Abstract: Logging while drilling apparatus included in a rotatable drilling string of drill pipe disposed in a well bore. Apparatus generally includes a combination communication system comprising two communication channels coacting in cascade or tandem fashion with a first lower communication channel having very low attenuation characteristics but being relatively inconvenient to connect or disconnect and with a second upper communication channel having greater attenuation characteristics but being very convenient to connect or disconnect when adding drill pipe as drilling continues. Electrical power for the entire combination in the well bore is provided from a location remote from the bottom of the well. Also discloses related methods of logging while drilling.

Abstract: Method and apparatus for emplacing a liner in a conduit in a well penetrating subterranean formations characterized by suspending at a predetermined depth in the well at least one annular liner having an annular body portion and an adjacent, concentrically disposed swage means that is adapted for being driven interiorly of the body portion for expanding the latter outwardly into contact with the conduit; firing a setting tool in the method to drive the swage means concentrically interiorly of the body portion; and removing the setting tool, leaving the swage and the body portion set in the conduit with a large bore penetrating longitudinally thereof. Also disclosed are straddle patches having a liner at each end, either set in a unitary operation or set by a two-step operation; other combinations employing the liners and the specific apparatus for setting the liners.

Abstract: The specification discloses an apparatus and process for beading the projecting ends of heat exchange tubes to a header or tube sheet of a water heater. The apparatus comprises an expandable mandrel having outwardly movable jaws supported around the forward end of a spindle. The mandrel is adapted to be inserted into a tube and to be expanded outward to tightly grip the inside of the tube near the header and to expand the tube against the header. An annular beading head having an annular beading groove is supported around the spindle rearward of the jaws and is adapted to be moved forward to engage the groove with the projecting end of the tube to force the end of the tube radially outward and against the side of the header.

Abstract: A throttle actuator for accelerating and decelerating the speed of an internal combustion engine in response to work demand where the engine drives the pump of a hydraulic system. In one aspect, the invention is directed to a throttle actuating piston and rod arrangement for operating the throttle of the engine and a pulsation intensifier for sensitively controlling the piston's movement. The pulsation intensifier is connected in a pressure line from the pump and comprises a free spring biased floating piston of configuration such that there is a differential in area across the piston for fluid pressure intensification purposes. The intensifier piston in one embodiment also has an axial passage therethrough and an orifice communicating with the throttle actuating piston. Both pistons are slidably mounted in housings which have springs to normally position the pistons in directions to cause the engine to return to idle speed when there is no work demand.

Abstract: A linear indexing machine comprising a continuously driven conveyor for conveying a plurality of pallets to and from a plurality of index stations to allow work functions to be performed on work pieces carried by the pallets. At each station, the pallets are detached from the conveyor while at conveyor speed; decelerated; stopped for a predetermined time interval to allow a work function to be performed on their work pieces; accelerated to conveyor speeds; and then attached to the conveyor for conveyance to the next station. An index cam follower is carried by each pallet and an index cam, driven in synchronism with the conveyor, is disposed at each station for co-acting with the cam followers of the pallets to decelerate, stop, and accelerate the pallets.