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Logging Evaluation Method and its Application for Measuring the Total Organic Carbon Content in Shale

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Abstract:

The acquisition of the total organic carbon (TOC) content mainly relies on the geochemical analysis and logging data. Due to geochemical analysis is restricted by coring and experimental analysis, so it is difficult to get the continuous TOC data. Logging evaluation method for measuring TOC is very important for shale gas exploration. This paper presents a logging evaluation method that the shale is segmented according to sedimentary structures. Sedimentary structures were recognized by core, thin section and scanning electron microscope. Taking Wufeng-Longmaxi Formation, Silurian, Muai Syncline Belt, south of Sichuan Basin as research object, the shale is divided into three kinds: massive mudstone, unobvious laminated mudstone, and laminated mudstone. TOC within each mudstone are calculated using GR, resistivity and AC logging data, and an ideal result is achieved. This method is more efficient, faster and the vertical resolution is higher than △logR method.

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Periodical:

Advanced Materials Research (Volumes 962-965)

Pages:

51-54

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.962-965.51

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Online since:

June 2014

Authors:

Zhi Feng Wang*, Yuan Fu Zhang, Hai Bo Zhang, Qing Zhai Meng

Keywords:

Logging Data, Sedimentary Structures, Segmentation Fitting, TOC

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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