Abstract

Sandy conglomerate reservoir has the characteristics of poor sorting, complex pore structure, heterogeneity, and so sandy conglomerate oil layer is difficult to identify. In this paper, based on symmetrical effective medium conductance theory and poor sorting of grains of sandy conglomerate, a symmetrical effective medium resistivity model for sandy conglomerate reservoir is established by dividing sandy conglomerate reservoir into three components, including a non-conductive matrix, gas and water. The log data is processed and interpreted with the proposed model, and the interpretation result compared with gas production test data. It shows that the model is applicable to evaluate the fluid property of sandy conglomerate reservoirs.

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