Abstract: An imaging device included in an assembly located in a wellbore during drilling operations may include a cylindrical housing that extends along a central axis thereof. The imaging device may include at least one gradient coil configured to produce a unique magnetic field weaker than a main magnetic field. The at least one gradient coil may create a variable field that is increased or decreased by changing a direction of the unique magnetic field with respect to a direction of the main magnetic field to allow a specific part of a rock formation to be scanned by altering and adjusting the main magnetic field. The imaging device may include at least one radio frequency coil configured to transmit radio frequency waves into the rock formation. The imaging device may include at least one magnet disposed in the cylindrical housing that resonates against the unique magnetic field.

Abstract: A downhole investigation tool for a borehole is disclosed. The downhole investigation tool includes a number of ultrasonic probes configured to generate an ultrasonic image of a forward portion of the borehole ahead of the downhole investigation tool and a rear/side portion of the borehole behind or beside the downhole investigation tool, at least one magneto-vision probe configured to generate a magneto-vision image of the forward portion and the rear/side portion of the borehole, and a mechanical attachment configured to attach the downhole investigation tool to a wireline or a steel pipe in the borehole.

Abstract: A downhole investigation tool for a borehole is disclosed. The downhole investigation tool includes a number of ultrasonic probes configured to generate an ultrasonic image of a forward portion of the borehole ahead of the downhole investigation tool and a rear/side portion of the borehole behind or beside the downhole investigation tool, at least one magneto-vision probe configured to generate a magneto-vision image of the forward portion and the rear/side portion of the borehole, and a mechanical attachment configured to attach the downhole investigation tool to a wireline or a steel pipe in the borehole.