5:12 THE CHALLENGE
A storage site is only as secure as its leakiest well.
CO₂ storage complexes are often co-located with depleted oil & gas fields riddled with legacy wells, many old, poorly documented, or with degraded integrity. Any one of them can become a leakage pathway that undermines the entire project and its regulatory standing.
Operators must demonstrate to regulators that every well is located, sealed and monitorable, a requirement conventional methods struggle to meet when wells are lost or inaccessible.
THE GUNNAR APPROACH
Find every well. Seal it. Prove it.
Gunnar's magnetic ranging locates and intercepts legacy and injection wells with inch-level accuracy, enabling permanent zonal isolation through relief-well intervention even where surface access is gone.
The same precision supports placement of injection and monitoring wells and generates the integrity evidence that underpins a credible MRV (monitoring, reporting and verification) plan.
SCOPE OF WORK, ONE INTEGRATED TEAM
Ranging-grade integrity for the carbon economy.
01
Legacy well location
Find and intercept undocumented or lost wells within a storage complex.
02
Zonal isolation
Relief-well intervention to permanently seal leakage pathways.
03
Injection well placement
Precise wellbore positioning for CO₂ injection targets.
04
Integrity assurance
Verification of seal placement to support regulatory approval.
05
MRV support
Integrity data feeding monitoring, reporting and verification plans.
06
Regulatory documentation
Evidence packages aligned to carbon-storage permitting requirements.
TECHNOLOGY DEPLOYED
Proprietary tools for this application.
WATCH, FROM THE FIELD
See it in motion.
5:12 FREQUENTLY ASKED
CCUS Well Integrity, your questions, answered.
Why does CCUS need magnetic ranging?
Carbon storage requires verified zonal isolation of every well in the storage complex. Many legacy wells are lost or inaccessible; magnetic ranging locates and intercepts them so they can be permanently sealed, something conventional methods often cannot achieve.
How does this support MRV?
Precise, verifiable seal placement produces the integrity evidence regulators require for monitoring, reporting and verification. Knowing exactly where each well is and that it is sealed underpins a credible storage permit.
Can you seal wells that aren't on record?
Yes. Passive and active ranging can locate undocumented or 'ghost' wells, and intercept drilling allows them to be sealed even without usable surface access.
Do you also place injection and monitoring wells?
Yes. The same precision wellbore-positioning capability used for intercepts supports accurate placement of CO₂ injection and monitoring wells.