Case Study Gas-tight Reconnection to Surface Enables Reentry into Abandoned Exploration Wells and Avoids Redrilling
Novel use of Casing Reconnect system cost-efficiently converts two plugged and abandoned wells into producers.
Casing Reconnect
Metal-to-metal, gas-tight casing repair system
Overview
Casing Reconnect metal-to-metal, gas-tight casing repair system with a cutaway view of the receptacle.
Casing Reconnect
Metal-to-metal, gas-tight casing repair system
Applications
- Cut and pull stuck casing above the stuck point and reconnect to the casing stub
- Reestablish the integrity of corroded, collapsed, or leaking casing that cannot be repaired by an expandable steel patch
- Efficiently replace or repair the casing hanger, wellhead, or both
- Reinstate exploration, temporarily plugged and abandoned, or previously decommissioned wells
- Connect subsea wellheads to surface
- Onshore, offshore, and subsea wells
Benefits
- Keeps drilling programs on schedule by eliminating the need for lengthy fishing operations or costly sidetracks
- Provides robust seal for the life of the well
- Allows fullbore access after installation
Features
- Metal-to-metal, nonelastomeric, gas-tight sealing and anchoring technology
- ISO 14310 V0 rated
- No limits on installation depth
- Compliant with NACE MR0175 for sour service
Case Studies
Case Study
Gas-tight Reconnection to Surface Enables Reentry into Abandoned Exploration Wells and Avoids Redrilling
Case Study
North Sea Operator Avoids Sidetrack by Replacing Leaking Liner Hanger
Case Study
Eni Saves 3 Months of Rig Time By Avoiding Sidetrack
Case Study
Casing and Hanger Repair Enabled by Gas-Tight Reconnection to Surface Averts Sidetrack
FAQs
How does it work?
During the life cycle of the well, the wellhead or casing may be damaged or deemed no longer suitable for the well design. Alternatively, during drilling operations, the casing may become stuck at a point close enough to the intended landing depth to remain viable. In these situations, using the Casing Reconnect system enables cutting the casing anywhere between the wellhead and the top of cement or stuck point and subequently pulling it out. Replacement casing is then run with a Casing Reconnect system receptacle on the bottom—correctly spaced out with the casing hanger. The casing stump is morphed into the receptacle to rejoin the two strings with a high-axial-load-bearing, metal-to-metal seal. The system accommodates excess swallow at the connection, greatly simplifying space-out for correctly landing the hanger.