Casing exit joint with easily milled, low density barrier

Details Casing exit joint with easily milled, low density barrier Casing exit joint with easily milled, low density barrier

2008-05-21

2010-06-01

Wright, Giovanna C (Department: 3672)

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

C166S313000, C166S050000, C166S117500

Reexamination Certificate

active

07726401

ABSTRACT:
A casing exit joint with an easily milled and low density barrier. A casing exit joint for use in drilling a lateral wellbore outwardly from a parent wellbore includes a generally tubular window structure having a window formed through a sidewall of the structure. An outer sleeve is disposed external to the window structure, so that the sleeve overlies the window. A hardenable substance supports the sleeve against deflection toward the window. A method of drilling a lateral wellbore extending outwardly from a parent wellbore includes the steps of: providing a casing exit joint including a hardenable substance positioned in a sidewall of the casing exit joint; then installing the casing exit joint in the parent wellbore; and then cutting through the hardenable substance in order to provide access for drilling the lateral wellbore.

REFERENCES:
patent: 2007465 (1935-07-01), Burt
patent: 4671367 (1987-06-01), Brunsing et al.
patent: 5462120 (1995-10-01), Gondouin
patent: 5787978 (1998-08-01), Carter et al.
patent: 5875847 (1999-03-01), Forsyth
patent: 5992524 (1999-11-01), Graham
patent: 6012527 (2000-01-01), Nitis et al.
patent: 6041855 (2000-03-01), Nistor
patent: 6206111 (2001-03-01), Nistor
patent: 6308782 (2001-10-01), Brooks et al.
patent: 6913082 (2005-07-01), McGlothen et al.
patent: 6935422 (2005-08-01), Steele et al.
patent: 2002/0056572 (2002-05-01), Hanton et al.
patent: 2004/0026090 (2004-02-01), McGlothen et al.
patent: 2004/0146367 (2004-07-01), Gerhardt et al.
patent: 2004/0168807 (2004-09-01), McGlothen et al.
patent: 2007/0181304 (2007-08-01), Rankin et al.
patent: 9809053 (1998-03-01), None
Sperry-Sun Drilling Services of Canada, Window Assembly L80 drawing No. 101438996, 2 pages, dated Jul. 29, 2005.
Halliburton Fluid Systems, “Cementing: Trophy Seal™ Floating Equipment,” 2 pages, dated May 2005.
Halliburton Fluid Systems, “Cementing Super Seal II® Floating Equipment,” 4 pages, dated Oct. 2006.
Sperry-Sun Drilling Services of Canada, Window Assembly L80 drawing No. 285445, 1 page, undated.
Halliburton Production Optimization, “Completion Tools: Mirage® Disappearing Plug and Autofill Sub,” 2 pages, dated Aug. 2005.
Halliburton Sperry Drilling Services, “SperryRite® Advanced Reservoir Drainage Services,” 2 pages, dated Sep. 2007.
SPE International, IADC/SPE 39367, “Improving Multilateral Drilling and Completion Efficiency with a Hollow Whipstock,” 12 pages, dated 1998.
Halliburton Sperry Drilling Services, “SperryRite® Advanced Reservoir Drainage Services,” 2 pages, Sep. 2007.
International Search Report and Written Opinion issued Jun. 26, 2009, for International Patent Application Serial No. PCT/US09/43074, 7 pages.
International Search Report and Written Opinion issued Jul. 6, 2009, for International Patent Application Serial No. PCT/US09/43097, 7 pages.
Office Action issued Sep. 4, 2009, for U.S. Appl. No. 12/124,810, 16 pages.

Affiliated with

Also associated with

Rating

Casing exit joint with easily milled, low density barrier does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Casing exit joint with easily milled, low density barrier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Casing exit joint with easily milled, low density barrier will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4179654