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Application of Cross-Plotting Techniques for Delineation of Coal and Non-Coal Litho-Units from Well Logs

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DOI: 10.4236/gm.2012.24014    6,060 Downloads   11,012 Views   Citations

ABSTRACT

Well log responses can be used to delineate coal and carbonaceous shale from other non-potential litho-units by cross-plotting technique. The cross-plotting between gamma ray and density had been carried out for 15 wells of Jharia coalfield, India. Through these different cross-plots across the study area, different litho-units like; coal, shaly coal, carbonaceous shale, shale, sand/sandstone, shaly sand, jhama and igneous intrusion (mica peridotite) have been identified. Clustering of points for different lithologies in the above cross-plots indicate that the different trends with marginal overlap between carbonaceous shale/shaly coal and shale as well as shaly sand and shale. The coal horizons are mostly overlain and underlain by shale or sandstone. Cross-plot analysis indicates the various coal lithologies which will play important role in CBM exploration and exploitation strategy.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

R. Chatterjee and S. Paul, "Application of Cross-Plotting Techniques for Delineation of Coal and Non-Coal Litho-Units from Well Logs," Geomaterials, Vol. 2 No. 4, 2012, pp. 94-104. doi: 10.4236/gm.2012.24014.

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