Reservoir Characteristics And Dominant Channel Identification In Jin 16 District

When the oil fields is in a high moisture content at the late development stage, because of severe long term enhanced water flooding, reservoir pore structure changes and forms secondary high capacity channel. The injected water along the high capacity channel ineffective cycle in the formation of high capacity channel, so that the other parts of the reservoir hard efficiency, seriously affecting the efficiency of oil displacement, resulting in residual oil saturation significant differences in the plane.The injected water channeling and well premature flooding has seriously hampered the crude oil exploitation. Once oil field development in the high moisture content, the existence of the high capacitychannel makes other measuresto increase production is also more difficult to achieve,The study area of the work is the main part of Xinglongtai reservoir named Jin16block, it is the main selective mining area. From1978it gone through the basic well construction,expand the selective mining area, subdivision layer, adjusting encrypting, four times large-scale adjustments. Through years of injection development, the region has entered a double high development stage, the injected water washed along the high capacity channel resulting ineffective channeling. The chemical flooding test wells in2007in non-chemical drive target layer, revealed the block still have some potential for water flooding. However, the distribution law of the dominant channel in the plane, vertical, layer is extremely complex, seriously impact on the effect of chemical flooding..With geology, drilling, logging, core analysis, oil testing, logging data of Jin16blocks, and multi-disciplinary, multi-means of comprehensive analysis methods, we analysis and summary the type of reservoir space and the physical property of the study area, established the computational model of porosity, permeability and water saturation, handled and interpreted well log date of46wells, got porosity, permeability and water saturation static parameter values of each well, combined with nearly two years changes of production data of the productive wells and injected wells, we carried out in deeply analysis.Then based on oxygen activation logging and racer logging, we got the dynamic characterization of the dominant channel.Finally, from the point to line, line to a plane, surface to a three-dimensional geological body, with dynamic static parameters of the production restricts the porosity, permeability and water saturation to establishment a reliable3D reservoir property model. Know the distribution of dominant channel of the Jin16block, support the research of dominant channel how to effect the binary driving and the relevant stratagem.