DFIT Calibrated Shmin
7,107 psi
Updated Breakdown Pressure
8,268 psi
Net Pressure
1,450 psi
BHTP
9,282 psi
Surface Treating Pressure
5,959 psi
Pump Rate
25.2 bpm
Well Overview
TVD 10,200 ftMD 10,550 ftInclination 2.8°Azimuth 125°Hole Size 8.5 inReservoir Top 9,500 ftReservoir Base 10,550 ftNet Pay 45 ftFormation SandstoneTemperature 232°FLast update 6/28/2025, 6:45 PM · Engineer J. SmithCommon MEM / Target Interval Summary
Calibrated properties — Well GM-01
| Top | 8,500 ft MD |
| Base | 9,000 ft MD |
| TVD | 10,000 ft |
| Gross Thickness | 45 ft |
| Net Pay | 45 ft |
| NTG | 1.00 |
| Porosity | 0.22 |
| Permeability | 100 mD |
| Young's Modulus | 2.0×10⁶ psi |
| Poisson Ratio | 0.25 |
| Closure Stress | 7,100 psi |
| Poroelastic Constant | 0.65 |
| Friction Angle | 32° |
| Shmin | 7,107 psi |
| Frac Gradient | 0.88 psi/ft |
| Fracture Toughness | 1,450 psi·√in |
DFIT Analysis
Pressure decay after shut-in — G-function / ACA
After-closure analysis: closure picked at 7,100 psi — matches the MEM Shmin row; breakdown updated to 8,268 psi.
Stress Profile vs Depth
Shmin across the target — stress reversal
Barrier stress contrast — upper +650 psi (1.09×), lower +850 psi (1.12×) above the interval Shmin: favorable for height containment.
Fracture Geometry (Design)
Width profile — max 0.29 in @ 8,754 ft
Perforated interval 8,742–8,766 ft; design height 50 ft (8,729–8,779 ft).
Design Summary
Current design run
| Fracture Half-Length (Xf) | 180 ft |
| Fracture Height | 50 ft |
| Avg Conductivity (Cfd) | 0.85 |
| Avg Proppant Concentration | 3.2 lb/ft² |
| Fluid Volume | 1,000 bbl |
| Proppant Mass | 93,000 lbm |
| Stages | 2 |
| Design Efficiency | 80% |
Pumping Schedule
Pad → ramp → flush
| Step | Fluid System | Vol (bbl) | Prop (lbm) | Rate (bpm) |
|---|---|---|---|---|
| 1 | Linear Gel | 10 | 0 | 20 |
| 2 | Linear Gel | 50 | 0 | 20 |
| 3 | Lin. Gel + 0.5 ppa | 20 | 40 | 10 |
| 4 | Lin. Gel + 0.5 ppa | 11 | 23 | 10 |
| 5 | Lin. Gel + 2.0 ppa | 34 | 68 | 10 |
| 6 | X-linked + 3.0 ppa | 34 | 101 | 10 |
| 7 | X-linked + 3.2 ppa | 10 | 31 | 10 |
| 8 | X-linked + 4.0 ppa | 34 | 68 | 10 |
| 9 | X-linked + 4.2 ppa | 10 | 21 | 10 |
| 10 | Flush | 10 | 0 | 10 |
Pressure Components
Surface pressure build-up by component
Peak surface treating pressure 5,959 psi → BHTP 9,282 psi (incl. hydrostatic); net pressure 1,450 psi.
Perforation & Cluster Distribution
8,742–8,766 ft MD
24 ft perforated (8,742–8,766 ft MD) · 8 spf · 60° phasing · 0.42" entry holes — 192 holes total
| Cluster | Depth (ft) | Δ (ft) | Length (ft) |
|---|---|---|---|
| 1 | 8,742 | — | 12 |
| 2 | 8,753 | 11 | 12 |
| 3 | 8,764 | 11 | 12 |
| 4 | 8,775 | 11 | 12 |
| 5 | 8,786 | 11 | 12 |
Containment Analysis
Frac height vs stress barriers
CONTAINED — Frac height fully inside net pay — barrier stress contrast > 1.05
Stress contrast: upper +650 psi (1.09×) · lower +850 psi (1.12×)
Fault Interaction
Fracture wing vs mapped fault
NO INTERACTION — Fault distance > 2 × Xf (620 > 360 ft)
Uncertainty Summary
P10 / P50 / P90 design outcomes
| Variable | P10 | P50 | P90 |
|---|---|---|---|
| Half-Length Xf (ft) | 160 | 180 | 200 |
| Height (ft) | 40 | 50 | 60 |
| Width (in) | 0.25 | 0.30 | 0.35 |
| Cd (dimensionless) | 0.85 | 1.30 | 1.80 |
| Conductivity (md-ft) | 4,500 | 6,000 | 7,500 |
Sensitivity — Fracture Half-Length (ft)
Tornado around P50 180 ft
Risk Matrix
Likelihood × consequence
Consequence →
Highlighted Risks
Ranked design risks
- Early Screenout30%High
- Frac Hits Offset Wells20%Medium
- Proppant Flowback15%Low
- Poor Containment10%Low
Requires Design Optimization
Open items before execution
- Frac HeightPoor containment margin
- ConductivityLow Cd (0.85)
- Net Pressure TrendMonitoring
Recommendations
Design changes before pumping
- 1Increase pad volume by 15% to reduce early-screenout risk.
- 2Stair-step rate to 22 bpm for better height control.
- 3Consider TSO (tip screenout) design to raise conductivity.
- 4Monitor post-frac BHP for 48 hours.
Risk Level Guide
Demo data — SmartFrac goes live when the fracturing dataset is connected.