Innovative land seismic data acquisitions for CO₂ and energy storage applications

As part of the global effort to reduce CO₂ atmospheric levels, the interest towards Geological Carbon Storage has increased significantly. Seismic investigations are important to identify areas where the geological conditions are suitable for safe and sustainable storage. We present an innovative example of land seismic acquisition performed in Denmark to image the sedimentary stratigraphy in a candidate area for CO₂ storage. To achieve large investigation depths and at the same time guarantee dense spatial coverage at shallow depths, the data were recorded with a combination of geophones placed in a fixed geometry and by a set of more closely spaced Micro-Electro-Mechanical (MEM)-based recorders mounted to a moving landstreamer. Compared to the wireless data, the landstreamer acquisition provided data of good quality and with the additional advantage of high resolution at shallow depths. Complementary use of reflection seismic imaging from both wireless and landstreamer data, provides information on the subsurface in a wide depth range, making such a survey highly promising for this purpose.