模式[J].地质学报,2010,84(10):1502-1509.Sun Yu,Ma Shizhong,Jiang Hongfu,et al. Sedimentary mode of shallow Lacustrine Fluvial dominated delta of Putaohua reservoirs in the Sanzhao depression,Songliao Basin[J]. Acta Geologica Sinica,2010,84(10):1502-1509.
[17]孙雨,赵丹,于利民,等.浅水湖盆河控三角洲前缘砂体分布特征与沉积模式探讨——以松辽盆地北部永乐地区葡萄花油层为例[J].沉积学报,2015,33(3):439-447.Sun Yu,Zhao Dan,Yu Li Min,et al. Sandbody distribution and sedimentary model in shallow lacustrine fluvial-dominated delta front:a case study from Putaohua oil layer of Yongle area in Songliao Basin[J]. Acta Sedimentologica Sinica,2015,33(3):439-447.
[18]陈伟,李鹏,彭承文,等.大庆油田肇35区块葡萄花油层储层特征及控制因素[J].石油与天然气地质,2010,31(6):802-809.Chen Wei,Li Peng,Peng Chengwen,et al. Characteristics and controlling factors of pore features in the Putaohua oil reservoir in the B lock Zhao-35,Daqing oilfield[J]. Oil&Gas Geology,2010,31(6):802-809.
[19]付晓飞,宋岩.松辽盆地三肇凹陷“T11”多边断层非构造成因机制探讨[J].地质学报,2008,82(6):738-749.Fu Xiaofei,Song Yan. Nontectonic mechanism of polygonal“T11”faults in the Sanzhao Sag of Songliao Basin[J]. Acta Geologica Sinica,2008,82(6):738-749.
[20]孙雨,马世忠,姜洪福,等.三肇凹陷葡萄花油层油藏分布特征及其控制因素[J].中南大学学报(自然科学版),2011,42(8):2387-2393.Sun Yu,Ma Shizhong,Jiang Hongfu,et al. Distribution characteristicsand controlling factors for reservoirs of Putaohua oil layer in Sanzhao Sag of Songliao Basin[J]. Journal of Central South University:Science and Technology Edition,2011,42(8):2387-2393.