A Study on Wellsite Wastewater Reinjection Stratigraphic Control in Changqing Oilfield

Abstract:

Long Dong oil field located in the arid and semi-arid climate environment,as the oil extraction has been lasting for a long period,large amount of wellsite wastewater is produced without proper treatment and stored at the wellsite on long-term basis,which endangered the oil field environment.Focusing on the characteristic of Long Dong wellsite wastewater,conducting the experimental evaluation on treated wellsite wastewater reinjection based on the scaling prediction method,photo-extinction method and scale mass analysis.The evaluation process is standardized by scaling prediction,photo-extinction analysis and scale mass, meanwhile the removal effect of the key controlling factors like the medium particle size and SS of the treated water is detected as the research result shows.Wellsite wastewater treated by coagulation and filtration then supported by the advanced oxidation and membrane separation technology to intensify the size of tiny particles in wastewater.After the above process,the outflow may meet the "Recommended Clastic Rock Reservoir Water Injection Water Quality Index and Analysis Method "(SY/T5329-94 A1 standard) with good compatibility,and its ratio of treated water and reservoir water is 6:4 or8:2

• Periodical: Advanced Materials Research (Volumes 690-693)
• Pages: 1095-1100
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.690-693.1095
• Online since: May 2013
• Authors: Rong Chen, Zhi Wei Lei, Dong He, Peng Kang Jin
• Keywords: Compatibility, Reinjection, Scaling Prediction, Wellsite Wastewater

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