I may be wrong. When I read data on SLB there really is a strong story there. A lot stronger than CLH.
Oilfield Water Management
For many oil and gas production projects, the development of water sources for enhanced oil recovery; provision and recycling of frac water; and management, treatment, and disposal of produced water create a significant cost burden. Cost-effective techniques for managing oilfield water require a comprehensive understanding of reservoir characteristics, production volumes, hydrogeology, engineering design, and environmental considerations.
Schlumberger Water Services specializes in designing and managing projects to minimize the costs associated with oilfield water and to help clients comply with regulatory requirements. Expertise in oilfield services, combined with a team of Schlumberger water professionals and water-specific technologies, provide integrated project solutions for oilfield water that incorporate conveyance, pumping, treatment, and disposal.
Water Supply
Schlumberger Water Services specializes in development of water resources and provides the following services:
Recycle/reuse of frac flow backwater
Subsurface characterization
Well design
Siting and permitting
Conveyance design
Pump evaluation
Construction management
Water Treatment
Schlumberger Water Services has strategic agreements in place to provide many varieties of treatment, including:
Pre-treatment
Ionic exchange and adsorption
Membrane filtration
Thermal
My source tells me it's CLH and that person has never been wrong....never (with ESPH). But....we still need to look around to hedge a bit. Food for thought. An SLB relationship does create INSTANT celebrity.