Design
ClusterIQ
A stage is only as good as its worst cluster. ClusterIQ solves the parallel-cluster rate split under a shared bottomhole pressure — perf friction plus local stress bias — then scores how uniform that split actually is and searches a perf-count / diameter / rate box for a design that holds limited entry. Pair it with multi-sector modeling when the stress bias comes from toe-heel rock changes rather than perf erosion.
Cluster uniformity
Uniformity (1 − CV)
93.2%
Toe/heel bias
+5.9%
Heel half minus toe half
Min Δp_perf
713 psi
Max Δp_perf
1063 psi
Formation layers can also be loaded and reviewed on the formation library page.
Cross-section cell view
A vertical slice through the rock along the fracture, with the well at the centre. Each cell prints the formation value at that depth; the outlined box is the fracture this cluster's 14.2 bpm makes.
Rock data behind these cells
3 layers loaded · replace them with your own formation table to make this picture yours. Drop a file anywhere on this box.
Columns: label · topTvdFt · baseTvdFt · youngsModulusPsi · poissonRatio · toughnessPsiSqrtIn · optional carterCtFtPerSqrtMin, biotAlpha, bulkDensityLbPerFt3.
Hydraulic half-length
610 ft
Solved from this cluster's rate
Propped half-length
99 ft
Where the pack still conducts
Fracture height
170 ft
-85 → 85 ft in the layer frame
Closure stress range
5796 – 6255
psi · modelled from layer Poisson ratio + gradients
Height grew out of the pay — 25 ft into the upper barrier and 25 ft into the lower barrier. Upper barrier carries +182 psi against the pay, lower barrier +366 psi.
Fracture simulation from these cells
Pressure, fluid, proppant and closure marched through the same rock the cells above print — every layer's stiffness, toughness, leak-off and closure stress is an input.
Bottomhole pressure
5956 psi
closure 5812 + net 145
Half-length
610 ft
propped 99 ft
Height
120 ft
60 ft up · 60 ft down
Average width
0.105 in
max 0.134 in
Fluid staying in
33.3 %
779 bbl pumped
Proppant placed
60.0 klb
1.83 ppg average
Settled bank
95 ft
Closure
still open
ISIP 5956 psi
Layers the fracture swept
| Layer | Swept (ft) | Closure (psi) | E (Mpsi) | Ct (ft/√min) |
|---|---|---|---|---|
| Pay | 120 | 5812 | 4.20 | not measured |
- · Rock read from 1 swept layer: Pay 120 ft.
- · Closure stress at the perforation 5812 psi (modelled from the cells' Poisson ratio and your gradients).
- · No leak-off column in the rock data — the calibrated pad-scale Carter coefficient was used.
- · Height stayed inside the pay for the whole pump.
- · Still open 120 min after shut-in — extend the shut-in window to see closure.
Rate split (heel → toe)
- C115.5 bpm1063 psi
- C215.0 bpm993 psi
- C314.5 bpm923 psi
- C413.9 bpm853 psi
- C513.3 bpm783 psi
- C612.7 bpm713 psi