Wellbore Genius

EDFM + MINC

Analytical EDFM face transmissibility T_mf = C·k·A/⟨d⟩ (Li-Lee 2008) plus a MINC nested-shell 1-D implicit-Euler transient with Dirichlet fracture BC. Field units.

When to use this tool

Reach for EDFM + MINC when the matrix→fracture transfer time τ is within ~10× of your forecast horizon (multi-week to multi-month). For short shut-ins where τ ≫ horizon, single-porosity is accurate enough — use the workflow calculator to check.

← Downhole workflow (τ check)DFN plan-view Realism comparison

Inputs

Matrix k [mD]

1e-6 – 1e4 mD

Viscosity μ [cp]

0.05 – 1000 cp

Matrix cell size ⊥ frac [ft]

0.1 – 1000 ft

Contact area A [ft²]

1 – 1e6 ft²

MINC shells N [-]

integer 2 – 50

Outer matrix half-thickness [ft]

0.1 – 1000 ft

Porosity φ [-]

1e-4 – 0.6

c_t [1/psi]

1e-8 – 1e-2 1/psi

Fracture BC p [psi]

0 – 30 000 psi

Initial matrix p [psi]

0 – 30 000 psi

Δt [days]

1e-4 – 365 days

Steps [-]

integer 1 – 100 000

⟨d⟩ EDFM [ft]

5.000

T_mf [ft³/day/psi]

5914.6667

Σ influx [ft³/ft²]

0.0210

Import CSV

MINC transient charts

MINC per-shell pressure history (table)

Step	t [d]	Shell 0 [psi]	Shell 1 [psi]	Shell 2 [psi]	Shell 3 [psi]	Shell 4 [psi]	Shell 5 [psi]
0	0.0	4000	4000	4000	4000	4000	4000
3	3.0	4000	4000	4000	4000	4000	4000
6	6.0	4000	4000	4000	4000	4000	4000
9	9.0	4000	4000	4000	4000	4000	4000
12	12.0	4000	4000	4000	4000	4000	4000
15	15.0	4000	4000	4000	4000	4000	4000
18	18.0	4000	4000	4000	4000	4000	4000
21	21.0	4000	4000	4000	4000	4000	4000
24	24.0	4000	4000	4000	4000	4000	4000
27	27.0	4000	4000	4000	4000	4000	4000
30	30.0	4000	4000	4000	4000	4000	4000
33	33.0	4000	4000	4000	4000	4000	4000
36	36.0	4000	4000	4000	4000	4000	4000
39	39.0	4000	4000	4000	4000	4000	4000
42	42.0	4000	4000	4000	4000	4000	4000
45	45.0	4000	4000	4000	4000	4000	4000
48	48.0	4000	4000	4000	4000	4000	4000
51	51.0	4000	4000	4000	4000	4000	4000
54	54.0	4000	4000	4000	4000	4000	4000
57	57.0	4000	4000	4000	4000	4000	4000