Abstract:

Keshang formation, Liuzhong area, Karamay oilfield is a fault block oil reservoir with serious heterogeneity in the sandstone and conglomerate reservoirs, aimed at the association characteristics and the layerdividing and correlation scheme of alluvial fanfan delta sandbodies in the area, as well as by applying pore geometry and flow zone index, the classification and evaluation of the flow units units in Keshang formation are carried out, and the difficulty of reservoir evaluation is solved. The flow unit characteristics in the area are distinctly different from the ones in alluvial facies and delta facies, in the research area, there are developed typeⅠ, Ⅱ, Ⅲ, Ⅳand Ⅴflow units, among them, there is a gradual change and splicing relation, the units occur in turn. The highgrade flow unit mainly exists in the middle part of the area, and the flow units in southwest and south parts of the area are relatively lowergraded. The research results of flow units can guide progressive exploration and exploitation.

Key words: fault block oil reservoir, flow unit, connectivity body, barrier of flow through porous media, FZI, Karamay oilfield