1214WAB® Provides Cross Flow Isolation to Negate SCP
WELL TYPETight gas producer
ENHANCED WELL CONSTRUCTION VIA WABReduces risk and provides life of well SCP barrier
WAB ROTATIONAL ABILITY ADDED VALUEThrough enhanced primary cementing operation
WAB TESTED & QUALIFIED TO PROVIDE V0 LINER BARRIERProvides V3 barrier isolation in the 12 ¼” section
Welltec Annular Barrier (WAB) set within the 12 ¼” open hole at approximately 1,500m.
Cement was pumped with partial losses during the operation, cement returns to surface were observed. The cement plug was bumped and pressure increased to 5,000 psi to expand WAB with a pressure hold at 5,000 psi.
Planned TOC 300m shallow of the WAB, within the 13 3/8” shoe
For this application, the expansion port shut off valve was further qualified to 7,500 psi V0 (leak criteria) and 11,000 psi V3 (leak criteria) at 150°C. This compares to their worst production load (tubing leaking gas to surface) delivering a Delta P of 6,000 psi across the casing wall.
WAB enables well construction barrier in challenging cost sensitive gas application.
Our ISO 14310 rated, steel expandable WAB® (Welltec Annular Barrier) is expanded between the base pipe and the casing or the borehole by applying pressure in the casing. It conforms to the actual well bore geometry.