Method and apparatus for expanded liner extension using uphole expansion
View Patent ↗An expansion assembly is run into the well as the expandable liner is made up. A work string is tagged into the expansion assembly and run to depth. Pressure drives the swage to initially expand and move uphole with the attached work string until the liner is expanded to set at least one external packer. The balance of the expansion in the uphole direction is continued until the string is expanded into sealing support of a higher string in the wellbore and the variable swage comes out of the hole with the work string. A shoe is milled out and the process can be repeated.
1. A method of installing downhole at least a second tubular string for support from an opening in a first tubular string, comprising:
supporting a second tubular string on a work string, said second tubular string further comprising a shoe fixedly mounted thereto and a swage assembly releasably mounted to said shoe for flow communication therebetween when said swage assembly and said shoe are connected and said work string is engaged to said swage;
inserting said second tubular string through an opening in said first tubular string;
expanding a portion of said second tubular string that extends beyond said opening in said first tubular string in an uphole direction by initially releasing said swage from said shoe which closes off flow through said shoe to allow driving said swage assembly with pressure delivered through said work string;
sealing an annular space around said expanded portion of said second tubular string after said expansion in said uphole direction by engaging said swage assembly to said shoe with said work string;
supporting said second tubular string to said first tubular string after said sealing.
2. The method of claim 1 , comprising: using further expansion of said second tubular string that had not been expanded prior to said sealing to accomplish said supporting of said second tubular string to said first tubular string.
3. The method of claim 1 , comprising: landing said second tubular string on a wellbore support before said moving said swage uphole with said work string.
4. The method of claim 1 , comprising: landing said second tubular string on the wellbore bottom before said moving said swage uphole with said work string.
5. The method of claim 1 , comprising: using an adjustable swage as said swage; building said swage to a larger dimension within said second tubular string with pressure delivered through said work string.
6. The method of claim 5 , comprising: blocking said work string beyond said adjustable swage; providing a seal on said adjustable swage that contacts said second tubular string in its expanded dimension; using pressure in said blocked work string and said seal on said swage to force said adjustable swage uphole.
7. The method of claim 6 , comprising: providing a piston assembly to selectively build said adjustable swage between a smaller and a larger dimension; using pressure in said blocked work string to actuate said piston assembly to build said adjustable swage between said dimensions.
8. The method of claim 7 , comprising: retaining pressure on said piston assembly to hold force on said adjustable swage to remain in its larger dimension as said adjustable swage is driven uphole with pressure through said work string.
9. The method of claim 8 , comprising: blocking said shoe; releasing said adjustable swage from said shoe with pressure in said blocked work string against said blocked shoe.
10. The method of claim 9 , comprising: unblocking said shoe after initial uphole expansion of a portion of said second tubular string; setting down weight on said work string to bring said adjustable swage back to said shoe; delivering a sealing material through said work string and said adjustable swage and said shoe when said adjustable swage is on said shoe.
11. The method of claim 10 , comprising: delivering a sealing material in quantities sufficient to fill an annular space around the portion of said second tubular string that has already been expanded.
12. The method of claim 11 , comprising: blocking said shoe after delivering said sealing material; providing pressure through said work string after delivering said sealing material to build and drive said swage to a portion of said second tubular string that has yet to be expanded while not further expanding the portion of said second tubular string having sealing material around it.
13. The method of claim 12 , comprising: expanding a hanger packer on said second tubular string into said first tubular string for a supporting seal between them accomplished by said adjustable swage exiting the top of said second tubular string.
14. The method of claim 12 , comprising: delivering additional sealing material on top of said blocking in said shoe that followed said sealing material to ease subsequent drill out of said shoe.
15. The method of claim 1 , comprising: using at least one packer mounted to said second tubular string for said sealing.
16. The method of claim 15 , comprising: setting said packer with said uphole expanding of said second tubular string.
17. The method of claim 16 , comprising: supporting said second tubular string to said first tubular string with a continuous uphole movement of a variable swage that also sets said packer.
18. The method of claim 17 , comprising: blocking a lower end of said second tubular string; using a piston assembly to build and drive said variable swage in said second tubular string with pressure delivered through said blocked work string to said piston and a seal associated with said variable swage.
19. The method of claim 1 , comprising: placing said opening in said first tubular string at the lower end of said first tubular string.
20. The method of claim 1 , comprising: placing said opening in said first tubular string as a window in the wall of said first tubular string.
21. The method of claim 1 , comprising: using cement for said sealing.
22. The method of claim 1 , comprising: using an open hole packer for said sealing.