Improving the future performance using simulation method by eclipse software program, the Habban field (block s2)‎: case study

الملخص EN

The solution gas drive system characterizes the decreasing reservoir pressure and increasing gas oil ratio, which requires searching for an appropriate development method to support reservoir pressure for the largest possible period.

This study was performed on Kohlane sandstone and fractured Basement formations, which are the main producing formations in Habban field (bluckS2).

The main objective of this research was to study the future reservoir performance with and without the optimization process by gas injection for a certain period 2008-2025 using the Eclipse program.

In this research the simulation model has been built, by using petroleum programs, based on the data of petrophysical, seismic, PVT and etc..,.

It was reached that at least 30 wells must be added which gives a cumulative oil production of 51.6MMstb, with a recovery factor of 10 %.

Moreover, when restrictions on field oil production rate, with oil rate restriction of 10000 stb, the cumulative oil production in 2025 will be 48MMstb.

Also when restriction on gas oil ratio GOR, it was reached that with GOR was 3000 scf/stb.

and 5000 scf/stb, the cumulative oil production in 2025 will be increased from 46MMstb.

to 53 MMstb.

The effect of gas injection on the future reservoir performance was determined, and it was reached that gas injection leads to increase cumulative oil production in 2025 to 68 MMstb, when GOR was 5000 scf/stb with a recovery factor of 13 %, and when decreasing GOR to 3000 scf/stb the cumulative oil production will be 64 MMstb.