A fully integrated solution for problematic and complex wells.
From engineering through ranging, wellbore intercept for unconventional and/or energy-transition wells, kill and abandonment, delivered end-to-end by one accountable team. No multi-vendor handoffs, no gaps in the chain.
Engineering
- →Complex P&A & relief well planning
- →Wellbore intercept feasibility studies
- →Ranging signal modeling & survey integration
- →Regulatory & risk documentation
Technology
- →DeadAhead™ wired-pipe AMR-While-Drilling
- →DeadSet™ wireline active ranging
- →CTRWD™ coiled-tubing ranging
- →TopGun™ AI interpretation software
Field Operations
- →Relief well drilling & blowout intercept
- →Well kill & well control
- →Outside-in milling & re-entry
- →Regulator-witnessed permanent P&A
What we solve.
Each service is a dedicated solution, engineered, ranged and executed under one roof.
Relief Well & Blowout Intercept
Deterministic intercept and kill when surface control has failed.
Emergency response →Plug & Abandonment
No-access ranging that seals complex and legacy wells, cutting rig time up to 50%.
Reduce P&A cost →CCUS Well Integrity
Wellbore placement and integrity assurance for carbon capture and storage.
Explore →Geothermal Well Placement
Precise intersection and closed-loop connection for next-generation geothermal.
Explore →Solution Mining Connections
Wellbore intercept for potash, lithium and uranium recovery.
Learn more →Well Re-Entry & Milling
Outside-in milling and re-entry of damaged casing, stuck packers and lost-access wells.
Learn more →SAGD & CSG Twinning
Precise well twinning, spacing and intercept for enhanced unconventional production.
Learn more →Water & Civil Infrastructure
Horizontal water-well drains, multi-well intercepts for municipal supply, and HDD river crossings.
Learn more →Finding one well from another, like GPS for underground wellbores.
Magnetic ranging is the only proven way to deterministically locate and intercept a target wellbore. After drilling, a well's exact position is only known approximately, by 10,000 ft, surveys can be off by hundreds of feet. Hitting a target by conventional means is practically impossible.
Gunnar injects an electrical current that magnetizes the steel of a nearby target well. By measuring the strength and direction of that signal, we know exactly where the target is, and steer toward it in real time, accurate to within an inch at intercept.
Explore our five ranging methods →Five proprietary ranging methods. One software brain.
Chosen for each well's specific geometry, access and risk profile, backed by multiple U.S. patents and an in-house R&D team.
DeadAhead™
Wired drillpipe for continuous ranging while drilling, ~10× the current injection of an analogous wireline tool. World-first commercial deployment.
DeadSet™
MEMS/solid-state wireline AMR with interchangeable sensors and optional gyro.
CTRWD™
Active ranging inside a pressure-contained coiled-tubing BHA, ranges a live well.
Torped™
At-bit magnetic source detected by a receiver in the offset well, vendor-neutral.
EverReady™
No-access ranging from existing MWD/steering data, processed remotely, no new tools.
TopGun™
Web-based suite for automated ranging analysis, 3D visualization and real-time decision support, with a GPT-driven interpretation layer.
CleanCut™
Precision milling simulation that turns intercept geometry into real-world milling parameters, reducing rig time and operational risk.
EverReady™ Software
Non-intrusive ranging from existing MWD/GWD data, fully remote, AI-driven interpretation with proprietary interference processing.
The world's first commercial wired-pipe ranging-while-drilling system.
Continuous ranging from the BHA, no wireline trips. ~10× more current injection than traditional wireline AMR means an earlier locate, a stronger signal and zero re-entry runs for a relief well intercept and kill.
World-first commercial deployment with ExxonMobil, co-presented at SPE/ISCWSA #62 ↗ U.S. Patent 11,781,421 B2, reaffirmed by USPTO PTAB (2025).
The technology, explained by the people who built it.
Proof, not promises.
Intercept · Kill · P&A Relief-Well Intercept, Kill & P&A
Tubing parted at ~1,000 ft with only a 10 ft window below a stuck packer. DeadAhead™ held 5–10 ft separation over ~5,500 ft of continuous ranging, the world's first commercial wired-pipe AMR-WD deployment.
Blowout · Well Kill · P&A Legacy-Well Blowout Intercept
An unpermitted 1950s-era legacy well leaked ~5,000 bbl/day for 116 days of failed surface intervention. CTRWD™ coiled-tubing ranging located and intercepted the unknown geometry at ~1,070 ft MD.
Relief Well P&A · Dual Intercept Relief-Well P&A, Legacy Gas Field
Relief-well P&A of 1950s-era wells at a major legacy gas-storage field. DeadSet™ AMR and EverReady™ PMR overcame missing surveys and a parasite sidetrack.
A defensible moat across technology, execution and integration.
Proprietary technology
DeadAhead™ wired-pipe AMR-WD delivers ~10× the current injection of wireline ranging, backed by a multi-patent estate and in-house R&D.
Proven track record
100% intercept success across 48 projects, including world-record dual 29,500 ft intercepts. Documented and regulator-witnessed.
One integrated call
Engineering, ranging, directional, milling, kill and abandonment by one accountable team, one contract, one timeline.
High barriers to entry
A proprietary fleet of ranging hardware supercharged by AI, and 140+ combined years of expertise on the highest-stakes wells.
Answers built for engineers.
What is a relief well?
A relief well is a separate well drilled to intentionally intersect a blowing or uncontrolled well so it can be killed from below. Modern relief wells use active magnetic ranging to steer to the target with inch-level accuracy at the point of intercept.
When do you need active vs. passive ranging?
Passive ranging (EverReady™) uses the target casing's existing magnetism and works at short range with no extra tools. Active ranging (DeadSet™, DeadAhead™) injects a current to generate a strong, controllable signal, essential for longer ranges, relief wells and blowout intercepts.
How does ranging reduce plug & abandonment cost?
No-access ranging-while-drilling eliminates time-consuming wireline round-trips and open-hole exposure, often cutting roughly half the rig time and millions of dollars versus conventional wireline methods. And while surface intervention looks cheaper per day, it is frequently frustrated by immovable objects or adverse wellbore conditions, so a modern relief-well-style intercept is often more economical than an extended rig-over campaign.
How accurate is a wellbore intercept?
With active ranging, accuracy improves as the drilling well homes in on the target, reaching inch-level precision at intercept, even where conventional surveys are off by hundreds of feet. Ranging error is non-compounding: it shrinks the closer (and deeper) you get, the opposite of dead-reckoning surveys, where error compounds with depth.