Xinjiang Petroleum Geology ›› 2004, Vol. 25 ›› Issue (3): 264-266.

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Critical Point Analysis of Hydrocarbon Recovering Coefficients

WU Xin-song1,2, HAN De-xin1, ZHANG Xiang-zhong1   

  1. 1. China University of Mining Technology, Beijing 100083, China;
    2. University of Petroleum, Beijing 102249, China
  • Received:2003-07-28 Published:2020-09-18

Abstract: How to accurately recover the losing hydrocarbon by pyrolysis geochemistry logging is a crucial step for reservoir fluid-produc-ing evaluation. It is very difficult to determine the recovering coefficients due to lack or less integrity of data in real core analysis. Fordealing with this problem, a new method called critical point analysis is proposed in this paper. It can be used to find the critical point bydrawing the scatter plot of hydrocarbon composition content versus the ratio of the light/ weight hydrocarbon composition contents, andthen to calculate the recovering coefficient by contrasting the py rolysis parameters of critical point for different types of fluid samples.This method can be not only explained reasonably in terms of theory, but also be reliable for practical application.

Key words: geochemistry, mud logging, hydrocarbon composition, critical point, analysis

CLC Number: