WO2016145494A1 - Bundled coils and bundled assemblies - Google Patents
Bundled coils and bundled assemblies Download PDFInfo
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- WO2016145494A1 WO2016145494A1 PCT/AU2016/050193 AU2016050193W WO2016145494A1 WO 2016145494 A1 WO2016145494 A1 WO 2016145494A1 AU 2016050193 W AU2016050193 W AU 2016050193W WO 2016145494 A1 WO2016145494 A1 WO 2016145494A1
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- bundled
- bundled assembly
- assembly
- cable
- pipe
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- 230000000712 assembly Effects 0.000 title description 13
- 238000004891 communication Methods 0.000 claims abstract description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims description 15
- 239000002699 waste material Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 42
- 229920001903 high density polyethylene Polymers 0.000 description 15
- 239000004700 high-density polyethylene Substances 0.000 description 15
- 125000006850 spacer group Chemical group 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 239000004698 Polyethylene Substances 0.000 description 7
- 229920000573 polyethylene Polymers 0.000 description 7
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- 238000010926 purge Methods 0.000 description 3
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- 230000001681 protective effect Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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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
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/22—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals
- F16L3/23—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals for a bundle of pipes or a plurality of pipes placed side by side in contact with each other
- F16L3/233—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets specially adapted for supporting a number of parallel pipes at intervals for a bundle of pipes or a plurality of pipes placed side by side in contact with each other by means of a flexible band
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/04—Protective tubing or conduits, e.g. cable ladders or cable troughs
- H02G3/0462—Tubings, i.e. having a closed section
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/0433—Clamping or clipping connections for rods or tubes being in parallel relationship
Abstract
A bundled assembly (710) of two pipes (118, 120), a power cable (116) and a communication cable (114), suitable for coiling into large coils is described. The large coils are suited to transporting and uncoiling in remote sites. The bundled assembly (710) may have a gas pipe (118) and a water and waste pipe (120). The communications cable (114) may be located in an oversized ducting (112) to aid in coiling and uncoiling. Further ducting (526) may be used to aid in locating and separating the components of the bundled assembly (710). Straps (722), bands or a sheath may be used to bind together the bundled assembly (710).
Description
BUNDLED COILS AND BUNDLED ASSEMBLIES.
BACKGROUND OF THE INVENTION
1. Field of the Invention
[0001] The present invention relates to plastic pressure pipes for gas and water as well as plastic conduit or pipe for electrical supply or services and
communications for industrial applications. In particular bundled pipe and conduit that may be in coiled lengths of 100 to 1000 m or greater. The plastic pressure pipe may be of polyethylene (PE).
[0002] The invention may be applied to the oil and gas industry and in particular the coal seam gas (CSG) industry.
2. Description of the Art
[0003] There are various known methods, assemblies, arrangements and constructions for the collection of coal seam gas. Collection of coal seam gas on land typically requires a network of small wells, well pads or otherwise upstream gathering system to be linked together. The product gas from each well or well pad is usually piped to a remote processing location via a network of gas pipes. Services to each well or well pad are typically provided to operate the well or well pad as well as operating the collection network for the gas.
[0004] None of these prior art methods, apparatus and / or assemblies provides an entirely satisfactory solution to the provision of services and delivery of product gas in a safe, efficient and economic manner.
[0005] Any reference herein to known prior art does not, unless the contrary indication appears, constitute an admission that such prior art is commonly known by those skilled in the art to which the invention relates, at the priority date of this application.
SUMMARY OF THE INVENTION
[0006] The present invention aims to provide alternative methods, apparatuses and / or assemblies which overcomes or ameliorates the disadvantages of the prior art, or at least provides a useful choice.
[0007] In one form, the invention provides a bundled assembly including: a gas pipe, a water pipe, a power cable, a communication cable, and a means for bundling the bundled assembly; wherein the means for bundling includes at least one of straps, bands and a sheath to bind together the gas pipe, the water pipe, the power cable and the communication cable to form the bundled assembly.
[0008] The means for bundling further includes an oversized ducting to sleeve the communication cable in the bundled assembly. The means for bundling also further includes isolating at least two of the gas pipe, the water pipe, the power cable and the communication cable from each other.
[0009] In another form, the invention provides a coiled bundled assembly comprising: a bundled assembly including a gas pipe, a water pipe, a power cable and a communication cable; and a means for bundling the bundled assembly; wherein a lead-in end of the coiled bundled assembly protrudes from the coiled bundled assembly.
[0010] The bundled assembly of the coil includes an oversized ducting to sleeve the communication cable.
[0011] In yet another form, the invention provides a method of coiling a bundled assembly, including the steps of: providing the bundled assembly
components of: a gas pipe, a water pipe, a power cable and a communication cable; configuring or arranging the bundled assembly components; binding the bundled assembly; and coiling the bundled assembly; wherein the configuring or arranging, binding and coiling steps provide a substantially undistorted bundled assembly when the bundled assembly is uncoiled.
[0012] The step of configuring or arranging includes the step of: sleeving the communication cable in an oversized duct.
[0013] The step of coiling includes the step of: extending the lead-in end of the bundled assembly out from a coiled bundled assembly.
[0014] In an alternate form, the invention provides a bundled assembly substantially as described herein with respect to figures 1 to 18.
[0015] In another alternate form, the invention provides a method of coiling a bundled assembly and providing a bundled coil substantially as described herein with respect to figures 19 to 25.
[0016] Further forms of the invention are as set out in the appended claims and as apparent from the description.
DISCLOSURE OF THE INVENTION
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The description is made with reference to the accompanying drawings, of which:
[0018] FIGURE 1 is a schematic of a perspective view of an end of a bundled assembly, the end showing the emerging conduits / pipes.
[0019] FIGURE 2 is a transverse cross- sectional view along lines 2-2 of the bundled assembly of FIGURE 1.
[0020] FIGURE 3 is a transverse cross- sectional view of an alternate bundled assembly with a sectional view of a high voltage cable.
[0021] FIGURE 4 is an alternative bundled assembly to FIGURES 2 and 3 where the HDPE gas and water pipes, are proportionally smaller in relation to an alternate, triangular high voltage cable and an alternate, triangular communication conduit or ducting.
[0022] FIGURE 5 is schematic of a perspective view of an alternative corrugated ducting or corrugated separator suitable for the communications cable and high voltage cable.
[0023] FIGURE 6 is a transverse cross- sectional view along lines 6-6 of the corrugated ducting in FIGURE 5.
[0024] FIGURES 7 to 9 are respective perspective, sectional and plan views of the alternate corrugated ducting of FIGURE 5 as used in another bundled assembly with strapping or bands.
[0025] FIGURES 10 to 12, 13 to 15 and 16 to 18 are examples of different bundling means to straps and bands to aid in forming the bundled assemblies.
[0026] FIGURES 19 to 21 show a bundled coil of a bundled assembly of FIGURES 1 to 4, 7 to 18 and 22. FIGURES 19, 20 and 21 are respective side and perspective views of the bundled coil.
[0027] FIGURES 23 to 25 are further schematics of the bundled coil shown in FIGURES 19 to 22. FIGURES 24 and 25 are respective sectional views along lines A- A and B-B of FIGURE 23.
[0028] FIGURE 26 is a schematic photograph / drawing of the end of an actual prototype bundled assembly corresponding to the alternate bundled assembly of FIGURE 3.
[0029] In the figures the reference numerals are prefixed by the figure number. For example FIG 1 is the "100" series, FIG 2 is the "200" series and so on. In addition like features across figures may be indicated by like reference numerals, for example the communications conduit 112 of FIGURE 1 and the alternate, triangular
communications conduit 412 of FIGURE 4.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0030] The invention includes bundling service conduits or pipes of gas, water, waste by-product, high voltage electrical supply and / or communications together such that all the conduits may be installed in a single operation as a bundled assembly. The bundled assembly may be installed or laid in a trench in the ground as part of a network for a gas collection or gathering for example.
[0031] The bundled assembly may be coiled to form a bundled coil suitable for transport to a remote site for installation. The bundled assembly may be advantageously formed and / or configured in order to be coiled as a bundled coil that is readily transported to and installed at the remote site.
[0032] Alternatively the bundled assembly may also be formed at the remote site and laid directly in a trench for example.
Bundled Assembly:
[0033] FIGURE 1 is a perspective view of an end of a bundled assembly 110, the end showing the emerging conduits / pipes. The multiple conduits include a High Density Polyethylene (HDPE) pipe for water, a HDPE pipe for gas, a high voltage electrical cable and a fibre optic communications cable. A conduit 112 is shown in FIGURE 1 into which a fibre optic communications cable 114 may be inserted. The material or design of the communications conduit 112 may be less stringent than the other conduits but may typically be HDPE in order to match the properties, (thermal expansion, Modulus etc.) of the other conduits. The fibre optic cable 114 for a communication line may be used to eliminate or reduce any interference to other communication cable types that may be caused by the close proximity to a high voltage power cable 116, e.g. electrical signal cable. The communications cable 114 or services may also include suitable electrical communication cable or elements as well for communication with and / or control with a well, well pad or network operation. For the communication cable 114 the conduit or ducting 112 may also provide a protective sheathing to the cable 114 as well as other functions as described below.
[0034] The high voltage power cable 116 may be selected and supplied in accordance with the local regulations and design specifications for the power supply needs of the gathering network. The dimensions of the high voltage cable 116 may also be constructed or selected to enable the correct profile of the bundled assembly as described further below. The high voltage electrical cable 116 may be a three phase cable carrying a high voltage of more than lkV. For the electrical conduit about the high voltage conductors the electrical conduit may be a standard or specially produced with screening, insulation and protective coating as suitable for the voltage carried by the electrical cable and the number of conductors. A three phase high voltage cable 116 may have three conductors with standard or custom conduit or sheath as described below with respect to FIGURE 3.
[0035] Adjacent gas 118 and water 120 pipes are shown in FIGURE 1. The water pipe 120 may carry water, fracking fluids as well as other liquid or solid phases by-products or waste extracted with the gas and separated at the well. These byproducts of the gas extraction may be transported in the water pipe 120 for recycling
and reprocessing elsewhere. The gas pipe 118 may be used to transport gas from the well or well pad through the gathering network to a processing and / or storage point. The gas 118 and water 120 pipes may be manufactured in accordance with relevant industrial standards, for Australia this may be AS/NZS4130. Typically the dimensions of the pipes 118, 120 may match the dimensions of the other conduits and cables in the bundled assembly 110 in order to produce a suitable form when bundled.
[0036] An outer sheathing 122 about the cable 114, 116, conduit 112 and pipes 118, 120 is shown in FIGURE 1. The purpose of the outer sheathing 122 may be to bind the bundle in the form shown, that is to provide a bundling means. In FIGURE 1 the outer sheathing is shown as a continuous sheath 122, which may be a continuous wrapped tape with no gaps, alternatively the sheath may be a co-extruded or otherwise formed about the assembly of cable, conduit and pipe. The sheath may be typically 1 to 2mm thick or as appropriate to bind the bundle and provide any protection necessary. The sheath may be made of polypropylene or other thermoplastic polymer plastic as a wrapping or tape, a co-extruded PVC or other co-extruded plastic or as selected by a person skilled in the art to be suitable for bundling. Alternatively the outer sheath may be circumferential non-continuous bands spaced typically 300mm to 1200mm apart as described in detail below with respect to FIGURES 7 to 18. In addition the sheath 122 or bands 722, 1022, 1322, 1622 may have associated with or impregnated within them an identification means such as written labelling or symbols, radio frequency identification (RFI) chips or the like which allow remote sensing. Wire traces and the like for remote sensing and identification of the bundled assembly 110 may be unsuitable for use due to induced currents and voltages from the high voltage cable 116.
[0037] FIGURE 2 is a transverse cross- sectional view along the lines 2-2 of the bundled assembly 110 of FIGURE 1. The suitable form of the configuration and the arrangement of the gas 118 and water 120 pipes with respect to the relatively smaller diameter communications conduit 112 and high voltage cable 116 is shown in FIGURE 2 and described further below.
[0038] Bundled Conduit products and Dimensions: Typically the bundled assembly may have two HDPE pipes 118, 120 of Nominal Outside Diameter, (DN), 125mm, one for gas 118 and one for water 120. For a DN125 HDPE size pipes, the
high voltage electrical cable 116 and the communications cable ducting / conduit 112 may be approximately 32mm outside diameter. In another example the two larger outside diameter the pipes may be DN 160mm with the proportional smaller outside diameter of the conduit 112 and power cable 116 being approximately 40mm.
[0039] Other DN that may be used for the gas and water pipes 118, 120 are 63, 250 and 300 mm. The appropriate smaller diameters for the conduit and high voltage cable may be selected as described herein for forming the bundled assembly. For example the DN of 63 mm for the gas and water pipes may require an outside diameter for the communication conduit and high voltage cable of approximately 16 mm.
[0040] Bundled Assembly Configuration: The configuration has two larger diameter pipes 118, 120 positioned side by side on a major horizontal axis between the two smaller diameter conduit 112 and cable 116. The communications ducting 112 and power cable 116 are aligned vertically on minor centre axis between the two larger diameter pipes 118, 120 and either side of the major horizontal axis. That is the adjacent larger diameter pipes 118, 120 may have parallel longitudinal axes and may be touching or in very close proximity to each other. Whilst the smaller diameter power cable and conduit 116, 112 may be separated along the vertical axis. The outside diameters of the pipe 118, 120, power cable 116 and conduit 112 may be selected such that the smaller diameter conduit 112 or power cable 116 do not protrude above or below the peripheral circumferential extents of the larger diameter pipe. The selection of the various diameters pipe, power cable and communications ducting 112 to form the desired transverse profile is shown in FIGURES 2 to 4, 8, 11, 14 and 17. As described further below, when the pipes 118, 120 conduit 112 and cable 116 are wrapped into a bundle assembly using either continuous or intermittent wrapping, the overall transverse cross-sectional shape of the bundle assembly 110 may then resemble a rectangle with radiused ends. This transverse configuration of the bundled assembly 110 has particular advantages to the forming of bundled coils that are compact, layered and stable as described below with respect to FIGURES 19, 20 and 21.
[0041] A wall thickness of the HDPE pipe 118, 120 may be in accordance with AS/NZS4130 and may be expressed in terms of the Standard Diameter Ratio,
(SDR), which is the Nominal Diameter (DN) of the pipe divided by the minimum allowed wall thickness (tmin). Typical SDR values for an application to coal seam gas gathering networks may be 9, 11, 13.6, 17, and 21. The larger the SDR number the thinner the pipe wall thickness.
[0042] Isolations for maintenance: A key hazard relating to gathering and services networks may be maintenance on the individual services which are located in close proximity, typically a single trench. Since all the supply services and gas product are a single unit of a bundled assembly then maintenance on any one of the services or product, particularly the gas or water pipes may be done by isolating a particular length of the bundled assembly in a gathering or collection network. The isolation for example may involve isolating the electrical power, then depressurising and inert gas purging of the gas pipe between "break out" or junction points in the network of bundled assemblies. Such isolation of a length of the network of bundled assemblies may be done without affecting other areas of the gathering network, depending on the layout design of the gathering network.
[0043] FIGURE 3 is a transverse cross- sectional view of an alternate bundled assembly 310 with a sectional view of a high voltage power cable 316. The high voltage cable 316 has three conductors 324 respectively encapsulated or sheathed 326 with screening, insulation and protective coating as suitable for the voltage carried by the electrical cable and the number of conductors.
[0044] FIGURE 26 is a schematic photograph / drawing of the end of an actual prototype bundled assembly 2610 corresponding to the alternate bundled assembly 310 of FIGURE 3. The view shown in the photograph of FIGURE 26 approximately corresponds to the view shown for the alternate bundled assembly 310 of FIGURE 3.
[0045] FIGURE 4 shows an alternative bundled assembly 410 to FIGURES 2 and 3 where the HDPE gas 418 and water 420 pipes, are proportionally smaller in relation to an alternate, triangular high voltage cable 416 and an alternate, triangular communication conduit or ducting 412. In this bundled assembly 410 the high voltage electrical power cable 416 may be specially produced, removing most of the packing or protective covering about the three conductors 324 in the cable, to provide a triangular form to the high voltage cable 416 which may fit more readily into a
comparatively to FIGURE 3 smaller pocket between the two HDPE pipes 418, 420 as shown in FIGURE 4.
[0046] FIGURE 4 also shows the communications cable 114 housed in a specially formed duct 412 to fit between the pipes 418, 420 in a similar way to the triangular shaped high voltage cable 416. The shape and dimensions of the triangular duct 412 and triangular shaped high voltage cable 416 may be selected or configured to separate the gas 418 and water 420 pipes once bundled with the outer sheath 122. A gap 424 formed between the pipes 418, 420 may be advantageously used for filling as described below. In addition the triangular form of the triangular duct 412 and cable 416 may also provide advantages to spreading the loads within the bundled assembly to the side walls of the pipes 418, 420 more favourably.
[0047] The triangular conduit or ducting 412 of FIGURE 4 may be corrugated with through apertures (not shown) that communicate between the gap 424 and an alternate sheathing or bundling means 422. Through apertures are described below with reference to Fig 5. The alternate sheath 422 may not be a continuous sheath but intermittent or a spiral wound strapping as described below with respect to FIGURES 7 to 18 to provide gaps in the sheath or between the straps 422. Where the alternate bundled assembly 410 is placed in a trench fine aggregate or earth may used for back filling into the trench during installation such that fine aggregate flows through the gaps in the alternate sheath 422, through the apertures in the triangular conduit 412 and into the spaces between the conduit 412, pipes 418, 420 to the high voltage cable 416. In this manner fine aggregate or earth may be fill the interior gaps or voids of the alternate bundled assembly 410. The use of backfilling into the bundled assembly may be used to reduce or prevent migration of any gas leakage along the bundled assembly or trench.
[0048] In FIGURES 1 to 4 the ducting or conduit 112, 412 for the
communications cable 114 is shown as oversized to the outer diameter of the cable 114. The use of an oversized conduit 112, 412 to sleeve the communications cable 114 may provide advantages to coiling of the bundled assembly as described below with respect to FIGURES 19 to 25.
[0049] Opportunity for gas to track along air gaps between the pipes: One potential hazard when bundling pipes together where flammable gas is involved may
be the possibility for gas from a leaking pipe to track along the outside of the pipe and vent to atmosphere possibly several kilometres down the network line and to the vicinity of a potential ignition source. The alternate bundling assembly 410 allows a sealing medium, sand or aggregate back fill to be able to fall between the pipes in order to seal off / isolate either continuously or intermittently along the trench, the bundled assembly and the gathering network.
[0050] FIGURE 5 is schematic of a perspective view of an alternative corrugated ducting 526 or corrugated separator suitable for the communications cable 114 and high voltage cable 116, 416 to be inserted into. In order for the corrugated ducting 526 to be coiled in the bundled assembly, partial or fully circumferential corrugations may be formed in the wall of the ducting 526 to allow it to bend appropriately with the rest of the components in the bundled assembly 710, as shown with respect to Figures 7 to 9. Alternatively or in addition to corrugations, partial circumferential slots (not shown) may also be made in the wall of the ducting 526 to allow it to bend suitably during coiling. The alternate corrugated ducting 526 may also have thru apertures (not shown) in the manner of the alternate triangular
communication conduit 412 to also allow backfilling with fine aggregate and / or earth. The thru apertures may also aid in allowing the bundled assembly 710 to also bend appropriately when being coiled. Coiling is described below with respect to FIGURES 19 to 25.
[0051] FIGURE 6 is a transverse cross- sectional view along lines 6-6 of the corrugated ducting in FIGURE 5. The communications cable 114 may be inserted into the upper gap 628 of the alternate ducting 526. The high voltage cable 116, 416 may be inserted into the lower gap 630 of the alternate ducting 526. When the alternate corrugated ducting has no or minimal thru apertures then a purging air or another suitable inert gas may be passed through the corrugated ducting to reduce or eliminate flammable gas accumulation as well as to aid in monitoring pipe integrity. The purging air or inert gas may also provide cooling to the high voltage cable.
[0052] FIGURES 7 to 9 are respective perspective, sectional and plan views of the alternate corrugated ducting 526 used in another bundled assembly 710 with strapping or bands. The corrugated ducting / separator 526 may have multiple through apertures to allow it and the bundled assembly to be filled. The apertures sizes may
be at least five to ten times the aggregate or earth particle or clump size to allow ready filling. The apertures may be distributed about the top, side walls and bottom of the corrugated ducting 526 as suitable to allow filling of the bundled assembly.
[0053] Another version of the spacer or separator may be in the form of a lattice or frame with a similar profile as Figure 6.
[0054] The lattice or framework separator (not shown) may perform the same function as the corrugated ducting 526 of separating and locating the components of the bundled assembly. The lattice or frame work form though allows for many more through apertures for filling of the bundled assembly.
[0055] The corrugated ducting 526 and the alternative lattice version may be made of PE which is softer than the other components of the bundled assembly and provides some slip between the components. The use of such a material has advantages as described below with reference to the intermittent spacers.
[0056] Intermittent spacers, (not shown) between the two HDPE gas and water pipes , may also be used to maintain a separation for aggregate or backfilling soil or earth to fall between the spacers and the pipes as an alternative to the corrugated ducting 526 of FIGURES 5 to 9. The intermittent spacers may be suitably formed and profiled foam spacers that may be in the approximate shape of that shown in FIGURE 6 but only approximately 25 to 50mm in length with respect to the longitudinal axis of the bundled assembly. The foam spacers (not shown) may be placed along the bundled assembly at distances of every one to three metres to provide a similar support and spacing function as that provided by the corrugated ducting 526. Alternatively the foam spacers may be extruded as a continuous length in a form similar to FIGURE 5 or the communications ductings 112, 412 of FIGURES 1 to 4 to provide the same function. The foam profiles may also be formed of polyethylene (PE) foam or other such similar softer material compared with the gas and water pipes. The use of a softer foam than the pipe material may aid in preventing damage to the pipes in the event of earth movement and settling for an installed bundled assembly in a gathering network. Movement of the earth and trench backfill may also occur with the passage of trucks, farm equipment and the like over the gathering network as is usual in remote installations where there is mixed use of the land and resources.
[0057] Suitable clearance and isolation regarding induced Voltage effects:
Induced voltages being generated due to the close proximity of the water pipe 120, 420 and the high voltage power cable 116, 416 may be a significant issue where services are co-located. The use of the intermittent spacers / separators and other means described in FIGURES 4 to 9 in the bundled assembly may be used to also provide a suitable required separation or isolation with respect to possible induced voltages and currents. In addition the use of backfilling in a trench installation, as described above, may provide further isolation and separation between services. For example the use of a backfilled earth and the use of intermittent spacers may significantly and easily reduce the voltages and currents induced in other services of the bundled assembly as well as fittings and components associated with the bundled assembly.
[0058] It will be readily appreciated that fine aggregate and earth may also be used to back fill a bundled assembly that is not laid in a trench but instead laid on the ground surface. In such above ground installations fine aggregate or earth may be mounded on top of and into the bundled assembly gathering network.
[0059] FIGURES 7 to 9, 10 to 12 , 13 to 15 and 16 to 18 are examples of different bundling means to straps and bands to aid in forming the bundled assembles 710, 1010, 1310, 1610. The first three sets of FIGURES have perspective, sectional and plan views. The fourth set of FIGURES 16 to 18 has a side elevational view for FIGURE 18. The straps or bands of FIGURES 7 TO 18 may be spaced approximately 300 mm to 1200 mm apart and vary in the width of the strap or bands as appropriate to the spacing and the requirement to secure the bundled assembly components together.
[0060] FIGURES 7 to 9 are an example of narrow bands 722 spaced closely in comparison to the broader bands 1022 of FIGURES 10 to 12. The broader bands 1022 being relatively spaced further apart along the length of the respective bundled assemblies 710, 1010 than the narrower bands 722.
[0061] FIGURES 13 to 15 and 16 to 18 are examples of spiral tape or band windings 1322, 1622 about two bundled assemblies 1310, 1610.
[0062] The use of band or tape windings to secure the bundled assemblies may also provide an advantage in enabling remote on-site fabrication of a bundled
assembly as it is being laid into a trench rather than a factory fabrication of the bundled assembly.
Bundled Assembly to a Bundled Coil:
[0063] Conduit, Pipe and Cable Dimensions: The relative dimensions and cross-sectional shapes of the conduit, pipe and cable forming a bundled assembly may be selected and configured in order to provide appropriate services for the network gathering application but also to facilitate coiling of the bundled assembly. That is, the bundled assembly may be formed so that it will layer properly in the bundled coil. For example if the high voltage and communication cables were too big then they would impinge on the layer above and below in the coiled form. In addition the form and configuration of a bundled assembly is described below to facilitate a substantially undistorted bundled assembly when the bundled coil of the bundled assembly is uncoiled at the remote site for use.
[0064] Setting the minimum Coil Internal Diameter: The HDPE pipes may be manufactured in accordance with the published Australian Standard
AS/NZS4130:2009 "Polyethylene (PE) Pipes for Pressure Applications ", however there is no specification for the minimum internal diameter (i.d.) of coiled pipe other than Clause 9.3 of AS/NZS4130:2009 which states "The internal diameter for a coil of pipe shall be such that kinking is prevented" . It is commonly known that once individual HDPE pipe is uncoiled and strung out for installation it may not fully revert to its original roundness. It is the responsibility of the manufacturer to establish the minimum ID of the coil of HDPE pipe that will result in acceptable pipe product once uncoiled.
[0065] When setting the dimensions of a coil for a particular pipe dimension, the minimum bend radius for the pipe may need to be considered in order to set the internal diameter of the coil, ("Coil ID"). Thin walled pipe (high SDR number) is more susceptible to increased ovality and even kinking when coiled. Setting the internal diameter is a balance between maximising the length of pipe on the coil and minimising ovality or permanent deformation of the pipe when uncoiled for installation. Typical ratios are known in the industry and are represented in terms of Coil ID / Pipe DN in particular standards. Typically such ratios may be between 14
and 25 according to the Pipe SDR. For coils formed of a collection of multiple pipes, power cable and communication conduit as described herein to the bundled assembly, no such general or standards guidelines are available. For example there are no guidelines to the effects of close proximity and disruption between components in a bundled assembly and consequent issues at uncoiling in an installation. An example of an apparatus and method for uncoiling pipe that may be adapted for assemblies of pipe may be found in Australian Provisional Patent Application no. 2016900775, "A De- Coiling Trailer for Plastic Pipe ", the contents of which are incorporated herein by reference.
[0066] FIGURES 19 to 22 show a bundled coil 1930 of the bundled assembly invention described above. FIGURES 19, 20 and 21 are respective side and perspective views of the bundled coil 1930. FIGURE 22 is a typical bundled assembly 2210 of FIGURES 19 to 21. The other bundled assemblies described herein may also be used in FIGURES 19 to 21.
[0067] FIGURES 23 to 25 are further schematics of the bundled coil 1930 shown in FIGURES 19 to 22. FIGURES 24 and 25 are respective sectional views along lines A- A and B-B as shown in FIGURE 23. FIGURES 24 and 25 show that the configuration of the bundled assembly 2210 advantageously and readily layers 2424 to form the bundled coil 1930. The layered bundled coil is in a compact, stable and readily transportable form suitable for transport to a remote site for installation.
[0068] Coiled form: To achieve continuous lengths of typically 100m to 1000m the pipes, conduits and cable are bundled in such a way as to enable them to be wound into a coil 1930. The coil 1930 may be a free standing coil held together with strapping 1932. Strapping 1932 may be applied to bind the coil together. Strapping 1932 may be in eight, six or four locations about the bundled coil 1930 as shown in FIGURES 19 to 21. The strapping 1932 may also be applied to intermediate layers during coiling as well as on the final coil of a bundled assembly.
[0069] At FIGURES 1 to 4 and 7 to 16 show an oversized ducting or conduit 112. 412 that may be used to sleeve the communications cable 114 so as to provide space for the less flexible cable to move transversely and longitudinally as required during coiling without disrupting the other components of the bundled assembly. For example during coiling the space between the larger inner diameter of the oversized
ducting 112, 412 and the smaller outer diameter of the communications cable 114 may allow the cable to bend and move within the ducting as coiling of the bundled assembly progresses.
[0070] In addition the choice of orientation of the bundled assembly where the conduit 112, 412 and cable 114 are chosen to be innermost or outermost during coiling may be made so as to favour a desired bending radius for the bundled assembly without disruption between the components of the bundled assembly.
Similarly the use of the oversized ducting or conduit and the choice of orientation may aid in uncoiling to reduce or eliminate kinking of components and reduce ovality / lack circularity of the pipes. It will be readily appreciated that the ratio selected for the oversizing of the conduit or ducting 112, 412 to the cable 114 may aid coiling and uncoiling. For example the ratio of the internal diameter of the ducting 112, 412 to the outside diameter of the cable 114. The ratio and the dimensions that may be selected for the oversizing may be as shown in the FIGURES and as to provide the function as described herein.
[0071] It will also be readily appreciated that the ducting wall thickness and diameter may also be selected so as to provide an appropriate bend radius during coiling without significant damage or buckling of the ducting 112, 412.
[0072] The bundling means may further include the use of the oversize ducting 112, 412 to provide a bundled assembly that may be coiled and uncoiled with a communications cable as part of the bundled assembly.
[0073] When forming the bundled coil of the bundled assembly with a coiling means described herein the following has been found to be significant, a handling of the lead end 1934, and a tail end 1936 of the bundled coil during coiling. The lead end 1934 is the start of the coil 1930 and sits on the inner diameter of the coil. The lead end 1934 may also be termed interchangeably a lead-in end, an inner tail and / or an inner pipe tail. It has been found to be important that the bend radius of the individual components of the bundled assembly, particularly the gas and water pipes, are not such that would cause kinking. Typically kinking may be caused when the bend radius is locally reduced, for example where the lead end 1934 may be tucked inside the coil during and after coiling. Alternatively kinking may also occur when localised pressure is applied on the inside of the coil for example by: the lead end 1934 being
tucked inside the coil, the strapping being too tight and / or tensioning on the bundled assembly during cooling being too high or too low. Preferably the lead end may be allowed to protrude or otherwise extend out of the side of the coil in order to reduce the possibility of kinking as shown in FIGURES 19, and 23 to 25. Alternatively, special precautions may be made in order have the lead end 1934 inside the coil and prevent kinking: for example recesses and the like in spindle of the coiler to accommodate the lead end 1934 may be employed.
[0074] The coiling means refers to apparatus and methods known in the pipe manufacturing industry for coiling pipe onto large spools and bobbins so that the pipe may be stored and / or transported. The coiling means as used here also includes adaptions to apparatus and methods for coiling in order to perform the invention described herein, for example the positioning of the lead end 1934 when forming the coil 1930. The coiling means may also include providing multiple feeds to a coiler of the components of the bundled assembly and bundling them together to form the bundled assembly as coiling proceeds.
[0075] Design of the coil dimensions: The bundled coil may be transported by road or rail and as such are subject to restrictions on height, width and weight. HDPE pipe is further restricted by the minimum bend radius achieved before unacceptable deformation or kinking occurs. With these parameters in mind the coil dimensions and as such the maximum length, a number of layers of the bundled assembly radially, pipe dimensions, conduit and cable dimensions within the bundled assembly may be set for a bundled coil product. For example a bundled coil may have a maximum outside diameter of up to approximately 3450 mm for road transport by conventional trucks and trailers. Alternatively custom and inventive trailers for trucks may be able to accommodate a bundled coil with a maximum outside diameter of up to approximately 4900 mm; for example Australian Patent Application no.
2016100252, "A Trailer", the contents of which are incorporated herein by reference. The width of the bundled coil may be up to approximately 2290 mm.
[0076] In this specification, terms denoting direction, such as vertical, up, down, left, right etc. or rotation, should be taken to refer to the directions or rotations relative to the corresponding drawing rather than to absolute directions or rotations unless the context require otherwise.
[0077] Although the invention has been herein shown and described in what is conceived to be the most practical and preferred embodiments, it is recognized that departures can be made within the scope of the invention, which are not to be limited to the details described herein but are to be accorded the full scope of the appended claims so as to embrace any and all equivalent assemblies, devices, apparatus, articles, compositions, methods, processes and techniques.
[0078] In this specification, the word "comprising" is to be understood in its "open" sense, that is, in the sense of "including", and thus not limited to its "closed" sense, that is the sense of "consisting only of. A corresponding meaning is to be attributed to the corresponding words "comprise, comprised and comprises" where they appear.
Claims
1. A bundled assembly including:
a gas pipe,
a water pipe,
a power cable,
a communication cable, and
a means for bundling the bundled assembly;
wherein the means for bundling includes at least one of straps, bands and a sheath to bind together the gas pipe, the water pipe, the power cable and the communication cable to form the bundled assembly.
2. A bundled assembly according to claim 1,
wherein the means for bundling further includes an oversized ducting to sleeve the communication cable in the bundled assembly.
3. A bundled assembly according to claims 1 or 2,
wherein the means for bundling further includes isolating at least two of the gas pipe, the water pipe, the power cable and the communication cable from each other.
4. A coiled bundled assembly comprising:
a bundled assembly including a gas pipe, a water pipe, a power cable and a communication cable; and
a means for bundling the bundled assembly;
wherein a lead-in end of the coiled bundled assembly protrudes from the coiled bundled assembly.
5. A coiled bundled assembly according to claim 4, wherein the bundled assembly includes an oversized ducting to sleeve the communication cable.
6. A method of coiling a bundled assembly, including the steps of:
providing the bundled assembly components of: a gas pipe, a water pipe, a power cable and a communication cable;
configuring or arranging the bundled assembly components;
binding the bundled assembly; and
coiling the bundled assembly;
wherein the configuring or arranging, binding and coiling steps provide a substantially undistorted bundled assembly when the bundled assembly is uncoiled.
7. A method according to claim 6, wherein the step of configuring or arranging includes the step of:
sleeving the communication cable in an oversized duct.
8. A method according to claims 6 or 7, wherein the step of coiling includes the step of:
extending the lead-in end of the bundled assembly out from a coiled bundled assembly.
9. A bundled assembly substantially as described herein with respect to figures 1 to 18.
10. A coiled bundled assembly substantially as described herein with respect to figures 19 to 25.
11. A method of coiling a bundled assembly substantially as described herein with respect to figures 19 to 25.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2015900995 | 2015-03-19 | ||
| AU2015900995A AU2015900995A0 (en) | 2015-03-19 | Bundled Coils and Bundled Assemblies |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2016145494A1 true WO2016145494A1 (en) | 2016-09-22 |
Family
ID=56918174
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/AU2016/050193 WO2016145494A1 (en) | 2015-03-19 | 2016-03-18 | Bundled coils and bundled assemblies |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2016145494A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3137276B1 (en) * | 2014-04-30 | 2019-07-31 | Zephyros Inc. | Method for making an insert as structural reinforcement |
| GB2609261A (en) * | 2021-07-28 | 2023-02-01 | Equinor Energy As | Subsea cable bundle installation |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553938A (en) * | 1983-11-10 | 1985-11-19 | Sybron Corporation | Low torsional restraint instrument handpiece hose |
| US4979296A (en) * | 1986-07-25 | 1990-12-25 | Shell Oil Company | Method for fabricating helical flowline bundles |
| US20030021633A1 (en) * | 2000-08-07 | 2003-01-30 | Ichiro Seto | Method and structure for laying communication cable in underground line, and members used for laying |
| US20050277347A1 (en) * | 2001-04-27 | 2005-12-15 | Quigley Peter A | Buoyancy control systems for tubes |
| US6979776B1 (en) * | 2004-10-14 | 2005-12-27 | Entergy Louisiana, Inc. | Pipe bundle for underground installation |
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2016
- 2016-03-18 WO PCT/AU2016/050193 patent/WO2016145494A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4553938A (en) * | 1983-11-10 | 1985-11-19 | Sybron Corporation | Low torsional restraint instrument handpiece hose |
| US4979296A (en) * | 1986-07-25 | 1990-12-25 | Shell Oil Company | Method for fabricating helical flowline bundles |
| US20030021633A1 (en) * | 2000-08-07 | 2003-01-30 | Ichiro Seto | Method and structure for laying communication cable in underground line, and members used for laying |
| US20050277347A1 (en) * | 2001-04-27 | 2005-12-15 | Quigley Peter A | Buoyancy control systems for tubes |
| US6979776B1 (en) * | 2004-10-14 | 2005-12-27 | Entergy Louisiana, Inc. | Pipe bundle for underground installation |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3137276B1 (en) * | 2014-04-30 | 2019-07-31 | Zephyros Inc. | Method for making an insert as structural reinforcement |
| US10427346B2 (en) | 2014-04-30 | 2019-10-01 | Zephyros, Inc. | Extruded reinforcements |
| GB2609261A (en) * | 2021-07-28 | 2023-02-01 | Equinor Energy As | Subsea cable bundle installation |
| GB2609261B (en) * | 2021-07-28 | 2024-04-10 | Equinor Energy As | Subsea cable bundle installation |
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