534WAB® facilitates high pressure zonal isolation
Successful isolation: high pressure open hole zoneSealing capability of the WAB vs swellable packer
34% incremental hydrocarbon productionProvides client with a higher NPV
Enhanced well construction reduces riskWelltec’s solution provided proper zonal isolation
Strong operational job planning and executionEnsure WAB placement scenarios were catered for
2 x 534WAB10:10.2 were incorporated in the 4 ½” liner in a cementless completion to isolate the “Los Cuervos” shale in the “Pauto Main” formation. Bottom WAB was RIH successfully to depth below “Los Cuervos” zone (Pauto Main) @ 18,378.87ft. Top WAB was RIH successfully to depth above “Los Cuervos” zone (Pauto Main) @ 18,138.59ft. Both WABs were expanded successfully with 5,000 psi applied from surface against seated ball.
Welltec designed an effective compensation and equalization valve system of both high pressure from “Los Cuervos” shale of “Pauto Main” and the high pressure stimulation pressure inside the liner.
WAB allowed the “Mirador” Sandstones in the “Pauto Main” and “Pauto Splay” formations to be perforated and effectively isolated and stimulated. Due to the OH completion and more contact area, the client saw an increase in their estimated production from previous wells where cement was used.
WAB high pressure effective open hole zone isolation gains incremental production by 34% from originally expected.
Our ISO 14310 rated, metal expandable WAB (Welltec Annular Barrier) for open hole zonal isolation, facilitates the ability to deploy ‘cementless’ extended reach, multi zone, horizontal, lower completions.