Publications

The SK field is a carbonate oil reservoir with current oil production decreased from ca. 28,000 BOEPD to around 10,000 BOPD due to highly decline rate over the last 5 years. The objective of this study is to identify and propose CO2 Injection in order to sustain and increase the matured oilfield production & oil recovery in the massively fractured carbonate reservoir. Methods, Procedures, Process The challenge of this study is to develop a representative model with limited reservoir data by using some correlations. The reservoir is also quite complicated since the production data indicated that there are some fractures and high permeability streaks. Moreover, the well was completed with a poor-quality cement bond and this presented a challenge in the history matching process as well. The other challenge is how to obtain the precise Equation of State (EOS) model in order to have a representative reservoir model with a fast running simulation process. Results, Observations, Conclusions From this model and simulation study we found that this CO2 EOR Injection can increase the recovery factor of this field by + 7-9% of hydrocarbons in place. This study indicates an increase of Oil Recovery by 4.03 % over the baseline (or 11.96 MMbbl additional oil recovery by applying this technology to this oilfield) requiring the drilling and completion of 4 additional infill production wells and 2 injection wells. This paper will discuss the process of the simulation model from static modelling, dynamic modeling, EOS modelling, History matching up to the oil and gas forecasting by using a Compositional Model. Therefore, in order to boost the running time of the simulation model, we are using 8 Core computer hardware to run the model. There are many interesting what we found during our study by using and by applying miscible CO2 EOR injection with this model which can increase the oil production by up to 18.11%, eventhough this is a carbonate with strong water drive reservoir