Welllog Identification Method Of Water Flooded Layer In E3~1 Reservoir Of Gasikule Oilfield

In this paper the Gasikule oilfield reservoir as an example,the study area is in the high water cut stage,recovery rate decreased year by year.Make full use of the remaining oil saturation logging data,taking into account the use of development geology,laboratory analysis and reservoir production performance data,combined with logging response characteristics of water flooded layer evaluation of water flooded layer,using different logging and dynamic data,summed up the enrichment of remaining oil in the study area.Mainly has the following main conclusions.After remaining oil saturation nuclear log of cased hole are sufficiently researched and evaluated,log response of water flooded layer in GaSi Oilfield are recognized,and relative merits of different welllog method are also evaluated,then a full suite of PND-S and PNN data interpretation mode fit for Gasi Oilfield are established.After different block are studied with the integration of geology,According to the geological and dynamic data of production logging data to PNN data aided judgment,According statistics of well which are tested by PNN,Enrichment regularity of remaining oil in Gasi Oilfield is concluded,that is remaining oil mainly enrichs in north block of GaSi Oilfield according to tabular surface distribution,and from vertical layer distribution the result is remaining oil mainly enrichs in main layer such as I-4,I-6,IV-4,IV-5.