Nomenclature
For another resorce for nomeclature and short definitions, check out our wiki here.
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 |