Abstract

At present, most oilfields in our country has entered the mid-late development, water-flooding technology is widely accepted, multi-layer hybrid mining and multi-layer hybrid conveying process. If no compatibility between injected water and formation water or different horizon produced water is poor, it can form various types of oil field scale.Scale reservoir caused by congestion, not only can bring damage to reservoir, also can give bring different degree of corrosion of equipment and pipeline, reduce the heat transfer rate of equipment and pipeline. The scale formation, fouling hazards, scaling trend prediction and antiscale technology in oilfield produced water are introduced. It as the basis of the theory of compatibility experiments has a certain realistic guiding significance in mixed mining, mixed transportation and reinjection process.

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