Colin Malcolm Macrae

US Patent:

62443402, Jun 12, 2001

Filed:

Sep 23, 1998

Appl. No.:

9/159530

Inventors:

Jody R. McGlothen - Waxahachie TX
Daniel J. Themig - Cochrane, CA
Robert T. Brooks - Houston TX
Dan P. Saurer - Richardson TX
Colin M. MacRae - The Woodlands TX
David J. Steele - Irving TX
William Sloane Muscroft - Saint Albert, CA
Denis C. Desranleau - Sherwood Park, CA

Assignee:

Halliburton Energy Services, Inc. - Dallas TX

International Classification:

E21B 4700

US Classification:

1662553

Abstract:

A self-locating reentry system is provided to allow reliable reentry from a primary wellbore into one or more secondary wellbores. The reentry system may include one or more self-locating assemblies which may be engaged with selected portions of a lateral opening disposed between the primary wellbore and a respective secondary wellbore. Each self-locating assembly and respective key or lug cooperate with each other to provide optimum location and alignment relative to the lateral opening for communication of well tools and smaller diameter tubing strings between the primary wellbore and the associated secondary wellbore. A retaining mechanism is preferably provided to maintain the locator lug or key in its first retracted position until the reentry system is at a desired downhole location relative to the selected lateral opening.