An apparatus includes a cassette configured to hold optical fiber comprising one or more optical sensors. The cassette comprises a spool configured to one or more of extract and retract the optical fiber from the cassette. A fiber monitor is coupled to the cassette. The fiber monitor is configured to monitor at least one parameter of the optical fiber as the optical fiber is extracted from the cassette.

A method of securing optical fiber and/or innerduct/microduct 140 within a microtrench 11 by laying the optical fiber and/or innerduct/microduct 140 within a microtrench 11 and inserting a plurality of microtrench plugs 6 into the microtrench 11 above the optical fiber and/or innerduct/microduct 140 to secure the optical fiber and/or innerduct/microduct 140 in the microtrench 11 and reduce bowing of the optical fiber and/or innerduct/microduct 140 up from a bottom of the microtrench 11.

A power and communications cable may include an electromagnetic waveguide, an inner metallic tubular surrounding the electromagnetic waveguide, an electrically conductive material surrounding the inner metallic tubular, an electrically insulating material surrounding the electrically conductive material, and an outer metallic tubular resistant to corrosion and abrasion surrounding the electrically insulating layer. The example system may include an electrical device locatable in the wellbore and coupleable to the cable and a control unit coupleable to the cable and operable to supply power to and communicate with the electrical device via the power and communications cable.

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.

In an aspect of the present disclosure, a submarine device includes a main tail cable connected to a submarine cable, a first branch tail cable including a first group of optical fibers among a plurality of optical fibers included in the main tail cable, a second branch tail cable including a second group of optical fibers among the plurality of optical fibers, a branch member that couples the main tail cable to the first and second branch tail cables and including therein a through hole for branching the plurality of optical fibers included in the main tail cable into the first group and the second group, and a device main body including a first introduction part for introducing the first branch tail cable into the device main body and a second introduction part for introducing the second branch tail cable into the device main body.

In an aspect of the present disclosure, a submarine device includes a main tail cable connected to a submarine cable, a first branch tail cable including a first group of optical fibers among a plurality of optical fibers included in the main tail cable, a second branch tail cable including a second group of optical fibers among the plurality of optical fibers, a branch member that couples the main tail cable to the first and second branch tail cables and including therein a through hole for branching the plurality of optical fibers included in the main tail cable into the first group and the second group, and a device main body including a first introduction part for introducing the first branch tail cable into the device main body and a second introduction part for introducing the second branch tail cable into the device main body.

An opto-electrical cable may include an opto-electrical cable core and a polymer layer surrounding the opto-electrical cable core. The opto-electrical cable core may include a wire, one or more channels extending longitudinally along the wire, and one or more optical fibers extending within each channel. The opto-electrical cable may be made by a method that includes providing a wire having a channel, providing optical fibers within the channel to form an opto-electrical cable core, and applying a polymer layer around the opto-electrical cable core. A multi-component cable may include one or more electrical conductor cables and one or more opto-electrical cables arranged in a coax, triad, quad configuration, or hepta configuration. Deformable polymer may surround the opto-electrical cables and electrical conductor cables.

The present disclosure describes apparatuses and methods for separating and installing optical fibers into furcation tubing. A modular fiber optic furcation assembly can include one or more furcation bodies, each comprising a plurality of parallel conduits oriented in a single plane and extending from a first face of the furcation body to an opposing second face of the furcation body; and an attachment mechanism to removably attach the furcation body to at least one additional furcation body on a face orthogonal to each of the first face and second face of the fan-out structure.

An end piece is provided for guiding a needle intended to be inserted in a sheath occupied by at least one installed cable. The end piece includes: a free first end referred to as a head of a shape suited to slipping in between an internal wall of the sheath and the at least one installed cable; a second end fixed to the needle; and a part connecting the two ends and referred to as a shank. The shank has a flexibility that increases toward the head.

A method of installing a cable in an elongated structure, wherein the cable includes one or more lines is disclosed. The method includes a) enclosing the one or more lines of the cable using a sheath, b) coupling one end of the sheath to a flexible layer, c) disposing the flexible layer at a defined location at an inner surface of elongated structure, d) creating an access path extending from an outer surface of the elongated structure, opposite to the defined location, and e) extracting at least one of the flexible layer, the one or more lines, and the sheath from inside the elongate structure via the access path. Further, a system for installation of a cable in an elongated structure is also disclosed.