Difference between revisions of "Pore system fundamentals"
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− | [[Porosity]] consists of relatively large voids, or pores, distributed among smaller passages called pore throats. A pore system is an aggregate of pores and pore throats that shares a similar morphology. These elements play a role in determining reservoir and seal petrophysics (the characteristic way that oil, gas, and water move through rocks). | + | [[Porosity]] consists of relatively large voids, or pores, distributed among smaller passages called pore throats. A pore system is an aggregate of pores and pore throats that shares a similar morphology. These elements play a role in determining reservoir and seal petrophysics (the characteristic way that oil, gas, and water move through rocks). [[:file:predicting-reservoir-system-quality-and-performance_fig9-9.png|Figure 1]] shows typical 3-D pore system geometries found in intergranular, intercrystalline, vuggy, or fractured rocks. |
− | [[file:predicting-reservoir-system-quality-and-performance_fig9-9.png|thumb|{{figure number| | + | [[file:predicting-reservoir-system-quality-and-performance_fig9-9.png|thumb|{{figure number|1}}. Copyright: Coalson et al., 1994; courtesy RMAG.]] |
==Critical elements of pore-system geometry== | ==Critical elements of pore-system geometry== |
Revision as of 14:47, 18 February 2014
Exploring for Oil and Gas Traps | |
Series | Treatise in Petroleum Geology |
---|---|
Part | Predicting the occurrence of oil and gas traps |
Chapter | Predicting reservoir system quality and performance |
Author | Dan J. Hartmann, Edward A. Beaumont |
Link | Web page |
Store | AAPG Store |
Porosity consists of relatively large voids, or pores, distributed among smaller passages called pore throats. A pore system is an aggregate of pores and pore throats that shares a similar morphology. These elements play a role in determining reservoir and seal petrophysics (the characteristic way that oil, gas, and water move through rocks). Figure 1 shows typical 3-D pore system geometries found in intergranular, intercrystalline, vuggy, or fractured rocks.
Critical elements of pore-system geometry
The pores of a rock occur between grains or crystals, in fractures, or in vugs. A rock's storage capacity is controlled by the size and number of pores. A rock's permeability (flow capacity) is controlled by the size, shape, and number of the pore throats (connections) per pore. Four critical elements of the geometry of a rock's pore system are
- Pore system shapes
- Pore and pore throat sizes
- Pore connectivity
- Ratio of pore throats to pores
See also
- Classifying pore systems
- Pore system shapes
- Pore and pore throat sizes
- Connectivity and pore throat size
- Classifying pore systems
- Determining pore throat size from Pc curves