Mature Water Flood Analysis

Mature Water Flood Analysis (MWFA)

Mature Water Flood Analysis is a workflow for identifying the performance gaps in the mature waterfloods performance.

As a result Mature Water Flood Analysis generates Blocks/Patterns Enhancement List.

Workflow

1. Upload the required data (see below)
2. Check production/injection by Completions, define Reservoirs and Objects for analysis
3. Gridding - Divide the field into Patterns/Blocks/Buckets
4. Calculate STOIIP for each reservoir using blocks
5. Match STOIIP to official numbers by changing the edge Blocks areas
6. Make Plots (by field, by reservoir, by block):History, RF vs HCPVinj, RF vs well spacing, WOR vs Np, VRR vs t
7. Make Maps (by reservoir) showing Blocks: HCPV, HCPVinj, RF, VRR
8. Calculate Blocks Enhancement List
9. Draw conclusions

1. Data Upload

• Create Fields
• Upload Wells
• Upload Deviation Surveys
• Upload Perforations
• Upload Well Log Interpretions
• Upload Reservoirs
• Upload PVT
• Upload Monthly Measures

2. Completions Check

• Look through the Completions with the commingled Reservoirs production
• Decide whether the commingled Reservoirs should be grouped as Objects for the further analysis or treated individually.

This check is valuable when production/injection allocation between the Reservoirs is an issue.

9. Conclusions

The typical actions are:

• Convert producing well to injector
• Increase/Decrease injection rate
• Add/squeeze Perforations
• Drill additional production/injection well

References

Wolcott, D. ; Applied Waterflood Field Development, Energy Tribune Publishing Inc., 2009.