关键词: 储层, 渗透率, 孔隙度, 流动单元, 孔隙结构, 测井解释, 数学模型

Abstract: The conventional interpretation method for permeability was based on exponential relation, which neglected the difference of filtrate character among different flow units and lacked reliability. An integrated interpretation method for permeability of different flow units was proposed. The different expressions of permeability were established by the use of Kozeny-Carman equation. In consideration of log interpretation, the partition and distinguish of flow units were made by the statistical ways such as cluster analysis and regression analysis. The mathematical models for determining permeability were established. Two indexes for evaluating permeability were presented on the contrast of error between the new method and conventional method. The integrated interpretation method was successively applied in some districts of Daqing Oilfield.

Key words: reservoir, permeability, porosity, flow units, pore structure, log interpretation, mathematical model