Difference between revisions of "Subregional and local pressure compartments"
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Latest revision as of 17:58, 17 February 2022
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It has been suggested that this article be merged with [[::Pressure compartments|Pressure compartments]]. (Discuss) |
| Exploring for Oil and Gas Traps | |
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| Series | Treatise in Petroleum Geology |
|---|---|
| Part | Critical elements of the petroleum system |
| Chapter | Formation fluid pressure and its application |
| Author | Edward A. Beaumont, Forrest Fiedler |
| Link | Web page |
| Store | AAPG Store |
Subregional or local (second- and third-order) pressure compartments can be found within normal pressure regimes or regional pressure compartments.
Subregional pressure compartments
Figure 1 Example of a subregional compartment contained within the regional pressure compartment of the Anadarko basin. From Al-Shaieb et al.;[1] courtesy AAPG.
Figure 2 Pressure–depth plot of a well through the Anadarko regional pressure compartment. Modified from Al-Shaieb et al.;[2] courtesy AAPG.
Figure 1 is an example of a subregional compartment contained within the regional pressure compartment of the Anadarko basin of Figure 2.
Local pressure compartments
The fluids in a porous bioherm completely encased in shale (as shown in Figure 3) are virtually isolated from the nearby fluid systems outside the bioherm. The bioherm, then, is a pressure compartment that may or may not be abnormally pressured. Other geological features that may form local pressure compartments are fault blocks, sand lenses, and sand wedges developed in growth faults.
See also
- Pressure compartments
- Regional pressure compartments
- Pressure compartment seals
- Applying pressure compartment concepts to exploration
References
- ↑ Al-Shaieb, Z., J. O. Puckette, A. A. Abdalla, and P. B. Ely, 1995b, Three levels of compartmentation within the overpressured interval of the Anadarko basin, in P. J. Ortoleva, ed., Basin Compartments and Seals: AAPG Memoir 61, p. 69–83.
- ↑ Al-Shaieb, Z., J. O. Puckette, A. A. Abdalla, and P. B. Ely, 1995a, Megacompartment complex in the Anadarko basin, in P. J. Ortoleva, ed., Basin Compartments and Seals: AAPG Memoir 61, p. 55–68.
External links
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