Good well integrity is vital to eliminate the risk of uncontrolled release of formation fluids throughout the life of the well. Our ArrayLog™ services utilise distributed acoustic (iDAS™) and distributed temperature (ULTIMA™ DTS) data to detect fluid movement.
When well parameters point to the failure of a barrier it is necessary to identify the source of the failure in order to plan remediation, or to demonstrate the continued integrity of the barrier for normal operations. Distributed fibre optic sensing offers a unique way to quickly and efficiently detect the fluid movement which may indicate barrier failure.
The iDAS and ULTIMA DTS can detect leaks or flow behind casing without the need to intervene in the well, utilising pre-exisiting fibre optic cables. The optical fibre behaves as a sensor array so the entire fibre path is surveyed simultaneously allowing well integrity issues at undetermined depths to be detected and localised almost immediately.