P026 SELF POTENTIAL MEASUREMENTS DURING HYDRAULIC FRACTURING OF BUNTER SANDSTONES INTRODUCTION 1 Self potentials (SP) at the earth’s surface are not only caused by electrochemical reactions but also by electrokinetic phenomena in the subsurface. The electrokinetic or streaming potentials originate from the movement of fluids in porous rocks which is due to a pressure gradient. Laboratory measurements show a clear correlation between the injection pressure and the streaming potential (e.g. MOORE et al. 2003). The electrokinetic potentials can be used to study the movement of water in near-surface layers (REVIL et al. 2002). Moreover within the last years several publications


Article metrics loading...

Loading full text...

Full text loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error