EP1296018B1 - Lining a lateral wellbore - Google Patents

Lining a lateral wellbore Download PDF

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Publication number
EP1296018B1
EP1296018B1 EP02102821A EP02102821A EP1296018B1 EP 1296018 B1 EP1296018 B1 EP 1296018B1 EP 02102821 A EP02102821 A EP 02102821A EP 02102821 A EP02102821 A EP 02102821A EP 1296018 B1 EP1296018 B1 EP 1296018B1
Authority
EP
European Patent Office
Prior art keywords
tubular member
wellbore
aperture
junction
lateral
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.)
Expired - Lifetime
Application number
EP02102821A
Other languages
German (de)
French (fr)
Other versions
EP1296018A2 (en
EP1296018A3 (en
Inventor
Marc David Kuck
Thomas Floyd Bailey
Monte Ira Johnson
Robert Eugene Robertson
Thurman B. Carter
William Alan Blizzard, Jr.
Teme Forrest Singleton
John Douglas Roberts
William Allen Spielman
David Michael Haugen
Andrew Arthur Whitaker Barry
Guy Lamont Mcclung
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.)
Weatherford Lamb Inc
Original Assignee
Weatherford Lamb Inc
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
Priority claimed from US09/053,254 external-priority patent/US6070665A/en
Application filed by Weatherford Lamb Inc filed Critical Weatherford Lamb Inc
Priority claimed from EP99913511A external-priority patent/EP1068425B1/en
Publication of EP1296018A2 publication Critical patent/EP1296018A2/en
Publication of EP1296018A3 publication Critical patent/EP1296018A3/en
Application granted granted Critical
Publication of EP1296018B1 publication Critical patent/EP1296018B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E21B17/02—Couplings; joints
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/061—Deflecting the direction of boreholes the tool shaft advancing relative to a guide, e.g. a curved tube or a whipstock
    • 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
    • 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
    • E21B10/00—Drill bits
    • E21B10/60—Drill bits characterised by conduits or nozzles for drilling fluids
    • 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
    • E21B12/00—Accessories for drilling tools
    • E21B12/04—Drill bit protectors
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
    • 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
    • E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
    • E21B23/02—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for locking the tools or the like in landing nipples or in recesses between adjacent sections of tubing
    • 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
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/06—Cutting windows, e.g. directional window cutters for whipstock operations
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0035—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches
    • E21B41/0042—Apparatus or methods for multilateral well technology, e.g. for the completion of or workover on wells with one or more lateral branches characterised by sealing the junction between a lateral and a main bore
    • 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
    • E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
    • E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
    • E21B49/06—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil using side-wall drilling tools pressing or scrapers
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/10—Correction of deflected boreholes

Definitions

  • This invention relates to a well comprising a primary wellbore and a secondary wellbore leading from said primary wellbore wherein a juncture is formed therebetween, said juncture lined with a tubular member extending from said primary wellbore into said secondary wellbore.
  • a lateral or secondary wellbore was bored in a formation from the main or primary wellbore.
  • the primary wellbore is usually cased and the lateral well is lined with liner.
  • the liner may be hung using a liner hanger, from the cased primary wellbore.
  • a packer may also be set to seal the annulus between the casing and the liner.
  • a mill is simply run through the wall of the liner to establish an opening into the primary wellbore.
  • GB 2304764 describes a downhole completion tool which includes a pre-machined window joint and a production tube which can be passed through the window joint and into a pre-drilled and cased lateral.
  • a wellbore junction comprising:
  • Figure 1A shows a system 200 with a tubular member 202 having a top end 204 with an anchor 206 and a bottom end 208 with a plug, (preferably drillable) 210.
  • An anchor may be provided at the end 208.
  • a bar, whipstock, or diverter 212 is secured at a lower end of a pre-formed or pre-machined window 214 to and within the tubular member 202.
  • a sleeve 220 e.g. a liner or wellbore tubular, (made e.g. of metal, brass, bronze, zinc, zinc alloy, aluminium, aluminium alloy, fibreglass, or composite) is releasably secured in or is inserted into and through the tubular member 202.
  • the sleeve 220 is moved down to contact the diverter 212 which urges the sleeve 212 to a position as shown in Figure 1B (e.g. into an already underreamed formation portion or into a lateral bore extending from a main wellbore.
  • an activatable sealing material 222 disposed around the edge of the window 214 is activated to effect sealing securement of the sleeve 220 at the window 214.
  • a flange 224 formed of or secured to the sleeve 220 extends interiorly beyond the edge of the window 214 to facilitate sealing of the sleeve at the window and to serve as a stop and locking device.
  • any suitable stored energy medium may be used as the sealing material 222, including, but not limited to, thermite and other iron oxide-aluminium compounds which react to form a metal seal or weld between parts and which are activated by heat with suitable initiation devices as are well known in the art indicated schematically by the device 221, Figure 1E.
  • the sleeve 220 has an open lower end. As shown in Figs. 1A and 1B a pressure-containing drillable shoe or end cap 226 seals off the sleeve's bottom end.
  • the diverter 212 is replaceable or removable in the wellbore or at the surface.
  • the sleeve 220 may be any desired length.
  • a sleeve 240 (like the sleeve 220) with a flange 241 has been installed at a pre-formed window 244 of a tubular body 246 installed in a casing 248 of a wellbore 250 extending from an earth surface down in an earth formation 252 and sealed in place with sealing material 243.
  • a top anchor 254 anchors the top of the tubular body 246 in casing 248.
  • a diverter 242 secured within the body 246 (removable or not) has urged the sleeve 240 into an underreamed part of the formation 252 and a liner 256 has been inserted into and through the sleeve 240.
  • the liner 256 (any desired length) extends down into a lateral wellbore 258.
  • a liner hanger or packoff liner hanger 260 is at the top of the liner 256.
  • the liner may be cemented into place with cement 262.
  • An anchor 255 anchors the bottom of the tubular body 246. Alternatively a plug may be used instead of, or in addition to, the anchor 255.
  • a system with a sleeve as shown in Figure 1A or 1E is run in a well and set, or bridged, across an already milled and under-reamed portion of casing.
  • the sleeve is then pushed down to the diverter and forced out of the pre-machined window in the tool body.
  • the flange on the sleeve is adjacent to a shoulder in the pre-machined window and positioned in place.
  • the stored energy medium reaction is then initiated creating a pressure-containing seal between the flange and the tool body.
  • a lateral open hole may be drilled or an existing lateral open hole may be lengthened.
  • An additional length of liner may be run into the drilled open hole and hung off the sleeve and then cemented into place.
  • the lateral open hole is first drilled and then an entire liner string with a flange on top (like, e.g. the flange 241, Figure 1E) is run into place.
  • a seal is then activated (as with the systems of Figs. 1A and 1E with sealing material 222 or 243). If desired; the liner is then cemented in place.
  • a system as in Figs. 1A or 1E is run into a new well (without a sleeve or liner in place within the tool body) by placing the tool body directly in a new casing string while running in hole, with slight modifications (e.g. no anchors or plugs are needed) to the tool body. The aforementioned procedures are then followed, with the absence of section milling and under-reaming.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Soil Sciences (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Earth Drilling (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Body Structure For Vehicles (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Description

  • This invention relates to a well comprising a primary wellbore and a secondary wellbore leading from said primary wellbore wherein a juncture is formed therebetween, said juncture lined with a tubular member extending from said primary wellbore into said secondary wellbore.
  • Prior to the present invention, a lateral or secondary wellbore was bored in a formation from the main or primary wellbore. The primary wellbore is usually cased and the lateral well is lined with liner. The liner may be hung using a liner hanger, from the cased primary wellbore. A packer may also be set to seal the annulus between the casing and the liner. To re-establish fluid flow through the primary wellbore, a mill is simply run through the wall of the liner to establish an opening into the primary wellbore.
  • A problem has been observed that the mill often mills the wrong part of the liner.
  • GB 2304764 describes a downhole completion tool which includes a pre-machined window joint and a production tube which can be passed through the window joint and into a pre-drilled and cased lateral.
  • In accordance with one aspect of the present invention there is provided a wellbore junction comprising:
    • a preformed portion of a lateral wellbore;
    • a first tubular member having an aperture formed in a wall thereof;
    • a diversion member disposed within the first tubular member; and
    • a second tubular member coaxially disposed within the first tubular member,
    • wherein the first tubular member, the second tubular member, and the diversion member are insertable into a wellbore in a single run, the second tubular member comprising a lateral liner member permanently disposable within the preformed portion of the lateral wellbore to line the lateral wellbore.
  • Further aspects and preferred features are set out in claim 2 et seq.
  • For a better understanding of the present invention, reference will now be made, by way of example, to the accompanying drawings, in which:
    • Figures 1A, 1B, and 1E are side cross-section views of a liner system in accordance with the present invention;
    • Figure 1C shows cross-section views along the length of the system as illustrated in Figure 1B;
    • Figure 1D is a cross-section view along line 1D-1D of Figure 1B; and
    • Figure 1E shows a sleeve of the system of Figure 1A installed in a wellbore.
  • Figure 1A shows a system 200 with a tubular member 202 having a top end 204 with an anchor 206 and a bottom end 208 with a plug, (preferably drillable) 210. An anchor may be provided at the end 208. A bar, whipstock, or diverter 212 is secured at a lower end of a pre-formed or pre-machined window 214 to and within the tubular member 202.
  • A sleeve 220, e.g. a liner or wellbore tubular, (made e.g. of metal, brass, bronze, zinc, zinc alloy, aluminium, aluminium alloy, fibreglass, or composite) is releasably secured in or is inserted into and through the tubular member 202. The sleeve 220 is moved down to contact the diverter 212 which urges the sleeve 212 to a position as shown in Figure 1B (e.g. into an already underreamed formation portion or into a lateral bore extending from a main wellbore.
  • When the sleeve 220 is in the position shown in Figure 1B an activatable sealing material 222 disposed around the edge of the window 214 is activated to effect sealing securement of the sleeve 220 at the window 214. Preferably a flange 224 formed of or secured to the sleeve 220 extends interiorly beyond the edge of the window 214 to facilitate sealing of the sleeve at the window and to serve as a stop and locking device.
  • Any suitable stored energy medium may be used as the sealing material 222, including, but not limited to, thermite and other iron oxide-aluminium compounds which react to form a metal seal or weld between parts and which are activated by heat with suitable initiation devices as are well known in the art indicated schematically by the device 221, Figure 1E.
  • In one aspect, not shown, the sleeve 220 has an open lower end. As shown in Figs. 1A and 1B a pressure-containing drillable shoe or end cap 226 seals off the sleeve's bottom end.
  • In one aspect the diverter 212 is replaceable or removable in the wellbore or at the surface. The sleeve 220 may be any desired length.
  • As shown in Figure 1E a sleeve 240 (like the sleeve 220) with a flange 241 has been installed at a pre-formed window 244 of a tubular body 246 installed in a casing 248 of a wellbore 250 extending from an earth surface down in an earth formation 252 and sealed in place with sealing material 243. A top anchor 254 anchors the top of the tubular body 246 in casing 248. A diverter 242 secured within the body 246 (removable or not) has urged the sleeve 240 into an underreamed part of the formation 252 and a liner 256 has been inserted into and through the sleeve 240. The liner 256 (any desired length) extends down into a lateral wellbore 258. A liner hanger or packoff liner hanger 260 is at the top of the liner 256. The liner may be cemented into place with cement 262. An anchor 255 anchors the bottom of the tubular body 246. Alternatively a plug may be used instead of, or in addition to, the anchor 255.
  • In one aspect a system with a sleeve as shown in Figure 1A or 1E is run in a well and set, or bridged, across an already milled and under-reamed portion of casing. The sleeve is then pushed down to the diverter and forced out of the pre-machined window in the tool body. In this position, the flange on the sleeve is adjacent to a shoulder in the pre-machined window and positioned in place. The stored energy medium reaction is then initiated creating a pressure-containing seal between the flange and the tool body. At this point, a lateral open hole may be drilled or an existing lateral open hole may be lengthened. An additional length of liner may be run into the drilled open hole and hung off the sleeve and then cemented into place.
  • Alternatively, the lateral open hole is first drilled and then an entire liner string with a flange on top (like, e.g. the flange 241, Figure 1E) is run into place. A seal is then activated (as with the systems of Figs. 1A and 1E with sealing material 222 or 243). If desired; the liner is then cemented in place.
  • In another embodiment, a system as in Figs. 1A or 1E is run into a new well (without a sleeve or liner in place within the tool body) by placing the tool body directly in a new casing string while running in hole, with slight modifications (e.g. no anchors or plugs are needed) to the tool body. The aforementioned procedures are then followed, with the absence of section milling and under-reaming.

Claims (33)

  1. A wellbore junction (200) comprising:
    a preformed portion of a lateral wellbore (258);
    a first tubular member (246) having an aperture (244) formed in a wall thereof;
    a diversion member (242) disposed within the first tubular member; and
    a second tubular member (240) coaxially disposed within the first tubular member,
    wherein the first tubular member, the second tubular member, and the diversion member are insertable into a wellbore in a single run;
    characterised in that the second tubular member comprises a lateral liner member (256) permanently disposable within the preformed portion of the lateral wellbore to line the lateral wellbore.
  2. A wellbore junction as claimed in claim 1, wherein the second tubular member (240) is slideably disposed within the first tubular member (246).
  3. A wellbore junction as claimed in claim 1 or 2, wherein the diversion member (242) has a tapered surface directed toward the aperture (244).
  4. A wellbore junction as claimed in claim 1, 2 or 3, wherein the diversion member (242) guides the second tubular member (240) towards the aperture (244) such that at least a portion of the second tubular member extends beyond the aperture.
  5. A well bore junction as claimed in any preceding claim, wherein the first tubular member (246) and the second tubular member (240) are operatively coupled to limit the distance which the second tubular member may extend outside the aperture (244).
  6. A wellbore junction as claimed in any preceding claim, wherein the first tubular member (246), the lateral liner member (256), and the diversion member (242) form an assembly that is insertable into a wellbore in a single run.
  7. A wellbore junction as claimed in any preceding claim, wherein the diverter member (242) guides the second tubular member (240) from a first coaxial position within the first tubular member (246) to a second divergent position through the aperture (244).
  8. A wellbore junction as claimed in any preceding claim, further comprising a locating device (241) to locate the second tubular member (240) in an extended position relative to the first tubular member (246).
  9. A wellbore junction as claimed in any preceding claim, wherein the second tubular member (252) is cemented in the preformed portion of the lateral wellbore (258).
  10. A wellbore junction as claimed in any preceding claim, wherein the aperture (244) has an edge therearound to which the top end of the second tubular member (240) is welded to sealingly secure the second tubular member at the aperture.
  11. A wellbore junction as claimed in claim 10, wherein the second tubular member (240) has a flange (241) for securement around the edge of the aperture (244).
  12. A wellbore junction as claimed in claim 10 or 11, wherein the second tubular member (240) is welded to the aperture's edge by activated sealing material disposed around the aperture.
  13. A method for creating a junction assembly proximate a junction between a main wellbore (250) and a lateral branch bore (258) comprising:
    operatively coupling a first tubular member (246) to a second tubular member (240), thereby forming an assembly which is insertable into a wellbore;
    the first tubular member having an aperture (244) formed in a wall thereof, and having a diverter member (242) for cooperating with the second tubular member to guide at least a portion of the second tubular member through the aperture;
    inserting the assembly within the main wellbore in a single run;
    positioning the assembly proximate the junction; and
    guiding the second tubular member through the aperture;
    characterised by permanently disposing a lateral liner portion of the second tubular member in the lateral branch bore so as to line the lateral wellbore.
  14. A method as claimed in claim 13, wherein the first tubular (246) and the second tubular (240) are coaxially coupled.
  15. A method as claimed in claim 13 or 14, wherein the portion of the second tubular member (240) extends outside of the first tubular member (246).
  16. A method as claimed in claim 13, 14 or 15, further comprising stopping the first tubular member (246) at a predetermined point of extension.
  17. A method as claimed in any of claims 13 to 16, further comprising anchoring the first tubular member (246) in the main wellbore (250).
  18. A method as claimed in any of claims 13 to 17, further comprising running a drilling member through the second tubular member (240).
  19. A method as claimed in any of claims 13 to 18, further comprising locating the second tubular member (240) in an extended position so as to form a wellbore junction structure.
  20. A method as claimed in claim 19, wherein locating the second tubular member (240) comprises abutting a locating member (241).
  21. A method as claimed in claim 19 or 20, wherein the locating member (241) is a stop device.
  22. A method as claimed in any of claims 13 to 21, further comprising cementing the second tubular member (252) in the lateral branch bore (258).
  23. A method as claimed in any of claims 13 to 22, further comprising effecting a seal around the edge of the aperture (244) by welding the top end of the second tubular member (240) to the edge of the aperture.
  24. A method as claimed in 23, wherein the step of welding is performed by activating activatable material (222) disposed around the edge of the aperture.
  25. A junction apparatus for installation proximate the intersection of a first wellbore (250) and a lateral wellbore (258) extending therefrom, comprising:
    a first tubular member (246) having an aperture (244) formed in a wall thereof and a diversion member (242) proximate the aperture; and
    a second tubular member (240) operatively connected to the first tubular member, such that the first and second tubular members are substantially coaxial,
    wherein the first tubular member, the second tubular member, and the diversion member are insertable into a wellbore as an assembly;
    characterised in that the second tubular member is extendable through the aperture and comprises a lateral liner portion permanently disposable within the lateral wellbore to line the lateral wellbore.
  26. A junction apparatus as claimed in claim 25, wherein the second tubular member (240) is slideably disposed within the first tubular member (246).
  27. A junction apparatus as claimed in claim 25 or 26, wherein the diversion member (242) has a tapered surface directed toward the aperture (244).
  28. A junction apparatus as claimed in any of claims 25 to 27, wherein the diverter member (242) guides the second tubular member (240) from a first coaxial position within the first tubular member (246) to a second divergent position through the aperture (244).
  29. A junction apparatus as claimed in any of claims 25 to 28, wherein the second tubular member (240) is locatable with a locating member (241).
  30. A junction apparatus as claimed in claim 29, wherein the locating member (241) is a stop device.
  31. A junction apparatus as claimed in any preceding claim, wherein the aperture (244) has an edge therearound to which the top end of the second tubular member (240) is weldable to sealingly secure the second tubular member at the aperture.
  32. A junction apparatus as claimed in claim 31, wherein the second tubular member (240) has a flange (241) for securement around the edge of the aperture (244).
  33. A junction apparatus as claimed in claim 31 or 32, further comprising activatable sealing material (222) disposed around the edge of the aperture (244), activatable to effect the weld between the second tubular member (240) and the edge of the aperture.
EP02102821A 1998-04-01 1999-04-01 Lining a lateral wellbore Expired - Lifetime EP1296018B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US53254 1998-04-01
US09/053,254 US6070665A (en) 1996-05-02 1998-04-01 Wellbore milling
EP99913511A EP1068425B1 (en) 1998-04-01 1999-04-01 Drillstring with stabilisers for re-entering a primary wellbore

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP99913511A Division EP1068425B1 (en) 1998-04-01 1999-04-01 Drillstring with stabilisers for re-entering a primary wellbore

Publications (3)

Publication Number Publication Date
EP1296018A2 EP1296018A2 (en) 2003-03-26
EP1296018A3 EP1296018A3 (en) 2003-11-05
EP1296018B1 true EP1296018B1 (en) 2006-08-09

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EP02102821A Expired - Lifetime EP1296018B1 (en) 1998-04-01 1999-04-01 Lining a lateral wellbore

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DE (1) DE69932750T2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111927333A (en) * 2020-07-22 2020-11-13 中国石油天然气股份有限公司 Well structure under geological condition with fault and construction method thereof

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Publication number Priority date Publication date Assignee Title
US2694549A (en) * 1952-01-21 1954-11-16 Eastman Oil Well Survey Co Joint structure between flexible shafting and drill bit structure for drilling lateral bores
FR2692315B1 (en) * 1992-06-12 1994-09-02 Inst Francais Du Petrole System and method for drilling and equipping a lateral well, application to the exploitation of oil fields.
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US5787987A (en) * 1995-09-06 1998-08-04 Baker Hughes Incorporated Lateral seal and control system

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EP1296018A2 (en) 2003-03-26
EP1296018A3 (en) 2003-11-05
DE69932750T2 (en) 2007-08-16
DE69932750D1 (en) 2006-09-21

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