GEOCHEMICAL SURVEY OF NATURAL GAS PRODUCTION FROM LOW-PERMEABILITY GAS FIELDS Application RU-2493366-C2 Russian Federation 20 Sep 2013
Geochemical surveillance of gas production from tight gas fields Grant US-8505375-B2 United States of America 13 Aug 2013
Geochemical surveillance of gas production from tight gas fields Application EP-2116690-A1 European Patent Office 11 Nov 2009