Claims
- 1. An apparatus for cutting a tubular, the apparatus comprising:
a body having at least one opening formed in a wall thereof; and at least one cutter assembly disposed within the body, the assembly including at least one radially extendable cutter arranged to extend from the opening to contact the inside wall of the tubular therearound.
- 2. The apparatus of claim 1, including at least two cutters that are substantially equally spaced around the body of the apparatus.
- 3. The apparatus of claim 1, wherein the at least one cutter is freely rotatable about an axis which is substantially parallel to the longitudinal axis of the body of the apparatus.
- 4. The apparatus of claim 3, wherein the apparatus rotates about an axis substantially coincidental to the longitudinal axis of the tubular therearound.
- 5. The apparatus of claim 4, wherein the at least one cutter extends from the opening to contact the inside wall of the tubular therearound due to hydraulic force.
- 6. The apparatus of claim 5, wherein the hydraulic force is provided by fluid in a run-in string of tubulars.
- 7. The apparatus of claim 4, wherein rotation of the apparatus is provided through a string of tubulars.
- 8. The apparatus of claim 4, wherein rotation of the apparatus is provided by a mud motor disposed proximate the apparatus in a wellbore.
- 9. The apparatus of claim 5, wherein the hydraulic force is provided by fluid in a string of coiled tubing.
- 10. An apparatus for cutting a tubular in a wellbore, the apparatus comprising:
a rotatable cutting tool having a body with at least one opening formed in a wall thereof and at least one cutter assembly disposed within the body, the assembly including at least one hydraulically actuatable, radially extendable cutter arranged to contact the inside wall of the tubular therearound; a housing disposed above the cutter member, the housing including:
a hydraulically actuatable slip assembly disposed therein and having slip members extending radially from the housing to engage the wall of a tubular therearound; at least one pump therein for actuating the slip assembly and the cutting tool; at least one source of pressurizable fluid in communication with the cutting tool, the slip assembly and the at least one pump; at least one electrical motor for operating the at least one pump and for providing rotation to the cutting tool.
- 11. The apparatus of claim 10 wherein the apparatus is supported in a wellbore by a wireline.
- 12. The apparatus of claim 10 wherein the electrical motor is supplied with power by a wire line extending from the apparatus to the surface of the well.
- 13. An apparatus for setting a liner in a wellbore, comprising:
a run-in string disposable in the wellbore, the run-in string having a bearing disposed therearound, the bearing providing a support for an upper end of a section of liner; a rotatable cutting tool disposed in the run-in string within the liner portion, the cutting tool having a body with at least one opening formed in a wall thereof and at least one cutter assembly disposed within the body, the assembly including at least one hydraulically actuatable, radially extendable cutter arranged to contact the inside wall of the liner therearound, thereby severing the liner into an upper and a lower portion; and an expansion tool disposed on the run-in string below the cutting tool, the expansion tool having a body with at least one opening formed in a wall thereof and at least one roller assembly disposed within the body, the assembly including at least one hydraulically actuatable, radially extendable roller arranged to contact the inside wall of the liner therearound and, through radial force and rotational movement, expand the liner therearound.
- 14. The apparatus of claim 13, wherein the bearing further permits rotation of the run-in string in relation to the liner.
- 15. A method of setting a liner in a wellbore comprising:
running an apparatus into a wellbore, the apparatus including a liner bearingly supported in the wellbore by a run-in string, the run-in string having a cutter and an expander disposed thereon below the bearing; expanding a predetermined portion of the liner into a portion of casing fixed in the wellbore, whereby after expanding, the liner is supported in the wellbore by interference between the liner and the casing; cutting the liner with the cutter; and removing the apparatus including an upper portion of the liner from the wellbore.
- 16. The method of claim 15, further including the step of expanding a remaining portion of a lower portion of the liner after the liner is cut.
- 17. A tubular section for downhole expansion into a larger diameter tubular, the section comprising:
at least two slots formed on an outer surface thereof, the slots decreasing the wall thickness of the tubular section in the location of the slots and defining at least two areas between the slots having an original wall thickness.
- 18. A tubular section for downhole expansion into a larger diameter tubular, the section comprising:
at least two formations formed on an outer surface thereof, the formations decreasing the wall thickness of the tubular section in the location of the formations and defining at least two areas between the formations having an original wall thickness.
- 19. The tubular section of claim 18 wherein, as the tubular section is expanded with a radial force directed towards an inside surface thereof opposite the formations, an outer surface of the formations frictionally contacts an inner surface of the larger diameter tubular.
- 20. The tubular section of clam 19 whereby, after the tubular section has been expanded in the area of the formations, a fluid path is provided through the at least two areas.
- 21. The tubular section of claim 20, further including at least one circumferential sealing groove formed in the outer surface thereof, the sealing groove expandable into contact with the larger diameter tubular to effectively seal the annulus.
- 22. The tubular section of claim 21, wherein the at least one circumferential groove includes an elastomeric sealing ring disposed therein.
- 23. A tubular section for expanding into a larger diameter tubular in a wellbore, the section comprising:
an outer circumferential portion expandable into a tubular therearound in a frictional relationship; and at least one aperture formed in the tubular section and spaced a first longitudinal distance from the outer circumferential portion, the at least one aperture providing a fluid flow path between the an inside and outside of the tubular; whereby, the tubular section and the larger diameter tubular are sealable through expansion of the tubular section.
- 24. A method of joining two tubulars in a wellbore comprising:
disposing a smaller diameter tubular coaxially within a larger diameter tubular; expanding the smaller diameter tubular circumferentially in an area of at least two formations formed on an outer surface thereof, whereby the weight of the smaller diameter tubular is borne by the larger diameter tubular; circulating fluid between the tubulars along areas defined between the formations; expanding a second area of the smaller diameter tubular having at least one circumferential groove formed therearound with a sealing element therein, whereby an annular area defined between the annulus is sealed to the passage of fluid smaller and larger diameter tubulars is sealed.
- 25. The method of claim 24 wherein, the fluid includes cement and the steps are completed before the cement cures.
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of co-pending U.S. patent application Ser. No. 09/712,789, filed Nov. 13, 2000, which is a Continuation-in-Part Application based upon U.S. Pat. No. 6,446,323, which issued on Sep. 10, 2002, and upon U.S. Pat. No. 6,325,148, which issued on Dec. 4, 2001. Each of the aforementioned related patents and patent applications is herein incorporated by reference.
Continuations (1)
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09712789 |
Nov 2000 |
US |
Child |
10389561 |
Mar 2003 |
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Continuation in Parts (2)
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09470176 |
Dec 1999 |
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09712789 |
Nov 2000 |
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09469692 |
Dec 1999 |
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09712789 |
Nov 2000 |
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