Acquiring high-resolution seismic data for geothermal exploration in an urban environment

The challenging inner-city location of the seismic line resulted in the shot records being heavily contaminated with environmental noise. However, this noise, along with the normal expression of ground roll and the like, were successfully attenuated and strong broad-band reflectivity was able to be imaged.

As there was a lot of traffic on the streets and railroad, it put the safety of personnel at a higher risk. Therefore, it was decided to work during the night between ca. 00.00am and 5.00am to increase safety (and reduce environmental noise).

Survey was completed in just 8 days, including deployment of nodes, source acquisition, and retrieval of nodes, with a total of 3 people involved.

STRYDE Nodes™ working in combination with the eVibe demonstrated that “zero-carbon acquisition” could be possible. Fully eliminating any CO₂ emissions during the deployment/retrieval of the nodes and per vibrator point.

The STRYDE Node™ and eVibe data shows higher resolution, better continuity, and sharper imaging in both the near surface as well as in the deeper subsurface when compared to the explosive survey of 2021.

STRYDE Nodes™ are compact and affordable. This means reduced outlay on receiver equipment, faster layout and retrieval using fewer field crew and vehicles, and less line clearing

Environmentally damaging line clearing is eliminated, since equipment can be hand carried. You also need far fewer vehicles, reducing CO₂ emissions and land disruption

STRYDE allows users to achieve a significantly greater trace density for any given budget, leading to a significant uplift in seismic image quality

The lightweight design of the nodes means you need fewer people in the field, reduced driving and line clearing - minimising exposure to HSE risk and reducing costs

Use of low-environmental impact seismic equipment meant that survey permits were not required