PRODUCED WATER | |
Treatment requirements for either Injection or disposal can differ significantly. It is usually essential to exclude oxygen ingress to avoid corrosion, scaling or other chemical and biological changes within the system.
Separation by flotation or hydrocyclones is often employed for effective treatment, but some highly sensitive applications will require more specialised absorbent media or similar for very low residual oil content. Requirements for low residual suspended solids will demand the use of efficient filtration technologies appropriate to the fluid properties nature of the solids.
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AQUIFER WATER | |
Water sourced from underground aquifer reservoirs can usually be used for injection to maintain reservoir pressures, or provision of utility water for the facility, with minimal treatment depending on the suspended solids and water composition. It is essential to understand the degree of compatibility with reservoir fluids before injection to avoid the possibility of downhole scaling.
It is usually essential to exclude oxygen ingress to avoid corrosion, scaling or other chemical and biological changes within the system. Separation of solids using hydrocyclones or media filtration is sometimes necessary to achieve high quality injection specifications.
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RIVER WATER | |
River water is often the most complex to successfully treat for injection into the reservoir. High levels of both organic matter and solids particles of silt and sand often require several stages of treatment using strainers, hydrocyclones, filters and deaerators to render the fluid suitable for reinjection.
Environmental issues surrounding the use of process and system chemicals, together with the various reject streams that will be generated, are given careful analysis to ensure that the system is fully compliant with all appropriate regulations and that the environment is looked after.
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