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| ==Reservoir performance== | | ==Reservoir performance== |
| | | |
− | The fundamental goal of the explorationist is to predict the performance that a reservoir will have over the production life of the field. Reservoir performance affects the economic viability of a play or prospect and is a function of reservoir system quality. Performance is expressed by | + | The fundamental goal of the explorationist is to predict the performance that a [[reservoir]] will have over the production life of the field. Reservoir performance affects the economic viability of a play or prospect and is a function of reservoir system quality. Performance is expressed by |
| | | |
| * Initial production rate and production rate decline over time | | * Initial production rate and production rate decline over time |
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| * Pore throat size distribution and pore geometry (including natural fractures; see also [[Pore and pore throat sizes]]) | | * Pore throat size distribution and pore geometry (including natural fractures; see also [[Pore and pore throat sizes]]) |
| * Pore volume | | * Pore volume |
− | * Permeabilities to hydrocarbon | + | * [[Permeability]] to hydrocarbon |
| * [[Water saturation]] (hydrocarbon pore volume) | | * [[Water saturation]] (hydrocarbon pore volume) |
| * Lateral continuity, number, and position of flow units and containers | | * Lateral continuity, number, and position of flow units and containers |
− | * Reservoir pressure and drive mechanism | + | * Reservoir pressure and [[Reservoir drive mechanisms|drive mechanism]] |
| | | |
| ==Procedure for reservoir system analysis== | | ==Procedure for reservoir system analysis== |
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| |- | | |- |
| | 3 | | | 3 |
− | | Determine pore type for each flow unit in the key well using [[core description]]s, thin section and SEM analysis, [[porosity]]/[[permeability]]–r<sub>35</sub> analysis, S<sub>w</sub> –depth plot, [[Buckles plot]], etc. | + | | Determine pore type for each flow unit in the key well using [[core description]]s, [[Thin section analysis|thin section]] and [[Scanning electron microscopy (SEM)|scanning electron microscopy]] analysis, [[porosity]]/[[permeability]]–[[Characterizing_rock_quality#What_is_r35.3F|r<sub>35</sub>]] analysis, [[Water saturation]] –depth plot, [[Buckles plot]], etc. |
| |- | | |- |
| | 4 | | | 4 |
− | | Construct stratigraphic strike and dip [[cross section]]s that include the key well. Use a region/fieldwide time marker at the top of the reservoir as the datum. | + | | Construct stratigraphic [[strike]] and [[dip]] [[cross section]]s that include the key well. Use a region/fieldwide time marker at the top of the reservoir as the datum. |
| |- | | |- |
| | 5 | | | 5 |
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| |- | | |- |
| | 6 | | | 6 |
− | | Correlate flow units between wells and subdivide the reservoir into containers by determining which flow units interact during drainage. | + | | Correlate [[Flow units for reservoir characterization|flow units]] between wells and subdivide the reservoir into containers by determining which flow units interact during drainage. |
| |- | | |- |
| | 7 | | | 7 |