A simple method for predicting recoverable reserves of reservoir;

Easy determination of abandonment pressure and recoverable reserves for gas reservoirs with water drive;

A method to predict volumetric sweep efficiency and recoverable reserves of water-drive oilfields;

oduction increase rate model for calculating recoverable reserves in super heavy oil reservoir.;

A statistical method for calculating the recoverable reserves during steam injection;

The simplest method for predicting recoverable reserve and its application in low permeability oil field.;

It is used for forecasting the middle or long-term production and recoverable reserves of oil-gas reservoirs.

With China's accession to WTO and implementing international operation strategy in oil companies, to establish an evaluation system of economic reserves suitable to the characteristics of oil exploration and development is badly needed in China.

Through analysis of water flooding characteristic curve t equations are derived for predicting reserves, oil recovery, integral water cut in the oilfields, regression method is used to calculate straight slope, intercept, which would be used to guide oilfield development and tapping the potential in the future.

According to the relative degree of uncertainty in reserves estimation,SPE/WPC classifies reserves as proved reserves,probable reserves and possible reserves.

A new approach to producing reserve calculation of fractured-vuggy carbonate rock reservoirs;