The Valdemar field contains a target reservoir that is a Lower Cretaceous “dirty chalk” containing up to 25% insoluble fines, porosity greater than 20%, and permeability below 0.5 md. Stimulations on several wells showed suboptimal production rates, which led to the conclusion that the Lower Cretaceous was not economically producible. An intensive study was therefore carried out to evaluate all aspects of the fracture design and implementation. This paper focuses on the aspects of proppant selection and adequate fracture-conductivity placement, with the goal of improving well productivity and cumulative recovery.
Completion Optimization
The Valdemar field is located in the Danish sector of the North Sea.
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