Determination of Hydraulic Properties of a Large Self-Propped Hydraulic Fracture in the Geothermal Research Borehole Horstberg Z1 in the Northwest German Basin

Table 2

Predetermined parameter-values used for the fitting procedure. Hydraulic parameter values for the Detfurth and Solling, after [8] (pp.50-54).

Parameter	Symbol	Value	Unit
Fracture length	2xf	1000; 2000	m
Fracture height	hf	125	m
Distance fracture-borehole	ds	25	m
Viscosity	μ	3·10^-4	Pa·s
Test duration	te	18	h
Flow rate	Q	7.6·10^-3	m^3/s
Transmissivity Detfurth	TD	1.5·10^-14; 9·10^-15	m^3
Transmissivity Solling	TS	3.2·10^-13	m^3
Storage coefficient Detf.	SD	2.5·10^-10	m/pa
Storage coefficient Solling	SS	1.5·10^-9	m/pa