Logging wells on the Central North Sea Armada platform involved an innovative intervention mast that minimized the time to switch from coiled tubing to wireline logging. The Armada platform, operated by BG International, currently produces 450 MMscfd of gas.
The mast, designed by the PSL Group, Aberdeen, is a self-contained and self-supporting unit that can be placed in confined areas. The unit requires limited support from platform cranes and allows good maneuverability and positioning of the coiled-tubing injector, BG says. PSL's coiled tubing is capable of handling both real time and memory logging tools.
BG logged five long-reach wells with up to 75° deviation and 23,000-ft measured depth. It required the log data to improve its reservoir model, identify infill drilling targets, and optimize production performance.