Produced Water Filter | Produced Water Treatment | Filtra-Systems
The Chevron Midway Sunset facility processes produced water from the steam flood.
This produced water has to contain less than 1.0 ppm oil and less than 2.0 ppm suspended solids, prior to going to the steam generators.
The water flowing into the filtration units contains about 3.0 – 5.0 ppm oil and up to 5 ppm suspended solids, usually less than 1.0 micron in size. The produced water filters produce effluent water quality, consistently less than 1.0 ppm oil and 1.0 ppm suspended solids. Most times the oil concentration is undetectable.
This particular oil field has had a history of generating produced water with a “reverse emulsion”, meaning the oil droplets are small enough (< .2 micron) to remain in the water phase.
With the proper chemical addition, the STiR Nutshell Filters consistently produce water quality less than 0.5 ppm oil, and often at undetectable levels. The effluent from the produced water treatment filters flow through resin bed ion exchange softeners. The potential problem with water softening is oil fouling of the resin bed.
This is no longer a problem, or even a concern, due to using STiR technology. The testament of one of the senior operators was that “the effluent from these filters is as clean as he has seen in 35 years at this facility.”