Abstract: Disclosed are methods and systems for relieving strain of an optical fiber installed in a conduit downhole, wherein the conduit is purged with a purge gas to relieve mechanical strain of the fiber.

Abstract: A system and method for calibrating a distributed temperature sensing (DTS) system having a fiber optic receiver coupled to an optical fiber, includes fiber Bragg gratings (FBGs) integrally formed within the optical fiber, and a processor configured to compute a temperature datum for a location of each FBG based on signals generated by the fiber optic receiver in response to light reflections from the FBG; and adjusting a computed temperature data profile along the optical fiber segment, based on the computed temperature datum for each location of an FBG.

Abstract: A vibrating wire piezometer pressure sensor system has (a) a vibrating wire connected to a pressure diaphragm; (b) a first electromagnetic coil (EMC) associated with the vibrating wire; (c) a second EMC associated with the vibrating wire; wherein the first EMC and the second EMC are wired in series and in parallel to a signal processor for converting an electrical signal to a pressure measurement.

Abstract: A vibrating wire piezometer pressure sensor system has (a) a vibrating wire connected to a pressure diaphragm; (b) a first electromagnetic coil (EMC) associated with the vibrating wire; (c) a second EMC associated with the vibrating wire; wherein the first EMC and the second EMC are wired in series and in parallel to a signal processor for converting an electrical signal to a pressure measurement.

Abstract: A thermistor cable is formed from a tubing and a plurality of thermistor conductors bundled within the tubing, wherein each thermistor conductor forms a junction with a shared thermistor conductor to form a thermistor junction, and each thermistor junction is attached to a support cable in a thermistor bundle. The cable is formed by pulling the thermistor bundle into the tubing.

Abstract: A method of conveying a fiber optic cable through a conduit having an inside diameter involves connecting an interior pig assembly to a far end of the fiber optic cable, the interior pig assembly having an outside diameter smaller than the conduit inside diameter, and inserting the interior pig assembly into the conduit. To convey the fiber optic cable through the conduit, the interior pig assembly may be magnetic, and an exterior assembly including a magnet outside the conduit may be used to pull the interior pig assembly pig through the conduit. In addition or alternatively, a gas may be injected into the conduit to push the pig assembly through the conduit.

Abstract: A thermocouple cable is formed from a tubing and a plurality of thermocouple conductors bundled within the tubing, wherein each thermocouple conductor forms a junction with a shared thermocouple conductor to form a thermocouple junction, and each thermocouple junction is attached to a support cable in a thermocouple bundle. The cable is formed by pulling the thermocouple bundle into the tubing.

Abstract: A method of conveying a fiber optic cable through a conduit having an inside diameter involves connecting an interior pig assembly to a far end of the fiber optic cable, the interior pig assembly having an outside diameter smaller than the conduit inside diameter, and inserting the interior pig assembly into the conduit. To convey the fiber optic cable through the conduit, the interior pig assembly may be magnetic, and an exterior assembly including a magnet outside the conduit may be used to pull the interior pig assembly pig through the conduit. In addition or alternatively, a gas may be injected into the conduit to push the pig assembly through the conduit.