Maling Oilfield Wood34Detailed Reservoir Description

Maling Oilfield Wood Area34is located at the west south of the Ordos Basin in northern Shaanxi slope, the development sequence of Jurassic Yan’an Formation reservoir group. With the continuous deepening of oil field development, the development conflicts increasingly prominent, basic geological research in its infancy, and to keep up with the needs of reservoir development.This study use of modern sedimentary lithofacies paleogeography, sedimentary petrology, reservoir geology, development geology and geostatistics, a multi-disciplinary theories and methods to collect regional data of the study area, the field core observation combined analysis and testing tools, wood area34extended10stratigraphy, structure, reservoir depth research, and use PETREL software, a3D geological model of the study area, following some knowledge.1, The area of Mu34is located on a structural nose Long, by former Jurassic ancient landform and differential settlement of the combined effect of showing the central, surrounded by lower, more gentle north eastern part of the low nose uplift, and the vertical good inheritance.2, combined with the actual purpose of the study area layer will be extended to10division of the extension101, extension102, extension103; geological, geophysical logging, data analysis, to determine the deposition of the study area are fluvial, and further divided into braided fluvial facies, broken down out of the floodplain, the heart beach and river microfacies.3, the study area extended10lithology is mainly gray, gray-green giant-coarse, coarse, medium-coarse, coarse-medium-grained feldspathic quartz sandstone and lithic quartz sandstone-based; pore types intergranular pores, feldspar dissolution porosity, debris dissolved pores and intergranular holes, etc.; diagenesis mechanical compaction, pressure solution, cementation and dissolution.4, the degree of heterogeneity of the10reservoirs of the district extension is weak, and belong to heterogeneous reservoirs; this reservoir is weak speed-sensitive, Weak sensitivity, weak salt sensitivity, weak acid sensitive, weak base sensitive.5, The10-story, wood, area34extension in Hejian mound, the oil resistance of ancient landforms and lithology control for complex oil and gas reservoirs.101of the top extension of the main oil-bearing strata, and oil saturation is higher, the lower part of the extension102and103for the edge and bottom water, belonging to the water layer. In short, the purpose of the study area layers typical tectonic lithologic reservoir, recoverable layers located in the extension10at the top.6, PETREL software well model for the study area, the layer model, the three-dimensional sedimentary microfacies model and microfacies control to establish the model of three-dimensional properties. Geological Correlation test found that the model and the basic geological features of the area to the results of high similarity, a true reflection of its characteristics.