Geofluids

Research Article

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

Table 3

Values of fracture transmissivity Tf, storage coefficient Sf, diffusivity Df, and injectivity index IIf determined by the fitting procedure for the two limiting values of fracture lengths 2xf and Detfurth transmissivity TD. Values for different horizontal distances ds between fracture and borehole in the Solling are not included since their effect was minor. TD: transmissivity of the Detfurth.
TD (m3)2xf (m)Tf (m3)Sf (m/pa)Df (m2/s)IIf (m3/(pa·s))
1.5·10-1410004.1·10-142.3·10-90.0591.1·10-9
20001.9·10-144.4·10-100.141.0·10-9
0.9·10-1410004.4·10-142.6·10-90.0561.2·10-9
20002.2·10-146.5·10-100.111.2·10-9