The Research Of Sedimentary Facies And Physical Property Of Reservoir Of P Oil Layer In Xu30 Area,Yushulin Oilfield

Putaohua layers is one of the best physical property and the biggest production oil bearing series in Yu Shu Lin Oilflied. The main object of study of this paper is Xu30 Block which is the highest reserves and the most continuous layer seseries.The purpose of this paper which deeply study on sedimentary micro-facies and reservoir physical property of study area is providing the geological basis for effective development.Based on relevant research results of previous researchers,according to the analysis of heavymineral assemblage,mudstone,sedimentary micro-facies and sand bodies distribution characteristics and combined with the regional tectonic and geological background closely, we did a research on the provenance of Xu30 Block Putaohua formations. From the research,we have conclusions that there are two provenance systems which are the northeast system and the north system,and this block is controlled by the northeast provenance.Only the east of the block is controlled by the north provenance system.Depositronal environments and sedimentary facies are the important factors of reservoir development and oil-water distribution.According to many geological data,this paper identifies that the sedimentary facies types of Xu30 Block are the inner front surfaces sedimentation of delta and the outer front surfaces sedimentation of delta,and then sets up logging's micro facies models by the comparison of rock-electric,draws nine units plane sedimentary micro-facies charts and single sandbody distribution charts,reveals that the spatial distribution of the causes of single sandbody,distinguishes the single oil sandbody.Reservoir physical property is an important parameter which reflects the rock of storing and carrying fluid.By the statistics and analysis of porosity and permeability sample's data,this block is mainly mesoporosity and middle-low permeability reservoir. Sedimentation is the important factor of effecting sand porosity and permeability.Based on the single sandbody scrutiny,oil-water logging interpretation data,test oil result and structural feature,we did a research on the relation between sandbody and oil-water,mastered the vertical and plane distribution of oil-water,optimized the favorable area that are Shu 122 Well Area and the northeast of Xu30-3.