Paper submitted to EAGE Annual 2026
Summary
The results of a new 6 degree-of-freedom (6DOF) sensor, ‘Ksphere’, sensing simultaneously in three orthogonal axes realised through 6 component (6C) measurements, have previously been presented (Pedersen et al., 2023), where the sensor measured both the translational linear motion of a particle along an axis and the rotational measurement of angular motion about an axis. These earlier results demonstrated that the sensor could be deployed and used in an offshore setting and assessed the potential of this single sensor prototype unit to directly measure translational and rotational components. Furthermore, the use of the rotational components to denoise the translational components has also previously been demonstrated (Seher et al., 2024).
Building upon the successes of these previous experiments with the 6C sensors, a 3D field trial, which could also be used as a monitor survey for timelapse (4D) purposes, was performed during the summer of 2025 using fifty ocean bottom seismic nodes that incorporate the new 6C sensor. This field trial was conducted on the Breidablikk field on the Norwegian Continental shelf, the results of which will be discussed in this paper.