| Metric name | Diagnostic plots | Objectives |
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|---|
| 1 | Production History Map | qo, qg , qw, qinj, VRR, Pe over STOIIP & Structure | Production Distribution Overview | | LaTeX Math Block |
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| {\rm CumVRR} = \frac{B_w \, Q_{WI}}{B_w \, Q_W + B_o \, Q_O + B_g Q_G - B_g R_s Q_O} |
| LaTeX Math Block |
|---|
| {\rm CurVRR} = \frac{B_w \, q_{WI}}{B_w \, q_W + B_o \, q_O + B_g (q_G - R_s Q_O)} |
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| 2 | Recovery Map | Qo, Qg , Qw, Qinj , VRR, Pe over RF & Structure | Recovery Distribution Overview | | LaTeX Math Block |
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{\rm RF} = \frac{Q_o}{V_{STOIIP}} |
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| 3 | Production History Graphs | qo, qg , qw, qinj, Yw, GORYg, Pe , Np, Ninj vs time | Production History Overview | | LaTeX Math Block |
|---|
{\rm Y_w} = \frac{q_w}{q_{lis}} |
| LaTeX Math Block |
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{\rm Y_g} = \frac{q_g}{q_o} |
| LaTeX Math Block |
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q_{liq} = q_o + q_w |
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| 4 | Decline Curve Analysis | qo1, qliq1, qinj1,Yw, GORYg, VRR, Pe vs time | Production Forecast |
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| 5 | Recovery Diagnostic | qo1, qliq1, qinj1, Yw, GOR Yg, VRR, Pe, Pem vs RF | Estimate recovery efficiency and pressure decline |
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| 6 | Watercut Diagnostic | YwYw, Ywm vs qtliq | Check for water balance and thief water production | | LaTeX Math Block |
|---|
| {\rm Y_w} =\frac{1}{1 + \frac{K_{ro}}{K_{rw}} \cdot \frac{\mu_w}{\mu_o} \cdot \frac{B_w}{B_o}} |
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| 7 | GOR Diagnostic | GOR, GORmYg, Ygm vs qto | Check for gas balance and thief gas production |
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| 8 | Injection Efficiency Diagnostics | PIR , PIRm vs YwYw | Evaluate WI efficiency | | LaTeX Math Block |
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{\rm PIR} = \frac{Q_o}{Q_i}={ \frac{1}{VRR} }*{ \frac{1}{ \frac{\gamma}{1-\gamma} + [ \frac{B_o}{B_w} - \frac{B_g}{B_w}(GOR - R_s) ] } } |
| LaTeX Math Block |
|---|
| {PIR=\frac{Q_o}{Q_i};} {\qquad} {\gamma}=\frac{Q_w}{Q_w + Q_o} {\quad \Rightarrow \quad} \frac{Q_w+Q_o}{Q_w}=\frac{1}{\gamma} {\quad \Rightarrow \quad} \frac{Q_o}{Q_w}={\frac{1}{\gamma}-1} {\quad \Rightarrow \quad} \frac{Q_o}{Q_w}=\frac{1-\gamma}{\gamma} |
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| 9 | Well Performance Analysis | Pwf_IPR , Pwf_VLP vs qo | Check for the optimal production/injection target | | LaTeX Math Block |
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| P_{wf}=P_e - \frac{1}{J_{PI}} q_o |
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| 10 | Productivity Index Diagnostic | JPI, JPIm vs dP | Check for PI dynamics | | LaTeX Math Block |
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| {\rm J_{PI}} = \frac{Q}{P_e - P_{wf}} {\quad \Rightarrow \quad} P_{wf}=P_e - \frac{1}{PI}Q |
| LaTeX Math Block |
|---|
| J_{PIm}=\frac{q_o}{P_e - P_{wf}} |
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