Abstract: A method of assembling an apparatus for containing reagents for a chemical reaction. The apparatus includes an elongate housing and a receptacle. The elongate housing may include a cooling means, and end fittings which may include ports where fluids may be introduced and/or removed. Specifically, the method relates to the securement of a receptacle relative to the outwardly facing surface of the housing.

Abstract: One embodiment includes an apparatus comprising a steerable well bore drilling tool having a main tool body. The steerable well bore drilling tool includes an inertial measurement unit to output a measurement used to determine an azimuthal deviation and inclination of the steerable well bore drilling tool during a drilling operation.

Abstract: One embodiment includes an apparatus comprising a steerable well bore drilling tool having a main tool body. The steerable well bore drilling tool includes an inertial measurement unit to output a measurement used to determine an azimuthal deviation and inclination of the steerable well bore drilling tool during a drilling operation.

Abstract: A rotating centralizer and a centralizing bearing assembly are provided in order to maintain a survey instrument assembly at a fixed angular orientation with respect to a core barrel supported by the bottomhole assembly of a rotating drill string and rotationally isolated therefrom. The centralizer comprises a sleeve having an inner bearing surface providing for rotation of the sleeve with respect to a support sub, and outer bearing surfaces located at the ends of four vanes allowing for rotation of the sleeve with respect to the surrounding drill string. The centralizing bearing assembly comprises a hanger sub, an outer sleeve which is a force fit within a hang-off sub of the drill string and an annular roller bearing unit surrounding the hanger sub and engaging the inner surface of the outer sleeve. The roller bearing unit comprises a plurality of tapered roller bearings having inclined axes of rotation.

Abstract: A rotating centralizer and a centralizing bearing assembly are provided in order to maintain a survey instrument assembly at a fixed angular orientation with respect to a core barrel supported by the bottomhole assembly of a rotating drill string and rotationally isolated therefrom. The centralizer comprises a sleeve having an inner bearing surface providing for rotation of the sleeve with respect to a support sub, and outer bearing surfaces located at the ends of four vanes allowing for rotation of the sleeve with respect to the surrounding drill string. The centralizing bearing assembly comprises a hanger sub, an outer sleeve which is a force fit within a hang-off sub of the drill string and an annular roller bearing unit surrounding the hanger sub and engaging the inner surface of the outer sleeve. The roller bearing unit comprises a plurality of tapered roller bearings having inclined axes of rotation.