Comparison of Conventional Log Interpretation With Neutron Spectroscopy Log and X-Ray Diffraction Laboratory Analysis: A Case Study

The Elemental Capture Spectroscopy (ECS) log measures the<br>concentrations of a number of elements (Al, Ba, Ca, Cl, Cu,<br>Fe, Gd, H, K, Mg, Na, Ni, Si, S, and Ti) in the formation by<br>neutron capture spectroscopy. These are used to compute mass<br>fractions of certain components of the formation (clay, quartzfeldspar-<br>micas, coal and carbonate). This log was recorded in<br>a cored well of a large field in a deltaic environment with a<br>view to checking the routine interpretation model of triplecombo<br>logs.