Fault Strain Relief Planner

Injection well campaign sizing to bleed stored tectonic moment below a target rupture. All calculations run in the browser.

Target event

Moment magnitude Mw of the event to be prevented

Fault length km along strike

Fault width km down dip

Dip degrees

Seismogenic top km

Seismogenic base km

Offshore

Water depth m, offshore only

Depth range implies width km

Tectonic loading

Slip deficit rate mm per year

Years since last full rupture

Rigidity GPa

Slip deficit m, stored Mw

Fault mechanics

Friction coefficient

Background stress ratio shear over effective normal

Stress drop MPa

Gutenberg Richter b

Relief strategy

Maximum induced magnitude

Target relief percent of stored moment

Campaign duration years of injection

Felt events per day ceiling M 3 and above

Hydrology

Hydraulic diffusivity m2 per s

Injection rate per well m3 per day

Specific storage per metre

Pressure change at fault MPa, blank = derived

Derived requirement MPa at mean covered depth

Drilling

Maximum well depth km true vertical

Lateral length m per branch

Vertical Deviated Horizontal lateral Multilateral

USD per m

Onshore

Offshore

Vertical

Deviated

Horizontal

Multilateral

Summary

Moment ledger

Risk panel

Relief simulator

Scenario overlay on the current plan. Pick how large a quake the fault is holding and how much of that stored moment the campaign tries to bleed off. Relief is capped by the same three limits the plan enforces, and the binding one is named.

Quake intensity

Pressure relief

Site distance km Epicentral distance for the shaking gauge

Strain map and induced swarm

Magnitude before and after

Shaking at site

Plan view

Cross section

Well type breakdown

Sensitivity

Cap magnitude against b value and hydraulic diffusivity. Each cell shows wells required and the residual magnitude after the campaign. All other inputs held at their current values.

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