Abstract: A downhole inspection tool for observing conditions in the harsh environment of a well bore. An embodiment of the tool comprises a high frequency camera, which operates in the millimeter wave frequency range with the capability of seeing through opaque environments. In use, the tool system provides pictures of conditions downhole for use by operators attempting to repair and/or remove broken downhole equipment by being able to observe the actual downhole conditions that exist. Furthermore, the system can be used to inspect the inside of a well casing or tubing for the presence of cracks, frac holes, slots, slits, protruding structures, stuck hardware, environmental conditions, etc.

Abstract: A new and improved piezoelectric device package that can withstand pressures of at least 25,000 psi, high temperatures of at least 300° C., as well as acidic and caustic environments, such as often encountered in oil and gas wells. The package is comprised of a hermetically sealed piezoelectric device header with an internal cavity for mounting various types of piezoelectric devices, an impedance matching network, an antenna, and a protective radome outer cover. The internal structure of the device package is for the most part solid with the exception of an approximate 1-micron space above the surface of the piezoelectric device to allow acoustic waves a path to travel. The general shape of the piezoelectric device package is typically that of a round disk that can be installed and secured by attaching fingers or other means in a bored cavity of a tool, pipe, or other piece of equipment.