Reservoir Characterization Of Jiyuan Oilfield Yuan 48 Chang4+5,Chang6

As the head of Jiyuan Oilfield per 48 4 5,6 long rolling development of the reservoir, exposing a series of questions, such as element 48, lower part of the region well network adaptation, and strengthen and promote effective water and control water-stable oil contradictions, injection control difficult. This is largely due to a clear understanding of geological conditions caused. Therefore it is necessary to use detailed reservoir description techniques, re-understanding of the reservoir, and the establishment of three-dimensional geological model, provide for continued strong stable geological foundation.Based on the comprehensive geological data, log data, seismic data and other information based on, first to fine stratigraphic correlation and structural characteristics; then microfacies, reservoir heterogeneity and flow units, reservoir characteristics and complex calculation of reserves; final results of the above, and use stochastic modeling techniques, a perfect three-dimensional geological model of reservoir fine.Purpose of this study area will be divided into 4 layers total of 8 single small layer of sand body. Deposited on the area are meandering river delta front, the main type of favorable sedimentary facies of underwater distributary channel and mouth bar. Storage layers, the layers and plane heterogeneity to the main weak; interlayer growth instability. Single sand body oil flow unit A class and B class to the main flow characteristics of the reservoir is relatively uniform. Intergranular pore types and intergranular pore dissolved pore, the local micro-cracks are well developed. Of District 45 and a low long reservoir type 6 hole-low permeability reservoir rock. Oil sands are mainly distributed in a long 45-22-1,45-22-2, and long long 6-1-1 sand bodies. Calculated with the volume of the study area reserves, oil overlay area 26.5km2, the total geological reserves of 1569.42 x 104t, dissolved gas geological reserves of 15.41×108m3. In the layered, sedimentary and reservoir studies, based on the realized using three-dimensional model of reservoir distribution, including the phase model and the permeability, porosity, oil saturation, and NTG and other attributes model for reservoir simulation research remaining oil distribution research and development adjustment programs in developing geological basis.