Classifications

• • 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
  • E21B17/003—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings with electrically conducting or insulating means
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C23/00—Extruding metal; Impact extrusion
  • B21C23/02—Making uncoated products
  • B21C23/04—Making uncoated products by direct extrusion
  • B21C23/08—Making wire, rods or tubes
  • B21C23/085—Making tubes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C25/00—Profiling tools for metal extruding
  • B21C25/04—Mandrels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
  • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
  • B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
  • B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
  • B21C37/15—Making tubes of special shape; Making tube fittings
  • B21C37/151—Making tubes with multiple passages
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/131—Curved articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/285—Feeding the extrusion material to the extruder
  • B29C48/288—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules
  • B29C48/2883—Feeding the extrusion material to the extruder in solid form, e.g. powder or granules of preformed parts, e.g. inserts, retaining their shape during the extrusion process
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
  • B29C48/11—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels comprising two or more partially or fully enclosed cavities, e.g. honeycomb-shaped
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/25—Component parts, details or accessories; Auxiliary operations
  • B29C48/30—Extrusion nozzles or dies
  • B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2023/00—Tubular articles
  • B29L2023/22—Tubes or pipes, i.e. rigid
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
  • B29L2024/00—Articles with hollow walls
  • B29L2024/006—Articles with hollow walls multi-channelled

Definitions

• a pipe or other conduit is lowered into the borehole in an earth formation during or after drilling operations.
• Such pipes are generally configured as multiple pipe segments to form a string, such as a drill string or production string.
• additional pipe segments are coupled to the string by various coupling mechanisms, such as threaded couplings.
• Various power and/or communication signals may be transmitted through the pipe segments via a "wired pipe” configuration.
• Such configurations include electrical, optical, or other conductors extending along the length of selected pipe segments.
• the conductors are operably connected between pipe segments by a coupling configuration such as a pin box connection.
• a coupling configuration such as a pin box connection.
• a wired pipe includes a tubular pipe body having a wall, the wall including an inner surface, a flow channel formed by the inner surface, an outer surface, and at least one channel integrally formed within a thickness of the wall and between the inner and outer surfaces of the wall.
• FIG. 6 shows an end perspective view of another exemplary manufacturing tool
• FIG. 10 shows a cross-sectional view of an exemplary embodiment of a transmission line for use in the wired pipe.
• FIG. 1 shows an exemplary embodiment of a pipe body 12 having a longitudinal axis 14 and one or more helical wire channels 16 formed within a wall 18 of the pipe body 12, from a first end 20 to a second end (not shown) of the pipe body 12.
• the helical wire channel 16 is in the shape of a helix sharing the longitudinal axis 14 of the pipe body 12 and including one or more helical turns, depending on the length of the wired pipe 10.
• the helix angle of the helical wire channel 16 may be dependent upon the overall dimensions of the wired pipe 10.
• the wall 18 includes an outer surface 22 and an inner surface 24, and the helical wire channels 16 are formed between the outer and inner surfaces 22, 24 of the wall 18, within a thickness 26 of the wall 18. In the illustrated embodiment of FIG.
• FIG. 2 shows another exemplary embodiment of a pipe body 112 having one or more helical wire channels 116 formed within a wall 118 of the pipe body 112.
• the wall 118 includes an outer surface 122 and an inner surface 124, and the helical wire channels 116 are formed between the outer and inner surfaces 122, 124 of the wall 118.
• a thickness 126 of the wall 118 is greater at locations of the helical wire channels 116.
• An outer diameter of the pipe body 112 is not constant and is smaller at locations where the wire channels 116 are not located and greater where the wire channels 116 are located.
• An inner diameter of the pipe body 112 is substantially constant.
• a flow channel 128 is provided within an interior 130 of the pipe body 112, the flow channel 128 surrounded by the inner surface 124 of the wall 118.
• FIG. 3 shows another exemplary embodiment of a pipe body 212 having one or more helical wire channels 216 formed within a wall 218 of the pipe body 212.
• the wall 218 includes an outer surface 222 and an inner surface 224, and the helical wire channels 216 are formed between the outer and inner surfaces 222, 224 of the wall 218.
• a thickness 226 is substantially uniform, such that an outer diameter of the pipe body 212 is substantially constant, and an inner diameter of the pipe body 212 is substantially constant.
• a flow channel 228 is provided within an interior 230 of the pipe body 212, the flow channel 228 surrounded by the inner surface 224 of the wall 218.
• a wall surrounding the wire channel as well as the wall of the pipe body must be of sufficient thickness to provide the required strength for torsion, tension, vibration and abrasion while not exceeding the requirements for weight and dimensions (relating to losses in a circulation system).
• weight and dimensions relating to losses in a circulation system.
• CDP conventional drill pipe
• the dimensions are approximately 102 mm at an outer diameter and 82 mm at an inner diameter, providing a 20 mm wall thickness. It has been determined, however, that for such a pipe to incorporate a wire channel 16, 1 16, 216 as shown in FIGS. 1-3, the pipe body 12, 112, 212, respectively, would require a wire channel wall thickness of approximately 10mm.
• a coax cable having, for example, a 2.5mm outer diameter is to be incorporated into the pipe body, then the wall thickness will have to be increased to either radially expand into the interior of the pipe body 12 as shown in FIG. 1, expand radially outward from the pipe body 112 as shown in FIG. 2, or increase an overall thickness of the wall 218 of the pipe body 212 as shown in FIG. 3.
• another exemplary embodiment would be a combination of the pipe bodies 12, 112 shown in FIGS. 1 and 2 where a wire channel incorporates a wire channel wall that protrudes from both an outer surface and an inner surface of the wall, such that neither the inner nor the outer diameter of the pipe body is constant.
• FIGS. 1-3 each illustrate a pair of wire channels 16, 116, 216
• the pipe bodies 12, 112, 212 could be limited to a single channel, or may be provided with more than two channels.
• the incorporation of more than one line should be considered, and therefore two or more wire channels 16, 116, 216 should be formed within the pipe bodies 12, 112, 212.
• an exemplary method of manufacturing the pipe body includes extrusion of a metal material of which the pipe body is made, while forming the helical wire channels 16, 116, 216 directly therein during the extrusion process.
• the extrusion temperature may be about 1200° C, depending on the material for the pipe body 12, 112, 212.
• a line is needed that is able to withstand the temperatures during the production process.
• the line should be made of a material that can withstand the extrusion temperature, or alternatively be covered with an outer jacket made of a material that can protect the line either by withstanding the extrusion temperature, or melting at exposure of the extrusion temperature but providing a buffer between the extruded material of the pipe body 12, 112, 212 and the line.
• a wire conduit made of a material having a melting temperature greater than that of the extrusion temperature could be extruded with the pipe body 12, 112, 212, and the line subsequently inserted therein.
• the exemplary cable 250 includes a conductor 252 which may be made of copper, such as oxygen free high thermal conductivity ("OFHC") copper.
• the conductor 250 is surrounded by an insulator 254, such as Si0 2 dielectric material, separating the conductor 250 from jacket 256, which may also be made of OFHC copper.
• the insulator 254, in particular the Si0 2 dielectric, has electrical properties that are approximately stable over the required manufacturing
• the line 250 is protected by an outer tube 258 providing a high range of performance temperatures and excellent mechanical resistance, such as a stainless steel or titanium.
• the materials for the line 250 may be radiation hardened and thermally stable, and the phase and insertion losses of the line 250 are low.
• the Si0 2 cable 250 which has similar electrical properties of a PTFE cable, can be 30-50% smaller and lighter than PTFE cable, and greater thermal resistance than PTFE cable. The smaller size renders the cable 250 more suitable for use in the wall of pipe body 12, 112, 212.
• PTFE has a much lower melting temperature (less than 350° C) than stainless steel (approximately 1500° C) and titanium (approximately 1650° C).
• the resultant cable 250 with its smaller dimensions and greater thermal resistance is suitable for extrusion within the wall 18, 118, 218 of the wired pipe 10.
• FIG. 4 illustrates a first exemplary embodiment of a manufacturing tool 50 for an extrusion process to form the pipe body 12 shown in FIG. 1.
• the tool 50 includes a housing 52 having an interior space 54 sized to hold raw material prior to the extrusion process.
• the tool 50 also includes an inner surface forming element, such as a first piercing rod 56, and first and second lines or conduits, or second and third piercing rods, represented at 58.
• the seamless wired pipe body 12 shown in FIG. 1 can be formed using the tool 50 by drawing a solid billet between the piercing rod 56 and the housing 52 to create the hollow shell of the pipe body 12.
• the piercing rod 56 forms the flow channel 28 of the pipe body 12.
• second and third piercing rods 58 for forming the wire channels 16 may be used in which case a line may subsequently be inserted.
• a helical structure is beneficial so that the resulting load force is in the direction of the channel 28. Therefore piercing rods 58 for the wire channels 16 may be helically arranged as well.
• a first end 60 of the first piercing rod 56 has an outer surface 62 substantially the same size and shape as the inner surface 24 of the pipe body 12 to be formed.
• the outer surface 62 of the first end 60 is further provided with indentations 64 corresponding to the inward radial protrusions to be formed by the inner surface 24 at the wire channels 16.
• the outer surface 62 of the first end 60 of the piercing rod 56 and an inner surface 66 of the housing 52 form a die of the tool 50.
• the first piercing rod 56 may have a tapered section 68 extending from the first end 60.
• the tapered section 68 allows raw material within the housing 52 to be extruded into the final shape of the pipe body 12 defined in part by the die.
• the first piercing rod 56 further includes an extension portion 70 extending through the interior space 54 of the housing 52.
• the first piercing rod 56 is configured to rotate during the extrusion process to form the wall 18 to accommodate the helically arranged wire channels 16, such as via rotation of the extension portion 70.
• the piercing rod 56 may be drawn back in direction A towards the raw material disposed within the interior space 54 of the housing 52 and/or a ram 72 may push the billet or raw material in direction B towards an opposite end of the housing 52.
• the piercing rod 56 is rotated to allow the wire channel 16 to be created at the appropriate helical angle and the billet or raw material is extruded through the extrusion gap 74 between the first end 60 of the piercing rod 56 and the inner surface 66 of the housing 52.
• the ends of piercing rods 58 are taken out. Therefore the pipe body has to be turned relative to the tool.
• FIGS. 5-8 Another exemplary embodiment of a manufacturing tool 150 for use in forming an integrated wired pipe body 12 is shown in FIGS. 5-8.
• the tool 150 is usable in an embodiment where the raw material is in a melted state prior to extrusion.
• the tool 150 includes a housing 152.
• An inlet 176 (FIG. 6) to an interior 154 of the housing 152 is arranged to receive melted raw material via a raw material introduction tube 178 (FIGS. 7 and 8).
• the inlet 176 includes apertures 180 sized to allow the entry of the raw material, as well as aperture support webs 182 extending into the interior 154 of the housing 152 and supporting an inner surface forming element, such as a mandrel 156, therein.
• the lines 158 are introduced between the housing 152 and the raw material introduction tube 178, as shown in FIGS. 7 and 8.
• the lines 158 are provided with a connection portion 186 extending beyond the extruded pipe body 12 for subsequent connection with a joint or coupler, as will be further described below with respect to FIG. 9.
• An extrusion gap 174 is formed between the inner surface 166 of the housing 152 and the outer surface 162 of the first end 160 of the mandrel 156, such that the extruded pipe body 12 has an outer surface 22 matching the inner surface 166 of the housing 152 at the extrusion gap 174 and an inner surface 24 matching the outer surface 162 of the first end 160 of the mandrel 156.
• the housing 152 with mandrel 156 may be rotated relative to the raw material introduction tube 178 to helically arrange the lines 158 within the wall 18 of the pipe body 12. It should be understood that the rotation is a result of pressing the material through the helical structure of the tool. That is, there is no active rotation of the raw material.
• the extruded pipe body 12 is cooled following extrusion to retain the shape and structure of the extruded pipe body 12 exiting the tool 150.
• the wired pipe 10 is ready for connection to other wired pipes 10. This may be accomplished through the use of a coupler, such as the exemplary embodiment of a tool joint 80 depicted in FIG. 9.
• the tool joint 80 may be attached to an end of the helical channeled wired pipe 10, such as by welding, factional welding, or other attachment methods.
• the joints 80 may be provided with bores 82 to pass the connection portions 186 of the lines 158 there through.
• the bores 82 may be gun drilled.
• the wired pipe 10 and joint 80 are aligned such that, at the final position of the welding process, the openings 84 to the bores 82 in the tool joint 80 and the openings 32 (FIG. 1) of the channel 16 for the line 158 in the pipe body 12 are aligned. Afterwards the end of the bores 82 could be re-drilled, if necessary. It is also possible to route the lines 158 through the channel 16 after finishing the channel 16 or to connect the wire in the pipe body 12 after re-drilling with another wire routed through the tool joint 80. Another option would be to drill the bores 82 through the tool joint 80 after attaching the tool joint 80 to the pipe body 12. In this case the final orientation of the tool joint 80 relative to the pipe body 12 after the attachment would not matter.
• the tool joint 80 may include a threaded end portion 86.
• the threaded end portion 86 may include male or female threads, and a tool joint (not shown) having the other of male or female threads can be connected to an opposite end of the wired pipe 10.
• the tool joint 80 also includes a flow channel 88 aligned with the flow channel 28 after connection to the wired pipe 10.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Geology (AREA)
• Mining & Mineral Resources (AREA)
• Physics & Mathematics (AREA)
• Environmental & Geological Engineering (AREA)
• Fluid Mechanics (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Rigid Pipes And Flexible Pipes (AREA)
• Details Of Indoor Wiring (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (1)

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ID=53180188

Family Applications (1)

Country Status (5)

Families Citing this family (6)

Citations (5)

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• 2013
  • 2013-11-22 US US14/087,422 patent/US9512682B2/en active Active
• 2014
  • 2014-11-21 EP EP14863193.0A patent/EP3071790B1/en active Active
  • 2014-11-21 WO PCT/US2014/066841 patent/WO2015077575A1/en not_active Ceased
  • 2014-11-21 CN CN201480071129.XA patent/CN105940186B/zh active Active
  • 2014-11-21 BR BR112016011607-0A patent/BR112016011607B1/pt active IP Right Grant

Patent Citations (5)

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