Page tree

@wikipedia


Volumetric value of Gas Initial In Place (GIIP) recalculated to NTP conditions:

(1) V_{\rm STGIIP} = \int_{\Omega} \left[ \frac{s_{gi}({\bf r}) }{B_g} + \frac{R_s \, s_{oi}({\bf r})}{B_o} \right] \phi_e({\bf r}) dV

where

\Omega

Petroleum reservoir

{\bf r} = (x,y,z)

Position vector to some location in a reservoir

dV = dx \, dy \, dz

Volume element of a reservoir

p_i({\bf r}), \, T_i({\bf r})

Initial formation pressure and temperature at location {\bf r}

\phi_e({\bf r})

Effective porosity at location {\bf r}

s_{oi}({\bf r}), \, s_{gi}({\bf r})

Initital Oil saturation and Gas saturation at location {\bf r}

B_o(p_i, T_i), \, B_g(p_i, T_i)

Oil FVF and Gas FVF at Initial formation pressure and temperature

R_s(p_i, T_i), \, R_v(p_i, T_i)

Solution GOR and Vaporized Oil Ratio at Initial formation pressure and temperature


For practical implementation of  (1) one needs to build a Geological Model (GM) and perform a numerical integration.

See Also


Petroleum Industry / Upstream / Exploration / Booking Reserves / Gas Initial In Place (GIIP) / Stock-Tank Gas Initial In-Place (STGIIP)


  • No labels