Ratio of field-wide oil production rate
to field-wide water injection rate :| LaTeX Math Block |
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{\rm PIR} = \frac{q^{\uparrow}_O}{q^{\downarrow}_{WI}} |
It measures how efficiently waterflood supports the oil production and represent one of the key Waterflood Diagnostics.
The PIR can be related to the current IVRR as:
| LaTeX Math Block |
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{\rm PIR}= \frac{1}{\rm IVRR} \cdot \frac{1-Y_w}{Y_w + (1-Y_w) \, \left[ \frac{B_o}{B_w} + \frac{B_g}{B_w} \, ( {\rm GOR} - R_s) \right] } |
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| LaTeX Math Block Reference |
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| anchor | VRR_PIR |
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| page | Instantaneous Voidage Replacement Ratio = IVRR |
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See Also
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Petroleum Industry / Upstream / Production / Subsurface Production / Field Study & Modelling / Production Analysis / Waterflood Diagnostics
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