Abstract: A sensing apparatus includes a sheath, a central member disposed in the sheath, at least one optical fiber disposed with the central member, and a film adhesive disposed between the central member and the sheath, the film adhesive provided in one or more sheets or strips and disposed in one or more layers between the central member and the sheath, and the film adhesive attached to the sheath.

Abstract: A sensing apparatus includes a sheath, a central member disposed in the sheath, at least one optical fiber disposed with the central member, and a film adhesive disposed between the central member and the sheath, the film adhesive provided in one or more sheets or strips and disposed in one or more layers between the central member and the sheath, and the film adhesive attached to the sheath.

Abstract: A fiber optic strain locking arrangement includes a cable assembly having an outer radial surface, an optical fiber strain transmissively coupled to the outer radial surface, and tubing disposed at the outer radial surface. The tubing is strain locked to the outer radial surface through at least one of interference fit with granules at least partially embedded into at least one of the tubing and the outer radial surface and adhesive bonding to both the tubing and the outer radial surface.

Abstract: A fiber optic splice protecting system and method includes a tubular sized to fit around spliced ends of optical fibers, and a sealant positioned in an annular space defined between the optical fibers and the tubular. The sealant is configured to cure from a liquid to a solid. The tubular is at least partially formed of a material that is gas permeable.

Abstract: A pressure sensing system includes a pressure sensor, an optical fiber in operable communication with the pressure sensor, and a body having a diaphragm integrally formed therein and separated a distance from the optical fiber.

Abstract: A fiber optic cable arrangement includes a core, a sheath surrounding the core and being strain locked to the core, and at least one optical fiber positioned within the sheath being strain locked to the core.

Abstract: A splicable fiber optic sensing system includes, a core, a sheath surrounding the core, an adhesive disposed between the core and the sheath at some locations and not at other locations, and at least one optical fiber disposed between the core and the sheath being sense transmissively locked to the core by the adhesive at the locations containing the adhesive.

Abstract: A splicable fiber optic sensing system includes, a core, a sheath surrounding the core, an adhesive disposed between the core and the sheath at some locations and not at other locations, and at least one optical fiber disposed between the core and the sheath being sense transmissively locked to the core by the adhesive at the locations containing the adhesive

Abstract: A distributed sensing apparatus and system including one or more optical fibers disposed in a channel on the surface of a central member. A layer of film adhesive is disposed between the central member and a sheath. The film adhesive is circumferentially wrapped around the central member prior to arranging the sheath around the central member. The film adhesive is then cured and expanded to firmly attach the optical fiber to the sheath.

Abstract: A method of coupling optical fiber to a tubular includes positioning at least one optical fiber at least partially within an annular cavity defined between a tubular and an elongated member and radially compressing the elongated member against the tubular.

Abstract: A fiber optic splice protecting system and method includes a tubular sized to fit around spliced ends of optical fibers, and a sealant positioned in an annular space defined between the optical fibers and the tubular. The sealant is configured to cure from a liquid to a solid. The tubular is at least partially formed of a material that is gas permeable.

Abstract: A pressure sensing system includes a pressure sensor, an optical fiber in operable communication with the pressure sensor, and a body having a diaphragm integrally formed therein and separated a distance from the optical fiber.

Abstract: A fiber optic strain locking arrangement includes a cable assembly having an outer radial surface, an optical fiber strain transmissively coupled to the outer radial surface, and tubing disposed at the outer radial surface. The tubing is strain locked to the outer radial surface through at least one of interference fit with granules at least partially embedded into at least one of the tubing and the outer radial surface and adhesive bonding to both the tubing and the outer radial surface.

Abstract: A contamination resistant connecting system includes, a first conduit, a first connector in operable communication with the first conduit, a first seal configured to seal at least part of the first connector from an environment, a second conduit operationally connectable with the first conduit, a second connector in operable communication with the second conduit that is operationally connectable with the first connector and a second seal configured to seal at least part of the second connector from an environment. Additionally, at least one piercing device is configured to pierce through the first seal and the second seal to allow operational connection of the first conduit with the second conduit.

Abstract: A fiber support arrangement for a downhole tool includes at least one tubular and at least one bracket positioning the at least one tubular spaced radially from a downhole tool and lacking contact therewith. At least two fibers are supported at the at least one tubular with at least two of the at least two fibers having a different helical angle from one another relative to an axis of the downhole tool.

Abstract: A method for estimating a shape, the method including: selecting a structure comprising a plurality of strain sensors inoperable communication with the structure, each strain sensor configured to provide a strain measurement; placing the structure in a borehole; receiving the strain measurements from the plurality of strain sensors; creating a mesh grid having nodes, each node related to a location of one strain sensor and assigned a strain value measured by the one strain sensor; creating an additional node for the mesh grid wherein a strain value assigned to the additional node is derived from the strain value corresponding to at least one adjacent node; and performing an inverse finite method using the mesh grid with the assigned strain values to estimate the shape.

Abstract: An electric machine assembly and a method of installing an electric machine assembly, the electric machine including a downhole electric machine; and a fiber operatively arranged at least partially through a housing of the electric machine for sensing at least one parameter of the electric machine assembly.

Abstract: A support system for fiber optic cable adjacent a bottom hole assembly is fabricated from flat sheet that has a capillary tube attached with the assembly spirally wound into a tube shape and the spiral seal being welded. Male and female end connections that comprise timed threads are then oriented at each tube end with respect to where the capillary tube terminates so that there will be a reduced or no misalignment of fiber optic cable ends when timed threads are fully made up. A predetermined tightening torque range also allows some fine tuning of the desired alignment to reduce any offset of fiber optic cable ends. The capillary can run inside or outside the assembled tube shape.

Abstract: Disclosed herein is a carrier for an optical fiber having a plurality of optical sensors located thereon. The carrier has a test section comprising a cavity and at least one geometric discontinuity, wherein in response to a pressure applied to the test section, a stress concentration is formed proximate to the geometric discontinuity, and wherein the optical sensor is adhered to at least a part of the geometric discontinuity. The cavity may be filled with a liquid or a gel. A temperature optical sensor may also be provided adjacent to the pressure optical sensor.

Abstract: A method for making a cable includes creating a curvature in a conduit; pumping one or more fibers into the conduit; and securing at least one of the one or more fibers to a shortest pathway within the conduit and cable.