THE USE OF WATER FLOODING TO IMPROVE OIL RECOVERY BY USING RESERVOIR SIMULATION
Keywords:
Water flooding, oil, recovery, improvement, simulationAbstract
There are 18 oilfields in the northern, central parts and Gulf of Thailand which produce an optimalproduction rate of 130,000 barrels per day accounting for 20% of the consumption of Thailand. It isnecessary to do reservoir simulation to determine the most suitable and efficient patterns for individualwater flooding projects. The objectives of this study are: 1) to compile oil reservoir data in Thailand;2) to model oil reservoirs using “Eclipse office” software; 3) to determine oil recoveries and return oninvestments by various methods including primary recovery, conventional water flooding, and bottomwater injection. Three sizes of oilfields were modeled with the oil in place of 109, 29, and 5.8 millionbarrels respectively. Many producing and injecting well patterns were modeled using Eclipse Officein DMF office to run simulations in each oil field. The oil productions in primary recovery rangedfrom 20 - 23% with the present profit per investment ratio (PIR) of 0.50 - 0.62 respectively. The total oilproduction recovery with conventional water flooding was at 35 - 39% with the PIR of 0.50 - 0.88.For bottom water injection, the total oil recovery was at 40 - 48% with the PIR of 0.53 - 1.25. Theconclusion was that the bottom water injection method increased oil production and profits more thanconventional water flooding and the primary recovery method.
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