RESERVOIR CHARACTERIZATION OF SELECTED DUNDEE FIELDS
THE MICHIGAN BASIN
D.O.E. CLASS II - SHALLOW SHELF CARBONATES

Oil and gas well data set:
Digital data set consists of 8526 wells with latitude and longitude locations, reference datum (usually ground elevation or Kelly bushing), formations tops from the glacial drift cover to the bottom of the hole. A total of 4785 of these wells penetrate Dundee or deeper horizons. Initial reported production is recorded for each producing well. The following maps have been produced for 30 selected fields in the Michigan basin.
1. Base map with well locations, well completion type, and permit number.
2. Structural countour map on top of Dundee Formation-subsea.
3. Structural countour map on top of porosity zone-subsea.
4. Isopach map of Traverse Limestone (unit immediately overlying Dundee Fm.)
5. Initial production contour map before stimulation treatment.
6. Initial production contour map after stimulation treatment.
7. Field map showing locations of "stick" cross sections (at least 2 cross sections per field).
8. "Stick" cross sections across the field showing top of Dundee, top of porosity zone and total depth of each well in the cross section.
Well production history data set:
This is a Microsoft Excel spreadsheet with annual field production statistics and well status data. The data set includes:
1. year
2. number of producing oil wells
3. number of producing gas wells
4. new wells drilled during the year
5. wells abandonded during the year
6. total annual oil production
7. total annual gas production
This Excel spread sheet data has been loaded into a plotting software called PSI-PLOT to produce:
1. Production history curves (decline curves).
2. Well status history curves (producing wells, new wells drilled,wells abandonded).
Electric log data set:
This dataset currently contains 342 wells with various digitized log curves. The logs digitized include some or all of the following:
Gamma Ray , Caliper ,
Density , Photoelectric Factor,
Neutron , Compensated Neutron Porosity,
Microsperically Focused Log , Dual Lateral Log,
Sonic , Dual Induction ,
Additionally, 194 more logs have been collected and will be added to this data set. These logs are mainly from older wells and are mostly Self-potential (SP) and Resisitivity (RES) logs.
Calculations from this digital set have produced various plots of the log data including:
1. Pickett Plot for determining water saturations.
2. Porosity/density crossplots for determining lithology.
3. Digital replotting, rescaling, and normalizing various log traces.
4. Calculations of true rock (Rt) and water resisitivities (Rw).
Field description data set:
This data set contains all available information about the general geology, production practices, production history, field development, and engineering parameters for each field.
Geologic samples data set:
All available data plus new information generated during this project for mineralogic, petrographic, lithologic and isotopic properties of cores and samples form in and around each of the selected fields. Analyses include:
1. Core or sample (cuttings) descriptions.
2. Thin section analyses based on point counts.
3. X-ray diffraction analyses for mineralogy.
4. Scanning electron microscope imaging or grains, matrix and porosity. Energy dispersive X-ray determination of elemental compositions of rock materials.
5. Oxygen and carbon isotopic analyses of selected samples.
6. Quantitative porosity and permeability analyses (conventional core analyses).