havlena_odeh
Performs oil material balance analysis with the Havlena-Odeh method to identify reservoir drive mechanisms and estimate Original Oil In Place (OOIP) from production and PVT data.
Instructions
Oil material balance using Havlena-Odeh straight-line method (1963).
Identifies drive mechanism (depletion, gas cap, water drive) and estimates Original Oil In Place (OOIP). Returns F vs Et plot data for diagnostics.
Args: pressures: Reservoir pressures at each time step (psi). np_values: Cumulative oil production at each step (STB). rp_values: Cumulative producing GOR at each step (scf/STB). wp_values: Cumulative water production at each step (STB). wi_values: Cumulative water injection at each step (STB). bo_values: Oil FVF at each pressure (bbl/STB). rs_values: Solution GOR at each pressure (scf/STB). bg_values: Gas FVF at each pressure (bbl/scf). bw_values: Water FVF at each pressure (bbl/STB). boi: Initial oil FVF (bbl/STB). rsi: Initial solution GOR (scf/STB). bgi: Initial gas FVF (bbl/scf). cf: Formation compressibility (1/psi). Optional. swi: Initial water saturation (fraction, 0-1). Optional.
Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| pressures | Yes | ||
| np_values | Yes | ||
| rp_values | Yes | ||
| wp_values | Yes | ||
| wi_values | Yes | ||
| bo_values | Yes | ||
| rs_values | Yes | ||
| bg_values | Yes | ||
| bw_values | Yes | ||
| boi | Yes | ||
| rsi | Yes | ||
| bgi | Yes | ||
| cf | No | ||
| swi | No |
Output Schema
| Name | Required | Description | Default |
|---|---|---|---|
| result | Yes |