This project is being conducted in two phases. The objective of the first phase is to characterize the reservoir using advanced evaluation methods in order to assess the potential of a CO2 flood of the target reservoir. This reservoir characterization includes advanced petrophysical, geophysical, geological, reservoir engineering, and reservoir simulation technologies. The objective of the second project phase is to demonstrate the benefits of using advanced seismic methods for the monitoring of the CO2 flood fronts.
Schlumberger Data & Consulting Services - Pittsburgh, PA
New Horizon Energy - Traverse City, MI
During the 1970s and 1980s, a number of Silurian Reef oil fields were discovered in the northern and southern flanks of the Michigan Basin. These fields have produced over 1 billion barrels of oil to date and are in the late stage of their primary productive life. EOR projects in these fields using CO2 injection guided by 4-D seismic monitoring will ensure that the maximum remaining reserves are recovered. This technology also will apply to monitoring CO2 sequestration projects in the future.
The project has established a mappable correlation between low instantaneous frequency and high porosity. This relationship has been supported by the wavenumber study conducted with the depthed volume. This relationship will be tested in the near future when a new borehole will be drilled into the reef. Once its location has been determined the porosity the borehole will encounter will be predicted with this technique. Should this relationship be proved, it will allow the porosity distribution through these reefs to be mapped accurately. Reservoir simulations needed to optimize the field’s CO2 injection parameters then can incorporate seismically detected porosity volumes to predict CO2 migration in carbonates. The final report will discuss the details of the project work.
If it is confirmed that instantaneous frequency can be used to accurately predict the distribution of >5% porosity through-out these reefs, this will allow for highly accurate reservoir simulations and greater reserve recoveries, thereby resulting in the most optimized enhanced oil recovery (EOR) projects possible. Monitoring of CO2 floods will result in the ability to modify the injection parameters to recover more oil and sequester more CO2.
Project milestones include the following:
This project has been completed. Due to its size (57MB), the final report is available upon request. See contact information below.
$7,085,519 (78% of total)
Due to the size of the PDF file (57MB), the final report is available upon request.