Study of carbon dioxide drive in Pu 1-1well and pilot experiment result analysis of Sha 1 reservoir in Pucheng Oilfield

Based on physical properties of Sha 1 reservoir, study on carbon dioxide drive, oil phase, pressure composition, and carbon dioxide injection pressure was done. In order to determine reasonable production method, experiments were done to select an optimal method such as continuous injection of carbon dioxide, alternative injection of gases and water, and so on. Lab experiments showed that carbon dioxide drive was feasible in Sha 1 reservior. Field test was done based on lab simulation and carbon dioxide drive experiment, increase was 1 150 and results Showed oil production increased by 8.5 t per day, and accumulative oil t, which provided new approach to enhance recovery ratio for high water cut reservoirs in Pucheng Oilfield.