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 ...

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 ...

John T Brandell, Richard L Giroux: Sliding sleeve casing tool. Halliburton Company, James R Duzan, November 14, 1989: US04880059 (66 worldwide citation)

A sliding sleeve casing tool installed in a casing string comprising a housing, sliding sleeve, seal members and releasable retaining means to retain the sliding sleeve within the desired locations with the housing.

Richard L Giroux, John T Brandell: Wedge lock ring. Halliburton Company, James R Duzan, L Wayne Beavers, January 12, 1993: US05178216 (61 worldwide citation)

A wedge lock ring apparatus includes an outer housing having a housing bore with a housing groove defined therein. The housing groove has at least one and preferably has upper and lower housing groove tapered sides. An inner sleeve has a cylindrical outer surface with a sleeve groove defined therein ...

Iosif J Hriscu, Don S Folds, Gregory W Vargus, Thomas W Hawkins, John T Brandell: Multiple zones frac tool. Halliburton Energy Services, John W Wustenberg, Warren B Kice, James R Bell, May 24, 2005: US06896061 (55 worldwide citation)

A device and a method are provided for the hydraulic fracturing of multiple zones in a well bore. A stinger carries a plurality of packers into a well bore. Each packer is separably connected to each adjacent packer. As each packer is sequentially secured in the well bore, the stinger is withdrawn f ...

John T Brandell, T Austin Freeman: Packer for use in, and method of, cementing a tubing string in a well without drillout. Halliburton Company, James R Duzan, E Harrison Gilbert III, June 2, 1992: US05117910 (50 worldwide citation)

A packer apparatus, particularly a cup type casing packer shoe, includes a pressure-actuated closing sleeve and pressure-actuated pumpout seats. An upper pumpout seat moves with the closing sleeve in response to a first pressure so that the closing sleeve closes ports through which fluid is communic ...

John T Brandell: Casing packer shoe. Halliburton Company, James R Duzan, E Harrison Gilbert III, October 9, 1990: US04961465 (46 worldwide citation)

A cup type formation packer shoe is provided to be used in well cementing operations for cementing either casing or tubing in existing casing in a well bore. This packer shoe includes packer cups which are forced into sealing engagement with the existing casing by the cement being displaced into the ...

Steven G Streich, John T Brandell, Charles F VanBerg: Knife gate valve stage cementer. Halliburton Company, James R Duzan, Shawn Hunter, April 5, 1994: US05299640 (37 worldwide citation)

Methods and apparatus are described which permit stage cementing within a well bore by means of a well tool which includes a cementer having cementing ports which may be responsively opened and closed by means of a knife gate valve. The knife gate valve is disposed within the housing between outer a ...

Steven G Streich, John T Brandell, Richard L Giroux, Lee W Stepp: Stage cementer and inflation packer apparatus. Halliburton Company, James R Duzan, Neal R Kennedy, May 24, 1994: US05314015 (32 worldwide citation)

A stage cementer and inflation packer apparatus. The apparatus comprises a mandrel with an external closing sleeve and an operating sleeve interlocked therewith. Below the operating sleeve is an opening sleeve. The opening sleeve is mechanically acutated by a pump-down plug in a plug-operated embodi ...

John T Brandell: Down hole pump and testing apparatus. Halliburton Company, John H Tregoning, James R Duzan, Lucian Wayne Beavers, January 27, 1981: US04246964 (31 worldwide citation)

A downhole testing apparatus has a modular construction including a pump assembly, a screen assembly, a first packer assembly, an intake port assembly, and a second packer assembly. The pump assembly includes an improved ratchet assembly for opening and closing a relief port of a discharge passage o ...