A molding method of a waterproof member is provided. The waterproof member is molded by molds and is for a coated electric wire. The molds include mold division surfaces including molding portions and electric wire mold clamping portions. The electric wire mold clamping portions are to sandwich the coated electric wire at sides of the molding portions. One of the electric wire mold clamping portions includes a convex portion and a side wall erected on an end of the convex portion. The other of the electric wire mold clamping portions includes a concave portion. One of the molding portions includes a side wall entering groove into which the side wall enters. The method includes molding the waterproof member accommodated in the concave portion with the waterproof member being pressed by the convex portion toward a direction in which one of the mold is attached to the other.

A wire harness includes an electric wire bundle and an exterior member for electric wire. The exterior member for electric wire includes a tubular exterior body for protecting the electric wire bundle, a slit formed in the exterior body along an exterior axis of the exterior body, and an inner portion continuous with a circumferential end portion of the exterior body. The inner portion is disposed on an outer side of the exterior body before the electric wire bundle is accommodated. Further, the inner portion is formed with an electric wire pressed portion against which the electric wire bundle is pressed. Further, the inner portion is pushed into the exterior body through the slit while being deformed so as to be inverted when the electric wire bundle is pressed against the electric wire pressed portion, and is accommodated in the exterior body together with the electric wire bundle.

An apparatus for generating acoustic waves in a medium to stimulate oil recovery within an oil reservoir, the apparatus being operable with a single moving part—a central rotor. The apparatus being suitable for use in association with a system to facilitate the co-generation of geothermal energy or sequestration and storage of CO.sub.2.

A waterproof structure of a wire harness includes at least one bundle of an electric wire group in which a plurality of electric wires are linearly arranged, a damming part made of a hard resin material, the damming part which surrounds a part of the electric wire group in an extension direction of the electric wire group and which includes an outer periphery shape part according to a shape of a trapezoidal through hole in an electric wire group insertion part with a divided structure, and a water stop material which prevents water from entering a gap between the electric wire group insertion part and the outer periphery shape part and which is formed on an inner peripheral surface of the through hole.

A manufacturing method of a wire harness which includes at least one bundle of an electric wire group in which a plurality of electric wires are linearly arranged, and a damming part made of a resin material surrounding a part of the electric wire group in an extending direction of the electric wire group and including an outer periphery shape part according to an inner peripheral shape of an electric wire group insertion part, the manufacturing method includes a mold clamping step of disposing a part of the one bundle of the electric wire group and mold clamping an upper mold and a lower mold and an injection step of performing low pressure injection of a larger amount of molten resin than a volume of a cavity into the cavity.

A technique facilitates construction and operation of a power cable which may be used to supply power to an electric submersible pumping system downhole into a wellbore. The power cable comprises at least one electrical conductor. Each electrical conductor is insulated with an insulation layer and protected from deleterious fluids by a fluid barrier layer. Further protection is provided by a protective layer disposed around the fluid barrier layer. The protective layer is foamed to provide a cushion layer and to further protect components of the power cable. An armor layer may be disposed around the protective layer.

A technique facilitates construction and operation of a power cable which may be used to deploy an electric submersible pumping system downhole into a wellbore. The power cable is constructed to provide structural support of the electric submersible pumping system while also providing electric power to the electric submersible pumping system when located downhole in the wellbore. The power cable comprises at least one conductor and a plurality of layers selected and arranged to ensure long-term support and delivery of electrical power in the relatively harsh downhole environment.

An insulated wire includes a conductor, and a flame-retardant insulation layer that includes a resin composition including a flame retardant and is arranged around the conductor, and a water-blocking layer that is arranged around the flame-retardant insulation layer and has a water absorption of not more than 0.5% at saturation. The thickness of the water-blocking layer is not less than 25 μm.

An insulated wire includes a conductor, a flame-retardant inner layer that is provided around the conductor and includes a metal hydroxide, and a water ingress prevention layer provided around the flame-retardant inner layer. The insulated wire may further include a flame-retardant outer layer provided around the water ingress prevention layer.

A gas blocking cable includes cabled wires, where each wire includes cabled conductors having interstitial areas there between. An insulation material circumferentially surrounds the cabled conductors and a conductor filling material is positioned within the interstitial areas between conductors. A shield circumferentially surrounds the cabled wires so that a cable is formed with areas between the wires. A wire filling material is positioned within the areas between the wires. Each of the conductor filling material and wire filling material is inert, non-flammable and able to withstand a temperature of at least approximately 200° C.