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Paul David Metcalfe, Neil Andrew Abercrombie Simpson: Method and apparatus for drilling and lining a wellbore. Weatherford Lamb, Moser Patterson & Sheridan L, April 8, 2003: US06543552 (226 worldwide citation)

A method and apparatus is provided for drilling and lining a wellbore in one downhole trip. The method comprises mounting a drill bit on a drill string including a section of expandable tubing and providing a tubing expander in the string, then rotating the drill bit and advancing the drill string t ...


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Alasdair Campbell, Paul David Metcalfe, Brian Scott: Downhole apparatus and method for expanding a tubing. Petroline Wellsystems, Alston & Bird, January 11, 2000: US06012523 (159 worldwide citation)

Downhole apparatus is disclosed for use in expanding liner or tubing. The apparatus comprises a body for connection to a string and an expansion portion on the body. The expansion portion includes a plurality of radially movable parts for defining an outer surface thereof. The parts are initially ar ...


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Paul David Metcalfe: Expandable downhole tubing. Weatherford Lamb, Moser Patterson & Sheridan L, September 24, 2002: US06454013 (133 worldwide citation)

A tubing coupling method comprises the steps: providing a length of expandable tubing (


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Alasdair Campbell, Paul David Metcalfe: Expandable tubing connector for expandable tubing. Weatherford Lamb, Moser Patterson & Sheridan L, November 27, 2001: US06322109 (130 worldwide citation)

A tubing connector for joining the ends of two lengths of expandable tubing including two expandable tubular portions for mounting on the ends of the lengths of expandable tubing. Each portion includes a plurality of circumferentially spaced couplings for engaging corresponding couplings on the othe ...


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Paul David Metcalfe: Expandable tubing. Petroline Wellsystems, Alston & Bird, May 23, 2000: US06065500 (118 worldwide citation)

Expandable tubing, as utilized in downhole applications in the oil and gas exploration and extraction industries, includes tubing having a wall with a multiplicity of overlapping longitudinally extending slots therein. The slots have end portions and at least some of the slots are wider at at least ...


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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 ...