THE MECHANISM OF WATER FLOODING GAS CONDENSATE RESERVOIR

At present,the methods of developing the gas condensate reservoir are mainly depletion and gas-injection. Because of being restricted by lots of applied conditions, the use of gas injection is restricted; the depletion leads to lower recovery of condensate oil and the effectiveness of development is worse to gas reservoir with the high content of condensate oil. Water flooding is a new developmental method for gas condensate reservoir, the research on that is few, so it is worth probing. On the basis of the in-house core flooding experiment of an abandoned condensate gas reservoir of Banqiao gas condensate reservoir by water flooding, the feasibility and mechanism of water flooding gas condensate reservoir are explored. The results of the experiment shows that the improved recovery of condensate oil and gas are 3.39% and 10.11%, respectively the effictiveness of water flooding at high speed is better than that at lower speed, the effictiveness of water flooding at lower pressure is better than that at higher pressure.