# US 2014/0190706 A1 · Encapsulating an electric submersible pump cable in coiled tubing > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0190706 A1 - Document ID: US20140190706A1 - Status: Published application - Kind: A1 - Application number: 14/145,888 - Filed: 2013-12-31 - Published: 2014-07-10 - Earliest claimed: 2013-01-02 - Assignees: Schlumberger Technology Corporation - Applicants: Schlumberger Technology Corporation - Inventors: Joseph Varkey; Burcu Unal; Sheng Chang; Matthew Garber; Kevin T. Scarsdale - Web page: https://patentgrep.com/patent/US20140190706A1 ## CPC - F04B 47/06: having motor-pump units situated at great depth - E21B 17/206: {with conductors, e.g. electrical, optical} - E21B 19/22: Handling reeled pipe or rod units, e.g. flexible drilling pipes {(lifting or hauling appliances using two or more cooperating endless chains B66D3/003)} - E21B 43/128: {Adaptation of pump systems with down-hole electric drives} - H01B 7/046: {attached to objects sunk in bore holes, e.g. well drilling means, well pumps} - F04B: POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS (machines for liquids, or pumps, of rotary-piston or oscillating-piston type F04C; non-positive-displacement pumps F04D; pumping of fluid by direct contact of another fluid or by using inertia of fluid to be pumped F04F) - E21B: EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS - H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K}) ## Abstract An electric submersible pump (ESP) cable encapsulated in coiled tubing is provided. In an example process, ESP cable is drawn through coiled tubing. Liquid filler that cures into a supportive solid matrix is pumped into the coiled tubing. The solid matrix may be a rubberized filler or a closed-cell foam. Additives in the liquid filler can compensate for thermal expansion during operation of the ESP, or decrease overall weight of the solid matrix, or swell in the presence of oil, water, salt, or gas to seal a hole in the coiled tubing. The coiled tubing may be formed and seam-welded around the ESP cable from flat steel strip. A long coiled tubing resistant to stretch for deep wells may be produced by providing extra ESP cable for slack before the liquid filler cures into solid matrix. The coiled tubing may be clad with corrosion-resistant alloy for corrosive wells. ## Claims ### Claim 1 An apparatus, comprising: a coiled tubing for deploying an electrical apparatus in a well; a cable in the coiled tubing in communication with the electrical apparatus; and a liquid filler occupying a space between an outside of the cable and an inside of the coiled tubing, the liquid filler curing into a supportive solid matrix. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the cable powers the electrical apparatus and the electrical apparatus comprises an electric submersible pump (ESP). ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix comprises a rubberized filler. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix comprises a closed-cell foam matrix. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix comprises one of an epoxy, a silicone, an ether, an ester, a liquid fluorosilicone, a liquid fluoroelastomer, a SHIN-ETSU-SIFEL potting gel, a urethane, or a polymer that solidifies over time or when exposed to heat. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix further comprises an additive compensating for thermal expansion of the cable during an operation of the electrical apparatus. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix further comprises an additive for decreasing a weight of the supportive solid matrix, including one of a chopped carbon fiber, a glass fiber, a synthetic fiber, glass beads with air, formed particles, or chopped formed particles. ### Claim 8 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix further comprises an additive to swell in the presence of one of an oil, water, a salt, or a gas to seal off a hole in the coiled tubing. ### Claim 9 (depends on 1) The apparatus of claim 1, wherein the liquid filler cures into the supportive solid matrix due to an elapse of time or when exposed to heat. ### Claim 10 (depends on 1) The apparatus of claim 1, wherein the supportive solid matrix remains pliable and deformable in response to a stretch or a movement of the cable in relation to the coiled tubing, or in response to a deformation of the coiled tubing deviating around a spool, a reel, a drum, a well head, a goose neck, an injector, a joint, a casing, an annulus, a well wall, a well curve, a hangar, a termination, or a sheave. ### Claim 11 (depends on 1) The apparatus of claim 1, wherein the cable comprises one of a round cable, a flat cable, a coaxial cable, or a helically coiled cable. ### Claim 12 (depends on 1) The apparatus of claim 1, wherein the coiled tubing comprises a seam-welded tube formed over the cable and an excess of the cable comprising a slack. ### Claim 13 (depends on 1) The apparatus of claim 1, wherein the coiled tubing further comprises a corrosion resistant cladding. ### Claim 14 (depends on 13) The apparatus of claim 13, further comprising a low-carbon steel coiled tubing and a metallic bonding layer added on the low-carbon steel coiled tubing, wherein the corrosion resistant cladding bonds to the low-carbon steel coiled tubing via a chemical affinity with the metallic bonding layer and an associated heat of reaction from the chemical affinity. ### Claim 15 A method, comprising: pulling a cable into a coiled tubing for deploying an electrical apparatus in a well; and pumping a liquid filler that cures into a solid matrix into the coiled tubing to secure the cable in relation to the coiled tubing. ### Claim 16 (depends on 15) The method of claim 15, wherein the solid matrix comprises one of a rubberized filler or a closed-cell-foam. ### Claim 17 (depends on 15) The method of claim 15, further comprising drawing the coiled tubing down onto the solid filler when air gaps cause separation between the solid filler and the coiled tubing. ### Claim 18 A method, comprising: shaping a continuous piece of flat metal around a cable for communicating power or data to an electrical apparatus in a well; seam-welding the continuous piece of metal into a coiled tubing around the cable; and pumping a liquid filler that cures into a solid filler into the coiled tubing to secure the cable in relation to the coiled tubing. ### Claim 19 (depends on 18) The method of claim 18, further comprising shaping the continuous piece of flat metal around an excess of the cable to provide a slack for the cable when the coiled tubing stretches under an increased weight in a deep well application. ### Claim 20 (depends on 18) The method of claim 18, further comprising cladding an outside surface of the coiled tubing with a corrosion-resistant metal or alloy to resist a chemical corrosion.