What is ranging? It's like underground GPS, accurate to an inch.
After drilling, a well's exact position is only known approximately, by 10,000 ft, the actual wellbore can drift hundreds of feet from its surveyed position. That makes intentionally hitting a target wellbore, for a relief well, a blowout intercept or a complex re-entry, practically impossible by conventional means.
The problem
All surveying, magnetic or gyro, suffers compounding error. Ellipses of uncertainty routinely reach hundreds of feet and can never be reduced to zero. Intersecting a well by dead reckoning (conventional surveying) is practically impossible.
Our solution
We inject electrical current that travels through rock and energizes the target's steel casing, generating a magnetic signal. By measuring its strength and direction, we know exactly where the target well is, and steer toward it in real time.
The payoff
Conventional surveys grow more uncertain with depth. Ranging does the opposite, the error shrinks as you home in on the target, down to within an inch at intercept.
DeadAhead™
Wired-pipe active magnetic ranging that turns the relief well into a ranging-while-drilling operation.
DeadSet™
A no-access wireline active ranging system built from the ground up for first-time intersection.
CTRWD™
Real-time magnetic ranging inside a fully pressure-contained coiled-tubing drilling assembly.
Torped™
Real-time ranging data at the bit, vendor-neutral, and deployable in virtually any BHA.
EverReady™
No-access, MWD-style magnetic ranging computed from your existing steering data, on short notice, processed remotely.
MaxWell™
A casing-magnetization service that strengthens the passive ranging signal, for detection where active ranging struggles.
The brain behind every intercept.
TopGun™ turns raw magnetic data into real-time intercept decisions, the connective tissue that lets one team run engineering, ranging and steering as a single loop.
TopGun™
A web-based suite that turns raw magnetic measurements into real-time intercept decisions, automated analysis, 3D visualization and a GPT-driven interpretation layer.
Learn more →CleanCut™
A precision milling simulation that converts the intercept solution into the milling parameters the field crew executes, cutting rig time and risk at the point of contact.
Learn more →EverReady™
Non-intrusive ranging interpretation from existing survey data, fully remote, AI-driven, with proprietary interference processing.
Learn more →
DeadAhead™, the world's first commercial wired-pipe ranging-while-drilling system.
Continuous ranging from the bottom-hole assembly, no wireline trips, ~10× the injection current of traditional wireline AMR, for an earlier locate, a stronger signal and zero re-entry runs.
Explore DeadAhead™ →U.S. Patent 11,781,421 B2, reaffirmed by USPTO PTAB (2025). Co-presented at SPE/ISCWSA #62, Alaska, Sept 2025.