SCAL Endpoint Analysis
Spreadsheet
29 rows x 5 columns
| A | B | C | D | E | |
|---|---|---|---|---|---|
| 1 | SCAL Endpoint Analysis | ||||
| 2 | Corey Exponents | ||||
| 3 | Oil Exponent (No) | 3 | |||
| 4 | Water Exponent (Nw) | 2.5 | |||
| 5 | |||||
| 6 | Core Plug Endpoints | Plug 1 | Plug 2 | Plug 3 | Average |
| 7 | Swi (fraction) | 0.2 | 0.18 | 0.22 | 0.2 |
| 8 | Sorw (fraction) | 0.25 | 0.22 | 0.28 | 0.25 |
| 9 | Krow @ Swi | 1 | 0.95 | 1 | 0.9833333333 |
| 10 | Krw @ Sorw | 0.3 | 0.35 | 0.28 | 0.31 |
| 11 | |||||
| 12 | Corey Model Curves | ||||
| 13 | Sw | Krow | Krw | Krow+Krw | |
| 14 | 0.2 | 0.9833333333 | 5.60829134E-42 | 0.9833333333 | |
| 15 | 0.25 | 0.7387928876 | 0.0007724670811 | 0.7395653546 | |
| 16 | 0.3 | 0.538580015 | 0.004369733691 | 0.5429497487 | |
| 17 | 0.35 | 0.3782619584 | 0.01204157009 | 0.3903035285 | |
| 18 | 0.4 | 0.2534059604 | 0.0247189466 | 0.278124907 | |
| 19 | 0.45 | 0.1595792637 | 0.0431822226 | 0.2027614863 | |
| 20 | 0.5 | 0.09234911094 | 0.06811740691 | 0.1604665179 | |
| 21 | 0.55 | 0.0472827448 | 0.1001440338 | 0.1474267786 | |
| 22 | 0.6 | 0.01994740796 | 0.1398314781 | 0.1597788861 | |
| 23 | 0.65 | 0.0059103431 | 0.1877095007 | 0.1936198438 | |
| 24 | 0.7 | 0.0007387928876 | 0.2442755394 | 0.2450143323 | |
| 25 | 0.75 | 0 | 0.31 | 0.31 | |
| 26 | |||||
| 27 | Summary | ||||
| 28 | Crossover Sw | 0.55 | fraction | ||
| 29 | Mobile Sw range | 0.2 | to | 0.75 |
Description
Tabulate SCAL endpoint data from multiple core plugs (Swi, Sorw, Krow@Swi, Krw@Sorw), apply user-defined Corey exponents, and generate model relative permeability curves. This is the "lab data to simulation input" workflow — taking raw core measurements and producing smooth kr curves for reservoir simulation.
Quality check: Compare model curves against plug endpoints to verify that Corey exponents honor the measured data. Adjust No and Nw until the model matches lab observations.
Workflow
- Inputs: Core plug endpoints (3 plugs) and Corey exponents
- Step 1: Average endpoint values across plugs
- Step 2: Generate Corey kr curves using averaged endpoints
- Step 3: Verify model honors plug data at endpoints
- Output: Corey kr model curves ready for simulation input
How to use this blueprint
- In Excel, go to the Petroleum Office ribbon tab and click Blueprint Manager
- Search for SCAL Endpoint Analysis
- 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.