大港滩海张东开发区沙河街组层序地层格架与储层预测
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摘要
通过综合分析地震、测井、录井和岩心等资料,确定了大港滩海张东开发区沙河街组层序地层格架。在层序地层格架约束和储层特征重构的基础上,选择随机模拟地震反演方法进行储层预测;结合储层砂体展布和试油试采资料,进行了油藏特征分析。综合研究认为,在张东开发区古近系可识别出3个三级层序,其中沙三段相当于层序Ⅰ,沙二段相当于层序Ⅱ的低水位体系域,沙一段下亚段相当于层序Ⅱ的湖侵体系域。沙河街组油藏具有受构造和岩性双重因素控制的复式油藏特征,其主力储层为沙三段的底部和沙二段。
Analyzing the data of seismic,logging,mud-logging and core,the sequence stratigraphy framework of Zhangdong development area is determined.Constrained by sequence stratigraphy framework and based on reservoir characteristic rebuilding,the stochastic simulation seismic inversion method is chosen to predict reservoirs.Combining the distribution of sandbody,oil test and production test data,the reservoir characteristics are analyzed.Comprehensive research shows,three 3rd-order sequences are identified in Paleogene in Zhangdong development area.The first sequence is the Sha3 Member,and the Sha2 Member and the lower Sha1 Member correspond the low system tract and the transgressive system tract of the second sequence respectively.The reservoirs mostly locate on the bottom of the Sha3 Member and the Sha2 Member,whose characteristics are multiple con-trolled by tectonics and lithology.
Analyzing the data of seismic,logging,mud-logging and core,the sequence stratigraphy framework of Zhangdong development area is determined.Constrained by sequence stratigraphy framework and based on reservoir characteristic rebuilding,the stochastic simulation seismic inversion method is chosen to predict reservoirs.Combining the distribution of sandbody,oil test and production test data,the reservoir characteristics are analyzed.Comprehensive research shows,three 3rd-order sequences are identified in Paleogene in Zhangdong development area.The first sequence is the Sha3 Member,and the Sha2 Member and the lower Sha1 Member correspond the low system tract and the transgressive system tract of the second sequence respectively.The reservoirs mostly locate on the bottom of the Sha3 Member and the Sha2 Member,whose characteristics are multiple con-trolled by tectonics and lithology.
引文
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[3]彭传圣,王永诗,林会喜.陆相湖盆砂砾岩体层序地层学研究———以济阳坳陷罗家—垦西地区为例[J].油气地质与采收率,2006,13(1):23-26.
[4]宋美虹.塔河油田4区奥陶系碳酸盐岩潜山油藏储层预测[J].油气地质与采收率,2005,12(4):23-25.
[5]Christensen S A,Dalgaard TE,Rosendal A.Seismically driven res-ervoir characterization using an innovative integrated approach:Syd Arne field[C].SPE103282,2006.
[6]贾承造,赵文智,邹才能,等.岩性地层油气藏勘探研究的两项核心技术[J].石油勘探与开发,2004,31(3):3-9.
[7]许淑梅,翟世奎,李三忠,等.歧口凹陷滩海区下第三系层序地层分析及沉积体系研究[J].沉积学报,2001,19(3):363-367.
[8]张学芳,董月昌,慎国强,等.曲线重构技术在测井约束反演中的应用[J].石油勘探与开发,2005,32(3):70-72.
[9]慎国强,孟宪军,王玉梅,等.随机地震反演方法及其在埕北35井区的应用[J].石油地球物理勘探,2004,39(1):75-81.
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