Evaluation and study of recovery rate prediction method for newly-proved reserves

For the newly-proved reserves,dynamic methods are not qualified to predict recoverable quantity due to the lack of production data.The methods used most widely include analogy,empirical formula and empirical value methods.It is difficult and believed to be the technical key point to accurately predict recovery rate in review of the calculation of newly-proved and recoverable reserves.According to the current situations and problems of recovery rate prediction,it has been presented in this paper the merits and demerits of all kinds of methods for recovery prediction.The selection-order of these methods is from empirical value method (small field),analogy verification method (medium field),empirical formula method,comprehensive geological method to numerical modeling for further verification (big fields).The analogy series and empirical value standards applicable to the SINOPEC oil fields have been built,providing supports for the recovery rate prediction of newly-proved reserves.