A scoping study was conducted to evaluate the feasibility of producing a tight oil reservoir. The subject reservoir was not included in the original development due to the lower rock quality. The team used a simulation model to evaluate the potential of this tight reservoir.

A detailed 4-million cell model was constructed for the study. The Assisted History Match tool (AHM) was used to auto-generate and auto-submit multiple runs in the process of evaluating key reservoir parameters, which helped speed up the history match cycle tremendously. Moreover, the in-house finite difference simulator could generate fluxes, and therefore a streamline simulation model was built. The streamlines could be displayed using software. The data gained from streamline models were essential in assessing the communication between injectors and producers in this tight reservoir. Injectors' placements were optimized based on this data and the most efficient injection plan was developed.

Initial results showed a commercial oil production with a 20-year plateau from the tight reservoir. Economics remained a major factor as many wells were initially required to achieve this rate. Through the use of streamline images and a different combination of well types, an optimum development plan was attained. Overall, the study showed that this tight reservoir has enough potential to be considered for future development.

The subject tight reservoir is part of a developed field where all infrastructures are in place. Adding a good level of oil production for 20 years is significant and will be very valuable.

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