1
David D Szarka, Bob L Sullaway, John T Brandell, Steven L Schwegman: Well completions using casing valves. Halliburton Company, James R Duzan, L Wayne Beavers, August 21, 1990: US04949788 (162 worldwide citation)

A well is completed by cementing a casing string in place in the well. A jetting tool assembly is run into the casing string on a tubing string. The jetting tool assembly engages a sliding sleeve of a casing valve and slides the sliding sleeve to an open position uncovering a plurality of housing po ...


2
Abbas A Daneshy, David D Szarka: Well completion method. Halliburton Company, Robert A Kent, Dennis D Brown, December 27, 1994: US05375661 (147 worldwide citation)

A well completion method comprising the steps of: (1) positioning a conduit in a wellbore such that (a) a wellbore annulus surrounding the conduit is defined between the conduit and the wall of the wellbore, (b) the wellbore annulus has a first longitudinal segment which is positioned within a produ ...


3
Jim B Surjaatmadja, Steven L Holden, David D Szarka: Well jetting apparatus. Halliburton Company, Stephen R Christian, Neal R Kennedy, February 27, 1996: US05494103 (134 worldwide citation)

A well jetting apparatus for use in fracturing of a well. Fracture initiation is provided by forming openings through the well casing and then forming fan-shaped slots in the formation surrounding the casing. Those slots are formed by a the jetting apparatus which has at least one hydraulic jet dire ...


4
Jim B Surjaatmadja, Steven L Holden, David D Szarka: Well jetting apparatus and met of modifying a well therewith. Halliburton Company, Stephen R Christian, Neal R Kennedy, November 8, 1994: US05361856 (114 worldwide citation)

A well jetting apparatus for use in fracturing of a well. Fracture initiation is provided by forming openings through the well casing and then forming fan-shaped slots in the formation surrounding the casing. Those slots are formed by a the jetting apparatus which has at least one hydraulic jet dire ...


5
Bobby L Sullaway, David D Szarka: Reverse-cementing method and apparatus. Halliburton Energy Services, Craig W Roddy, Anthony L Rahhal, June 12, 2001: US06244342 (85 worldwide citation)

The present invention relates to reverse-cementing apparatus. The reverse-cementing apparatus is a float apparatus connected in a pipe string to be cemented into a wellbore. The float apparatus includes an outer housing connected to the casing string. A check valve for preventing flow from the wellb ...


6
James J Venditto, Lee W Stepp, David D Szarka: Fracture oriented completion tool system. Halliburton Company, Stephen R Christian, Neal R Kennedy, March 7, 1995: US05394941 (83 worldwide citation)

A fracture oriented completion tool system for use in a casing string in a wellbore. The completion tool comprises a casing valve having a radioactive source therein, the orientation of which may be determined by use of a detector apparatus, such as a rotational gamma ray detector. The casing valve ...


7
Steven G Streich, Mike Navarette, Jimmie D Weaver, Richard L Giroux, David D Szarka: Apparatus and method for opening perforations in a well casing. Halliburton Energy Services, Robert A Kent, Neal R Kennedy, August 1, 2000: US06095247 (77 worldwide citation)

An apparatus for opening perforations in a casing string. The casing string has a special casing section defining a plurality of holes therethrough. Rupturable ceramic discs or inserts are disposed in said holes and retained therein. The ceramic discs or inserts are adapted to withstand the fluid di ...


8
David D Szarka: Apparatus for setting a high temperature packer. Halliburton Company, James R Duzan, October 6, 1987: US04697640 (73 worldwide citation)

Apparatus for sealing a well bore annulus. A mandrel includes non-elastomeric packer elements disposed thereabout. A first annular piston is received about the mandrel and is slidable upwardly against the packer elements to seal the same in a well bore. A bi-directional slip assembly is disposed abo ...


9
John T Brandell, David D Szarka, Bob L Sullaway: Casing valve. Halliburton Company, James R Duzan, L Wayne Beavers, February 12, 1991: US04991654 (72 worldwide citation)

A casing valve includes an outer housing with a sliding sleeve. First and second seals define a sealed annulus within the housing. A latch is disposed in the sealed annulus for latching the sliding sleeve in its first and second positions. The housing has a plurality of housing ports defined therein ...


10
David D Szarka: Plug systems and methods for using plugs in subterranean formations. Halliburton Energy Services, John W Wustenberg, Baker Botts L, February 27, 2007: US07182135 (68 worldwide citation)

A method and plug for separating fluids in subterranean wells is provided. The plug enters a passage at an interface of successively introduced fluids. The plug comprises an outer body and a detachable inner mandrel attached to the outer body. An Assembly comprising a plurality of plugs may also be ...