3D Geological Modeling Of Chang10Reservoir Of Gao52Block In Ansai Oilfield

Chang10reservoir is the consequent tendency of next reserve replacement of Ansai oilfield while the Chang101interval is the main productive zone of Gao52block in Ansai oilfield. At present, the sedimentation type, reservoir characteristics, filtration feature and other geologic feature of this reservoir are not so comprehensive and systematical. So, the research of dimensional model building of Chang101reservoir is the key factor to confirm the development position and its distribution law of the major reservoir and to enhance the per well production, head drilling design level of the further peripheral oil field and drilling success ratio.Based on the fine substrata division and correlation of Chang101oil layer of Gao52block in Ansai oilfield, this article studies the reservoir structure characteristics, plane distribution and its evolutionary law of every subzone sedimentary microfacies and the reservoir physical property features guided by oilfield development geology, logging technology, reservoir description, reservoir engineering and other science theory and relevant technology. The paper has been established log interpretation model of the Chang101reservoir parameters and lower limit of physical properties according to the development quiescent and dynamic information. It also makes qualitative and quantitative analysis of the reservoir heterogeneity. The author construted there dimensional geological model of sedimentary microfacies, framework of sandbody, porosity and permeability of Chang101oil layer of Gao52block on the basis of three principles such as time constrained modeling, modeling controlled by facies to combine definite modeling with stochastic modeling according to the method of multiple information cooperative modeling by means of the modeling software of Petrel as well as geological statistics.The article also gives the calculation of reserves. The research was used as not only the base of later numerical simulation and the basis of study, but also the oilfield later development deploy and next reservoir adjustment and tapping the potential.