Notional Field Development Final Report - EBN

EBN Notional Field Development Plan
The treatment options can differ in their inherent capability, setup facility requirements, capital costs,
operating expense, and waste (sludge and brine concentrate) streams; all these factors can be important
to the gas Operator.
Some treatment technologies may have large space requirements that may not be possible in some gas
well installations. Some technologies may be commercially available as small, skid-mounted mobile easy
to move around units that easily can be relocated as production conditions change. Equipment costs
are important in some installations where a large amount of dedicated equipment must be purchased
for managing flowback and produced water.
This section below describes various produced water technologies along with examples of how they are
being implemented in the field.
Bag Filtration – Bag filters are currently being used by Operators for removal of TSS from flowback and
produced water before recycle. Spent filtrations bags are being disposed of at permitted landfills.
Figure 4-19. Removal of total suspended solids (TSS)
Physical/Chemical Separation – Some Operators are adding chemical reagents to react with dissolved
heavy metals (Fe and Mg) to form insoluble hydroxide-based precipitates that can be removed with
other suspended solids from the wastewater stream using clarification and/or filtration. Also the
addition of other chemical reagents to react with barium and strontium to form sulfate-based
precipitates that can be removed with other suspended solids from the wastewater stream using
clarification and/or filtration.
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