Case Study

Produced Water: Marcellus Shale

Oasys Water’s ClearFlo MBC system treated highly variable produced water from the Marcellus Shale.

Water from hydraulic fracturing operations in Pennsylvania’s Marcellus Shale present a complex water treatment challenge. The large volumes of frac flowback and produced water from natural gas extractions contain high concentrations of total dissolved solids (TDS), including high mineral hardness, and require prohibitively expensive treatment or disposal. Oasys offered a much more cost-effective solution, and completed a comprehensive four-month test of the ClearFlo MBC system, successfully treating 1,430 barrels (60,000 gallons) of high salinity, high hardness produced water from the Marcellus Shale.

  • Feed water: Typical of oil field waste, the raw water had greatly variable salinities and other constituents. The average salinity of the raw water was 73,000 parts per million of total dissolved solids (ppm TDS), roughly 10% higher than RO brine. Boron was measured at concentrations that exceeded safe limits for drinking water and agriculture applications.
  • Results: The Oasys MBC system consistently produced water that meets EPA drinking water standards (below 500 ppm TDS) and achieved a brine concentration over 200,000 ppm TDS.
  • Economics: The total cost to treat the water, including pretreatment and energy costs, was more than 35% lower than mechanical vapor recompression.

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Energy Savings: With lower energy consumption than competitive technology, the ClearFlo MBC offers a cost-effective solution for the produced waters found in oil and gas production.

Email us to learn more about our work in the Marcellus Shale or to request the full Oil & Gas case study.