The plot of. of WOR (along y-axis) against the inverse oil production rate (along x-axis) (see Fig. 1).
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| Fig. 1. WOR (logarithmic vertical axis) vs inverse oil production rate (linear horizontal axis) |
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<WOR>\langle WOR \rangle =\frac{<q_W>}{<q_O>\langle q_W \rangle}{\langle q_O \rangle} = a + b \<cdot \langle q_O^{-1} \>rangle |
where
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| body | <q_W>, \ <q_O>\langle q_W \rangle, \ \langle q_O \rangle |
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| are weighted average of and |
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| <\langle A >\rangle_t \ = \frac{1}{t} \int_o^t A(t) \, dt |
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| <A>\langle A\rangle_q \ = \frac{1}{Q(t)} \int_o^t A(t) \, q(t) \, dt |
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