Fine Reservoir Description In Fuyang Layers Of Shu 2 Block In Yushulin Oilfield

Shu 2 belongs Yushulin three blocks,commissioned in 1995,has been put into development since the water is difficult to expose the interlayer and a flat contradiction,the basis of well spacing large,fast production decline and many other issues.To further improve the geological understanding of the block,an accurate description of the distribution of residual oil and enhanced oil recovery,and therefore the block to carry out research fine reservoir description,provide accurate geological model for the encryption adjustment,improve the cost-effective use of remaining reserves.In this paper,by means of analyses of the observation of the rock core and well logging information of the shu 2,and the method of sedimentary cycle correlation and stepping control and being discriminatory of different facies is used to complete the comparison of the six skeleton profiles.Finally,we had achieved 182 wells fuyang fine reservoir classification and correlation and established block stratigraphic framework.Based on the synthesis of 172 synthetic seismogram,combined with the high-resolution coherence fault recognition technology,we had finished the describing the small fault of the multi-layer system by the well-shock combination in the work area.Taking the top surface structure of the reservoir group as the trend surface,and applying the single well layer at the top of the sand body of data,we had identified 25 positive microtectonics and 29 negative microtectonics in 7 main layers.Through the investigation and study,we had determined the sedimentary subfacies environment,and established the 4 types of subfacies and 15 types microfacies of log facies patterns and completed the depositional microfacies plane combination of 68 sedimentary units in the shu 2 block.The geophysical modeling of the three-dimensional reservoirs was carried out by computer-aided technology,geology and mathematics,and 64 sedimentary units were vertically matched and had established the facies-controlled model.Finally,the geologic method and development dynamic data were used to analyze.The remaining oil is divided into five categories,the major of which there are no injection type and one-way effect type remaining oil,and the longitudinal distribution is mainly distributed in F?61,F?72,Y?72,Y?61,Y?41 deposition units.Based on these research results,it can provide a solid geological foundation.