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Article Navigation >  PETROLEUM GEOLOGY & EXPERIMENT  > 2010  >  32(2): 196-200
Zhao Chunhua, Wang Jibao, Zhu Yangming. THE CALCULATION METHOD FOR THE CONTRIBUTION RATE OF THE BIODEGRADED MIXED-SOURCE OILS[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2010, 32(2): 196-200. doi: 10.11781/sysydz201002196
Citation: Zhao Chunhua, Wang Jibao, Zhu Yangming. THE CALCULATION METHOD FOR THE CONTRIBUTION RATE OF THE BIODEGRADED MIXED-SOURCE OILS[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2010, 32(2): 196-200. doi: 10.11781/sysydz201002196
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THE CALCULATION METHOD FOR THE CONTRIBUTION RATE OF THE BIODEGRADED MIXED-SOURCE OILS

doi: 10.11781/sysydz201002196

  • Department of Earth Sciences, Zhejiang University, Hangzhou, Zhejiang 310027, China

  • Received Date: 2009-07-14
  • Rev Recd Date: 2010-02-07
  • Publish Date: 2010-04-28
    Abstract
  • The mathematical models of biodegraded mixed-source oils' biomarkers change along with the mixed proportion,and the calculation method for the contribution rate of oil sources were established by mathematical demonstration and artificial oil-mixing experiment,and in addition,the effect of biodegradation on the mixed proportion is illustrated.The research indicated: when the biomarkers content is used as a parameter,if we use normal crude oils or less biodegraded crude oils as end-member oils,instead of the biodegraded mixed-source oils,we will overestimate the contribution rate of the high biomarkers content crude oil,otherwise,we will underestimate the contribution rate of the high biomarkers content crude oil,so we should use considerable extent of biodegraded oils to calculate.When the biomarkers ratio is used as a parameter,as to biodegraded mixed-source oils in the same degree,biodegradation will have no effect on the mixed proportion,and we can use normal crude oils as end-member oils.However,the situation will appear more complicated if we use normal crude oils rather than biodegraded end-member oils in varying degrees,the contribution rate of crude oils of the high biomarkers ratio will be overestimated or underestimated.In this case,we should use the corresponding degree of biodegraded crude oils as end-member oils to calculate.

     

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