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.
The PRIME workflow has certain specifics for oil producers, water injectors, gas injectors and field/sector analysis.
The PRIME analysis is
Obviously, PRIME does not pretend to predict pressure and reserves distribution as 3D dynamic model does.
It only provides hints for misperoforming wells and sectors which need a further focus.
Primary Production Analysis includes the following metrics:
Metric name | Diagnostic plots | Objectives | |
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1 | Production History Map | Background = Structure Bubbles = qo, qg , qw, qinj Number = CurVRR, Pe | Production Distribution Overview |
2 | Recovery Map | Background = STOIIP Bubbles = Qo, Qg , Qw, Qinj Number = CumVRR, Pe | Recovery Distribution Overview |
3 | Cross-section | Background = STOIIP & Structure Bubbles = VRR Number = Pe , Pem | |
3 | Production History Graphs | Left Axis = qo, qg , qw, qinj, Rigth Axis = Yw, GOR, Pe , Np, Ninj Hor Axis = Elapsed Time | Production History Overview |
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 |
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 |
9 | Well Performance Analysis | Left Axis = Pwf_IPR , Pwf_VLP Hor Axis = qo | Check for the optimal production/injection target |
10 | Productivity Index Diagnostic | Left Axis = JPI, JPIm Hor Axis = dP = Pwf - Pe | Check for PI dynamics |
Below is the list of the production properties involved in the above metrics.
Property Abbrevy | Property Name | Formula | ||
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VRRcum | Cumulative Voidage Replacement Ratio |
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VRRcur | Current Voidage Replacement Ratio (month over month) |
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RF | Recovery Factor |
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Yw | Watercut (production) |
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Ywm | Watercut (proxy-model) |
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GOR | Gas-Oil Ratio (production) |
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GOR_m | Gas-Oil Ratio (proxy-model) |
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qLIQ | Liquid rate |
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PIR | Production Injection Ratio (production) |
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PIRm | Production Injection Ratio (model) |
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JO | Oil Productivity Index |
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JPI | Total Productivity Index (production) |
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JPIm | Total Productivity Index (model) |
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jPI | Total Specific Productivity Index |
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jPIm | Total Specific Productivity Index (model) |
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Fig. 1.1. Production History Map | Fig. 1.2. Recovery Map |
Fig. 2.1. Cross-section & PLT, permeability, GOC, OWC | Fig. 2.2. Cross-section & PLT, permeability, GOC, OWC |
Fig. 3.1. Production History Graphs | Fig. 3.2. Production Forecasts |
Fig. 4.1. Recovery History | Fig. 4.2. Recovery Forecasts |
Fig. 5.1. WOR Diagnostic | Fig. 5.2.. GOR Diagnostic |
Fig. 7. Productivity Index Diagnostic | Fig. 7. Injectivity Index Diagnostic |
Fig. 6. Injection Efficiency Diagnostics |
Fig. 1. Production History Map | Fig. 2. Recovery Map | Fig. 3. Cross-section & PLT |
Fig. 4. Production History Graphs | Fig. 5. Decline Curve Analysis | Fig. 6. Recovery Diagnostic |
Fig. 7. Watercut Diagnostic | Fig. 8. GOR Diagnostic | Fig. 9. Injection Efficiency Diagnostics |
Fig. 10. Well Performance Analysis (VFP + IPR) | Fig. 11. Productivity Index Diagnostic | Fig. 12. Well Completion & PLT |
Fig. 1. Production History Map | Fig. 2. Recovery Map | Fig. 3. Cross-section & PLT |
Fig. 4. Injection History Graphs | ||
Fig. 10. Well Performance Analysis (VFP + IPR) | Fig. 11. Injectivity Index Diagnostic | Fig. 12. Well Completion & PLT |