TENSLEEPMINNELUSA RESERVOIR CHARACTERIZATION

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TENSLEEP/MINNELUSA RESERVOIR CHARACTERIZATION

• Peigui Yin
• Shaochang Wo
• Enhanced Oil Recovery Institute
• University of Wyoming

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Tensleep/Minnelusa/Weber Reservoirs
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Bighorn Basin
Powder River Basin
Phosphoria- Tensleep
0.9 MMBO
Minnelusa
Tensleep
6.8 MMBO
2.9 MMBO
Great Green River Basin
Wind River Basin
Tensleep
Tensleep
0.9 MMBO
0.9 MMBO
Tensleep/Minnelusa Oil Production in 2005
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Tensleep Production
Minnelusa Production
Water Cut ()
Recovery Factor ()


High Water Content
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Core 19 Outcrop 16 Thin Section 405
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Sequence Stratigraphy
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Phase Change
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Fine-grained laminae rich in microcrystalline
dolomite
Coarse-grained laminae cemented by anhydrite
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Anhydrite dissolution
Quartz Overgrowth
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LATERAL HETEROGENEITY
P/P
1400 ft
930 ft
930 ft
B Sand in Teapot Dome
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35 mm
Cementation associated with gouge-filled fractures
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Open Fracture
Mineral-filled Fracture
Gouge-filled Fracture
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FOCUSES

• Reservoir heterogeneity.
• Fracture characterization and its impacts on EOR.
• Effects of pore network and minerals on EOR
  performance.