Alternative Seawater and Brackish Water Intakes

Economical and reliable water supply for the desalination industry

To overcome treatment challenges (e.g., red tides), turbidity from storms, and contamination originating from open intakes, organizations are taking advantage of alternative seawater intakes (as water infiltrates into the seabed and flows toward the wells or galleries, natural filtration occurs). As less pretreatment of the water is typically required, alternative intakes have minimal environmental impacts and reduce overall costs compared to conventional intake systems.

To most efficiently and cost effectively obtain the target volume of water while also achieving water quality goals, Schlumberger integrates client requirements with detailed aquifer characterization and groundwater (solute-transport) modeling as part of the design-build services for the alternative intake system.

Contact us to discuss your project and explore your alternative seawater intake opportunities. To learn more about what we offer, continue reading below.

Brackish Groundwater Well Field Design and Construction

The key technical issue of the design of brackish and saline water well fields is obtaining the required raw water volume and being able to predict its quality for the design life of the desalination system. By applying detailed aquifer characterization, construction and testing of exploratory wells, and the performance of aquifer pumping tests, Schlumberger performs density dependent solute-transport modeling to simulate changes in aquifer water levels and salinity over time.

Concentrate-Disposal Injection Well Permitting, Design, and Construction

Injection wells are used in some locations for the disposal of desalination concentrate, particularly in inland areas where a surface water outfall is not possible. From the complex identification of a suitable injection reservoir through monitoring of the injection well, Schlumberger provides expertise in service, technology, and construction to ensure injection wells meet regulatory requirements and optimally perform throughout its performance life.

Offshore Outfall Modeling and Impact Analyses

The design and permitting of offshore outfalls often requires modeling of the mixing and movement of the discharged saline waters. Adequate mixing (dispersion) is important in preventing adverse impacts to benthic life near the outfall. It is also important to design outfalls so that the concentrate is not recycled back into the subsea intakes. Schlumberger has performed hydrodynamic modeling studies to evaluate seawater RO outfall and diffuser designs.

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