System and Method for Measuring Downhole Parameters

A method for measuring downhole parameters of a wellsite, the wellsite having a wellbore extending into a subterranean formation, the method comprising:

• deploying the downhole tool into the wellbore, the downhole tool comprising:
• at least one source positionable about the downhole tool;
• at least one sensor electrode positionable about a front face of the downhole tool for measuring electrical signals from the at least one source;
• and
• a raised insulating cover positionable along the front face for defining at least one surface thereon to be in contact with a borehole wall, the raised insulating cover extending over at least a portion of the at least one sensor electrode whereby the at least one sensor electrode is positionable adjacent to the subterranean formation for electrically coupling thereto without direct contact therewith;
• positioning the at least one contact surface of the raised insulating cover adjacent a wall of the wellbore such that the at least one sensor electrode is positionable adjacent to the subterranean formation for electrically coupling thereto without direct contact therewith;
• passing an electrical signal through the subterranean formation via the at least one source;
• and
• measuring at least one downhole parameter of the formation from the electrical signal.