Perf Efficiency Calculator

Perforation Efficiency Calculator

Model cluster flow distribution and estimate the impact of improved uniformity on your completions performance.

Stage Parameters

Clusters per stage 5

Designed perf friction (psi) 1,500

Observed treating pressure (psi) 7,000

Pipe friction estimate (psi) 1,200

Estimated Results

Perforation Efficiency

39.5%

Ratio of designed perf friction to actual available perf friction

Estimated Uniformity Index

0.47

0 = all flow through one cluster, 1 = perfectly uniform distribution

Estimated Cluster Flow Distribution

Bar length represents relative flow rate per cluster. Colors indicate flow quality: green (on-target), yellow (moderate), red (under-stimulated).

What If You Improved UI by 0.1?

Improved UI: 0.57

Estimated production uplift: +17.0%

A 0.1 Uniformity Index improvement correlates to approximately 8% production uplift based on published field studies (100,000+ stages).

Simplified model. This calculator uses standard industry correlations for perforation friction and flow distribution. Net pressure is assumed at 2,000 psi as a simplification. Actual cluster-level behavior depends on formation properties, completion geometry, and fluid systems. SAFA provides real-time, acoustic-based measurements that are more precise than any model.

Perforation efficiency estimated using surface pressure decomposition. Uniformity Index derived from efficiency using published SPE correlations. The net pressure assumption of 2,000 psi represents a mid-range value; actual net pressure varies by formation and should be determined from DFIT or real-time diagnostics. Production uplift correlation of ~8% per 0.1 UI improvement based on field-validated data across multiple basins.

See How SAFA Measures This in Real Time

Instead of estimating perforation efficiency from surface data, SAFA acoustically measures cluster-level flow distribution in real time — no models, no assumptions.

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