摘要:
An electrical submersible pump assembly has a motor cooperatively engaged with a pump for driving the pump and a motor lead extending to the motor for supplying power to the motor. The motor lead has an electrical conductor enclosed within a tube. The tube is sealed from an exterior environment of the motor and contains a dielectric fluid. The motor may be filled with a dielectric lubricant and the interior of the tube of the motor lead may be in fluid communication with the dielectric lubricant. Alternatively, the motor may filled with a dielectric lubricant and the dielectric fluid within the interior of the tube of the motor lead may be sealed from the dielectric lubricant.
摘要:
A cable for transmitting high voltage electricity for use with an electric submersible pump has a plurality of solid conductors for conducting electricity along the length of the cable. The solid conductors are uniformly and firmly bonded to the surrounding insulation with a thin bonding layer applied directly over the conductor. A layer of conductive fabric tape surrounds the insulation to form an outer stress control layer. The insulated conductors are surrounded by an extruded layer of lead. A second layer of fabric tape surrounds the lead. An armored outer layer surrounds the insulated conductors and the lead. Space between the insulated and wrapped conductors and the armored outer layer is filled with a jacket material.
摘要:
A siding tool is used to position overlapping siding planks. The tool has an elongated member with a hook on an upper end that fits over an upper edge of a first plank. A support is carried by the elongated member for supporting the lower edge of a second plank that overlaps the first plank. The elongated member and the hook are upwardly movable from the engaged position. The hook is rotatable to a disengaged position once moved above the upper edge of the first plank. The disengaged position allows the tool to be withdrawn by pulling downward.
摘要:
A cable for a submersible pump has three insulated power conductors assembled in a flat configuration. The power conductors are wrapped with an inner armor such as a metal strip. An auxiliary line is placed alongside the inner armor and wrapped in an outer armor. The outer armor is also a metal strip.
摘要:
An electrical cable connector for conducting electricity across the interface of two areas containing two different fluids having substantially the same pressure and that are subjected to rapid increases in pressure. The electrical cable connector includes a hollow housing positioned between the two areas of fluid, an electrical cable extending into the housing, and a sealing assembly for sealing the space between the electrical cable and the inner surface of the housing to prevent fluids from passing between the two areas. The sealing assembly includes an annular sealing element or elements, optional O-rings, a bushing, a compression spring for axially compressing and thereby radially biasing the sealing element or elements, a conductor connector end, and a locking ring. The sealing elements are pressure energized and are generally U-shaped in longitudinal cross section, having first and second concentric leg portions. A porous material, a series of protrusions, or a substantially incompressible, dielectric flowable material is located between the leg portions of the sealing element or elements to prevent them from collapsing upon themselves due to rapid increases in pressure on the sealing element or elements.
摘要:
A lead sheathed power cable especially useful for powering electric submersible pumps in brine wells. The cable is easy to grip and support and resists damage during flexing and chemical attack. The cable comprises at least one power conduit, vulcanized filler material enclosing the power conduit, a lead tube enclosing the filler material, a spacer assembly enclosing the tube, and an outer armor sheath. The armor sheath has a helically grooved inner surface which is interfitted with a conforming helically grooved outer surface on the malleable tube. The outer surface on the tube is helically grooved during initial heating of the cable, which vulcanizes and thermally outwardly expands the filler material and outwardly expands the tube so that the groove on the armor sheath is impressed into the tube. The spacer assembly comprises at least one bedding tape formed of a fabric backing tape with rubber carried thereon and is used to space the outer surface of the tube from the inner surface of the sheath to facilitate flexing of the cable.
摘要:
An armored electrical cable structure for resisting destruction and degradation of the conductor insulation, particularly on the outer conductors. The structure also provides the additional benefits of resisting decompression expansion of the conductor insulation, attack by corrosive agents as well as the conduction of heat from the interior parts of the cable structure to the cable exterior for dissipation.
摘要:
A system, method and apparatus for incorporating a fiber optic cable into a power cable for an electrical submersible pump is disclosed. The fiber optic components are protected from damage during handling of the cable with pump cable components, such as lead sheaths and jacketing materials. The optical fibers are protected from damage due to corrosive oil well chemicals and gasses, as well as protected from decompression damage.
摘要:
Helically wound coil springs are wrapped around and attached at regular intervals to a cable, which is positioned within tubing. The support springs are attached to the cable to provide support to the cable. The upper section of each support spring is affixed to the cable. A remainder of each spring is formed in a long open helix facing downward when the tubing is installed in a well. The open helix portion of the spring is larger than the inside diameter of the coiled tubing. During placement into the coiled tubing, the springs elongate and decrease in diameter. When the coiled tubing is installed vertically within a well, the springs compress due to the weight of the cable and engage the inside surface of the coiled tubing with a substantial portion of their length, thereby supporting the cable.
摘要:
An electrical submersible pump assembly supported on coiled or continuous tubing. A power cable extends through the coiled tubing for supplying electrical power to the pump assembly. The cable has an outer diameter that is less than the inner diameter of the tubing, resulting in a cable annulus surrounding the cable. Supports attached to the cable frictionally or mechanically engage the cable with the coiled tubing to support the weight of the cable with the tubing. The supports define passages that allow fluid to flow by within the cable annulus from the surface. A port is provided in the coiled tubing at the electrical submersible pump assembly for discharging fluid pumped from the surface down the cable annulus. A tube may be provided to extend downward from the port alongside of the electrical submersible pump. Fluid may be pumped from an upper end of the well down the cable annulus and out of the port to free up sand accumulation on the packer.