松辽盆地太东斜坡区葡萄花油层油水分布规律及主控因素
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摘要
太东斜坡区为松辽盆地大庆长垣向三肇凹陷倾没的单倾斜坡.利用岩心、测井和地震等资料,研究葡萄花油层油藏类型和油水分布规律.结果表明:斜坡区油平面受4条近南北向"断层带"分割,具有东西分带特征,且受源外油源供给不足和油东西向运移影响,自东向西单一"断阶带"含油性逐级变差;油垂向分布受沉积演化和优势输导通道控制表现为"双峰"特征,主要分布在葡萄花油层中部;油藏类型主要为东南倾斜坡背景下的近南北向断层与北西向河道砂体匹配形成的断层—岩性油藏.在油水分布规律研究的基础上,结合单一圈闭内断层与单砂体匹配样式,提出源外斜坡区油聚集机制受构造部位、优质储层、断层封闭性和断层与砂体匹配样式控制,即单一"断阶带"高点控制油气聚集部位;浅水三角洲水下分流河道和河控席状砂构成油气优质储层;断层侧向封闭性影响油气垂向富集高度和平面"互补"特征;断层与单砂体匹配样式决定油气富集层位.
Taidong slope area is the single slope where Daqing placanticline plunge to Sanzhao sag in Songliao basin.Using data as core,logging,and seism,we study reservoir types and hydrocarbon distribution rule in Putaohua reservoir and get the following conclusions:The slope area oil layers are divided by four nearly north-south trending fault zone in plane and have the feature of east-west zoning.Because the oil source outside the source area is insufficient and the east-to-west migration trending,oil-bearing in single fault terrace zone became worse gradually from east to west.Controlled by sedimentary evolution and advantage conducting channel,the vertical distribution of oil presents the feature of 'double peaks' and mainly distributed in central Putaohua reservoir.Under the background of SE tilt slope,the oil reservoir type is mainly fault-lithologic reservoir matched by nearly north-south trending fault and north-west trending channel sand body.According to the matching type of fault and channel sand body in single trap and the study of oil and water distribution rule,we think the accumulation mechanism is controlled by structural parts,high quality reservoir,fault seal ability and fault-sand matching style.That is to say,oil and gas accumulation parts are controlled by single 'fault terrace zone' high point,shallow water delta distributary channel and the river control sheet are high quality reservoirs,the lateral sealing ability of the fault affect hydrocarbon vertical enrichment height and plane 'complementary' characteristic,fault and single sand body matching style determine oil and gas enrichment position.
Taidong slope area is the single slope where Daqing placanticline plunge to Sanzhao sag in Songliao basin.Using data as core,logging,and seism,we study reservoir types and hydrocarbon distribution rule in Putaohua reservoir and get the following conclusions:The slope area oil layers are divided by four nearly north-south trending fault zone in plane and have the feature of east-west zoning.Because the oil source outside the source area is insufficient and the east-to-west migration trending,oil-bearing in single fault terrace zone became worse gradually from east to west.Controlled by sedimentary evolution and advantage conducting channel,the vertical distribution of oil presents the feature of 'double peaks' and mainly distributed in central Putaohua reservoir.Under the background of SE tilt slope,the oil reservoir type is mainly fault-lithologic reservoir matched by nearly north-south trending fault and north-west trending channel sand body.According to the matching type of fault and channel sand body in single trap and the study of oil and water distribution rule,we think the accumulation mechanism is controlled by structural parts,high quality reservoir,fault seal ability and fault-sand matching style.That is to say,oil and gas accumulation parts are controlled by single 'fault terrace zone' high point,shallow water delta distributary channel and the river control sheet are high quality reservoirs,the lateral sealing ability of the fault affect hydrocarbon vertical enrichment height and plane 'complementary' characteristic,fault and single sand body matching style determine oil and gas enrichment position.
引文
[1]付晓飞,王朋岩,申家年,等.简单斜坡油气富集规律——以松辽盆地西部斜坡北段为例[J].地质论评,2006,52(4):522-531.
[2]李水福,胡守志,何生,等.泌阳凹陷北部斜坡带生物降解油的油源对比[J].石油学报,2010,31(6):946-951.
[3]刘志宏,王芃,沙茜,等.柴达木盆地阿尔金斜坡带构造特征与阿尔金断裂形成时间讨论——以月牙山地区为例[J].地质学报,2010,84(9):1275-1282.
[4]刘宗堡,马世忠,孙雨,等.三肇凹陷葡萄花油层高分辨率层序地层划分及沉积特征研究[J].沉积学报,2008,26(3):399-406.
[5]王有功,付广,刘阿男,等.源外斜坡区断裂对油气聚集与分布的控制作用研究——以松辽盆地尚家油田扶余、杨大城子油层为例[J].地质论评,2011,57(1):101-108.
[6]赵健,罗晓容,张宝收,等.塔中地区志留系柯坪塔格组砂岩输导层量化表征及有效性评价[J].石油学报,2011,32(6):949-958.
[7]刘宗堡,贾钧捷,赵淼,等.大型凹陷源外斜坡区油运聚成藏模式——以松辽盆地长10地区扶余油层为例[J].岩性油气藏,2012,24(1):64-68.
[8]许怀智,蔡东升,孙志鹏,等.琼东南盆地中央峡谷沉积充填特征及油气地质意义[J].地质学报,2012,86(4):1275-1282.
[9]刘豪,王英民,王媛.浅海陆棚环境下沉积坡折带及其对局部强制海退体系域的控制[J].沉积学报,2011,29(5):906-915.
[10]黄劲松,刘长国,付晓飞,等.“小而肥”油藏油水分布特征及成因探讨——以海拉尔贝尔凹陷贝中油田为例[J].吉林大学学报:地球科学版,2012,42(1):9-17.
[11]吴海瑞.松辽盆地乾北地区青三段沉积微相发育特征及其对岩性油藏的控制作用[J].大庆石油学院学报,2011,35(4):10-11.
[12]李连生,吴冠生,李磊,等.泌阳凹陷浅层油气成藏主控因素及模式[J].大庆石油学院学报,2009,33(3):49-50.
[13]黄桂雄.松北探区萨、葡、高油层油气成藏条件及有利区预测[J].大庆石油学院学报,2011,35(1):6-7.
[14]宫帅汝.松辽盆地南部花敖泡海坨子地区扶余油层沉积微相类型[J].大庆石油学院学报,2010,34(4):16-17.
[15]刘宗堡,马世忠,吕延防,等.大型凹陷斜坡带油气成藏模式——以三肇凹陷葡萄花油层为例[J].吉林大学学报:地球科学版,2008,38(6):937-945.
[16]王建功,王天琦,苏娟,等.松辽盆地北部葡萄花油层浅水湖泊三角洲沉积特征及对油气分布的控制[J].中国石油勘探,2008(1):11-16.
[17]吕延防,沙子萱,付晓飞,等.断层垂向封闭性定量评价方法及应用[J].石油学报,2007,28(5):34-38.
[2]李水福,胡守志,何生,等.泌阳凹陷北部斜坡带生物降解油的油源对比[J].石油学报,2010,31(6):946-951.
[3]刘志宏,王芃,沙茜,等.柴达木盆地阿尔金斜坡带构造特征与阿尔金断裂形成时间讨论——以月牙山地区为例[J].地质学报,2010,84(9):1275-1282.
[4]刘宗堡,马世忠,孙雨,等.三肇凹陷葡萄花油层高分辨率层序地层划分及沉积特征研究[J].沉积学报,2008,26(3):399-406.
[5]王有功,付广,刘阿男,等.源外斜坡区断裂对油气聚集与分布的控制作用研究——以松辽盆地尚家油田扶余、杨大城子油层为例[J].地质论评,2011,57(1):101-108.
[6]赵健,罗晓容,张宝收,等.塔中地区志留系柯坪塔格组砂岩输导层量化表征及有效性评价[J].石油学报,2011,32(6):949-958.
[7]刘宗堡,贾钧捷,赵淼,等.大型凹陷源外斜坡区油运聚成藏模式——以松辽盆地长10地区扶余油层为例[J].岩性油气藏,2012,24(1):64-68.
[8]许怀智,蔡东升,孙志鹏,等.琼东南盆地中央峡谷沉积充填特征及油气地质意义[J].地质学报,2012,86(4):1275-1282.
[9]刘豪,王英民,王媛.浅海陆棚环境下沉积坡折带及其对局部强制海退体系域的控制[J].沉积学报,2011,29(5):906-915.
[10]黄劲松,刘长国,付晓飞,等.“小而肥”油藏油水分布特征及成因探讨——以海拉尔贝尔凹陷贝中油田为例[J].吉林大学学报:地球科学版,2012,42(1):9-17.
[11]吴海瑞.松辽盆地乾北地区青三段沉积微相发育特征及其对岩性油藏的控制作用[J].大庆石油学院学报,2011,35(4):10-11.
[12]李连生,吴冠生,李磊,等.泌阳凹陷浅层油气成藏主控因素及模式[J].大庆石油学院学报,2009,33(3):49-50.
[13]黄桂雄.松北探区萨、葡、高油层油气成藏条件及有利区预测[J].大庆石油学院学报,2011,35(1):6-7.
[14]宫帅汝.松辽盆地南部花敖泡海坨子地区扶余油层沉积微相类型[J].大庆石油学院学报,2010,34(4):16-17.
[15]刘宗堡,马世忠,吕延防,等.大型凹陷斜坡带油气成藏模式——以三肇凹陷葡萄花油层为例[J].吉林大学学报:地球科学版,2008,38(6):937-945.
[16]王建功,王天琦,苏娟,等.松辽盆地北部葡萄花油层浅水湖泊三角洲沉积特征及对油气分布的控制[J].中国石油勘探,2008(1):11-16.
[17]吕延防,沙子萱,付晓飞,等.断层垂向封闭性定量评价方法及应用[J].石油学报,2007,28(5):34-38.
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