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Completion Cost Optimizer

PRO

Optimize frac stage count vs EUR uplift. Find the economic sweet spot where marginal cost exceeds marginal revenue.

Parameters

Lateral Length (ft)

Base EUR (Mbbl, 0 stages)

Max EUR (Mbbl, asymptote)

Half-saturation (stages at 50% max)

Cost per Stage ($K)

Fixed Well Cost ($MM)

Oil Price ($/bbl)

LOE ($/bbl)

Min Stage Count

Max Stage Count

Optimal Stages

Max NPV

EUR at Optimum

Total Well Cost

Stage Spacing

$/bbl Finding Cost

Stages	Spacing (ft)	EUR (Mbbl)	Marginal EUR	Total Cost ($MM)	Revenue ($MM)	NPV ($MM)

How this was calculated

EUR model: EUR(n) = Base + (MaxEUR - Base) × n / (n + K_half). This is a Michaelis-Menten / saturation curve modeling diminishing returns.

NPV: Revenue = EUR × (Oil Price - LOE). Cost = Fixed + n × Stage Cost. NPV = Revenue - Cost (simplified, no discounting for screening).

Optimal: The stage count that maximizes NPV. Beyond this point, the marginal cost of an additional stage exceeds the marginal revenue.

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