Primary Production Analysis is the specific workflow and report template on Primary Well & Reservoir Performance Indicators.
Primary Production Analysis is built around production data against material balance and require current FDP volumetrics, PVT and SCAL models.
It includes well-by-well diagnostics and gross field diagnostics, but may be extended to sector-by-sector diagnostics.
PRIME includes the following metrics:
Metric name | Diagnostic plots | Objectives | |||||
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1 | Production History Map | Background = STOIIP & Structure Bubbles = qo, qg , qw, qinj Number = VRR, Pe | Production Distribution Overview | Cumulative Voidage Replacement Ratio
Instantaneous Voidage Replacement Ratio
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2 | Recovery Map | Background = STOIIP & Structure Bubbles = Qo, Qg , Qw, Qinj Number = VRR, Pe | Recovery Distribution Overview | Recovery Factor
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3 | Production History Graphs | Left Axis = qo, qg , qw, qinj, Rigth Axis = Yw, GOR, Pe , Np, Ninj Hor Axis = Elapsed Time | Production History Overview |
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4 | Decline Curve Analysis | Left Axis = qo1, qliq1, qinj1, Rigth Axis = Yw, GOR, VRR, Pe Hor Axis = Elapsed Time | Production Forecast | ||||
5 | Recovery Diagnostic | Left Axis = qo1, qliq1, qinj1 Rigth Axis =Yw, GOR, VRR, Pe, Pem Hor Axis = RF | Estimate recovery efficiency and pressure decline | ||||
6 | Watercut Diagnostic | Left Axis = Yw, Ywm Hor Axis = qliq | Check for water balance and thief water production |
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7 | GOR Diagnostic | Left Axis = GOR, GORgm Hor Axis =qo | Check for gas balance and thief gas production | ||||
8 | Injection Efficiency Diagnostics | Left Axis = PIR , PIRm Hor Axis = Yw | Evaluate WI efficiency |
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9 | Well Performance Analysis | Left Axis = Pwf_IPR , Pwf_VLP Hor Axis = qo | Check for the optimal production/injection target |
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10 | Productivity Index Diagnostic | Left Axis = JPI, JPIm Hor Axis = dP = Pwf - Pe | Check for PI dynamics |
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Below is the list of the production properties involved on the above metrics.
Property Abbrevy | Property Name | Formula | ||
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VRRcum | Cumulative Voidage Replacement Ratio |
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VRRinst | Instantaneous Voidage Replacement Ratio |
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RF | Recovery Factor |
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Yw | Watercut |
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GOR | Gas-Oil Ratio |
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qliq | Liquid rate |
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Ywm | Watercut model |
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PIR | Production Injection Ratio |
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PIRm | Production Injection Ratio Model |
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JPIo | Bottom-hole pressure |
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Productivity Index Diagnostic | Left Axis = JPI, JPIm Hor Axis = dP = Pwf - Pe |
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Fig. 1. Production History Map | Fig. 2. Recovery Map | Fig. 3. Pressure Diagnostic |
Fig. 4. Decline Curve Analysis | Fig. 5. Recovery Diagnostic | Fig. 6. Watercut Diagnostic |
Fig. 7. GOR Diagnostic | Fig. 8. Injection Efficiency Diagnostics | Fig. 9. Well Performance Analysis |
Fig. 10. Productivity Index Diagnostic |