Nomenclature
General Convention
This user manual uses the nomenclature intoduced by Whitson and Brulé in the SPE Phase Behavior Monograph.
| Phase | Rate at \((p, T)\) conditions | Rate at standard conditions |
|---|---|---|
| oil | \(q_\mathrm{o}\) | \(q_\mathrm{\bar{o}}\) |
| gas | \(q_\mathrm{g}\) | \(q_\mathrm{\bar{g}}\) |
| water | \(q_\mathrm{w}\) | \(q_\mathrm{\bar{w}}\) |
List of Symbols
| Symbol | Meaning | Unit |
|---|---|---|
| \(B_o\) | Oil Formation Volume Factor | res. vol. / surface vol. |
| \(B_{gd}\) | Dry Gas Formation Volume Factor | res. vol. / surface vol. |
| \(B_{gw}\) | Wet Gas Formation Volume Factor | res. vol. / surface vol. |
| \(b_{gd}\) | Dry Gas Expansion Factor | surface vol. / res. vol. |
| \(\mathcal{C}\) | List of components in an EOS model | - |
| \(F_V\) | Vapor mole fraction | - |
| \(FF\) | Flash Factor | scf/STB or Sm³/Sm³ |
| G | Original Gas in Place | scf or Sm³ |
| \(K_i\) | K-value of component \(i\) defined by \(K_i = \frac{y_i}{x_i}\) where \(y_i\) and \(x_i\) are equilibrium phases | - |
| N | Original Gas in Place | scf or Sm³ |
| \(p_{a}\) | Abandonment Pressure | psi or bar |
| \(p_\mathrm{res}\) | Reservoir pressure | psi or bar |
| \(p_\mathrm{res, init}\) | Initial reservoir pressure | psi or bar |
| \(R_p\) | Producing Gas Oil Ratio | scf/stb or sm³/sm³ |
| \(R_s\) | Solution Gas Oil Ratio | scf/stb or sm³/sm³ |
| \(r_s\) / \(R_v\) | Solution Condensate (Oil) Gas Ratio | stb/MMscf or sm³/sm³ |
| \(S_\mathrm{o}\) | Saturation of oil | % |
| \(S_\mathrm{g}\) | Saturation of oil | % |
| \(SF\) | Shrinkage Factor of Separator Oil | STB/sep.bbl or Sm³/sep.m3 |
| \(T_\mathrm{res}\) | Reservoir Temperature | F or C |
| \(\underline{P}\) | Process model | - |
| \(W\) | Weight factor | - |
| \(x_i\) | Liquid mole fraction of component \(i\) | mol-% |
| \(y_i\) | Vapor mole fraction of component \(i\) | mol-% |
| \(z_{\mathrm{bo}i}\) | Initial in-situ reservoir mixture used in the process of generating BO table | mol-% |
| \(z_i\) | Molar fraction of component \(i\) | mol-% |
| \(\alpha\) | Shape Factor of Gamma Model | - |
| \(\gamma_\mathrm{api}\) | Stock tank oil API gravity | degrees API |
| \(\eta\) | Bound of Gamma Model | g/mol |
| \(\mu_o\) | Oil viscosity | cp |
| \(\mu_g\) | Gas viscosity | cp |
| \(\rho_\mathrm{o}\) | Oil density | lbm/ft³ or kg/m³ |
| \(\rho_\mathrm{g}\) | Gas density | lbm/ft³ or kg/m³ |
List of Acronyms
| Acronym | Meaning |
|---|---|
| BO | Black Oil |
| BOT | Black Oil Table |
| CCE | Constant Composition Expansion |
| EOS | Equation of State |
| EOR | Enhanced Oil Recovery |
| FC | First-Contact |
| FCM | First-Contact Miscibility |
| GOR | Gas Oil Ratio [sm³/sm³ or scf/bbl] |
| GC | Gas Condensate |
| GC | Gas Chromatography |
| HnP | Huff-n-Puff |
| MCM | Multi-Contact Miscibility |
| MC | Multi-Contact |
| MME | Minimum Miscibility Enrichment |
| MMP | Minimum Miscibility Pressure |
| MW | Molecular Weight |
| NC | Near-Critical |
| SCN | Single Carbon Number |
| VO | Volatile Oil |