The Technology and Methodology of Reservoir Geological Modeling in the Evaluation Phase of Oilfield Development

摘要

The evaluation phase of oilfield development refers to the period from the discovery of an oilfield to the development. In this time, only one or a few wells have been drilled, and usable data is very limited. But in order to develop the oilfield successfully, a geological model, which can reflect the basic character of the reservoir (conceptual model) must be built. Thus, a couple of conflicts between data and study come out. Over past 10 years, many new oilfields have been discovered in China, especially in western China, and the geological conditions and usable data are very different from each other. Through 10 years of research and application in the new oilfields, many new technologies and methodologies in geological modeling matched to different oilfields with various geological characteristics and data have been developed, including: Based on detailed geological and sedimentary researches, we integrate all useful data (seismic, logging, geologic statistic and so on) to build geological model and to evaluate the reservoir heterogeneity.