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William Banning Vail III, James E Chitwood: Closed-loop conveyance systems for well servicing. Weatherford Lamb, Moser Patterson & Sheridan L, March 22, 2005: US06868906 (90 worldwide citation)

A closed-loop system is used to perform a variety of well services. The well services include well completion services, production and maintenance services, and enhanced recovery services. A closed-loop system to complete an oil and gas well is an automated system under computer control that execute ...


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Neil Andrew Abercrombie Simpson: Procedures and equipment for profiling and jointing of pipes. Weatherford Lamb, Moser Patterson & Sheridan L, March 9, 2004: US06702030 (88 worldwide citation)

Methods and apparatus for shaping pipes, tubes, liners, or casing at downhole locations in wells. Use is made of rollers bearing radially outwards against the inside wall of the pipe (etc.), the rollers being rolled around the pipe to cause outward plastic deformation which expands and shapes the pi ...


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John Timothy Allen, Steven Anthony Box, Bernd Pietras, Jeffrey Michael Habetz: Tong for wellbore operations. Weatherford Lamb, Moser Patterson & Sheridan L, December 30, 2003: US06668684 (86 worldwide citation)

A tong as may be used for a continuous circulation system in a wellbore. The tong has a housing with a hollow interior. A plurality of spaced apart jaw assemblies reside within the housing's hollow interior for engaging a portion of a tubular to be gripped and rotated by the tong. A gear wheel ...


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Doran B Mauldin, Larry D Sibley: One trip expansion method and apparatus for use in a wellbore. Weatherford Lamb, Moser Patterson & Sheridan L, May 11, 2004: US06732806 (86 worldwide citation)

The present invention includes a method and apparatus for setting a liner in a wellbore and then expanding a screen in the wellbore in a single trip. In one aspect of the invention, a liner and expandable screen is provided with a slip assembly to fix the liner in the wellbore. An expansion tool and ...


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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 ...


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Bernd Georg Pietras: Apparatus and method for aligning tubulars. Weatherford Lamb, Moser Patterson & Sheridan L, March 26, 2002: US06360633 (86 worldwide citation)

An apparatus for aligning a first tubular and a second tubular, in certain aspects, the first tubular extending through a power tong and the second tubular extending through a backup tong, the apparatus including positioning apparatus for guiding the power tong with respect to the backup tong and fo ...


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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 ...


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Neil A A Simpson, Mark Hopmann: Apparatus, methods, and applications for expanding tubulars in a wellbore. Weatherford Lamb, Moser Patterson & Sheridan L, March 2, 2004: US06698517 (84 worldwide citation)

The present invention relates to methods and apparatus for expanding tubulars in a wellbore. In one aspect of the invention, an expansion tool with hydraulically actuated, radially expandable members is disposed on a string of coil tubing. In another aspect of the invention the apparatus is utilized ...