Delieate Reservoir Description In Fengfu Chuan Oil Field

The strcture of FengFu Chuan oil field is based on the east of northern shaanxislope.Triassic Yanchang Chang2, oil-bearing is the main purpose of exploration and development Department in FengFu Chuan. Its lithology mainly contains a set of light-grey,grey,grey-green massive fine sandstone.Chang2reservoir in FengFu Chuan oil field is the research object in this paper.Taking the high resolution sequence stratigraphic theory.This paper Mainly carries outthe reservoir evaluation logging fine stratigraphic division and correlation of structural features, and reservoir sedimentary characteristics of the geological constraints, and two interpretation, reservoir research of3D geological modeling, finally carried out the comprehensive evaluation of reservoir. Research shows that, the Chang2oil-bearing formation Chang21can be divided into4small layers, of21strati-graphic correlation profile established fine characterization of the vertical and horizontal distribution characteristics of horizontal strata; on the region of eastern and western local area, no secombined characteristicsof small layer sand structures at the top,vertical small layer sand body the top structureis the combination of inheritance and nose difference of; The Chang21mainly braided river sedimentary, sedimentary micro facies mainly include river,river; chang21lithologyis mainly composed of a set of light gray, gray, gray green massiv-e fine sandstone, effective porosity and permeability for an average of13.5%for an average of8.4*10-3μ m2, from top to bottom material has gradually become a good trend; Based on the "fourproperties ’ relations" study to establish the shale content, porosity, permeability and oilsaturation interpretation model is carried out in39wells of fine logging interpretation; reservoir of the area mainly showed strong medium heterogeneity, interlayer is the main type of compact inter layer, muddy intercalation and argillaceous interlayer, long the strongest21-3layer heterogeneity, chang21-4and chang21-2in second place; Small layer structure model well describe and reflect the reservoir3D micro structural features of research to establish; litho facies model reveals subtle features and trends in the vertical lithofacies and sedimentary study area phase; reservoir attribute model well reflects the objective layer porosity,permeability and the study area with the characteristics of3D oil satura tion of reservoirs in the space; region can be divided into three kinds, the Chang21reservoir reservoir to class II and class I based, followed by the class III reservoir.