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Bakken and Three Forks Formations, Williston Basin, North Dakota and Montana (USGS) (view source)
Revision as of 22:18, 15 April 2021
, 22:18, 15 April 2021no edit summary
==Geology==
==Geology==
{| class = "wikitable"
|-
| Lithology || Shale, silt, dolostone, limestone, sandstone
|-
| Depth (ft) || 6500–10,500
|-
| Thickness (ft) || 0–140 (including Middle Bakken and Upper and Lower Bakken shales)
|-
| Porosity (%) || Variable, Sandstones: 5–9%; Dolomite: up to 15%
|-
| Permeability (md) || Variable, Sandstones: 0.1; Dolomite: 0.01
|-
| Water Saturation (%) || 30–100
|-
| Reservoir Pressure (psi) || Variable, 0.5 to 0.78 psi/ft across basin
|-
| TOC (wt%) || Avg 11% for Upper and Lower Bakken shales
|-
| Measured VR (%''Ro'') || ''(Suppressed)''
|-
| Tmax (°C) || 425–450
|-
| Hydrogen Index (mg HC/g) || <100 to >650
|-
| S2 (mg HC/g) ||
|-
| Kerogen Type || Type II
|-
| XRD Quartz (wt%) || Variable
|-
| XRD Carbonate (wt%) || Variable
|-
| XRD Clay (wt%) || Variable
|-
| Static Young's Modulus (10<sup>6</sup> psi) ||
|-
| Static Poisson's Ratio ||
|}
==Stratigraphic Column==
==Stratigraphic Column==
[[file:StratColumnBakken2019-20CommRpt.jpg]]
Garcia-Fresca et al.<ref name=Garciaetal>Garcia-Fresca, B., D. Pinkston, R. G. Loucks, and R. LeFever, The Three Forks playa lake depositional model: Implications for characterization and development of an unconventional carbonate play: AAPG Bulletin, v. 102, no. 8, p. 1455-1488.</ref>
==Map==
==Map==