Difference between revisions of "Pressure trap regime"
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'''System:''' Fluidic traps | '''System:''' Fluidic traps | ||
| − | + | :'''Regime:''' Pressure traps | |
| − | + | ::'''Class:''' Overpressure traps | |
| − | + | ::Limits controlled by change from overpressured reservoir to normally pressured reservoir. Common in some fractured reservoirs in which overpressures were required to generate and support open fractures in the subsurface. | |
| − | + | :::'''Family:''' High-pressure traps | |
| − | + | ::::'''Variety:''' Hydrocarbon generation | |
| − | + | ::::Overpressure due to volume increase in conversion of kerogen to oil. | |
| − | + | ::'''Class:''' Tilted oil–water contacts | |
| − | + | ::Boundary defined by tilted oil–water or gas–water contact. | |
| − | + | :::'''Family:''' Hydrodynamic traps | |
| − | + | :::Tilted hydrocarbon–water contact in accumulation due to hydrodynamic gradient. | |
| − | |||
| − | |||
==See also== | ==See also== | ||
Revision as of 17:17, 6 February 2014
| Exploring for Oil and Gas Traps | |
| |
| Series | Treatise in Petroleum Geology |
|---|---|
| Part | Traps, trap types, and the petroleum system |
| Chapter | Classification of exploration traps |
| Author | Richard R. Vincelette, Edward A. Beaumont, Norman H. Foster |
| Link | Web page |
| Store | AAPG Store |
Pressure traps are those in which changes in fluid pressures control or modify trapping elements. Changes from normal pressure gradients to overpressures can create or destroy pressure seals and create isolated pressure compartments that may define trap boundaries. In addition, the presence of a hydrodynamic gradient can cause tilted oil–water and gas–water contacts, which define trap boundaries.
Classes and families
The outline below presents the hierarchy and definitions for pressure traps.
System: Fluidic traps
- Regime: Pressure traps
- Class: Overpressure traps
- Limits controlled by change from overpressured reservoir to normally pressured reservoir. Common in some fractured reservoirs in which overpressures were required to generate and support open fractures in the subsurface.
- Family: High-pressure traps
- Variety: Hydrocarbon generation
- Overpressure due to volume increase in conversion of kerogen to oil.
- Family: High-pressure traps
- Class: Tilted oil–water contacts
- Boundary defined by tilted oil–water or gas–water contact.
- Family: Hydrodynamic traps
- Tilted hydrocarbon–water contact in accumulation due to hydrodynamic gradient.
See also
External links
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