In-situ Distributed Strain Sensing data from the Zeerijp-3a well of the Groningen gas field, Netherlands. Period 2015-2019.

The Groningen gas field is the largest gas field in Europe. Gas production in this field has led to seismicity and surface subsidence, both believed to be caused by compaction of the underlying reservoir sandstone. In 2015, the field operator (Nederlandse Aardolie Maatschappij - NAM) installed a fibre optic cable in the Zeerijp-3a well, at a true vertical depth of about 2900 to 3200 m, i.e. in and around the gas reservoir. The Zeerijp-3a well is situated in the center of the field, where seismicity (<3.4 M) and subsidence (up to 34 cm) are both greatest. The fibre optic cable allows real-ti... Mehr ...