For a hydrocarbon reservoir, the following parameters are used in the general material balance equation (MBE).
The total pore volume (in rb) of the reservoir is:
For a hydrocarbon reservoir, the following parameters are used in the general material balance equation (MBE).
The total pore volume (in rb) of the reservoir is:
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- \( G B_{gi} \left( 1 + m \right) \frac{1}{1 - S_{oi}} \)
- \( N B_{oi} \left( 1 - m \right) \frac{1}{1 - S_{oi}} \)
- \( N B_{oi} \left( 1 + m \right) \frac{1}{1 - S_{wi}} \)
- \( G B_{gi} \left( 1 - m \right) \frac{1}{1 - S_{wi}} \)
The Correct Option is C
Solution and Explanation
The term \( m \) represents the ratio of the initial gas cap volume to the oil volume, and the total pore volume is influenced by both the oil and gas volumes. This relationship is captured by the formula: \[ {Total Pore Volume} = N B_{oi} \left( 1 + m \right) \frac{1}{1 - S_{wi}} \] This equation takes into account the volume of oil and gas, along with the water saturation, to give an accurate calculation of the total pore volume in the reservoir. It’s critical for understanding how the different phases in the reservoir will affect the total capacity and flow behavior. Thus, the correct answer is option (C), which correctly represents this relationship.
Top Questions on Reservoir and channel routing
For a hydrocarbon reservoir, the following parameters are used in the general material balance equation (MBE):
\[ \begin{aligned} N & = \text{Initial (original) oil in place, stb} \\ G & = \text{Initial volume of gas cap, scf} \\ m & = \text{Ratio of initial volume of gas cap to volume of oil initial in place, rb/rb} \\ S_{wi} & = \text{Initial water saturation} \\ S_{oi} & = \text{Initial oil saturation} \\ B_{oi} & = \text{Initial oil formation volume factor, rb/stb} \\ B_{gi} & = \text{Initial gas formation volume factor, rb/scf} \end{aligned} \]
The total pore volume (in rb) of the reservoir is:
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