The liner with the WAB installed was run without rotation the majority of the length and then rotated down the remaining 2,000 ft at between 30 RPM and 40 RPM The liner hanger was set and then the liner hanger running tool was released and retrieved. To expand the WAB within this non-pressure tight liner the Welltec® Multi-set Injection Tool (WMIT™) was utilized.
The WMIT™ straddles the solid liner section onto which the WAB is located and using surface pump control, applies the required expansion pressure locally to the straddled region. Multiple sets and re sets can be accomplished in the same run enabling multiple WAB’s to be expanded within non-pressure tight liners.
The WMIT™ was run on DP, depth correlated and using the rig pumps, the pressure was increased in steps over a 20 min time window to the final expansion pressure of 4,750psi. This pressure successfully expanded the WAB, providing the required zonal isolation at this depth.
This was the first deployment of the WMIT™ to expand the WAB within a non-pressure tight liner. On this operation the WAB endured sustained rotation in an extended reach, horizontal well without impacting the operational or sealing capability to the open hole.
The operator successfully completed the objectives for this well, using the capabilities of the WAB to overcome an extensive list of technical and operational specifications to successfully accomplish those objectives. A number of subsequent deployments have since been conducted in other geographical locations since their successful demonstration of the WAB’s capabilities.