Abstract: A linear motor includes a stator and a rotor that is axially moveable relative to the stator, wherein the rotor is permanently excited by a rotor magnetic field which is periodic with a first period length (PP) along its longitudinal axis, wherein the linear motor comprises a position detection device, which is designed to detect a position of the rotor in relation to the stator, wherein the position detection device comprises at least a first magnetic field sensor (S1) and a second magnetic field sensor (S2), wherein the first magnetic field sensor (S1) and the second magnetic field sensor (S2) are arranged on the stator spaced apart from each other by a first distance (d1) along the longitudinal axis of the rotor, wherein the first distance (d1) is at least approximately an odd multiple of one-sixth of the first period length (PP).

Abstract: A linear motor includes a stator and a rotor that is axially moveable relative to the stator, wherein the rotor is permanently excited by a rotor magnetic field which is periodic with a first period length (PP) along its longitudinal axis, wherein the linear motor comprises a position detection device, which is designed to detect a position of the rotor in relation to the stator, wherein the position detection device comprises at least a first magnetic field sensor (S1) and a second magnetic field sensor (S2), wherein the first magnetic field sensor (S1) and the second magnetic field sensor (S2) are arranged on the stator spaced apart from each other by a first distance (d1) along the longitudinal axis of the rotor, wherein the first distance (d1) is at least approximately an odd multiple of one-sixth of the first period length (PP).

Abstract: A blanking plug device, system and method of use, wherein the plug device has an anchoring portion for securing the blanking plug device within a tubing string or other well conduit. In preferred embodiments, the anchoring portion comprises a locking device such as the Extreme SUR-SET® locking system. However, other anchoring mechanisms may be utilized as well. The blanking plug device has a lower plug portion that incorporates a screening section. The screening section permits flow of fluid through the sidewall of the plug portion while substantially preventing the passage of solid particles.

Abstract: A blanking plug device, system and method of use, wherein the plug device has an anchoring portion for securing the blanking plug device within a tubing string or other well conduit. In preferred embodiments, the anchoring portion comprises a locking device such as the Extreme SUR-SET® locking system. However, other anchoring mechanisms may be utilized as well. The blanking plug device has a lower plug portion that incorporates a screening section. The screening section permits flow of fluid through the sidewall of the plug portion while substantially preventing the passage of solid particles.