Reservoir Evaluation And Three - Dimensional Geological Modeling Of 72 - Well Area In South Section

The second largest petroliferous basin, Ordos basin, contain a lot of oil and gas,. In these area, there are greatly potential exploration and development of oil and gas. Thus, it has become one of the most important strategic areas of oil and gas exploration and development in the future. The aim of this article is to deal with low permeability and low porosity in the upper Triassic yanchang group of the ordos basin. At the same time, the complex of reservoir lithology, the strength of the heterogeneity, the character of the reservoir and the distribution on verity and horizon are hard to identify. And, the calculation of petrophysical parameters and the identification of fluid are difficult. In the end, we use reservoir incomprehensive evaluation and3D modeling to solve these problem.The article study the characteristic of Chang6in zibei oilfield, as the basin of well logging, mud logging, drilling, well testing, core analysis data and litho-electric experiment, based on stratum division. In these area, we carefully analysis reservoir lithologic features, reservoir space type and reservoir physical properties. By combining the conventional logging data, geology, logging and core analysis, we summary the logging response characteristics of Chang6group and establish the region reservoir recognition and the division standard. Secondly, under the foundation of reservoir types and pore characteristics, and as the basin of geological material, logging data, test data, YanHua analysis, production dynamic material of the basis, we study four systematically of low permeability and low porosity reservoirs of yanchang group. And we also analyzes all kinds of fluid identification method and its applicability, build the research area reservoir interpretation model and parameter calculation model and make reservoir log material second explanation. Finally, we use reservoir characteristics research, logging data and comprehensive explanation to build up the reservoir3D geological modeling. By well using logging data and geological material, we establish the reliable reservoir three dimensional attribute model from point to the line, the line to the surface, and then to3d geological bodies, and reservoir the comprehensive evaluation and favorable blocks of prediction systematic.The reservoirs comprehensive evaluation of low permeability and low porosity is the hot subject in the field of new frontiers. The research results will undoubtedly enrich and improve low permeability and low porosity of complicated sandstone reservoir log evaluation method in theory and application level, for reducing the research area and a similar gas reservoir exploration risk is of great significance.