石油与天然气地质 ›› 1981, Vol. 2 ›› Issue (2): 104-113.doi: 10.11743/ogg19810202

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油气定量预测方法的探讨

杨文宽   

  1. 地质部第五石油普查勘探指挥部
  • 出版日期:1981-06-25 发布日期:2012-01-16

A DISCUSSION ON THE METHOD FOR QUANTITATIVE PREDICTION OF OIL AND GAS

Yang Wenkuan   

  1. The 5th Headquarters of Petroleum Prospecting and Exprolation, Ministry of Geology
  • Online:1981-06-25 Published:2012-01-16

摘要:

本文试图就石油与天然气定量预测问题(包括干酪根成熟度的定量估计、干酪根演化史的恢复、成熟带上下限的估定、油气初次运移量的估算、沥青生成量的估算、源岩综合评价等内容)提出一种解决方法.

Abstract:

As major component of kerogen,the carbon according to its distribu-tion during revolution can be divided into potential carbon(B0)which trans-forms gradually into the molecules of bitumen,and nonpotential carbon(N)which is impossible to have such a change.With the increasement of theburied time and depth the residual rate of carbon decreased gradually.In addition,the potential carbon so called may be subdivided into trans-formed carbon(included the released carbon M from source rock,residualoil and gas and chloroform-extracted bitumen A of source rock)and has notyet transformed carbon(B).B/B0-α,which is named the residual carbonicrate of potential carbon in kerogen.A further study of α may obtain ratheraccurate imformations during the kerogen revolution.According to the kerogen thermo-degradation of oil and gas geneticaltheory and the basic principle of chemical kinetics,the author has deducedthe residual carbonic rate of potential carbon and other mathematic formulae.Apply these formulae and the data of the abundance of total organiccarbon and disseminated bitumen,it is possible to solve some questions rela-ted to quantitative oil and gas prediction,such as the quantitative estima-tion of maturity of kerogen,the reconstruction of the evolutionary processof kerogen,the confinement of the upper and lower limits for mature zones,the estimation of the amounts of bitumen generated,the calculation of theprimary amounts of oil and gas,and the comprehensive assessment of thesource rocks.This method can be applied to various sedimentary rocks,includingcoal-bearing strata and“red bads”