1
A Glen Edwards, David S Wesson, Emmet F Brieger: Apparatus for absorbing shock. Halliburton Company, James R Duzan, Michael L Lynch, April 4, 1989: US04817710 (129 worldwide citation)

The present invention includes devices for absorbing shock in a tool string within a borehole. These components may serve together in a variety of configurations to form a shock absorbing system. A longitudinal shock absorber is connected in the tool string. The longitudinal shock absorber includes ...


2
Philip M Snider, Joseph P Haney, Robert L Haney, David S Wesson, David A Cuthill: Apparatus and method for perforating and stimulating a subterranean formation. Marathon Oil Company, Jack L Hummel, Jack E Ebel, July 7, 1998: US05775426 (58 worldwide citation)

A method and apparatus for perforating and stimulating a subterranean formation which is penetrated by a well bore having casing positioned therein so as to establish fluid communication between the formation and the well bore. A shell, sheath or sleeve of propellant material is positioned so as to ...


3
Philip M Snider, David S Wesson: Apparatus and method for perforating and fracturing. Marathon Oil Company, Jack L Hummel, Jack E Ebel, February 4, 1997: US05598891 (50 worldwide citation)

An apparatus and method for perforating and fracturing subterranean formations to enhance fluid production. At least one unlined punch charge is loaded into at least one punch charge carrier, and the void spaces in the punch charge carrier are filled with sand. The punch charge carrier is assembled ...


4
David S Wesson: Apparatus and method for perforating and stimulating a subterranean formation. Marathon Oil Company, Jack E Ebel, January 8, 2002: US06336506 (46 worldwide citation)

A method and apparatus for perforating and stimulating a subterranean formation which is penetrated by a well bore having casing positioned therein so as to establish fluid communication between the formation and the well bore. Substantially rigid, flexible, or liquid propellant is interposed betwee ...


5
A Glen Edwards, David S Wesson, Emmet F Brieger: Method and apparatus for absorbing shock. Halliburton Company, James R Duzan, September 15, 1987: US04693317 (42 worldwide citation)

The present invention includes devices for absorbing shock in a tool string within a borehole. These components may serve together in a variety of configurations to form a shock absorbing system. A longitudinal shock absorber is connected in the tool string. The longitudinal shock absorber includes ...


6
Kevin R George, David S Wesson, John E Avila: Firing head for a perforating gun assembly. Halliburton Company, James R Duzan, L Wayne Beavers, November 13, 1990: US04969525 (40 worldwide citation)

A hydraulically actuated firing head for a tubing conveyed well perforating system includes an actuating piston responsive to a differential between tubing pressure and a sealed low pressure zone contained within the firing head. The actuating piston releases a firing piston which initiates a firing ...


7
Philip M Snider, Joseph P Haney, David S Wesson: Apparatus and method for stimulating a subterranean formation. Marathon Oil Company, Jack E Ebel, July 4, 2000: US06082450 (39 worldwide citation)

A method for stimulating a subterranean formation which is penetrated by a well bore having casing positioned therein so as to establish fluid communication between the formation and the well bore. Propellant is secured to the outer surface of a carrier having a plurality of apertures formed therein ...


8
Kevin R Manke, David S Wesson, Roger L Schultz: Pyrotechnic charge powered operating system for downhole tools. Halliburton Company, Tracy W Druce, Lucian Wayne Beavers, May 31, 1994: US05316087 (39 worldwide citation)

A downhole tool apparatus for use in a well includes a housing having a cylindrical chamber defined therein. A power piston is slidably disposed in the cylindrical chamber and divides the cylindrical chamber into first and second chamber portions on opposite sides of the power piston. First and seco ...


9
David S Wesson, Don Shewchenko: Full bore gun system and method. Owen Oil Tools, Charles D Gunter Jr, November 3, 1998: US05829538 (36 worldwide citation)

A tubing conveyed perforating apparatus is shown which includes a tubular assembly made up of a plurality of tubular sections. One or more elongate charge holders are located within the interior bore of the tubular assembly and carry explosive charges thereon. A firing head is carried on the tubular ...


10
Philip M Snider, David S Wesson, Lyle W Andrich: Apparatus and method for temporarily plugging a tubular. Jack L Hummel, Jack E Ebel, April 30, 1996: US05511617 (33 worldwide citation)

An apparatus and method for controlling the pressure at which a fluid is introduced into a well penetrating a subterranean formation. The apparatus comprises a blow out sub having a sealed chamber between two plugs. The chamber is filled with a fluid at a known pressure. Thus, the pressure required ...