复杂断块槽控重力流水道沉积油藏及剩余油分布研究
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摘要
重新认识处于开发中后期油藏的沉积环境、沉积微相及其特征,对于查明剩余油分布和挖掘剩余油潜力、提高采收率具有重要的现实意义。综合岩心、测井、录井、地震及相关测试资料,对黄骅坳陷塘34断块沙一段下部沉积特征和沉积模式进行了系统研究。结果表明:该区沙一段下部为重力流水道沉积,包括水道中心、水道侧翼、水道岔道口以及水道间等4种微相。讨论了沉积微相与剩余油的关系:重力流水道正韵律储层上部、水道侧翼、分支水道以及分支水道岔道口剩余油富集。
For re-understanding sedimentary environment , microfacies and the features of an oil reservoir at the mid-late development stages , it was great significance for clarifying the remaining oil distribution , the potential of remaining oil and improving oil recovery.Based on core , well logging , mud log , seismic and related test data , the sedimentary characteristics and patterns of the low member of Es 1 in the Fault Block T34of Huanghua Depression were systematically studied.The result indicates that low member of Es 1 belongs to gravity flow channel deposit , where 4microfacies can be classified , such as channel center microfacies , crotch of the distributary channel , channel margin and gravity channel microfacies.The relationship between microfacies and residual oil is discussed , the residual oil is enriched on the top of positive rhythm gravity flow channel , channel margin , distributary channel and crotch of the distributary channel.
For re-understanding sedimentary environment , microfacies and the features of an oil reservoir at the mid-late development stages , it was great significance for clarifying the remaining oil distribution , the potential of remaining oil and improving oil recovery.Based on core , well logging , mud log , seismic and related test data , the sedimentary characteristics and patterns of the low member of Es 1 in the Fault Block T34of Huanghua Depression were systematically studied.The result indicates that low member of Es 1 belongs to gravity flow channel deposit , where 4microfacies can be classified , such as channel center microfacies , crotch of the distributary channel , channel margin and gravity channel microfacies.The relationship between microfacies and residual oil is discussed , the residual oil is enriched on the top of positive rhythm gravity flow channel , channel margin , distributary channel and crotch of the distributary channel.
引文
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[2]王德发,张服民,孙永传,等.黄骅坳陷下第三系沉积相及沉积环境[M].北京:地质出版社,1986.
[3]黄传炎,王华,王家豪,等.板桥凹陷断裂陡坡带沙一段层序样式和沉积体系特征及其成藏模式研究[J].沉积学报,2007,25(3):386～390.
[4]吴崇筠.湖盆砂体类型[J].沉积学报,1986,4(4):1～27.
[5]朱筱敏,熊继辉.东濮凹陷轴向重力流水道沉积研究[J].石油大学学报(自然科学版),1991,15(5):1～10.
[6]王留奇,姜在兴.东营凹陷沙河街组断槽重力流水道沉积研究[J].石油大学学报(自然科学版),1994,18(3):19～25.
[7]姜在兴,赵澄林,刘孟惠.一种沿深水箕状谷纵向搬运的重力流沉积[J].石油与实验地质,1998,10(2):106～115.
[8]Moser R D,Moin P.The effects of curvature in wall-bounded turbulent flows[J].J Fluid Mech,1987,175(1):479～510.
[9]Shanmugam G.Ten turbidite myths[J].Earth-Science Reviews,2002,58(3-4):311～341.
[10]李顺明,沈平平,严耀祖.沾化凹陷桩西油田古近系东营组重力流水道的沉积特征及形成条件[J].沉积学报,2010,28(1):83～90.
[11]俞启泰.关于剩余油研究的探讨[J].石油勘探与开发,1997,24(2):46～50.
[12]李阳,王端平,刘建民.陆相水驱油藏剩余油富集区研究[J].石油勘探与开发,2005,32(3):91～96.
[13]林承焰,余成林,董春梅,等.老油田剩余油分布——水下分流河道岔道口剩余油富集[J].石油学报,2011,32(5):829～835.
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