1214WAB® providing a SAP barrier and foundation for P&A cement plugs
WCS PRODUCTS1214WAB, 812WAB & 6WAB
V0 1214WAB WITHIN 13 3/8” CASINGEnabled client to verify B annulus barrier
RAPID SET V0 WAB LH'S ADDED VALUEVia no requirement for set down weight to seal
EXTENSIVE WAB PORTFOLIO ENABLEDExtended reservoir contact via 6WAB range
CAPEX EFFECTIVE P&AUsing V0 1214WAB as base for reduced risk P&A
Challenging cement operations in the 12 ¼” hole due to potential weak formations and high ECD based the rational for the placement of the 1214WAB within the 13 3/8". Once set, the 1214WAB was then tested via applying pressure to the B annulus to FIT + 70 bar confirm Welltec Annular Barrier® (WAB) sealing and providing barrier verification.
The WAB was positioned close to the 13 3/8” shoe, to form part of the barrier envelope.
Exposed formations below the 13 3/8” csg shoe increased the risk of gas migrating and resulting in a gas below well head causes problems during PP&A. IS0 14310 V0 leak rate qualification of the WAB permitted installation without dispensation from the authorities. Next step was to drill out across the reservoir section to 8 1/2" open hole.
Primary & Contingency Liner
All pressure was then bleed off the pressure and verification that the WAB LH is set via pull/slacking off weight on the liner top. The remainder of the reservoir section was then drilled out to 6" and a 6WAB LH was deployed with a 4 1/2" cement-less liner, as above.
Plug & Abandonment
1. Ensuring no SAP within the B annulus and as a base
2. As a future base for cement during well abandonment
After a successful well test, a bridge plug was installed inside the 9 5/8” casing just below the WAB depth.
The 9 5/8” casing was then cut and the bridge plug and WAB were tested to 70 bar above 13 3/8” LOT.
Cement was pumped to provide the necessary seal integrity to met the regulatory requirements for well abandonment.
Reduced complexity, gas tight, rapid set horizontal liner hangers for both primary and contingency liners.
CAPEX effective, reduced risk P&A operations.
Enhanced well integrity and extended reservoir contact via IS0 14310 V0 rated WAB portfolio.
Our WAB® for Well Abandonment range, when incorporated within a cased or open hole across the cap rock will provide significant future value as the foundation for critical placement of P&A cement plug.