Research on Flow Units and Residual Oil Distribution of District 8 Conglomerate Reservoir in Kelamayi Oilfield

摘要

The study of reservoir flow units can help to understand underground oil and water flow regularity and the distribution of residual oil. In this paper, the authors divided the sandstone and conglomerate reservoir of block ― 8 in Kelamayi oil ― field into four types flow units by means of gray system theory, based on the parameters such as flow zone indicator, porosity, permeability, shale content, grain ― size median, etc. Meanwhile we discussed in detail the main characteristics of each flow unit, combined with the actual of geology and production situation in the area, analyzed the relationship of flow unit and produced fluid, as well as the distribution of residual oil, finally pointed out that the flow units Ⅱ and Ⅲ are the enrichment distribution zones of the residual oil in the field.