1
Gregory G Galloway, David J Brunnert: Drilling with concentric strings of casing. Weatherford Lamb, Moser Patterson & Sheridan L, February 22, 2005: US06857487 (102 worldwide citation)

The present invention provides a method and apparatus for setting concentric casing strings within a wellbore in one run-in of a casing working string. In one aspect of the invention, the apparatus comprises a drilling system comprising concentric casing strings, with each casing string having a dri ...


2
Gregory G Galloway, David J Brunnert: Apparatus and method for drilling with casing. Weatherford Lamb, Moser Patterson & Sheridan L, February 15, 2005: US06854533 (63 worldwide citation)

The present invention generally relates to a method and an apparatus for drilling with casing. In one aspect, a method of drilling a wellbore with casing is provided, including placing a string of casing with a drill bit at the lower end thereof into a previously formed wellbore and urging the strin ...


3
Gregory G Galloway, David J Brunnert: Apparatus and method of drilling with casing. Weatherford Lamb, Moser Patterson & Sheridan, May 31, 2005: US06899186 (49 worldwide citation)

The present invention generally relates to methods for drilling a subsea wellbore and landing a casing mandrel in a subsea wellhead. In one aspect, a method of drilling a subsea wellbore with casing is provided. The method includes placing a string of casing with a drill bit at the lower end thereof ...


4
Joe Noske, David J Brunnert, David Pavel, Ramkumar K Bansal, David Haugen, Mike A Luke: Apparatus and methods for utilizing a downhole deployment valve. Weatherford Lamb, Patterson & Sheridan L, November 18, 2008: US07451809 (45 worldwide citation)

Methods and apparatus for utilizing a downhole deployment valve (DDV) to isolate a pressure in a portion of a bore are disclosed. The DDV system can include fail safe features such as selectively extendable attenuation members for decreasing a falling object's impact, a normally open back-up valve m ...


5
David M Haugen, Frederick T Tilton, Neil A A Simpson, Kevin L Gray, Robert Badrak, David J Brunnert: Methods and apparatus for forming a lateral wellbore. Weatherford Lamb, Moser Patterson & Sheridan L, March 25, 2003: US06536525 (42 worldwide citation)

The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the invention, a thermite containing apparatus is run into the wellbore on a wire line and a widow is subsequ ...


6
Richard L Giroux, Gregory G Galloway, Tuong Thanh Le, Raymond H Jackson, Gregory R Nazzal, James C Swarr, David J Brunnert, William M Beasley, Brent J Lirette, Albert C Odell, Jim Terry, Dave McKay, Samir Alkhatib, Mike Wardley: Apparatus and methods for drilling a wellbore using casing. Weatherford Lamb, Patterson & Sheridan, February 26, 2008: US07334650 (41 worldwide citation)

Apparatus and methods for drilling with casing. In an embodiment, methods and apparatus for deflecting casing using a diverter apparatus are disclosed. In another embodiment, the apparatus comprises a motor operating system disposed in a motor system housing, a shaft operatively connected to the mot ...


7
Richard L Giroux, Gregory G Galloway, David J Brunnert, Patrick G Maguire, Tuong Thanh Le, Albert C Odell II, David M Haugen, Frederick T Tilton, Brent J Lirette, Mark Murray, Peter Barnes Moyes: Methods and apparatus for wellbore construction and completion. Weatherford Lamb, Patterson & Sheridan, December 25, 2007: US07311148 (35 worldwide citation)

The present invention relates methods and apparatus for lining a wellbore. In one aspect, a drilling assembly having an earth removal member and a wellbore lining conduit is manipulated to advance into the earth. The drilling assembly includes a first fluid flow path and a second fluid flow path. Fl ...


8
Richard L Giroux, David J Brunnert, Gregory Guy Galloway, John C Jordan: Single-direction cementing plug. Weatherford Lamb, Patterson & Sheridan, October 31, 2006: US07128154 (32 worldwide citation)

The present invention generally relates to apparatus and methods for completing a well. Particularly, the present invention relates to a single-direction plug for use with cementing applications and with drilling with casing applications. One embodiment comprises a cement plug for installation in a ...


9
David M Haugen, Frederick T Tilton, Neil A A Simpson, Kevin L Gray, Robert Badrak, David J Brunnert: Methods and apparatus for forming a lateral wellbore. Weatherford Lamb, Moser Patterson & Sheridan L, March 23, 2004: US06708762 (31 worldwide citation)

The present invention discloses and claims methods and apparatus for forming an opening or a window in a downhole tubular for the subsequent formation of a lateral wellbore. In one aspect of the invention, a thermite containing apparatus is run into the wellbore on a wire line and a widow is subsequ ...


10
David J Brunnert, Thurman B Carter, David M Haugen, Gary D Ingram, David W Teale: Apparatus to actuate a downhole tool. Weatherford Lamb, Moser Patterson & Sheridan L, April 2, 2002: US06364037 (29 worldwide citation)

The invention provides an apparatus for actuating a downhole tool by utilizing a pressure differential created by fluid flowing through a conduit. The conduit is in communication with a pressure sensing line that is selectively exposable to areas of the conduit having different pressures. By exposin ...