Difference between revisions of "VRR"
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[[VRR]] is calculated with the current rates and on the cumulative basis '''VRRcum'''. | [[VRR]] is calculated with the current rates and on the cumulative basis '''VRRcum'''. | ||
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:<math> VRR = \frac{Injected\ reservoir\ volumes}{Produced\ reservoir\ volumes} = \frac{W_i B_{wi} + G_{gi} B_{ginj}}{N_p B_o + W_p B_{wp} + B_g(GOR-R_s)N_p}</math> | :<math> VRR = \frac{Injected\ reservoir\ volumes}{Produced\ reservoir\ volumes} = \frac{W_i B_{wi} + G_{gi} B_{ginj}}{N_p B_o + W_p B_{wp} + B_g(GOR-R_s)N_p}</math> | ||
Revision as of 17:34, 2 April 2022
Contents
Brief
VRR stands for voidage replacement ratio. It is the ratio of injected fluid to produced fluid at the reservoir conditions.
VRR is calculated with the current rates and on the cumulative basis VRRcum.
Equation
where
= Gas formation volume factor, m3/m3
= Injected gas formation volume factor at reservoir pressure, m3/m3
= Injected water formation volume factor, m3/m3
= Produced water formation volume factor, m3/m3
= Oil formation volume factor, m3/m3
= Produced gas oil ratio, m3/m3
= Injected gas volume, m3
= Oil produced, m3
= Solution gas oil ratio, m3/m3
= Voidage replacement ratio, fraction
= Water injected, m3
= Water produced, m3
