Whipstock orientation,
casing exit,
slot recovery,
deep water,
drill ship




Egypt, Offshore


The customer wanted to access a hidden reservoir in a deep offshore field by shifting an existing well. A whipstock inside the existing casing was essential to start in the desired location. For instance, as the wellbore was close to upright, the action required an accurate means of determining the direction in the existence of magnetic interference. Drilling in this deep-water field was conducted from a drill ship. With high rig rental costs and longer trip times, the customer required an efficient solution for slot recovery.



Scientific Drilling’s gyroMWD technology positioned to the whipstock and ran into a depth of 2908m MD. At an inclination of 0.09 degrees, the gyroMWD tool provided accurate survey data. In addition to the gyro tool, face updates as the whipstock position. Once the direction confirmation, the setting of the whipstock and the customer successfully sidetracked the well, recovering the slot for increased production. 



By utilizing Scientific Drilling’s gyroMWD technology, the customer could save valuable rig time compared to running a wireline gyro. Furthermore, the customer benefited from eliminating additional personnel and equipment associated with wireline operations.


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