基于水平井网模式下的心滩内部夹层定量表征
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摘要
由于海上油田井距大、取心资料少,且水平采油井居多,其储层构型研究较陆上油田难度大,因此水平井网模式下的储层构型研究较少。文中以渤海L油田为例,利用测井资料、录井资料、水平井动态生产资料,总结了落淤层、沟道泥岩的测井识别方法,形成测井识别图版;并运用动态资料刻画夹层展布,"两段式""一段式""均匀式"含水率上升规律验证了夹层刻画的准确性。平面上,将渤海海域L油田馆陶组Ⅲ油组心滩分为迎水滩、背水滩、主体区及翼部;纵向上,将心滩分为垂积体、落淤层、沟道泥岩,渤海海域L油田落淤层、沟道泥岩以泥质夹层为主。文中通过对心滩内部夹层的精细表征,总结了剩余油分布模式,预测了剩余油分布的范围及储量规模,为L油田中后期高效开发奠定了基础。
Due to large well spacing, little coring data, and more horizontal wells in offshore oilfield, it is more difficult to study the reservoir architecture than that of onshore oilfield. Therefore, there are few studies on the reservoir architecture based on horizontal well pattern. Taking Bohai L Oilfield as an example, this paper summarizes logging identification method of fall silt layer and channel mudstone, and forms an interlayer recognition template by the logging data and dynamic production information of horizontal wells. The interlayer distribution is characterized by dynamic production information. The accuracy of interlayer distribution is verified by the difference of water-cut rise rules which includes "two-stage" and "one-stage" and "even" pattern. In the plane, the braided bar of Ⅲ oil group of Guantao Formation in Bohai L Oilfield is divided into upstream bar, downstream bar, main bar and wing bar. In the vertical, the braided bar is divided into sedimentary body, fall silt layer, channel mudstone. The fall silt layer and channel mudstone in Bohai L Oilfield are dominated by muddy interlayer. Based on the precise characterization of inner interlayers in braided bar, the remaining oil distribution pattern is obtained and the range and scale of remaining oil distribution are predicted, which provides a foundation for the efficient development of L Oilfield.
Due to large well spacing, little coring data, and more horizontal wells in offshore oilfield, it is more difficult to study the reservoir architecture than that of onshore oilfield. Therefore, there are few studies on the reservoir architecture based on horizontal well pattern. Taking Bohai L Oilfield as an example, this paper summarizes logging identification method of fall silt layer and channel mudstone, and forms an interlayer recognition template by the logging data and dynamic production information of horizontal wells. The interlayer distribution is characterized by dynamic production information. The accuracy of interlayer distribution is verified by the difference of water-cut rise rules which includes "two-stage" and "one-stage" and "even" pattern. In the plane, the braided bar of Ⅲ oil group of Guantao Formation in Bohai L Oilfield is divided into upstream bar, downstream bar, main bar and wing bar. In the vertical, the braided bar is divided into sedimentary body, fall silt layer, channel mudstone. The fall silt layer and channel mudstone in Bohai L Oilfield are dominated by muddy interlayer. Based on the precise characterization of inner interlayers in braided bar, the remaining oil distribution pattern is obtained and the range and scale of remaining oil distribution are predicted, which provides a foundation for the efficient development of L Oilfield.
引文
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[11]王锐.辫状河厚砂体内部夹层的识别与分布特征[J].大庆石油地质与开发,2016,35(3):83-87.
[12]王石,万琼华,陈玉琨,等.基于辫状河储层构型的流动单元划分及其分布规律[J].油气地质与采收率,2015,22(5):47-50.
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[14]李海燕,高阳,王延杰,等.辫状河储集层夹层发育模式及其对开发的影响:以准格尔盆地风城油田为例[J].石油勘探与开发,2015,42(3):364-372.
[15]于欢.辫状河储层内部构型精细描述及剩余油分布[J].大庆石油地质与开发,2015,34(4):73-77.
[16]余成林,李志鹏,熊运斌,等.心滩储层内部构型分析[J].西南石油大学学报(自然科学版),2012,34(3):19-22.
[17]孙天建,穆龙新,赵国良.砂质辫状河储集层隔夹层类型及其表征方法:以苏丹穆格莱特盆地Hegli油田为例[J].石油勘探与开发,2014,41(1):112-119.
[18]崔建,李海东,冯建松,等.辫状河储层隔夹层特征及其对剩余油的影响[J].特种油气藏,2013,20(4):26-30.
[19]杨少春,赵晓东,钟思瑛,等.辫状河心滩内部非均质性及对剩余油分布的影响[J].中南大学学报(自然科学版),2015,46(3):1071-1072.
[2]徐中波,申春生,陈玉琨,等.砂质辫状河储层构型表征及其对剩余油的控制:以渤海海域P油田为例[J].沉积学报,2016,34(2):375-376.
[3]赵春明,胡景双,霍春亮,等.曲流河与辫状河沉积砂体连通模式及开发特征:以渤海地区秦皇岛32-6油田为例[J].油气地质与采收率,2009,16(6):88-89.
[4]于兴河,马兴祥,穆龙新,等.辫状河储层地质模式及层次界面分析[M].北京:石油工业出版社,2004:15-49.
[5]乔雨朋,邵先杰,接敬涛,等.远缘砂质辫状河储层构型及其控制因素:以秦皇岛32-6油田为例[J].油气地质与采收率,2016,23(1):46-47.
[6]MIALL A D.The geology of fluvial deposits:Sedimentary facies,basin analysis and petroleum geology[M].Berlin:Springer-Verlag,1996:26-65.
[7]MIALL A D.Architectural-element analysis:a new method of facies analysis applied to fluvial deposits[J].Earth-Science Reviews,1985,22(4):261-308.
[8]党胜国,闫建丽,汪巍,等.渤海海域辫状河储层构型界面与定量表征[J].特种油气藏,2017,24(4):88-90.
[9]刘钰铭,侯加根,王连敏,等.辫状河储层构型分析[J].中国石油大学学报(自然科学版),2009,33(1):7-11.
[10]陈玉琨,吴胜和,毛平,等.砂质辫状河储集层构型表征:以大港油区羊三木油田馆陶组为例[J].新疆石油地质,2009,33(5):523-526.
[11]王锐.辫状河厚砂体内部夹层的识别与分布特征[J].大庆石油地质与开发,2016,35(3):83-87.
[12]王石,万琼华,陈玉琨,等.基于辫状河储层构型的流动单元划分及其分布规律[J].油气地质与采收率,2015,22(5):47-50.
[13]岳大力,赵俊威,温立峰.辫状河心滩内部夹层控制的剩余油分布物理模拟实验[J].地学前缘,2012,19(2):157-160.
[14]李海燕,高阳,王延杰,等.辫状河储集层夹层发育模式及其对开发的影响:以准格尔盆地风城油田为例[J].石油勘探与开发,2015,42(3):364-372.
[15]于欢.辫状河储层内部构型精细描述及剩余油分布[J].大庆石油地质与开发,2015,34(4):73-77.
[16]余成林,李志鹏,熊运斌,等.心滩储层内部构型分析[J].西南石油大学学报(自然科学版),2012,34(3):19-22.
[17]孙天建,穆龙新,赵国良.砂质辫状河储集层隔夹层类型及其表征方法:以苏丹穆格莱特盆地Hegli油田为例[J].石油勘探与开发,2014,41(1):112-119.
[18]崔建,李海东,冯建松,等.辫状河储层隔夹层特征及其对剩余油的影响[J].特种油气藏,2013,20(4):26-30.
[19]杨少春,赵晓东,钟思瑛,等.辫状河心滩内部非均质性及对剩余油分布的影响[J].中南大学学报(自然科学版),2015,46(3):1071-1072.
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