Dissertation
Dissertation > Industrial Technology > Oil and gas industry > Oil and gas development and mining > Production Engineering > Enhanced oil recovery and maintain reservoir pressure (secondary and tertiary oil recovery ) > Thermal, miscible , Chemical Oil Recovery (EOR EOR )

Characteristic Analysis and Prevention Measures Research of Reducing Substances in the Injection System of Polymer Flooding

Author WangHuan
Tutor ZhangJiHongï¼›ZhangDong
School Northeast University of Petroleum
Course Petroleum and Natural Gas
Keywords Polymer flooding Injection system Reducing substances Antiseptic
CLC TE357.4
Type Master's thesis
Year 2010
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Polymer solution flooding technology is an enhanced oil recovery techniques more mature , with the polymer flooding technology industry promotion , many of the technical issues and technical problems will therefore result . Found in the regular cleaning of polymer injection pump , there is a \bring a difficulty , to this end , to carry out the analysis and prevention measures of the physical characteristics of polymer flooding injection system restore , to improve the performance of the injection of the polymer solution . Polymer flooding within the injection system of the morphology and composition of the reducing substance is analyzed to determine the reducing substance is mainly composed of three kinds of substances , ie a substance is an organic substance , as a polyacrylamide, and the second substance is an inorganic substance , as iron, magnesium , calcium ion , a third substance in sulfate-reducing bacteria, iron bacteria , mainly fungi and metabolites . Yellowish brown viscous reducing substances formation mechanism , there is a range of system impact study found that reducing substances present in the polymer injection pump filter , when the polymer mother liquor to carry large amounts of sulfate -reducing bacteria to enter the filter , the result of channel filter becomes small , the flow rate slows , and thus adequate contact with the metal material of the filter , to produce large amounts of reducing substances . Inhibition reducing substances forming method to optimize the sterilization program , made ??good bactericidal effect , reducing the formation of reducing substances , to ensure the normal operation of the injection system . Will have a better understanding of the results of this study , and comprehensively improve the level of development of polymer flooding technology management to provide a reliable basis , with higher economic benefits .

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