A NOVEL METHOD FOR DISCRIMINATING FLOW UNITS OF THICK PROLUVIAL FAN CONGLOMERATE RESERVOIR——TAKING BADAOWAN FORMATION IN KARAMAY OILFIELD AS AN EXAMPLE

In order to improve the depiction of reservoir heterogeneity of thick proluvial fan reservoir,a novel method for classifying flow units is presented.Based on FZI histogram and FZI cumulative frequency curves of cored well samples,three types of flow units can be recognized qualitatively,which are the basis for discriminating flow units quantitatively.Then,Integrating parameters of reservoir quality,lithology and pore structure into the cluster and discrimination analysis,a quantitative model is deve-loped to define flow units in uncored but logged wells.Finally,by use of stochastic modeling method,the distribution of flow units between wells is simulated,which honors the reservoir geology reasonably and accords with production well performance properly.The results show that this method is applicable and very effective to reveal the heterogeneous characteristics of thick proluvial fan reservoir.