Summary
Near-shore oil reservoirs have become significantly depleted, forcing oil
companies to explore deep-sea reservoirs with huge investments and the latest
technology. However, these projects are often risky. Thus, the optimal solution
is to explore shallow sea oil fields before proceeding to deep, high-risk
areas.
The Lower Miocene reservoir of the White Tiger field is a sedimentary
reservoir with high heterogeneity and complex geological characteristics. This
reservoir was discovered 22 years ago. There is an urgent need to study
procedures for an increased and maximum oil recovery. A detailed geological
understanding of the reservoir, along with a reservoir simulation, is needed to
gain a detailed reservoir description and determine the optimal recovery method
for this oil reservoir. These are essential to having a successful operation,
as well as reducing uncertainties and improving the efficiency of oilfield
management.
With a large database collected from initial production stages of over 50
wells, the authors developed an integrated static and dynamic workflow to
forecast oil production under several production scenarios for this reservoir.
These integrated results served as input data for simulation with
IMEXTM, which will be useful for the economical and technical
evaluation of this study. In addition, the authors introduced history matching
and pointed out the main reasons for the significant errors between actual data
and simulation results. Based on the reservoir modelling, the authors optimized
the wells? network locations and obtained good results in oil recovery. The oil
recovery factor increased from 24.21% - 37.26% for the Lower Miocene reservoir.
Specifically, oil recovery for the Southern dome structure was increased from
14.83% - 33.76%.
© 2010. Society of Petroleum Engineers
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History
- Original manuscript received:
17 March 2010
- Meeting paper published:
17 June 2009
- Revised manuscript received:
13 March 2010
- Manuscript approved:
17 March 2010
- Published online:
24 May 2010
- Version of record:
5 May 2010
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