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
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 ...


3
A Glen Edwards, Klaus B Huber: Apparatus and method for orienting a downhole tool in a horizontal or deviated well. Schlumberger Technology Corporation, Jeffrey E Griffin, Gordon G Waggett, John J Ryberg, October 12, 1999: US05964294 (40 worldwide citation)

A tool for performing a downhole function in a horizontal or highly deviated well has a downhole structure with a longitudinal axis and constructed to turn about the axis in response to a moment applied about the axis. The structure includes at least one ballast chamber containing a flowable inert b ...


4
A Glen Edwards, Joe C Hromas, Klaus B Huber, Edward G Smith Jr: Shock absorber for use in a wellbore including a frangible breakup element preventing shock absorption before shattering allowing shock absorption after shattering. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, November 22, 1994: US05366013 (38 worldwide citation)

A shock absorber, adapted to be disposed above a perforating gun in a tool string and adapted to be disposed in a wellbore, includes a crushable element disposed between an inner and outer housing, a frangible breakup element, and a detonating cord disposed within the frangible breakup element and c ...


5
Joe C Hromas, A Glen Edwards, Klaus B Huber: Hydrostatic setting tool including a selectively operable apparatus initially blocking an orifice disposed between two chambers and opening in response to a signal. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, September 15, 1992: US05146983 (37 worldwide citation)

A hydrostatic setting tool, adapted for setting an anchored device in a wellbore, includes a housing having a pair of ports exposed to well fluid at hydrostatic pressure. The ports lead to a shoulder of a setting mandrel. A barrier is disposed diametrically across the setting tool and an oil chamber ...


6
A Glen Edwards, Klaus B Huber: Method of performing downhole functions. Schlumberger Technology, Trop Pruner & Hu PC, March 12, 2002: US06354374 (36 worldwide citation)

A downhole device and method for performing a function in a well. The device has a series of dedicated hydro-mechanical locks that prevent occurrence of an associated function. The hydro-mechanical locks are capable of being released directly by a respective elevated hydraulic activating pressure co ...


7
Wenbo Yang, Alfredo Fayard, Robert A Parrott, Klaus B Huber, Jeffrey P Meisenhelder, A Glen Edwards, Steven W Henderson, Joseph B Edone, Wanchai Ratanasirigulchai, Manuel Gonzalez: Method and apparatus for orienting perforating devices and confirming their orientation. Schlumberger Technology Corporation, Van Someren PC, Bryan P Galloway, Jaime A Castano, February 21, 2006: US07000699 (35 worldwide citation)

The present invention provides an apparatus and method of orienting perforating gun strings. One embodiment of the present invention provides an orienting weight provided in a portion of the perforating device, such as the shaped charge, the loading tube or the gun housing. Additional weight may be ...


8
Klaus B Huber, A Glen Edwards, Thomas M Sayers, Edward G Smith Jr: Firing head connected between a coiled tubing and a perforating gun adapted to move freely within a tubing string and actuated by fluid pressure in the coiled tubing. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, April 9, 1996: US05505261 (35 worldwide citation)

A firing head adapted to connected between a coiled tubing and a perforating gun, is sized and shaped to enable it to move freely within a tubing string in the wellbore, may be actuated by fluid pressure within the coiled tubing, and includes a circulation and recirculation feature wherein wellbore ...


9
David S Wesson, A Glen Edwards, Flint R George, Kevin R George, Emmert F Brieger: Surging fluids downhole in an earth borehole. Halliburton Company, James R Duzan, April 21, 1987: US04658902 (28 worldwide citation)

Systems and methods for surging fluid downhole in an earth borehole, as well as tools especially adapted for use in such systems and methods, are disclosed. In a system for surging fluids, upper and lower valves both operated through the use of annulus pressure define the upper and lower extremities ...


10
A Glen Edwards, Joe C Hromas, Klaus B Huber: Explosively opened production valve including a frangible breakup element operated by tubing pressure or rathole pressure or both. Schlumberger Technology Corporation, Henry N Garrana, John H Bouchard, June 7, 1994: US05318126 (26 worldwide citation)

A production valve includes an outer housing having a production port, a piston disposed within the outer housing and adapted to move from one position to another position, a frangible breakup element supporting the piston in the one position, and a detonating cord adapted for propagating a detonati ...