reservoir-engineering

name	reservoir-engineering
description	Use for reservoir engineering workflows, pyResToolbox calculations, pyrestoolbox-mcp tools, PVT, DCA, material balance, nodal analysis, relperm, brine, geomechanics, and simulation input generation.

Reservoir Engineering Skill

Use pyResToolbox or pyrestoolbox-mcp for engineering correlations whenever possible. Avoid hand-rolling PVT, VLP, material balance, relative permeability, or DCA formulas unless the exercise explicitly asks for implementation.

Common Tool Families

• Oil PVT: bubble point, solution GOR, oil FVF, density, compressibility, viscosity.
• Gas PVT: pseudocritical properties, Z-factor, Bg, density, viscosity, compressibility, pseudopressure.
• DCA: Arps exponential/harmonic/hyperbolic, Duong, EUR, forecast, uptime handling.
• Material balance: gas P/Z, oil Havlena-Odeh, aquifer support, drive indices.
• Nodal/IPR/VLP: inflow curves, outflow curves, operating point, VFP tables.
• Simtools: SWOF/SGOF/SGWFN, PVTO/PVDO/PVDG/PVTW, AQUTAB, Rachford-Rice flash.
• Layer: Lorenz coefficient and permeability distributions.
• Brine/CO2: brine properties and CO2-brine mutual solubility.

Parameter Pitfalls

• Oil tools use sg_g for gas gravity.
• Gas tools use sg for gas gravity.
• Inflow tools use psd, not pwf.
• Gas Z-factor uses method; many other gas property tools use zmethod.
• Oil bubble point methods include STAN, VALMC, and VELAR.
• Gas Z-factor methods include DAK, HY, WYW, and BUR.
• Relative permeability table types include SWOF, SGOF, and SGWFN.

Output Standard

Every answer should include:

• Inputs and units.
• Correlation or method used.
• Result table or scalar result.
• Engineering sanity check.
• Any applicability limits or assumptions.