New predicting method for fluid productivity indexes

The predicting method for conventional production indexes (PI) has good effect on the new wells in new blocks. As the old block has been produced for a long time, the oil characteristics and other parameters of the block change greatly. As a result, the use of conventional PI predicting method is limited and the predicting results are not so accurate. Based on the pseudo-steady production capacity equation of circular closed reservoir, combined with the production data of oilfields, a new predicting method is developed. Also, the result based on the new method is compared with that of the conventional one, which shows that the new method is more accurate.