Geological Modeling Of Chang 6 Oil Reservoir Set In Panguliang, Jing'an Oil Field

Setting up a correct geological modeling that can descript the character of a reservoir is the core and purpose of reservoir description, the key of reservoir mathematical stimulation and dynamic forecast, the base of knowing the reservoir impersonally and truthfully and developing the reservoir efficiently and accurately.The paper takes the Pan'guliang Chang-6 Reservoir in Jing'an Oil Field as the example, using different theories and techniques of many subjects including sequence stratigraphy, sedimentary, petroleum geology, reservoir geology, petroleum reservoir engineering and so on, aiming at the reservoir geological character of less and quite less permeable property, severe heterogeneity of pore structure, great change of oil-bearing bed in plane and oil saturation being asymmetrical lengthways, taking "the exact and external geological study is the base of setting up a credible geological model." as the principle of this study, on the base of basic geological study, by using GMSS which is a kind of software to set up a geological modeling, set up the geological modeling of the Pan'guliang Chang-6 Reservoir in Jing'an Oil Field, and it shows the underground geological character correctly and externally, reveals the collecting rule of oil and gas, becomes the base of developing this reservoir efficiently and accurately.Production and main cognition:By using high-resolution sequence stratigraphy, compartmentalize and contrast the bed set of the Pan'guliang Chang-6 Reservoir in Jing'an Oil Field, distinguish three normal base-level cycle, build up and perfect high-resolution sequence stratigraphical trellis of single well or between different wells, overcome the deficiency of being controlled by sand thickness and interface being inaccurate, and make the compartmentalization and contrast become more scientific and reasonable.Recognize four kinds of microfacies in research area, including underwater distributive river course, estuarine bar, etc. The underwater distributive river course is preponderant, and it is the main reservoir in research area.The study on reservoir shows that the Pan'guliang Chang-6 Reservoir in Jing'an Oil Field has the pore structure of big pore and small throat, represents middle porocity and less permeability; has two kinds of interlayers including shale interlayer and calcareous interlayer, and they have different electric log curves character; and sedimentary and diagenesis are the main factors to lead the heterogeneity of this reservoir.By using clustering analysis and discriminant analysis, study on reservoir classification and the compartmentalization of flow unit, the results shows that the microfacies decides thedistribution of sand body, properties of matter, oil saturation, and the results of reservoir classification and the compartmentalization of flow unit. They are matching, for example, in the middle of underwater distributive river course has thick sand, good properties of matter and oil saturation, weak heterogeneity, and mainly belongs to I reservoir and A , B flow unit.Though studying on theories, techniques, and softwares about geological modeling, on the base of the geological study, set up the 3-D geological model of the Pan'guliang Chang-6 Reservoir in Jing'an Oil Field by using GMSS, reveal the 3-D distribution character of the research area structure, sand body, porocity, permeability, and oil saturation, and become the base of dynamic digital modeling in the future.Yan Lin (Mineral Prospecting and Exploration) Directed by Sun Wei (Professor)...