Table 1 Replacement pressure and confining pressure setting.

From: Characterization of coal reservoir permeability evolution under thermo-mechanical coupling based on fractal theory

Coal sample

Confining pressure (MPa)

Replacement pressure (MPa)

DFS-2

5

0.1–0.2–0.5–1–2–3

DFS-3

10

0.1–0.2–0.5–1–3–5–8

DFS-4

15

2–4–6–8–9–11–12