Gravel Pack Evaluation Tool : Uses porosity, density and/or tracer tools to determine presence of gravel and placement of gravel type between the screen and the hole or casing
George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}