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Anadarko Basin and Environs
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Figure 1. Pressures in Morrow-Springer
clastics, Oklahoma and much of the Texas Panhandle, on base map
of Morrow-Springer thickness. A-A’ is cross-section in
Figure Figure 2. |
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Figure 2. Southwest-northeast
cross-section, Anadarko basin, showing interval characterized by
overpressures. |
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Figure 3. Pressure regimes of Anadarko
basin, on base map of base Morrow structure. |
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Figure 4. Structural cross-section of
Cement anticline, Caddo and Grady counties, Oklahoma, showing
interval of overpressures, which seemingly are
elevation-dependent.
Location of anticline shown in Figures 3
and 7. |
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Figure 5. Fluid compartments in
pre-Meramec formations, Anadarko basin and environs. Meramec is
Mississippian in age. |
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Figure 6. Areal extent in western
Oklahoma, Texas Panhandle, and western Kansas of potentiometric
surface of +1400 feet in pre-Meramec formations, encompassing
area where potentiometric surface in pre-Meramec is +10,500
feet. |
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Figure 7. Detailed distribution map of
area with potentiometric surface in pre-Meramec of +10,500 feet.
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Figure 8. Detailed distribution map of
compartments in the area within 60 miles of Oklahoma City. |
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Figure 9. Southwest-northeast
cross-section to Oklahoma City field, showing compartments in
Pennsylvanian to Cambrian strata. |
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Figure 10. Seminole sag, where nearly
one billion barrels of oil have been produced from underpressured
reservoirs. Location shown in Figure
5. |
Permian Basin and Environs
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Figure 11. Permian salt basin, from West
Texas – New Mexico to western Kansas – eastern Colorado. |
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Figure 12. West-east cross-section (New
Mexico – Texas – Oklahoma) of Permian evaporates and associated
pressure regimes. |
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Figure 13. Palo Duro basin and related
sedimentary provinces, showing boundary between fluid
compartments. |
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Figure 14. Mississippian-Wolfcamp
underpressured area, Permian basin, West Texas. Potentiometric
surface is 1700 feet. |
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Figure 15. West-east cross-section, J M
field, Crockett and Val Verde counties, Texas, showing the
difference in elevation of the potentiometric surface (+2500
feet) across a major fault and
position of potentiometric surface of +1700 feet (above Woodford
Shale). Location of field in
Figure 14. |
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Figure 16. Diagrammatic cross-section of
Midland basin and Eastern Shelf, through Howard Glasscock field,
showing underpressured compartments. |
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Figure 17. Distribution map of normal
pressures and underpressures, southeastern New Mexico, and
location of Bough “C” fluid compartment (within the compartment
of underpressures (left). Pressure-depth plot of numerous data
taken within the underpressured compartment and the plot for the
Bough “C” compartment (right). |
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Figure 18. Detailed map of pressure
regimes, southeastern New Mexico, including the Bough “C”
compartment within the underpressured compartment. |
Illinois and Michigan Basins
References
Orr, E.D., Kreitler, C.W., and Senger, R.K., 1985,
Investigation of Underpressuring in the Deep-Basin Brine Aquifer
Palo Duro Basin, Texas: Bureau of Economic Geology, Austin, Texas,
43 p.
Walton, W.C., 1960, Leaky Artesian Aquifer Conditions
in Illinois: Illinois State Water Survey Report of Investigation 39.
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