Research of Water Quality in Typical Low Permeability Oilfield Produced Water Treatment

Abstract:

It is significative to study sewage treatment process in low permeable oil fields. It could enhance the oil recovery. The water quality characteristics and oil/water separation characteristics were researched during different period process by GC-MS. It shows that there are about 108 kinds of organic matters, including 45 kinds of aliphatic hydrocarbon, 7 kinds of aine, 5 kinds of sulfocompound and 9 kinds of hexacyclic compounds, such as Benzene, phenol, naphthalene and anthracene. The percent of oil droplets which size was less than 10μm is 57.3%, compared to 91.6% which size was more than 50μm. It is difficult to separate the water and oil. The remaining oil was emulsified oil. The process was hard to decrease COD, and some pollutants were existed in water, such as Arsenic, Selenium, Mercury ,Cadmium and Cr⁶⁺. It is further proposed to optimize and develop this process to removal oil and suspended solids.

• Periodical: Applied Mechanics and Materials (Volumes 556-562)
• Pages: 867-871
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.556-562.867
• Online since: May 2014
• Authors: Qiu Shi Zhao*
• Keywords: Evaluation Process, Low Permeable Oil Fields, Oil Seperation, Produced Water, Water Quality Monitoring, Water Seperation

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