Drilling & Evaluation
Deepwater drilling presents many challenges associated with difficult logistics, water depth, complex geology and the high operating cost. On deepwater projects, drillers must deal with long risers, shallow gas and water zones, reactive shales, salt layers, hydrostatic pressures near the fracture gradient, and the need for precise well placement in complex reservoirs. Similarly, formation evaluation is complicated by the need for high quality and comprehensive data, the often hostile downhole environment, and the difficulty in deploying wireline instruments in wells that extend beyond 30,000 ft below the rig.
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Completion & Production
On high-cost deepwater projects, oil companies need to complete their wells quickly and without Non-Productive Time. Once on line, fields need to produce at economic rates while assuring maximum ultimate recovery. Completion and production systems must be extremely reliable, adapt to changing reservoir conditions, and require minimal intervention. And in the deepwater environment, which is prone to formation of hydrates, asphaltenes and other deposition, production systems need technology to keep oil and gas flowing.
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