Wellbore Genius

Performance modeling

v1.0Solver: OK

Downhole Performance

Optimal hydrostatic, temperature, depth and wellbore pressure for your well + fluid configuration.

AppendixChartsFile.pdfExpiresCSV schema ↗

Operating envelope — downhole performanceOut of envelopeFriction factor· Friction factor 0.59 above red limit 0.30QC score· QC score 80 % below amber limit 85 %Edit thresholds

Envelope timeline along depth

Out of envelopeEdit thresholds

Hydrostatic, temperature and flowing wellbore pressure as percent of their red limit against TVD. Gradient limits scale with depth (0.6 psi/ft hydrostatic, 0.8 psi/ft pressure); temperature uses a 350 °F tool rating.

Envelope timeline along depth

Hydrostatic
Worst point
3,707 psi @ 7,920 ft
Leaves green
—
Turns red
—
Wellbore pressure
Worst point
4,848 psi @ 3,120 ft
Leaves green
3,120 ft
Turns red
3,120 ft
Temperature
Worst point
255 °F @ 12,000 ft
Leaves green
—
Turns red
—

Unit system

Switches all input labels and computed outputs.

Mode

Temperature: Geothermal gradient [°F/1000 ft] = 15 is outside the typical range 1–3.↳ Typical sedimentary basins: 1.4–1.8°F/1000 ft. Geothermal/HPHT plays can exceed 2.5°F/1000 ft.

Quick load

Mixture composition

Sodium nitrate (NaNO₃) [wt%]

Flour (diverter) [wt%]

Epoxy resin (mixed A+B) [wt%]

Black powder (carrier slug) [wt%]

Carrier temperature [°F]

Water (balance) [wt%]

100.0 %

Effective ρ [ppg]

8.35

Effective μ [cP]

1.00

Injection T [°F]

75.0

Pending downhole exotherm [BTU/lb]

Fluid composition

Mud weight [ppg]*

Liquid viscosity [cP]*

Injection temperature [°F]*

Well geometry

Total depth [ft]*

Tubing ID [in]*

Tubing OD [in]*

Surface temperature [°F]*

Geothermal gradient [°F/kft]*

Must be ≤ 5 °F/kft

Operating conditions

Pump rate [bpm]*

Surface pressure [psi]*

Choke pressure [psi]*

Pump time [min]*

Pressure environment & friction

Gas column above interface

Gas gradient [psi/ft] (optional)Gas-liquid interface depth [ft] (optional)

When set, depths above the interface use the gas gradient instead of mud weight.

Multi-zone mud profile (optional)

No zones — single mud weight is used throughout. Add zones to override density over depth intervals.

Formation / pore pressure

Formation pressure [psi] (optional)Pore-pressure gradient [psi/ft] (optional)

Used to compute overbalance vs effective BHP. Explicit formation pressure overrides the gradient.

Annular friction loss

Friction loss [psi] (optional)

Subtracted from BHFP for circulating conditions.

Constrained solver

Find the depth interval and parameter set that maximises performance while meeting hydrostatic, temperature, and BHFP constraints.

Search space

Depth [ft] min

Depth [ft] max

Mud weight [ppg] min

Mud weight [ppg] max

Pump rate [bpm] min

Pump rate [bpm] max

Injection T [°F] min

Injection T [°F] max

Constraints

Hydrostatic min [psi]

Hydrostatic max [psi]

BHFP min [psi]

BHFP max [psi]

Flowing BHT min [°F]

Flowing BHT max [°F]

Objective

Samples (LHS)

Sensitivity sweep · top-K compare

Vary one weight or constraint and watch the top K candidates move side-by-side.

Sweep axis

Min

Max

Steps

Top K

Y-axis metric

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Canonical solver inputsReady

Depth12000 ft (ft)

Temperature75 °F (°F)

Pressure4000 psi (psi)

Time60 (min)

Schema mismatchResults hidden — 2 share-link fields need fixing

Geothermal gradient: Number must be less than or equal to 10; Expiration: Number must be less than or equal to 315361000000. Fix the highlighted fields above to see results and re-enable export.