When the wellbore won't let you back in.
Obstructions, collapsed casing, stuck tubing and unrecorded sidetracks can make a wellbore impossible to re-enter by conventional means, stranding production, integrity work or abandonment.
High-inclination and motherbore exit/re-entry scenarios push standard rig and wireline operations past their limits.
Range to the target, then mill back in.
Gunnar uses active ranging to locate the target wellbore precisely, then mills in from outside to re-establish communication, bypassing fish and obstructions that block a conventional path.
Compact, under-pressure coiled-tubing systems handle high-inclination and deep, small-tubular re-entries where standard operations struggle, with continuous well-control barriers in place.
Access restored, integrity intact.
Proprietary tools for this application.
Where we've done it.
Urban Legacy-Well Locate & Re-Entry
Coiled-Tubing Sidetrack & S-Curve Re-Drill
High-Angle Intercept, Mill & Re-Enter for P&A
Intercept, Mill & Re-Enter for P&A
Casing-Stump Locate & Re-Entry P&A
Two-Well Fish Ranging & Re-Intersection
Parted-Casing Sidetrack Intercept & Mill-In
Damaged-Casing Stump Locate & Milling Re-Entry
Well Re-Entry & Milling, your questions, answered.
What makes a well hard to re-enter?
Collapsed casing, stuck packers, fish (lost tools), unrecorded sidetracks and high inclination can all block conventional re-entry. Ranging-guided outside-in milling provides a path back in when standard methods fail.
How does outside-in re-entry work?
Gunnar drills a new path, uses active ranging to contact the target casing precisely, then mills in from outside to re-establish communication, bypassing whatever is blocking the original bore.
Can you work in high-inclination wells?
Yes. Compact coiled-tubing systems like CTRWD™ are designed for high-inclination and motherbore exit/re-entry where standard rig and wireline operations struggle.
Is re-entry done under pressure?
Coiled-tubing deployment allows operations 'under pressure' with continuously present well-control barriers that aren't possible during conventional rig or wireline work.