Produced Water Treatment for Re-injection into Tight Reservoir

Produced Water Treatment for Re-injection into Tight Reservoir

Produced Water Treatment for Re-injection into Tight Reservoir

The technique, including a new Dissolved Air Flotation (DAF) System, fine filtration, new membrane treatment and other physical and chemical methods, can remove oil particles and suspended solids. Each unit could be of modular design for different water quality treatment.

Produced Water Treatment for Re-injection into Tight Reservoir

Produced Water Treatment for Re-use/Re-injection into Tight Reservoir

Until now, 60%-70% of the ever explored oilfields in the world are defined as low permeability oilfields, and termed as tight reservoir. Consequently, the reinjected produced water quality is required to meet more stringent standards level, to ensure improvement in the oil recovery ratio. To address the emerging requirement, Haimo has developed the produced water treatment technology and specialized equipment for re-use /re-injection into tight reservoir, and the final treated water quality can meet the 0.01μm2 average air permeability standard of SY/T5329-2012.

Produced Water Treatment for Re-use/Re-injection into Tight Reservoir

Produced Water Treatment for Re-use/Re-injection into Tight Reservoir

Produced Water Treatment for Re-use Re-injection into Tight Reservoir flow chart

The wastewater containing oil firstly passes through the CPI unit to remove slick oil; then in the DAF unit, the emulsified oil will be largely reduced; and then finally through the CMUF unit, most of SS and oil content of wastewater will be cleaned up to meet the 0.01μ m2 average air permeability standard of SY/T5329-2012.

The effluent can meet (SY/T5329-2012):

  • SS Concentration<1mg/l;

  • SS Particle Diameter Median<1µm;

  • Effluent Oil Concentration<1mg/l.


  • High flexibility - the treatment can handle projects with variable flow rate and quality.

  • Good treatment performance on the oily sewage of highly concentrated emulsions.

  • Automation - compact, highly automated, integrated, less people dependent.

  • Installation - skid-mounted plant.

  • Low cost.

Designed water-rate( m³/d):
Reinjection Depth(m):
Reinjection stratum permeability(×10-³μm2):
Incoming water specification(mg/L):

Oil:

SS:

pH:

TDS:

SiO2:

Temperature: °C

Effluent Water Requirement(mg/L):

SS: mg/L;

Oil: mg/L;

DO: mg/L;

Particle Diameter: μm;

IB: /mL;

TGB: /mL;

SRB: /mL;

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