【摘要】 以南堡1号构造东营组一段油藏为例,针对工区油藏特征和现有资料情况,确立地震、测井和地质综合一体化油藏描述和评价思路。通过井-震结合,搭建层序地层格架,进行层序界面解释和层序约束叠前反演,建立工区储集层地质概念模式;利用储集层地质建模软件,建立等时地层框架构造模型和储集层定量地质知识库;通过对比优选随机建模方法,设计9个实现模型,开展确定性条件约束随机建模的沉积相模拟和相控物性模拟,进行油藏储量估算和评价以及主要油砂体精细描述。结果显示,东一段油藏为一受构造控制的层状边水油藏,其砂层厚度大,物性好,发育多套油水系统;9个实现模型所估算的地质储量是一组服从某种统计概率分布的蒙特卡洛实现,利于合理评价油藏储量规模。更多还原

【Abstract】 Taking the Member 1 oil reservoir of Dongying Formation in Nanpu Sag as an example,this paper puts forward an integrated study method for oil reservoir description and evaluation.Firstly,with the correlation of seismic,log and geological data,the isochronous stratigraphic framework of the oil reservoir is built up,sequence boundaries are interpreted,the sequence constrained prestack seismic inversion is processed,and a geological conceptual model of reservoir is established.Secondly,with the results of prestack seismic inversion and the Petrel software,the structure model of the isochronous stratigraphic framework and the quantitative geological database are built up.Thirdly,through contrasting and selecting the most reasonable method of stochastic modeling,the reservoir facies modeling and the petrophysical modeling with the constraint of facies models are processed,the oil geological reserves are computed and evaluated,and some oil reservoirs are described finely.The study shows that the Member 1 oil reservoir is a layered,structure-controlled,edge water drive reservoir.It has thick sands,good properties,and complicated oil-water systems.The geological reserves estimated by the 9 designed implementation models are the realization of Monte Carlo methods and conform to a certain probability distribution.The models are favorable for the reasonable evaluation of reserves.更多还原