Patent ID: 8556001
Filing Date: 2013-10-15
Classification: E21B,G01N

Abstract:
1. A process for determining the presence and/or quantity of H2S in drilled subsoil layer debris, comprising the following working steps: a) drilling a layer of subsoil and recovering of drilling debris of said layer; b) degassing the drilling debris from step a) in a watertight environment, and separating a gaseous phase from said debris; c) clearing the gas released in step b) and conveying the gas towards an H2S detector; d) detecting the possible presence and/or quantity of H2S in the gaseous phase from steps b) and c) by means of said detector; and e) determining an H2S distribution profile in the subsoil by repeating the steps a), b), c) and d) on one or more samples from the subsoil layers at different levels of depth in relation to the surface.