Abstract: A technique enables mechanical control of a directional valve. The technique may utilize a system comprising a directional valve which is mechanically actuatable between a plurality of flow positions. The directional valve is mechanically coupled with an indexer mechanism. The indexer mechanism may be shifted to a plurality of desired indexer positions defined by a cam track. As the indexer mechanism is shifted between indexer positions, the mechanical link between the indexer mechanism and the directional valve mechanically shifts the directional valve to selected flow positions of the plurality of flow positions.

Abstract: A downhole tool includes a housing. A magnet, an inductor, and a piston are positioned within the housing. The piston moves from a first position to a second position in response to a pressure of a fluid in the housing increasing. A distance between the magnet and the inductor varies when the piston moves, thereby causing the inductor to generate power.

Abstract: A slip joint assembly that is usable with a well includes first, second and third tubular housing sections; and first and second mandrels. The first tubular housing section is adapted to connect to a first tubing string segment; the second tubular housing section is adapted to connect to a second tubing string segment; the third tubular housing section disposed between the first and second tubular housing sections; the first mandrel forms a slidable connection with the first tubular housing section; and the second mandrel forms a slidable connection with the second tubular housing section.

Abstract: A technique enables mechanical control of a directional valve. The technique may utilize a system comprising a directional valve which is mechanically actuatable between a plurality of flow positions. The directional valve is mechanically coupled with an indexer mechanism. The indexer mechanism may be shifted to a plurality of desired indexer positions defined by a cam track. As the indexer mechanism is shifted between indexer positions, the mechanical link between the indexer mechanism and the directional valve mechanically shifts the directional valve to selected flow positions of the plurality of flow positions.

Abstract: A downhole tool includes a housing. A magnet, an inductor, and a piston are positioned within the housing. The piston moves from a first position to a second position in response to a pressure of a fluid in the housing increasing. A distance between the magnet and the inductor varies when the piston moves, thereby causing the inductor to generate power.