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WO2020117132A1 - Ligne de transfert hybride pour équipement à plasma - Google Patents

Ligne de transfert hybride pour équipement à plasma Download PDF

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Publication number
WO2020117132A1
WO2020117132A1 PCT/SK2019/050014 SK2019050014W WO2020117132A1 WO 2020117132 A1 WO2020117132 A1 WO 2020117132A1 SK 2019050014 W SK2019050014 W SK 2019050014W WO 2020117132 A1 WO2020117132 A1 WO 2020117132A1
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WO
WIPO (PCT)
Prior art keywords
insulation layer
electrical insulation
electrical
transfer line
load
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SK2019/050014
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English (en)
Other versions
WO2020117132A4 (fr
Inventor
Jan Sitar
Jan Halgos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GA Drilling AS
Original Assignee
GA Drilling AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by GA Drilling AS filed Critical GA Drilling AS
Publication of WO2020117132A1 publication Critical patent/WO2020117132A1/fr
Publication of WO2020117132A4 publication Critical patent/WO2020117132A4/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/22—Multi-channel hoses
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E21B17/203—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with plural fluid passages
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/20—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables
    • E21B17/206—Flexible or articulated drilling pipes, e.g. flexible or articulated rods, pipes or cables with conductors, e.g. electrical, optical
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/22—Handling reeled pipe or rod units, e.g. flexible drilling pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/08—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall
    • F16L11/088—Hoses, i.e. flexible pipes made of rubber or flexible plastics with reinforcements embedded in the wall comprising a combination of one or more layers of a helically wound cord or wire with one or more braided layers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/04—Hoses, i.e. flexible pipes made of rubber or flexible plastics
    • F16L11/12—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting
    • F16L11/127—Hoses, i.e. flexible pipes made of rubber or flexible plastics with arrangements for particular purposes, e.g. specially profiled, with protecting layer, heated, electrically conducting electrically conducting

Definitions

  • the invention is related to a line for transfer of electrical power and fluids in a borehole.
  • transfer line An electrical-hydraulic hybrid transfer line (hereinafter referred to as the transfer line) serves to this purpose. Additionally, the transfer line needs to support the entire weight of the plasma equipmentduring operation, and is subject to the dynamic forces resulting from transfer line weight, friction, twisting, bendng, etc. during equipment movement and of fluid flow in aborehole.
  • Umbilical cables are available for various applications in a variety of versions. Umbilical transfer lines with integrated steel tubes, plastic tubes, high voltage power cables, optical data communication and the like are used extensively. Each type has its own merits and is capable of covering defined scope with some concessions (e.g. high voltage vs. large cable diameter).
  • a length of transfer line used to power plasma equipment is limited by several factors, of which weight is of greatest importance.
  • the umbilical type is considerably lighter than the coiled tubing version, on the other hand it is less resistant to wear and cannot be used in inclined boreholes.
  • U.S. Patent no. US 5,902,958 discloses an arrangement of umbilical cable components that includes three centrally positioned hydraulic tubes in a spiral arrangement surrounded by a ring of electrical cables and hydraulic tubes. This arrangement provides fora flow of the required amount of operating fluids whilst maintaining an optimal minimum bend radius.
  • U.S. Patent Application no. US 2011/0075978 A1 discloses cables for use in vertical boreholes.
  • the cables are provided with at least two rugged outer layers in order to protect the internal structure of the cable, which could otherwise be adversely affected by exposure to the hostile environment of a borehole.
  • a contemporary design and manufacture of transfer line is based on a concentric (coaxial) design.
  • U.S. Patent No. 7,798,234 B2 describes a variant of umbilical transfer line suitable for the remote control of flaps, valves and various other devices and for the supply of various types of fluid to underwater equipment.
  • various control and power signals can be transmitted,.
  • the transfer of fluids is achieved by means of steel tubes, whereas electrical cables are located around or even inside the steel tubes.
  • the steel tubes act primarily as transfer pathsfor process media, their natural load-bearing properties are complemented by additional steel bar elements.
  • the steel load-bearing bars replace plastic gap filling elements normally found in umbilicals. This solution is not suitable for great depths due to its relatively high weight. Increasing the thickness of the steel tube walls and/or increasing the diameter of the steel load bearing elements will improve overall mechanical strength but will also increase the weight of the transfer line.
  • the described concept allows a pipeline for fluid flow to be placed in in the centre of the transfer line.
  • the design would be relatively simple since it could be based on current manufacturing processes.
  • a new solution is required.
  • the transfer line is based on the transfer line disclosed in the prior art US 7,798,234 B2, and is modified for the needs of the material removal technology, the material that forms during the processes with the use of plasma equipment.
  • the objective of the proposed invnetion is a hybrid transfer line (hereinafter referred to as a transfer line) for plasma equipment that eliminates the above-mentioned drawbacks of the prior art.
  • the transfer line according to the proposed invention provides for all requirements for transfer of electrical energy and hydraulic fluids, as well as data communication between the surface infrastructure and the plasma equipment located at a defined depth, whilst having the required load-bearing capacity (30 to 40 1), and the smallest possible outside diameter.
  • the outer diameter of the transfer line does not exceed 73 mm.
  • the transfer line is intended for use in boreholes with depths up to 4500 m.
  • the transfer line, according to the invention is an increased load-bearing capacity.
  • the transfer line, according to the invention also differs from the prior art: in the number of transferred fluids; in the number and by the cross-section of the electrical conductors; and by the method of data transfer.
  • the essential difference is the relatively small outside diameter.
  • the design of the transfer line is in compliance with all functional transfer lines requirements for applications in the oil industry.
  • the transfer line according to the invention is also suitable for use in inclined boreholes.
  • the outer diameter of the transferline must be 2 7/8” (73 mm) at the absolute most to fit within the casing. This is the fundamental limiting parameter.
  • a hybrid transfer line according to the invention has two primary geometric variants:
  • Type A - a concentric system
  • Type B - a ternary hydraulic line system.
  • the hybrid transferline according to the invention of type A for plasma equipment comprises in the radial outward direction the following layers/components, respectively:
  • At least one electrical cable consisting in the radial outward direction of: o
  • An inner load-bearing and protective jacket having mechanical strength more than 1.0x10 6 Nm/kg and consisting of inner load-bearing elements ,
  • the transfer line further comprises at least one optical data line and at least one further electrical cable, while the outer load-bearing elements are twisted in one direction; and the inner load-bearing elements are twisted in the opposite direction, and where the wrapped complementary electrical insulation layer has a dielectric strength more than 5kV.
  • the hybrid transfer line according to the invention of type B for plasma equipment comprises in the radial inward direction the following layers/components, respectively:
  • An inner load-bearing and protective jacket having mechanical strength more than 1.0x10 6 N-m/kg, consisting of inner load-bearing elements,
  • Three hydraulic lines consisting of a tube shrouded with an extruded electrical insulation layer
  • At least one electrical cable consisting in the radial outer direction of:
  • hydraulic lines, electrical-hydraulic lines, electrical cables, optical data line, and outer load-bearing elements are twisted in one direction; and the inner load- bearing elements are twisted in the opposite direction; and where the wrapped complementary electrical insulation layer has the dielectric strength more than 5kV.
  • the wrapped complementary electrical insulation layer must have adielectric strength more than 5kV. It can consist of a wound electrical insulating tape (e.g. a paper tape, kapton tape, MICA tape (a combination of paper and mica), mica tape) from 0.1 to 0.35 mm thickness. Each layer overlaps the previous one by 40 to 60% to form a compact wrapped complementary electrical insulation layer, which supplements the electrical insulation capacity of the primary extruded electrical insulation layer.
  • a wound electrical insulating tape e.g. a paper tape, kapton tape, MICA tape (a combination of paper and mica), mica tape
  • the extruded electrical insulation layer consists of an extruded plastic material (thermoplastics, EPE PE, XLPE and the like).
  • the thickness of the extruded layer depends on the desired value of the operating voltage and required electrical insulation strength of the electrical cable.
  • a and B For both types of transfer line (A and B), in order to operate plasma equipment, at least one level of electrical energy, but ideally two or even three are required. These are: power supply for plasma generation; power supply for support systems; and power supply for generation of plasma forming medium, respectively.
  • the plasma equipment is powered by direct current (DC). Accordingly, it is necessary to use two independent mutually insulated electrical cables representing positive and negative potential. For each of the cited electrical lines, so that summarily two, four or even six electrical cables are required. In certain cases, each pair of cables can transmit current, ranging from 50A DC to 550A DC and having a minimal voltage loss. This design reduces the surface tension and the amount of thermal energy generated in the conductors. In order to achieve said requirement a relatively large cross-sectional area of conductor (from 20 to 1050 mm 2 ) is used.
  • the electrical cable comprises an electrical conductor shrouded with a wrapped complementary electrical insulation layer and subsequently with an extruded electrical insulation layer.
  • the electrical conductors can be in the form of: • A braid (for types A and B), wherein the braid is positioned around another element, e.g. a hydraulic line and separated from it by a wrapped complementary electrical insulation layer.
  • the conductor can also be made up of multiple layers of braid, depending on the desired cross-section.
  • the braid can be of copper stranded construction.
  • a core for type B only
  • the core can be solid or composed of several segments, or thin wires wound into a spiral.
  • up to 50% of the copper fibres of the braid can be replaced by steel fibres. This has the advantage of increasing of the overal load-bearing capacity and also giving a slight reduction in weight, whilst maintaining the electrical performance of the conductor.
  • a braided conductor transmits voltages with higher frequencies more effectively (skin effect) than a single core electrical conductor.
  • one electrical cable can be integrated into the inner load-bearing and protective jacket so that the electrical cable is formed by one or more electrical conductors (so-called complementary electrical conductors), wherein these conductors replace the individual load-bearing elements of the inner load-bearing and protective jacket so that a minimum required cross-section of the power line is complied with.
  • electrical conductors are made of copper and are of a flat rectangular cross-sectionton to give a homogeneous surface and the greatest mechanical strength.
  • these additional electrical conductors can have identical dimensions as the load-bearing elements that they replace.
  • the inner space of transfer line can comprise two additional electrical cables with a conductor in the form of a core. They can serve as a complementary direct current supply.
  • the greatest portion of the total weight of the transfer line (for both types A and B) is made up of power lines. Although, a substantial portion of the total weight also comes from reinforcement protection (load-bearing elements), and from the tubes for transferring the various types of hydraulic fluids (hydraulic lines).
  • the principal load-bearing element of the transfer line (for both types A and B) is the load- bearing and protective jacket, which supports the greatest portion of the total weight of the transfer line.
  • the load-bearing and protective jacket consists of steel load-bearing elements made of highly ductile materials having a mechanical strength more than1.0x 10 6 N-m/kg, and are preferably surface-treated with a galvanic coating resistant to the chemical and thermal effects of the environment.
  • the load-bearing and protective jacket consists of two layers:
  • An outer load-bearing and protective jacket is designed for merely protective and load- bearing function
  • An inner load-bearing and protective jacket that in addition to protective and load- bearing function can also serve for transmission of electrical energy by replacing certain elements with electrical conductors, as already mentioned above.
  • the number of elements of the inner and outer protective and load-bearing jacket varies from 10 to 108 and their amount is independent from each other.
  • the outer load-bearing and protective jacket is supplemented with an outer electrical insulation and waterproof layer.
  • the outer electrical insulation and protective layer prevents contact between the conductive parts of the transfer line and the walls of the bore hole. It also provides protection of the transfer line against leakage of the hydraulic medium into the borehole environment as well as from borehole environment to the transfer line structure.
  • a dominant portion of the transfer line according to the invention are filled with a set of hydraulic or electrical-hydraulic transfer lines. There is an electrical insulation layer separating the hydraulic line from the conductor portion.
  • each hydraulic line consists of a chemically resistant and high-tensile tube that can be made of an iron alloy (steel), of a steel-braided Teflon, or a PTFE (polytetrafluoroethylene) steel-braid tube.
  • steel steel
  • Teflon steel-braided Teflon
  • PTFE polytetrafluoroethylene
  • the wall thickness of an individual hydraulic lines depend on the material used and the application (temperature, pressure, flow):
  • Plastic tubes Teflon, XLPE, etc.
  • the wall thickness ranges from 1 m up to 3 mm.
  • Metal tubes (inkonel, stainless steel, etc.) having the wall thickness of 1 mm or more are more suitable for the use at higher pressures.
  • Diameters of the individual tubes depend on the type, volume, and pressure of the supplied fluid. In order to determine them correctly, it is nesessary to define a required pressure loss for the entire transfer line. In this case, the dimensions of the inner diameter of the tubes range from 8 mm up to 50 mm.
  • the electrical hydraulic line consists of a hydraulic line with one or more electrical cables with the conductors in the form of a braid axially positioned around it.
  • An extruded electrical insulation layer is provided between the hydraulic line and the electrical cable as well as between the individual electrical cables.
  • second hydraulic line having a smaller diameter and is positioned along the axis of the first hydraulic line. Its position is controlled by means of position limiters.
  • the diameter of the inner tube can range from 20% to 75% of the diameter of the outer tube.
  • the position limiter is made of plastic (Teflon, polyethylene, expanded polyethylene (EPE), cross-linked polyethylene (XLPE), etc.). It is positioned around the inner metal tube (FO protective cover, metal tubes). It runs continuously along the outer surface of the tube for the entire length of the inner portion of the line.
  • the optical data communication line comprises two or more optical fibres and can be housed:
  • a geometrically individual line having a gel protective filler between the optical fibres to provide protection of optical fibres from damage by hydrogen or oxygen.
  • a metal protector which can be, for example, an inconel tube (a steel tube made of the austenitic nickel-chromium superalloy family having oxidation- corrosion resistance in extreme pressure and thermal environments), or a stainless- steel tube, etc.
  • a plastic protective layer which can be, for example, made of Teflon, XLPE, or another polymer, defined within the required thermal requirements of the addressed solution.
  • the geometrically separated optical data line can be positioned in the axis of the hydraulic line by means of the position limiter (type A) or within the inner space of the transfer line (type B).
  • single mode optical fibres are most suitable. Two or more single-mode optical fibres are necessary for data transmission.
  • One optical fibre can be integrated separately into the braid of some of the electrical conductors in order to check mechanical performance and tension in real time.
  • the space between the individual lines in the inner space of type B hybrid transfer line is filled with a plastic electrical insulation material allowing the individual lines to move during bending.
  • the inner load-bearing elements are twisted in one direction and the outer load-bearing elements are twisted in the opposite direction.
  • the inner load-bearing elements (including integrated electrical conductors) are twisted, wherin the spiral angel is from 5° to 10° (preferably 7°) in the clockwise direction.
  • the outer load-bearing elements are twisted, wherin the spiral angel is from 5° to 10° (preferably 7°) in the counter-clockwise direction. Wherein the angle 7° is 0.5 revolution per meter.
  • the hydraulic lines, electricalhydraulic lines, electrical cables, optic data lines and the outer load-bearing elements (24) are twisted in one direction; and the load-bearing elements (22) of the inner load-bearing and protective jacket are twisted in the opposite direction.
  • the preferred format is that all inner power and data lines (hydraulic lines, electrical hydraulic lines, electrical cables and optical data lines) are twisted at an spiral angle from 10° to 14° (preferably 11 °) in the clockwise direction.
  • the inner load-bearing elements (including integrated electrical conductors) are twisted at an spiral angle from 5° to 10° (preferably 7°) in the counter-clockwise direction (in the opposite direction with resect to the inner power and data lines).
  • the outer load-bearing elements are twisted at an spiral angle from 5° to 10° (preferably 7°) in the clockwise direction.
  • the transfer line according to the invention is connected to infrastructure on the surface by means of a connector.
  • the other end of the transfer line is connected to plasma equipment by means of another connector.
  • Fig. 1 is a cross-sectional view of an electrical hydraulic hybrid transfer line of type A having one hydraulic line, one power line (a pair of electrical cables), optical data line and load-bearing elements.
  • Fig. 2 is a cross-sectional view of an electrical hydraulic hybrid transfer line of type A having two hydraulic lines, three power lines (three pairs of electrical cables), optical data line and load-bearing elements.
  • Fig. 3 is a cross-sectional view of an electrical hydraulic hybrid transfer line of type B having one power line (a pair of electrical cables), optical data line and load-bearing elements.
  • Fig. 4 is a cross-sectional view of an electrical hydraulic hybrid transfer line of type B having two power lines (two pairs of electrical cables), optical data line and load-bearing elements.
  • Fig. 5 is a cross-sectional view of an electrical hydraulic hybrid transfer line of type B having three power lines (three pairs of electrical cables), optical data line and load-bearing elements.
  • Fig. 6a illustrates in detail an electrical cable having a conductor in the form of a braid.
  • Fig. 6b illustrates in detail an electrical cable having a conductor in the form of core.
  • Fig. 7 illustrates in detail a hydraulic line.
  • Fig. 8 illustrates in detail an electrical hydraulic transfer line.
  • Fig. 9 illustrates in detail an optical data transmission line.
  • Fig. 10a illustrates in detail a load-bearing and protective jacket with load-bearing elements.
  • Fig. 10b illustrates in detail a load-bearing and protective jacket with load-bearing elements and with complementary electrical conductors replacing certain inner load-bearing elements.
  • Fig. 11 is a perspective view of an electrical hydraulic hybrid transfer line of type B.
  • Fig. 12 shows positioning of a transfer line in a borehole.
  • Fig. 1 illustrates a hybrid transfer line 19 of type A comprising a tube 5 made of PTFE and a steel braid (not shown), shrouded with an extruded electrical insulation layer 9.
  • the tube 5 shrouded with the extruded electrical insulation layer 9 forms together a hydraulic line (as shown on Fig. 7).
  • the hydraulic line is in the radial outward direction shrouded with a wrapped complementary electrical insulation layer 10 and subsequently with one electrical line that consists of two electrical cables separated by a wrapped complementary electrical insulation layer 10.
  • Each electrical cable is formed by the following layers: an electrical conductor 4a in the form of a braid, a wrapped complementary electrical insulation layer 10 and an extruded electrical insulation layer 9.
  • the electrical hydraulic line is further shrouded with a wrapped complementary electrical insulation layer 10 and subsequently with an inner load-bearing and protective jacket 3, which consists of 108 inner load-bearing elements 22.
  • an inner load-bearing and protective jacket 3 On the inner load-bearing and protective jacket 3 is mounted in the radial outward direction an outer load-bearing and protective jacket 2, consisting of 36 outer load-bearing elements 24.
  • the outer load-bearing and protective jacket 2_ is subsequently shrouded with a wrapped complementary electrical insulation layer 10 and further with an outer extruded electrical insulation protective layer 1
  • An optical data line 8 is positioned in the axis of the hydraulic line by means of a position limiter 16 as a separate geometric unit.
  • the optical data line 8 comprises two optical fibres 13, positioned in a gel protective filling compound 12 and shrouded with an inconel protector 14 and subsequently shrouded with a protective Teflon layer 15.
  • the wrapped complementary electrical insulation layer 10 is formed by a kapton electrical insulation tape with the thickness of 0.35 mm, each layer overlapping the previous one by 40%.
  • the thickness ofthe wrapped complementary electrical insulation layer is 0.5 mm.
  • the extruded electrical insulation layer 9 is made of XLPE and its thickness is 1.3 mm.
  • the inner diameter of the tube 5 is 46 mm, the thickness of the wall is 2 mm.
  • the electrical conductor 4a in the form of a braid has the cross-sectional area of 240 mm 2 .
  • the overall external cross-section is 4183.265 mm 2 and the diameter of such hybrid transfer line is 73 mm.
  • Fig. 2 illustrates a hybrid transfer line 19 of type A capable of transferring one or two different media (2x 601/min) and of supplying three levels of electrical energy.
  • the hybrid transfer line 19 comprises a tube 5 made of an iron alloy shrouded with an extruded electrical insulation layer 9.
  • the tube 5 shrouded with an extruded electrical insulation layer 9 forms together a hydraulic line.
  • the hydraulic line is in the radial outward direction shrouded with a wrapped complementary electrical insulation layer 10 and subsequently with five electrical cables.
  • Each electrical cable is formed by an electrical conductor 4a_in the form of a braid, a wrapped complementary electrical insulation layer 10 and subsequently shrouded with an extruded electrical insulation layer 9.
  • the individual cables are further separeted from each other by a wrapped complementary electrical insulation layer 10.
  • Said unit is further shrouded with a wrapped complementary electrical insulation layer 10 and subsequently with an inner load-bearing and protective jacket 3, consisting of 18 inner load- bearing elements 22 and 18 complementary electrical conductors 23, arranged alternately.
  • the outer lead-bearing and protective jacket 2 is positioned around the inner load-bearing and protective jacket 3.
  • the outer load-bearing and protective jacket 2_ is further shrouded with wrapped complementary electrical insulation layer 10 and subsequently with an outer extruded electrical insulation protective layer 1
  • An optical data line is integrated into the braid of the fifth cable (in the radial outward direction) and is formed by eight optical fibres 13 spaced in the braid at regular intervals.
  • Another hydraulic line having a smaller diameter is formed by a tube 5a made of PTFE having a steel braid shrouded with an extruded electrical insulation layer 9 is positioned in the axis of the hydraulic line by means of a position limiter 16.
  • the diameter of the inner tube is equivalent to 25% of the diameter of the outer tube.
  • the wrapped complementary electrical insulation layer 10 is formed by a MICA electrical insulation tape of the thickness of 0.25mm each layer overlapping the previous by 50%.
  • the thickness of the wrapped complementary electrical insulation layer is 0.5 mm.
  • the extruded electrical insulation layer 9 is made of TPPE (thermoplastic polyethylene) and its thickness is 1.3 mm.
  • a tube 5 has an inner diameter of 30 mm and a wall thickness of 1.6 mm.
  • a tube 5a has an inner diameter of 10 mm and a wall thickness of 1.5 mm.
  • the electrical conductor 4a in the form of a braid has a cross-sectional area of 200 mm 2 .
  • the overall cross-sectional area of the complementary electrical conductors 23 is 160 mm 2 .
  • the overall outer cross-section is 4183,265 mm 2 and the diameter of such hybrid transfer line is 73 mm.
  • Fig. 3 illustrates a hybrid transfer line 25 of type B, a system with three hydraulic lines capable of transferring between one and three media (3x 601/min) and of supplying one level of electrical energy.
  • the transfer line comprises in the radial inward direction an outer electrical insulation protective layer 1, under which lies a wrapped complementary electrical insulation layer 10,. which is around an outer load-bearing and protective jacket 2 consisting of 36 outer load-bearing elements 24 (not shown). Under this lies an inner load-bearing and protective jacket 3 consisting of ten inner load-bearing elements 22. (not shown), which is insulated from the inner space of the transfer line of the circular cross-section by means of a wrapped complementary electrical insulation layer 10 and subsequently by an extruded electrical insulation layer 9.
  • This inner space is filled with an electrical insulation filler material X ⁇ _, in which three parallel hydraulic lines 2L consisting of a tube 5 shrouded with an extruded electrical insulation layer 9 (as shown on Fig. 7) are positioned.
  • Two of the hydraulic lines 21. are further shrouded with a wrapped complementary electrical insulation layer 10, one electrical cable 7 being axially positioned on each of them.
  • Each electrical cable comprises an electrical conductor in the form of a braid having a cross-sectional area of 180 mm 2 , having a wrapped complementary electrical insulation layer axially positioned around it, and having an extruded electrical insulation layer of the thickness of 1.3 mm (not shown) positioned axially.
  • two electrical hydraulic hybrid lines 6 (as shown on Fig. 8) are formed.
  • optical data line 8 in the inner space of the transfer line.
  • the optical data line comprises in the radial inward direction a protective Teflon layer 15 having the diameter of 10 mm, under which there is an inconel protector 14 having the outer diameter of 6 mm, the wall thickness of 1 mm, comprising a gel protective filling compound 12, with two optical fibres 13 (as shown on Fig. 9) are positioned within.
  • the hydraulic line 21., electrical hydraulic lines 6 and optical data line 8 are twisted in the clockwise direction at an angle of 14°; the load-bearing elements of the inner load-bearing and protective jacket are twisted in the counter-clockwise direction at an angle of 10°; and the load- bearing elements of the outer load-bearing and protective jacket are twisted in the clockwise direction at an angle of 10°.
  • All three tubes 5 are made of Teflon with a steel braid. Two tubes have inner diameters of 19mm, and wall thickness of 1.5mm. The third tube has an inner diameter of 23mm, and a wall thickness of 1.5mm.
  • the wrapped complementary electrical insulation layer 10 is formed by a mica electrical insulation tape with a thickness of 0.35mm each layer overlapping the previous by 40%.
  • the thickness of the wrapped complementary electrical insulation layer is 0.7mm.
  • the thickness of the outer extruded electrical insulation and protective layer is 2.5 mm.
  • the overall outer cross-section is 4183,265 mm 2 and the diameter of such hybrid transfer line is 73 mm.
  • Fig. 4 illustrates an electrical hydraulic hybrid transfer line 25 of type B, a system with three hydraulic lines, capable of transferring one to three media (3x 60l/min) and of supplying two levels of electrical energy
  • the transfer line comprises in the radial inward direction an outer extruded electrical insulation and protective layer , with a wrapped complementary electrical insulation layer 10 underneath it.
  • This surrounds an outer load-bearing and protective jacket 2_consisting of 36 outer load- bearing elements 24 (not shown), with a load-bearing and protective jacket 3 inside it and consisting of 88 inner load-bearing elements 22 and 20 complementary electrical conductors 23.
  • the inner load-bearing and protective jacket 3 is insulated from the inner space of the transfer line of circular cross-section by means of the wrapped complementary electrical insulation layer 10 and subsequently with the extruded electrical insulation layer 9.
  • This inner space is filled with an electrical insulation filler material 11_, with three hydraulic lines 21 having identical diameter positioned in equidistant and consisting of a tube 5, shrouded with an extruded electrical insulation layer 9 (as shown on Fig. 7). All three hydraulic lines 21. are further shrouded with a wrapped complementary electrical insulation layer 10, one electrical cable 7 positioned axially around each of them.
  • Each electrical cable 7 comprises an electrical conductor in the form of a braid with a wrapped complementary electrical insulation layer axially positioned around it, with an extruded electrical insulation layer (not shown) axially positioned on the latter.
  • three electrical hydraulic lines 6 are formed.
  • optical data line 8 in the inner space of the transfer line.
  • the optical data line 8 comprises in the radial inward direction a protective Teflon layer 15, with an inconel protector 14 beneath it, comprising a gel protective filling compound 12, with six optical fibres 13 (as shown on Fig. 9) positioned within.
  • the electrical hydraulic hybrid lines 6 and the optical data line 8_ are twisted at an angle of 10° in the clockwise direction, the inner load-bearing elements 22, as well as the wrapped electrical conductors are twisted at an angle of 5° in the counter-clockwise directionand the load-bearing elements of the outer load-bearing and protective jacket are twisted at an angle of 5° in the clockwise direction.
  • All three tubes 5 are made of PTFE with a steel braid protection.
  • the wrapped complementary electrical insulation layer 10 is formed by a kapton electrical insulation tape with the thickness of 0.1 mm each layer overlapping the previous by 60%.
  • Fig. 5 illustrates an electrical hydraulic hybrid transfer line 25 of type B, a system with three hydraulic lines capable of transferring one to three media (3x 60l/min) and supplying three levels of electrical energy.
  • the transfer line comprises in the inward radial direction an outer extruded electrical insulation and protective layer 1 with a wrapped complementary electrical insulation layer 10 positioned beneath it, the latter being positioned around an outer load-bearing and protective jacket 2 consisting of 36 load-bearing elements 24. with an inner load-bearing and protective jacket 3 positioned beneath, consisting of 18 inner load-bearing elements 22 and 18 complementary electrical conductors 23 arranged alternately.
  • the inner load-bearing and protective jacket 3 is insulated from the inner space of the transfer line having a circular cross-section by means of a wrapped complementary electrical insulation layer 10 and followingly with an extruded electrical insulation layer 9.
  • the inner space is filled with an electrical insulation filler material 11_, in which three hydraulic lines 21 arepositioned equidistant, having identical diameters, the lines consisting of a tube 5, shrouded with an extruded electrical insulation layer 9 (as shown on Fig. 7). All three hydraulic lines are further shrouded with a wrapped complementary electrical insulation layer 10, with an electrical cable 7 axially positioned around it.
  • Each electrical cable 7 comprises an electrical conductor 4a wound in the form of a braid with a wrapped complementary electrical insulation layer 10 axially positioned around, and with an extruded electrical insulation layer 9 (as shown on Fig. 6a) axially positioned on the latter.
  • three electrical hydraulic hybrid lines 6 are formed.
  • Each electrical cable 7 comprises an electrical conductor 4b in the form of a copper core having a cross-sectional area of 50 mm 2 with a wrapped complementary electrical insulation layer 10 axially positioned on and subsequently also an extruded electrical insulation layer 9_with the thickness of 2 mm.
  • optical data line 8 in the inner space of the transfer line.
  • the optical data line 8 comprises in the radial inward direction a protective Teflon layer 15, with an inconel protector 14 underneath it, comprising a gel protective filling compound 12, in which eight optical fibres 13 (as shown on Fig. 9) are positioned within.
  • the electrical hydraulic hybrid lines 6, electrical cables 7 and optical data lines 8 are twisted at an spiral angle of 11 ° in the clockwise direction, the inner load-bearing elements 22 are twisted at an spiral angle of 7° in the counter-clockwise direction and the outer load-bearing elements 24 are twisted at an spiral angle of 7° in the clockwise direction.
  • All three tubes 5 are made of an iron alloy.
  • the wrapped complementary electrical insulation layer 10 is formed by a MICA electrical insulation tape with the thickness of 0.25 mm having 50% overlap of the layers.
  • FIG. 6a illustrates a detail of an electrical cable 7.
  • the electrical cable 7 consists of an electrical conductor 4a in the form of a braid with a wrapped complementary electrical insulation layer 10 positioned axially around it and subsequently with an extruded electrical insulation layer 9.
  • FIG. 6b illustrates a detail of an electrical cable 7.
  • the electrical cable 7 consists of an electrical conductor 4b in the form of a copper core with a wrapped complementary electrical insulation layer 10 positioned axially around it, and subsequently with an extruded electrical insulation layer 9.
  • Fig. 7 illustrates a hydraulic line 21. comprising a tube 5 shrouded with an extruded electrical insulation layer 9.
  • Fig. 8 illustrates an electrical hydraulic line 6.
  • the line comprises a tube 5 shrouded with an extruded electrical insulation layer 9.
  • the tube 5 with the extruded electrical insulation layer 9 represents the hydraulic line.
  • the hydraulic line is futher enclosed with a wrapped complementary eletrical insulation layer 10 and with an electrical cable axially positioned around it.
  • the electrical cable consists in the outward radial direction of an electrical conductor 4_in the form of a braid, a complementary eletrical insulation layer 10 and an extruded electrical insulation layer 9.
  • Figure 9 illustrates an optical data line 8.
  • the optical data line 8 comprises eight optical fibres 13. positioned in a gel protective filling compound 12 and shrouded with a stainless-steel protector 14 having an inner diameter of 4 mm, and a wall thicnkess of 0.5 mm.
  • the whole unit is shrouded with a Teflon layer 15 with a wall thickness of 2.5 mm.
  • Figure 10a illustrates top six layers of a hybrid transfer line (types A and B). In the radial outward direction, it is arranged an extruded electrical insulation layer 9 with a wrapped complementary electrical insulation layer 10 positioned around it. Further there is a load- bearing and protective jacket, consisting of an inner load-bearing and protective jacket 3_on which an outer load-bearing and protective jacket 2 is arranged.
  • the inner load-bearing and protective jacket 3_ consists of 36 inner load-bearing elements 22, arranged tightly, side by side around the circumference of the line.
  • the outer load-bearing and protective jacket 2_ consists of 36 outer load-bearing elements 24, arranged tightly, side by side around the circumference of the line.
  • a wrapped complementary electrical insulation layer 10 is arranged on the load- bearing and protective jacket and subsequently an outer electrical insulation layer 1
  • Figure 10b illustrates six top layers of a hybrid transfer line (types A and B), this is the same as the concept illustrated in Figure 10a, with the exception that each other inner load-bearing element 22 is replaced by a complementary electrical conductor 23.
  • Figure 11 illustrates a cross-section of a hybrid transfer line 25 of type B in a perspective view showing the twisting of individual layers (conductors, carrying elements, fillers).
  • Figure 12 illustrates a hybrid transfer line 19 in a borehole.
  • the hybrid transfer line 19 is positioned in a pumping tube (borehole tube) 18 and connects the surface infrastructure 17 with the plasma equipment 20 positioned in the borehole.
  • a device for the transfer of fluid and electrical energies in a borehole according to the invention may be utilized in the mining and extraction industry, in the petroleum industry at operations serving to decommission installations and/or in the drilling industry, e.g. in the field of geothermal drilling.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Communication Cables (AREA)
  • Insulated Conductors (AREA)

Abstract

L'invention concerne une ligne de transfert hybride d'équipement à plasma qui comprend dans la direction radiale vers l'extérieur des couches/composants suivants, respectivement : un tube (5) recouvert d'une couche d'isolation électrique (9), qui forme ensemble une ligne hydraulique, une couche d'isolation électrique complémentaire (10), au moins un câble électrique (7), qui, dans la direction radiale vers l'extérieur, est constitué : d'un conducteur électrique (4a) sous la forme d'une tresse ; d'une couche d'isolation électrique complémentaire (10), d'une couche d'isolation électrique extrudée (9) ; d'une couche d'isolation électrique complémentaire (10) ; d'une gaine de protection et de support de charge interne (3) constituée des éléments de support de charge (22) d'une gaine de protection et de support de charge interne ayant une résistance mécanique supérieure à 1,0x106 N-m/kg, une gaine de protection et de support de charge externe (2) constituée des éléments de support de charge (24) de la gaine de protection et de support de charge externe ayant une résistance mécanique supérieure à 1,0x106 N-m/kg, une couche d'isolation électrique complémentaire enroulée (10), une couche de protection d'isolation électrique externe (1) ; la ligne de transfert comprenant en outre au moins une ligne de données optiques (8) et au moins un autre câble électrique, les éléments de support de charge (22) de la gaine de protection et de support de charge interne étant torsadés dans une direction ; et les éléments de support de charge (24) de la gaine de protection et de support de charge externe étant torsadées dans la direction opposée et la couche d'isolation électrique complémentaire enroulée (10) ayant une résistance diélectrique supérieure à 5 kV.
PCT/SK2019/050014 2018-12-04 2019-12-04 Ligne de transfert hybride pour équipement à plasma Ceased WO2020117132A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SK50128-2018U SK8671Y1 (sk) 2018-12-04 2018-12-04 Hybridné prenosové vedenie pre plazmové zariadenie
SKPUV50128-2018 2018-12-04

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WO2020117132A4 WO2020117132A4 (fr) 2020-07-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025097206A1 (fr) * 2023-11-06 2025-05-15 ELM Global PTE LTD Ensemble tuyaux hydrauliques

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1594702A (en) * 1977-09-06 1981-08-05 Standard Telephones Cables Ltd Armoured cables
US4476923A (en) * 1980-07-21 1984-10-16 Walling John B Flexible tubing production system for well installation
US7798234B2 (en) * 2005-11-18 2010-09-21 Shell Oil Company Umbilical assembly, subsea system, and methods of use
US20120168199A1 (en) * 2009-07-16 2012-07-05 Mccullough Colin Submersible composite cable and methods
CN106356118A (zh) * 2016-11-09 2017-01-25 凌卫康 一种三网合一用供水管道
WO2018145736A1 (fr) * 2017-02-08 2018-08-16 Prysmian S.P.A. Câble ou tuyau flexible comportant des éléments de traction améliorés

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1594702A (en) * 1977-09-06 1981-08-05 Standard Telephones Cables Ltd Armoured cables
US4476923A (en) * 1980-07-21 1984-10-16 Walling John B Flexible tubing production system for well installation
US7798234B2 (en) * 2005-11-18 2010-09-21 Shell Oil Company Umbilical assembly, subsea system, and methods of use
US20120168199A1 (en) * 2009-07-16 2012-07-05 Mccullough Colin Submersible composite cable and methods
CN106356118A (zh) * 2016-11-09 2017-01-25 凌卫康 一种三网合一用供水管道
WO2018145736A1 (fr) * 2017-02-08 2018-08-16 Prysmian S.P.A. Câble ou tuyau flexible comportant des éléments de traction améliorés

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025097206A1 (fr) * 2023-11-06 2025-05-15 ELM Global PTE LTD Ensemble tuyaux hydrauliques

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WO2020117132A4 (fr) 2020-07-16
SK501282018U1 (sk) 2019-08-05
SK8671Y1 (sk) 2020-02-04

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