1
Douglas J Murray, Frederick T Tilton: Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means. Baker Hughes, Fishman Dionne & Cantor, June 7, 1994: US05318122 (261 worldwide citation)

In accordance with the present invention, a plurality of methods and devices are provided for solving important and serious problems posed by lateral (and especially multilateral) completion in a wellbore including methods and devices for sealing the junction between a vertical and lateral well. Met ...


2
David M Haugen, William A Blizzard Jr, Mark W Schnitker, Steve R Delgado, Thurman B Carter, John D Roberts, Joseph D Mills, Frederick T Tilton, Paul J Johantges, Charles W Pleasants: Wellbore milling and drilling. Weatherford Lamb, Guy McClung, March 30, 1999: US05887655 (163 worldwide citation)

Wellbore operations (e.g. for milling and/or drilling) are disclosed which require a reduced number of tool trips into a wellbore to create a cut-out pocket, opening, or window in a tubular such as casing in the wellbore; and, in some aspects, to continue into a formation adjacent a main wellbore fo ...


3
Michael T Smalley, Thomas R Bailey, Ralph D Wright, David M Haugen, Frederick T Tilton: Wellbore tubular patch system. Weatherford Lamb, Guy McClung, November 7, 2000: US06142230 (138 worldwide citation)

A wellbore tubular patch for patching a hole in a wellbore has been invented, the tubular patch in certain aspects having an expandable top member having a hollow tubular body and a top end and a bottom end, an expandable bottom member having a hollow tubular body and a top end and a bottom end, an ...


4
David M Haugen, Frederick T Tilton, Joseph D Mills, Randy P Hutchings, Guy L McClung III, Steve R Delgado: Wellbore milling-- drilling. Weatherford Lamb, Guy McClung, March 30, 1999: US05887668 (132 worldwide citation)

A tool for wellbore sidetracking operations has been invented, the tool, in one aspect, having a body, a milling section on the body for milling an opening in a tubular in a first wellbore in a formation, the milling section having milling material thereon, and a drilling section on the body for dri ...


5
Thomas R Bailey, Ralph D Wright, David M Haugen, Michael T Smalley, Frederick T Tilton: Wellbore tool stroke indicator system and tubular patch. Weatherford Lamb, Guy McClung, September 28, 1999: US05957195 (110 worldwide citation)

A stroke indicator has been invented for indicating that a movable inner member of an hydraulically activated wellbore tool or apparatus has moved, particularly that movement of such a member indicating that a stroke of the tool or apparatus has occurred. In one aspect such an indicator is used to i ...


6
Simon John Harrall, Paul David Metcalfe, Frederick T Tilton: Downhole tubing. Weatherford Lamb, Moser Patterson & Sheridan L, March 23, 2004: US06708767 (86 worldwide citation)

A downhole apparatus comprises a plurality of tubing sections. Each tubing section has substantially cylindrical portions initially of a first diameter for coupling to end portions of adjacent tubing sections. The end portions are expandable to a larger second diameter. Each tubing section also has ...


7
David M Haugen, Frederick T Tilton: Apparatus and methods for forming a lateral wellbore. Weatherford Lamb, Moser Patterson & Sheridan L, March 23, 2004: US06708769 (85 worldwide citation)

A method and system of forming a lateral wellbore in a time and trip saving manner using a mill/drill to locate and place a casing window. In one aspect of the invention, a lateral wellbore is drilled with liner which is subsequently left in the lateral wellbore to line the sides thereof. In another ...


8
Richard L Giroux, Peter Budde, Erik Eriksen, Frederick T Tilton: Wellbore shoe joints and cementing systems. Weatherford Lamb, Guy McClung, July 4, 2000: US06082451 (60 worldwide citation)

A new method for introducing wellbore cement into a wellbore shoe joint has been invented, the shoe joint having a hollow tubular body, the shoe joint containing an amount of wellbore fluid, the shoe joint disposed in a wellbore cementing system between a float shoe, guide shoe, or other flow appara ...


9
Raphael J Silberman, Frederick T Tilton, Everett H Smith, Dennis A Wichkoski: Single trip tubing hanger assembly. Baker International Corporation, William C Norvell Jr, February 15, 1983: US04373584 (51 worldwide citation)

An apparatus is provided for producing a well from at least one productive zone penetrated by the well bore in which casing is set below the top of the well. Tubing hanger means support at least one production tubing string extending downwardly in the well bore and communicating with a production zo ...


10
Raphael J Silberman, Frederick T Tilton, Everett H Smith, Dennis A Wichkoski: Latch assembly and method. Baker International Corporation, William C Norvell Jr, February 3, 1981: US04248307 (49 worldwide citation)

The present invention provides a latch assembly carriable on a tubing string extendible into a subterranean well, the latch assembly being selectively engageable between upper and lower sections of the tubing string. The latch assembly comprises an outer housing and an inner body, with latching mean ...