| Coal-Bed Methane TPS 503901 |
1. Denver Formation Coals AU 50390181—Hypothetical continuous
coal-bed gas from the Upper Cretaceous and Paleocene Denver Formation
in the central Denver Basin Province.
2. Laramie Formation Coals AU 50390182—Hypothetical continuous coal-bed gas
from the Upper Cretaceous Laramie Formation in the central Denver Basin Province.
|
|
| Upper Cretaceous Fractured Niobrara TPS 503902 |
1. Fractured Niobrara Limestone Transitional AU 50390201—Conventional;
located in the central Denver Basin Province and excludes areas
of AUs 50390261 and 50390761.
2. Fractured Niobrara Limestone (Silo field area) AU 50390261—Continuous;
mostly oil production from the Upper Cretaceous Niobrara Formation in the
Silo field area (fig. 1).
|
|
| Upper Cretaceous Pierre Shale (Florence Field) TPS 503903 |
1. Fractured Pierre Shale AU 50390361—Continuous; oil production
from the Upper Cretaceous Pierre Shale in the Florence field area
(fig. 1).
|
|
| Lower Cretaceous TPS 503904 |
1. Dakota Group and D Sandstone AU 50390401—Conventional; Cretaceous
Muddy (J) Sandstone reservoirs located across the central third
of the province.
2. Subthrust Structural AU 50390402—This hypothetical conventional assessment
unit of Cretaceous and Paleozoic formations is located under and along the
eastern edge of the
Rocky Mountains.
|
|
| Permian-Pennsylvanian TPS 503905 |
1. Permian-Pennsylvanian Reservoirs AU 50390501—Conventional;
structural traps in limestones and sandstones concentrated in the
northwestern half of the province.
|
|
| Cretaceous Composite TPS 503906 |
1. Pierre Shale Sandstones AU 50390601—Conventional reservoirs
in the Upper Cretaceous Richard, Terry (Sussex), and Hygiene (Shannon)
Sandstones, Spindle field area (fig. 1).
2. Niobrara-Codell (Wattenberg area) AU 50390661—Continuous; oil and gas
production from Upper Cretaceous sandstone and limestone, Spindle field area
(fig. 1).
3. Dakota Group Basin-Centered Gas AU 50390662—Continuous gas accumulation
in the Wattenberg gas field (fig. 1). Production is primarily from the Lower
Cretaceous Muddy (J)
Sandstone.
|
|
| Upper Cretaceous Niobrara Biogenic Gas TPS 503907 |
1. Niobrara Chalk AU 50390761—Continuous; biogenic gas from the
Niobrara Formation is located in the eastern third of the province
and extends eastward into Kansas and northward
into South Dakota.
|
|
|
Table 1. Denver Basin Province assessment results listed by name and code of total petroleum system and assessment unit.
| [TPS, total petroleum system; AU, assessment unit; MMBO, million barrels or oil; BCFG, billion cubic feet of gas; MMBNGL, million barrels of natural gas liquids. Type refers mainly to oil or gas
accumulations in the assessment unit. Fractiles are fully risked estimates. F95 denotes a 95-percent chance of at least the amount tabulated. Other fractiles are defined similarly. Fractiles are additive only under
the assumption of perfect positive correlation. CBG, coal-bed gas. N/A, not quantitatively assessed or not applicable] |
Total undiscovered resources
Conventional Oil and Gas Resources
| Name & Code of TPS and AU |
Type |
Oil (MMBO)
|
Gas (BCFG)
|
NGL (MMBNGL)
|
Upper Cretaceous Fractured
Niobrara TPS 503902 |
|
|
0.00 |
0.00 |
2.08 |
0.58 |
0.00 |
0.00 |
0.00 |
0.00 |
|
0.00 |
0.00 |
0.21 |
0.06 |
0.00 |
0.00 |
0.00 |
0.00 |
|
Lower Cretaceous
TPS
503904 |
|
12.37 |
33.51 |
68.79 |
36.27 |
|
N / A
|
N / A
|
N / A
|
N / A
|
|
4.52 |
13.05 |
29.16 |
14.48 |
9.66 |
28.13 |
61.64 |
30.95 |
|
0.33 |
1.02 |
2.46 |
14.48 |
0.58 |
1.81 |
4.29 |
2.04 |
|
|
0.00 |
0.00 |
57.42 |
14.37 |
|
N / A
|
N / A
|
N / A
|
N / A
|
|
0.00 |
0.00 |
29.15 |
7.19 |
0.00 |
0.00 |
9.58 |
33.62 |
|
0.00 |
0.00 |
2.98 |
0.72 |
0.00 |
0.00 |
9.58 |
2.22 |
|
Permian-Pennsylvanian
TPS 503905 |
|
2.11 |
9.43 |
23.70 |
10.74 |
|
N / A
|
N / A
|
N / A
|
N / A
|
|
1.03 |
4.65 |
12.55 |
5.45 |
0.00 |
0.00 |
0.00 |
0.00 |
|
0.06 |
0.27 |
0.79 |
0.33 |
0.00 |
0.00 |
0.00 |
0.00 |
|
Cretaceous Composite
TPS
503906 |
|
0.53 |
1.75 |
3.67 |
1.86 |
|
N / A
|
N / A
|
N / A
|
N / A
|
|
1.39 |
6.83 |
15.57 |
7.45 |
3.20 |
10.86 |
19.85 |
10.69 |
|
0.11 |
0.67 |
1.63 |
0.75 |
0.13 |
0.60 |
1.26 |
0.64 |
|
Total
Conventional
Resources |
|
15.02 |
44.69 |
157..57 |
64.40 |
|
19.81 |
62.73 |
312.66 |
110.41 |
|
|
|
Continuous Oil and Gas Resources
| Name & Code of TPS and AU |
Type |
Oil (MMBO)
|
Gas (BCFG)
|
NGL (MMBNGL)
|
Cretaceous
Composite
TPS 503906 |
|
|
157.71 |
298.43 |
564.71 |
321.73 |
|
|
|
|
793.09 |
1,076.03 |
1,459.92 |
1,094.70 |
|
|
Upper Cretaceous Niobrara
Biogenic Gas TPS 503907 |
|
|
|
337.63 |
843.01 |
2,104.85 |
984.08 |
|
|
Upper
Cretaceous Fractured
Niobrara TPS 503902 |
|
|
|
|
|
Upper Cretaceous Pierre
Shale
(Florence field) TPS 503903 |
|
|
| Not quantitatively assessed |
|
Coal-Bed Methane
TPS
503903 |
|
|
| Not quantitatively assessed |
|
|
|
| Not quantitatively assessed |
|
Total
Continuous
Resources |
|
|
1,292.52 |
2,224.81 |
4,142.64 |
2,408.33 |
|
|
|
Total
Undiscovered
Oil and Gas Resources |
|
35.75 |
82.04 |
224.92 |
104.23 |
|
1,312.33 |
2,287.53 |
4,455.30 |
2,518.74 |
|
|
|
|
|
