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
Paul A Reinhardt, Douglas J Murray: Casing valve. Baker Hughes Incorporated, Rosenblatt & Associates, June 20, 1995: US05425424 (131 worldwide citation)

An apparatus and method for producing through a casing without perforation are disclosed. The casing can be rotated while it is cemented and includes a multiplicity of sliding sleeve valves. Each of the valves selectively covers a plurality of pistons, each of which preferably has a rupture disc mou ...


3
Venditto James J, Stepp Lee Wayne, Szarka David D: Sliding sleeve casing tool.. Halliburton Co, January 11, 1995: EP0633391-A2 (109 worldwide citation)

A sliding sleeve casing tool apparatus (10) for use in a casing string in a wellbore comprises a housing (58), a communication port (64) and a sliding sleeve (70) to open and close port (64). A radioactive source (146) is attached to the housing (58), and the orientation of the source may be determi ...


4
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 ...


5
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 ...


6
David D Szarka, Lee W Stepp: Coiled tubing operated full opening completion tool system. Halliburton Company, Stephen R Christian, Neal R Kennedy, January 17, 1995: US05381862 (39 worldwide citation)

A coiled tubing operated full opening completion tool system for use in a well bore. The tool system comprises a completion tool, such as a casing valve, disposed in a well casing. The tool system further comprises a positioner tool for opening and closing a sliding sleeve in the casing valve. A hyd ...


7
David D Szarka: Short stroke casing valve with positioning and jetting tools therefor. Halliburton Company, James R Duzan, Neal R Kennedy, July 5, 1994: US05325917 (39 worldwide citation)

A short stroke casing valve with positioning and jetting tools therefor. The casing valve has a sliding sleeve within a housing. The housing defines a housing communication port therethrough, and a seal is disposed on longitudinally opposite sides of the housing communication port. The sleeve has a ...


8
Brandell John T, Szarka David D, Sullaway Bob L: Casing valve.. Halliburton Co, May 15, 1991: EP0427422-A2 (23 worldwide citation)

A casing valve for use in a well comprises an outer housing (50) having a longitudinal passageway (52) defined therethrough and having a housing wall (54) with a housing communication port (56) defined through said housing wall, said housing including a first disintegratable plug (96) initially bloc ...


9
Alva B Winters: Emergency respirator. Stephen D Carver, J L Mahurin, July 13, 1993: US05226412 (12 worldwide citation)

An Emergency Respirator of a half mask type for in-home or institutional use including a filtration canister housing two carbon elements and two fiberglass elements. The canister is preferably constructed of stamped sheet aluminum or plastic held together by a split U-shaped retaining ring or snap f ...


10
Atsushi Ohmi: Power assist mechanism. Aisin Seiki Kabushiki Kaisha, Oblon Fisher Spivak McClelland & Maier, June 9, 1981: US04271670 (12 worldwide citation)

A brake booster mechanism comprising a casing, one or more pressure responsive power walls in the casing, valve mechanism associated with the power wall and being movable relative thereto to control the differential pressure across the power wall, an actuating member connecting the pedal for manuall ...