The Distribution Characteristics Analysis of Pollutant Atrazine in the Petrolic Drilling Fluids

Abstract:

In view of the present situation that a lot of waste drilling fluids pollute soil and water in the process of petroleum exploration and development, choosing the drilling fluids in 5 well fields which are in the North area of ChangQing oilfield to carry on the pollution characteristic analysis. 35 physicochemical indexs and contamination indexs had been determined in the drilling fluids, its result is: the waste drilling fluids are ropiness colloid, paste, viscosity high. The drilling fluids ingredient is clay, polyacrylamide (PAM), carboxymethylcellulose (CMC). COD_Cr, mineral oils, NH₄⁺, Cr, Cd, Pb, As, pH, chromaticity and so on exceed standard in the drilling fluids, Zn exceeds standard in some individual well fields, the other over-standard parameterssuperstandard multiple is not big except COD_Cr, mineral oils which exceed standard siriously. COD_Cr, mineral oils, NH₄⁺ and so on are from formation petroleum and the additives such as polyacrylamide (PAM), carboxymethylcellulose (CMC).etc, high pH is related to calcined soda or caustic soda, Cr, Cd, Pb, As, Zn and so on are from the sidewall material which is cattied by the circulating mud, which are related to formation lithological composition.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 1977-1980
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.1977
• Online since: August 2013
• Authors: Yan Hua Wang, Sheng Ke Yang, Chan Juan Gao, Miao Miao Zheng
• Keywords: Chemical Oxygen Demand (COD), Distribution Characteristics Analysis of Pollutant Atrazine, Drilling Fluids, Heavy Metal, Petroleum

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