Practice different and effect of descent control considering factors in vuggy reservoirs,Tahe Oil Field

Reservoirs in the Tahe Oil Field are carbonate karst ones with active bottom water and strongheterogeneity.In the past years,oil field descent rate was over 25%.Reasons for the descent were clas-sified.From the aspects of geology,accumulation and oil recovery process,the main factor for the de-scent was found.Descent control considering different factors was carried out,reducing descent rate andimproving oil field exploration effect.