Research on prediction method of subsequent water flooding index of an oilfield

With the gradual end of polymer flooding in blocks type II oil reservoirs, scale subsequent water production and injection fields is increasing. As can be seen from production, due to different factors such as reservoir properties injection-production rates, various indicators block vary greatly, which brings difficulties prediction later stage. Therefore, it urgent carry out follow-up research on change law water-flooding related indexes provide scientific basis for index control. Based a large number actual data field, influencing are analyzed, variation field made clear. By fitting successive over years, empirical formula accords with characteristic curve decline an oilfield given.