With the downturn fresh in mind, oil and gas operators are challenging the market to come up with innovative low-cost solutions to increase recovery and improve their margins. This is particularly important in mature areas like the North Sea. Water injection is a common way of increasing recovery from reservoirs. Moving water injection subsea provides a cost-efficient solution and ensures safe operation, making field development economically viable. Utilizing the seabed to treat and energize surrounding seawater provides the long sought-after flexibility for both Brown- and Greenfields. Two oil service majors have joined forces and developed a complete water treatment and injection package solution based on Seabox™ and LiquidBooster™ technologies. With significantly reduced topside scope and utilizing standardized products, it is a cost-efficient solution to provide high-quality water to subsea wells for reservoir pressure support. One important aspect of the solution is that the sea water treatment and injection process is moved subsea, reducing the need for topside modification, which makes it easier to control cost, reduce the overall uncertainties and provide significant value creation to a field development. The water injection strategy can be decoupled from the host and provides a flexible approach to phase in water injection capacity when and where required, based on reservoir dynamics and/or synergies between a cluster of nearby fields.

This presentation will give an introduction to a subsea sea water injection application, the associated benefits by moving this technology subsea and the advantageous synergies of a joint integration approach.