WATER ALTERNATING GAS INJECTION FOR ENHANCED OIL RECOVERY IN THE PHITSANULOK BASIN
Keywords:
Water alternating gas injection, computer reservoir simulation, Phitsanulok Basin, optimized technical parametersAbstract
There are many methods that can be applied to increase recovery from hydrocarbon reservoirs. Water alternating gas injection (WAG) is one of them, which combines the advantages of the waterflooding and gas injection methods. Repetition of the WAG process can further improve the sweep efficiency on a micro scale. In this study, application of WAG was studied for conditions of an oil field inthe Phitsanulok Basin by reservoir simulation using Eclipse 300. The sandbox model with botha production and an injection well is set up at 5 MMSTB. The miscibility flood is also set up for the WAG reservoir simulation setting. The reservoir was set the bottom hole pressure of production above2165 psia for hydraulic pressure and 90% water cut as limitation in producing period. Results from the simulation testing indicate that the cumulative oil production was 3.35 MMSTB (4.44 MMRB)at the end of production.
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