Rock Compressibility Estimation
Spreadsheet
23 rows x 4 columns
| A | B | C | D | |
|---|---|---|---|---|
| 1 | Rock Compressibility - Newman Correlations | |||
| 2 | Porosity Sensitivity | |||
| 3 | Porosity (fraction) | Cf Sandstone (1/psi) | Cf Limestone (1/psi) | Ratio |
| 4 | 0.05 | 1.448693252E-05 | 1.568088698E-05 | 0.9238592523 |
| 5 | 0.08 | 8.589149479E-06 | 1.012884419E-05 | 0.8479891015 |
| 6 | 0.1 | 6.585923989E-06 | 8.230823786E-06 | 0.8001536857 |
| 7 | 0.12 | 5.265011014E-06 | 6.947245248E-06 | 0.7578559308 |
| 8 | 0.15 | 3.974413024E-06 | 5.645415459E-06 | 0.7040071812 |
| 9 | 0.18 | 3.14251869E-06 | 4.765024565E-06 | 0.6594968498 |
| 10 | 0.2 | 2.738710195E-06 | 4.320312563E-06 | 0.633914828 |
| 11 | 0.22 | 2.415813077E-06 | 3.953884921E-06 | 0.6109973167 |
| 12 | 0.25 | 2.038819444E-06 | 3.510737329E-06 | 0.5807382477 |
| 13 | 0.28 | 1.751957879E-06 | 3.159587436E-06 | 0.5544894436 |
| 14 | 0.3 | 1.596646145E-06 | 2.963244591E-06 | 0.5388168596 |
| 15 | ||||
| 16 | Pore Volume Change Calculation | |||
| 17 | Initial Reservoir Pressure | 4500 | psia | |
| 18 | Current Pressure | 3000 | psia | |
| 19 | Pressure Change | 1500 | psi | |
| 20 | Porosity | 0.2 | fraction | |
| 21 | Rock Compressibility (Sand) | 2.738710195E-06 | 1/psi | |
| 22 | Pore Volume Change | 0.004108065293 | fraction (dV/V) | |
| 23 | PV Change per 1000 psi | 0.2738710195 | % |
Description
Estimate rock (formation) compressibility using Newman's correlations. Rock compressibility is critical for material balance calculations and pressure transient analysis.
Newman Correlations:
- Sandstone: Higher compressibility at low porosity
- Limestone: Generally lower compressibility than sandstone
How to use this blueprint
- In Excel, go to the Petroleum Office ribbon tab and click Blueprint Manager
- Search for Rock Compressibility Estimation
- Click on the blueprint to preview the spreadsheet template
- Click Insert to place it into your worksheet. Modify the input values to match your data.