SINOKLE Technology: Efficient Purification Process for Oilfield Produced Water Reinjection
Oilfield produced water poses a series of challenges, including high salinity, high oil content, complex composition and large flow fluctuations, so a scientific, efficient and stable advanced treatment process is essential if the water is to meet increasingly strict environmental regulations and the specific requirements of reinjection or reuse.
The advanced treatment process promoted by SINOKLE is built around CDFU (cyclonic dissolved gas flotation unit), KFM active filter media filter and modified inorganic membrane filter as its core technical units. The process can be configured flexibly: equipment combinations and flow schemes are tailored to the target water quality standard (such as oilfield reinjection specifications) and the specific application, ensuring treated produced water consistently meets the required standard.
Produced water reinjection treatment process
The process offers the following clear technical advantages:
Wide applicability: it suits not only conventional oily wastewater but also special oily water such as low-polymer produced water, showing excellent adaptability to different operating conditions.
High efficiency, low sludge production: high-efficiency dissolved gas flotation replaces the traditional gravity settling tank, using micro-bubbles for physical demulsification and oil-water separation. Separation efficiency rises sharply while oily sludge generation falls markedly, easing the burden on downstream sludge disposal.
Compact system, fast treatment: the overall flow is compact and well arranged, the equipment footprint is small, hydraulic retention time is short and treatment is fast, saving both space and time.
Intelligent, modular design: core treatment units use skid-mounted modules that are easy to transport, install and commission. Integrated intelligent control enables automatic operation and remote monitoring, reducing dependence on operators and cutting operation and maintenance costs.
Stable operation, strong shock resistance: the system tolerates large swings in water quality and flow, and keeps effluent reliably within limits even when influent conditions change, providing solid technical support for continuous, environmentally compliant oilfield production.
Case study: produced water treatment at an oilfield in Shaanxi
This high-efficiency process has been applied successfully in many projects. It performed outstandingly, for example, in a produced water treatment project at an oilfield in Shaanxi, confirming the reliability and cost-effectiveness of the technology and providing a solid technical solution for water resource protection and sustainable development in oilfields.
