Lithologic Reservoirs >

2011 , Vol. 23 >Issue 2: 80 - 84

DOI: https://doi.org/10.3969/j.issn.1673-8926.2011.02.015

Using logging methods to calculate organic matter abundance of source rocks and its influencing factors

  • ZHANG Benjian ,
  • PEI Senqi ,
  • YIN Hong ,
  • YANG Yi
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  • 1. State Key Laboratory of Petroleum Resources and Prospecting， China University of Petroleum， Beijing 102249， China； 2. College of Geosciences, China University of Petroleum， Beijing 102249， China

Online published: 2011-04-20

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Abstract

In recent years, combining abundant geophysical information with geochemical experimental data to study source rocks can effectively overcome the weakness of poor continuity and high costs in conventional formation sample analysis, so it is widely applied. However, it is not found with high accuracy in the practical application. TakingWestern Sag in Liaohe Basin as an example, based on the geochemical and well logging data of source rocks in SG1 well, the log responses of source rocks with different maturity are contrasted. The factors influencing the accuracy of TOC calculation are discussed, and the least square method and ΔlgR method are compared. The result shows that the three constant in least square fitting formula contain various factors which can influence the calculation result. Therefore, the least square method could reflect the TOC changes in source rocks better and it is easy to be applied.

Key words： reservoir characteristics; main controlling factors; exploration direction; Lower Triassic Jialingjiang Formation; southwestern Sichuan Basin

Cite this article

ZHANG Benjian , PEI Senqi , YIN Hong , YANG Yi . Using logging methods to calculate organic matter abundance of source rocks and its influencing factors[J]. Lithologic Reservoirs, 2011 , 23(2) : 80 -84 . DOI: 10.3969/j.issn.1673-8926.2011.02.015

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