Laboratory facility to simulate self-potential fields in geophysical well-logging

• Grant number: 06/06956-5
• Support Opportunities: Regular Research Grants
• Start date: February 01, 2007
• End date: January 31, 2009
• Field of knowledge: Physical Sciences and Mathematics - Geosciences - Geophysics
• Principal Investigator: Carlos Alberto Mendonça
• Grantee: Carlos Alberto Mendonça
• Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

This project presents a procedure to separate sources of self-potential fields measured in geophysical well-logging, for oil, gas, and groundwater exploration. Initially we develop a feasibility study showing that source fields can be separated by varying salt concentration of the perforation mud and repeating SP measurements. Since feasibility analysis was favorable, we are planing to test this methodology in a laboratory facility simulating the wellbore. This study may delineate a process to determine the hydraulic permeability and water concentration from conventional geophysical logs (SP, flowmeter, and resistivity) , which may find interest in oil and groundwater industries (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MENDONCA, CARLOS A.; DOTTI, GLAUCIA C.; MAIDA, CAMILA; SILVA, NILTON. Tank experiments with borehole self-potential data. GEOPHYSICS, v. 77, n. 1, p. D1-D6, JAN-FEB 2012. (06/06956-5)