Casing repair system enabled a novel solution
Schlumberger recommended its Casing Reconnect metal-to-metal, gas-tight casing repair
system. The 13 3/8-in casing was cut and dressed to ensure that the top of the casing was in
good condition. An appropriate length of casing was then run with a Casing Reconnect system
receptacle on the bottom, which was landed over the casing stump. For this size of casing, the
reconnection system was run using a slip-type casing hanger and spaced out without any issues.
The expansion tool was deployed to a predetermined depth, using a depth latch locator profile.
Subsequently, pressure was applied via hydraulic lines and controlled from surface to activate
the tool. As a result, the casing stump morphed into the receptacle, rejoining the two strings
with 14 metal-to-metal sealing points, exceptional axial load capability, and no loss of ID. The
connection is validated to ISO 14310 V0. After the morphing operation was complete, the new
13 3/8-in casing was cut at the surface wellhead position and connected to the BOP. The procedure
was repeated for the 9 5/8-in string.
Restoration of well integrity enabled production without drilling new wells
Both wells were restored, and completion strings with gas lift valves were installed without any
issues. They are now ready to commence production. This was the first use of the Casing Reconnect
system for well reentry to convert exploration wells into producers and avoid drilling new wells,
enabling SIPL to shorten the time to first hydrocarbons.