Abstract: A borehole instrument includes a housing sized and shaped to fit inside a borehole, at least one image sensor disposed within the housing and configured to capture images of an inside wall of the borehole, at least one illumination light source disposed within the housing and configured to illuminate the inside wall of the borehole, a laser light source disposed within the housing and configured to emit laser light towards the inside wall of the borehole, a data processing subsystem coupled to the image sensor and configured to receive image data from the image sensor, the image data representative of images of the inside wall of the borehole. The data processing subsystem is further configured to capture borehole profile data from images containing laser light reflected from the inside wall of the borehole.

Abstract: A borehole instrument includes an image sensor for capturing images of an inside wall of a borehole. A borehole profile may also be measured by, for example, a laser. The same image sensor may be used for image capture and profile measurement. Different image sensors may be used for image capture and profile measurement. Image capture and profile measurement may be performed with reference to the same depth measurement, so that images and profiles are depth-aligned at capture. Orientation of the instrument within the borehole may also be measured to compensate for rotation of the instrument. A communications subsystem can transmit image data, profile data, and orientation data to a computer located outside the borehole for storage and analysis.