Various embodiments include methods and apparatus structured to install an optical fiber cable into a well at a well site. In a from-bottom-to-top embodiment, an anchor deployed at a selected location in a hole of the well can be used and the optical fiber cable can be pulled up to a surface of the well from the selected location. In a from-top-to-bottom embodiment, an optical fiber cable can be moved down from the surface until an end of the optical fiber cable is locked at a selected location by a catcher disposed at the selected location. With the optical fiber cable in the well, a portion of the optical fiber cable can be coupled to surface instrumentation. Additional apparatus, systems, and methods can be implemented in a variety of applications.

Various embodiments include methods and apparatus structured to install an optical fiber cable into a well at a well site. In a from-bottom-to-top embodiment, an anchor deployed at a selected location in a hole of the well can be used and the optical fiber cable can be pulled up to a surface of the well from the selected location. In a from-top-to-bottom embodiment, an optical fiber cable can be moved down from the surface until an end of the optical fiber cable is locked at a selected location by a catcher disposed at the selected location. With the optical fiber cable in the well, a portion of the optical fiber cable can be coupled to surface instrumentation. Additional apparatus, systems, and methods can be implemented in a variety of applications.

A system may include a splice housing positioned along a portion of tubing in a wellbore and a splice housing protector around the splice housing. An uphole fiber optic cable may extend through the splice housing protector. The uphole fiber optic cable may mate with a first port of the splice housing at a downhole end of the splice housing protector. A downhole fiber optic cable may mate with a second port of the splice housing in the splice housing protector. The splice housing may splice the uphole fiber optic cable and the downhole fiber optic cable.

Method for installing an elongated element, in a submarine duct, the submarine duct having an entry port and an exit port located in outer liquid (OL) at a second depth,

the method comprising the steps of: introducing the elongated element into the entry port, introducing propelling liquid (PL) into the entry port,
characterized in that the method comprises a step of sucking propelling liquid (PL) out of the exit port of the duct with an immerged suction pump being operated at a predetermined suction pressure drop (ΔP.sub.pump) of propelling liquid (PL) so that the predetermined suction pressure drop (ΔP.sub.pump) applied to propelling liquid (PL) is smaller than a hydrostatic pressure (P.sub.hydro) of the outer liquid (OL) at the second depth.

A pushing tool for propelling cable into a duct. The pushing tool includes a drive wheel that is coupled with a base and a rotatable handle. A first cable guide and a second cable guide are configured to hold the cable. A duct guide is configured to hold the duct. Furthermore, a tension wheel is configured to interact with the drive wheel such that an orifice is formed between the tension wheel and the drive wheel, the orifice being configured to receive the cable. Upon rotation of the rotatable handle, the drive wheel interacts with the tension wheel to propel the cable into the duct.

A pushing tool for propelling cable into a duct. The pushing tool includes a drive wheel that is coupled with a base and a rotatable handle. A first cable guide and a second cable guide are configured to hold the cable. A duct guide is configured to hold the duct. Furthermore, a tension wheel is configured to interact with the drive wheel such that an orifice is formed between the tension wheel and the drive wheel, the orifice being configured to receive the cable. Upon rotation of the rotatable handle, the drive wheel interacts with the tension wheel to propel the cable into the duct.

A method of laying an optical cable according to the present disclosure includes: installing a laying strip, in which the optical cable is to be embedded, on a road surface or a wall surface; forming a cut line, for embedding the optical cable, on the installed laying strip; and embedding the optical cable in the formed cut line.

A cable with a tactile twist indicator, wherein the cable has at least one core for signal transmission and a cable sheath surrounding the at least one core, wherein the cable has precisely one tactile twist indicator, which extends along a longitudinal direction of the cable over essentially the entire length of the cable sheath and which has a predetermined orientation relative to the at least one core over essentially the entire length of the cable sheath.

Embodiments of the present invention provide a unique new approach to generating operating condition information used for assessing flow assurance and structural integrity. More specifically, apparatuses, systems and methods configured in accordance with embodiments of the present invention enable multiplexed arrangement of optical fiber for sensing of operating conditions within a structural member and utilize fiber optic sensors for enabling monitoring of operating condition information within one or more elongated tubular members. To this end, fiber optic sensors are strategically placed at a plurality of locations along a length of each elongated tubular member thereby allowing critical operating conditions such as strain, temperature and pressure of the elongated tubular member and/or a fluid therein to be monitored. A multiplexing unit is used for allowing selective configuration of individual lengths of optical fiber for creating one or more contiguous optical fiber structures.

A system that may be used for deploying optical cables, the system may include a track having an outer edge and a surface, the track having a track gear disposed proximate the outer edge and a plurality of track grooves disposed on the surface of the track. The system may also include a spool having a first outer edge and a second outer edge. The spool may include a first wheel disposed on the first outer edge, a second wheel disposed on the second outer edge, a spool gear disposed on the first wheel and interfacing with the track gear, plurality of spool grooves, and a plurality of guides interfacing with the track to align the track grooves with the spool grooves.