Wireline shifting BHA enables operator to reduce operation costs and benefit from flexibility of closeable sliding sleeves
Working in an offshore environment brings a unique set of challenges compared to onshore operations. Due to uncertainties in long-term reservoir production, lower completion solutions are often required to allow an operator to selectively produce, stimulate or isolate certain sections of the formation. This is typically achieved using sliding sleeves that can be shifted using coiled tubing.
An operator working in the Scottish North Sea, near the Shetland Islands, was looking to push the technical limits of what has previously been undertaken in the field since oil was first discovered more than 40 years ago.
The Clair field sits below water depths up to 140 m and the target is an oil rich sandstone layer that is approximately 500 m thick at a total depth of 1850 m. Due to the constraints of both limited space and cost of having a coiled tubing unit on the platform during the offshore operations, the operator wanted a solution that allowed for shifting using using e-line in place of coiled tubing.