U.S. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY
by Romeo M. Flores, Gary D. Stricker, Joseph
F. Meyer, Thomas E. Doll,
Digital products by Scott Kinney, Heather Mitchell,
and Steve Dunn
Open-File Report 01-126 2001
Image of Book Cover Page
Figure 1. Map showing the routes and stops for the field conference in
the Powder River Basin, Wyoming, and BLM Environmental Impact Statement
(BLM/EIS) project area boundary. Figure 2. Tertiary geological map of the Powder River Basin, Wyoming and
Montana showing the axis of the basin and BLM/EIS project area boundary. Figure 3. Generalized stratigraphic column of the Upper Cretaceous and
Tertiary rock units in the Powder River Basin, Wyoming.Modified
from Laudon and others (1976). Figure 4. Map showing subsurface mineral ownership in the Powder River
Basin, Wyoming and Montana. Figure 5.Map showing the locations
of permitted CBM wells in the Powder River Basin, Wyoming and Montana and
CBM fields in the southern part of Campbell County, Wyoming. Figure 6.Composite stratigraphic
column of the Fort Union Formation and associated rock units in the Powder
River Basin. Adapted from Flores
and others (1999). Figure 7.Map showing locations
of regional stratigraphic cross sections of the Paleocene Fort Union Formation
and associated CBM producing coal beds and zones in the Powder River Basin,
Wyoming and Montana. Adapted from
Flores and others (1999). Figure 8. North-south cross section (B-B’) of the Paleocene Fort Union
Formation and associated CBM producing coal beds and zones (e.g., Big George)
along the western part of the Powder River Basin, Wyoming and Montana. Adapted
from Flores and others (1999). Figure 9. North-south cross section (A-A’) of the Paleocene Fort Union
Formation and associated CBM producing coal beds and zones (e.g.,Wyodak-Anderson)
along the eastern part of the Powder River Basin, Wyoming. Adapted
from Flores and others (1999). Figure 10. East-west cross section (D-D
and’)
of the Paleocene Fort Union Formation and associated CBM producing coal
beds and zones (e.g., Wyodak-Anderson) along the south-central part of
the Powder River Basin, Wyoming. Adapted from Flores and others (1999). Figure 11.East-west cross section
(C-C’) of the Paleocene Fort Union Formation and associated CBM producing
coal beds and zones (e.g., Wyodak-Anderson) along the north-central part
of the Powder River Basin, Wyoming. Adapted from Flores and others (1999). Figure 12. Map showing the thickness of the overburden or rocks above
the Wyodak-Anderson coal zone in the Powder River Basin. Adapted
from Ellis and others (1999). Figure
13. Map showing the trend of historical CBM development from 1976
to 2000 along the eastern part of the Powder River Basin, Wyoming. Figure 14. Graph showing the trends of CBM production from January, 1990
to October, 2000 in the Powder River Basin, Wyoming. Total
gas production includes Federal, State, and Private leases (graph provided
by Fred Crockett). Figure 15.Graph showing the number
of CBM producing wells from January 1990 to October, 2000 in the Powder
River Basin, Wyoming (graph provided by Fred Crockett). Figure 16.Graph showing the depth
range of CBM producing wells from January 1990 to October, 2000 in the
Powder River Basin, Wyoming (graph provided by Fred Crockett). Figure 17. Graph showing the trends of co-produced water from January,
1990 to October, 2000 in the Powder River Basin, Wyoming.Total
co-produced water includes Federal, State, and Private leases (graph provided
by Fred Crockett). Figure 18. Maximum modeled drawdown of groundwater in the Wyodak-Anderson
coal zone from 1975-2015 in the eastern part of the Powder River Basin,
Wyoming.Modified from Bureau of
Land Management (1999). Figure 19. Map showing the watersheds, creeks, and rivers in the Powder
River Basin, Wyoming and Montana (map provided by Joe Meyer). Figure 20. Map showing SAR values in the Powder River Basin, Wyoming (data
from Rice and others, 2000). Figure 21. Map showing locations of 18 coal mines in the Gillette coalfield
along the eastern margin of the Powder River Basin. Figure 22. Map showing the mine permit boundary and strip pits of the
Jacobs Ranch Coal Company (map provided by Rob Livingston). Figure 23. A photograph of the mine highwall in Jacobs Ranch strip pit
1 showing the Wyodak-Anderson coal zone in the lower part and overlying
fluvial deposits (photograph provided by Rob Livingston). Figure 24. Map showing the locations of CBM wells and pipeline infrastructure
in the Dry Fork, Greater Black Thunder, and Little Thunder CBM fields southeast
of Wright, Wyoming (map provided by Tom Doll). Figure 25.Map showing locations
of CBM, oil, gas, and coal wells between Wright and Jacobs Ranch-Black
Thunder coal mines.Cross section
(A-B’) is shown in Figure 26 (map provided
by Al Ochs). Figure 26.East-west cross section
(A-B) showing the vertical and lateral stratigraphic variations of the
CBM-producing Wyodak-Anderson coal zone and related fluvial deposits of
the Fort Union Formation from Jacobs Ranch coal mine to south of Wright
(cross section provided by Al Ochs). Figure 27.Map showing the net coal
thickness isopach of the Wyodak-Anderson coal zone in the Powder River
Basin, Wyoming and Montana. Adapted from Ellis and others (1999). Figure 28. Map showing the net coal thickness isopach of coal beds deeper
than the Wyodak-Anderson coal zone in the Powder River Basin, Wyoming and
Montana (map provided by Margaret Ellis). Figure 29. Map showing the thickness of the overburden or rocks above
the coal beds deeper than the Wyodak-Anderson coal zone in the Powder River
Basin (map provided by Margaret Ellis). Figure 30.A photograph of a truck
mounted rig used by gas developers for shallow drilling of the Fort Union
coal beds in the Powder River Basin. Figure 31.Map showing the network
of pipelines and locations of producing wells in the Gap gas gathering
complex of Bear Paw Energy (map provided by Pierce Norton). Figure 32. Map showing the major (16, 20, and 24 inches in diameter) pipeline
infrastructure in the Powder River Basin, Wyoming and Montana (map provided
by Pierce Norton). LIST OF TABLES
Table
1. Chemical composition of co-produced water in the Powder River
Basin, Wyoming.Data from Rice and
others (2000).
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