4:29 The challenge
- →Twin new wells to existing solution-mining cavern wells to open hydraulic communication.
- →Pass within feet of the target at ~8,000+ ft MD through strong, variable salt-induced anomalies.
- →MWD magnetometers saturated near the target, the strongest-signal zone was unusable.
Our solution
Passive magnetic ranging while-drilling on the directional BHA, using MWD XYZ data. Gunnar directed targeted PMR shot collection, split the interference onto axial / cross-axial components to fix the pass-by point, distance and direction, then advised the sidetrack strategy in real time.
Targets located to ±1 ft, hydraulic communication achieved
The result
±1 ft
to target, across multiple wells & sidetracks at ~8,600 ft MD
- ·Located target wellbores to ±1 ft across the program
- ·Pass-by separations resolved from 3–15 ft at 8,060–8,680 ft MD
- ·Guided successive sidetracks to converge on the target for communication
- ·Same-day turnaround, preliminary report within hours, final overnight
Ranging
PMR
Deployment
BHA While Drilling
Re-entry
No
Location
Utah, USA
Year
2023
Watch, related footage
Full video library → 4:29 
2:03 Solution Mining Well Remediation with Wellbore Intersection | Case Study
0:53