Access New Reservoirs North Sea, Norwegian Sector Challenge Isolate a reactive green clay section and preserve hole size in build and horizontal hole sections while sidetracking an abandoned well to access a new reservoir section. Objective Install a SET® Openhole solid expandable system fitted with injection-moulded composite standoff blades. Results Preserving hole size was important to enable optimal reservoir access with 6-5/8 in. sand screens. Challenges in getting the liner to planned depth included the reactive green clay which made hole conditions time-dependent and the loss zones prior to a fault feature which created a high risk of differential sticking. In order to reduce the risk of differential sticking and ensure low-side cementation in the hor

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