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

Figure 2

Processed surface pressure records of the Detfurth (red) and the Solling sandstone (green) vs. elapsed time (left) and square root of elapsed time (right), red straight line: trend line.

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