The stacked sands of the South Tapti field have presented completion challenges from field start-up in 1997 to the present-day. A large part of these challenges have been caused by reactive shales interbedding the sand bodies. This has had a persistent influence on the sandface completion design and, in particular, on the drilling and completion fluid systems.

The completion design has evolved from stacked cased hole gravel pack to open hole gravel pack designs. Non-gravel pack open hole designs are also being considered for the future to meet the challenges of drilling and completion at higher well angle. The field requires a mix of all these techniques to meet well objectives.

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