JERRY DON WALKER, D.C.
Radiology at Boland St, Fort Worth, TX

6758124, Jul 6, 2004

Mar 14, 2002

10/097342

James Barker - Mansfield TX
Jerry Walker - Fort Worth TX

Halliburton Energy Services, Inc. - Carrollton TX

F42B 102

89 115, 102310, 102312, 175 451, 175 455, 175 46

A unique phasing pattern is provided that maximizes the effective perforation geometry of a wellbore. The improvement overcomes the problems associated with multi-phase guns of the past that failed to account for the fact that the gun rested on the low side of the casing. In one embodiment of the present invention, the phasing is arranged so that there is a zero phase tunnel formed. The zero phase tunnel is located at approximately the location where the gun rests against the low side of the well. Further, tunnels are formed by shape charges at plus and minus forty-five degrees and at plus and minus ninety degrees. This can also be referred to as a penta-phase. In another embodiment of the invention, charges can also be placed to allow for a plus and minus one hundred and thirty-five degrees pattern in addition to the penta-phase pattern described above. This expanded pattern can also be referred to as a hepta-phase pattern. By improving the phasing pattern of the perforation gun, valuable hydrocarbon fluids will encounter less resistance to flow into the well.

5701964, Dec 30, 1997

May 22, 1996

8/651229

Jerry L. Walker - Fort Worth TX
James P. Lawson - Mansfield TX
Bennie C. Gill - Burleson TX

Halliburton Energy Services, Inc. - Houston TX

E21B 43116

175 46

A through-tubing perforating gun and method is provided. The assembly comprises an elongated carrier strip, a plurality of perforating charges, and means for connecting the plurality of charges to the carrier strip. Each of the charges has a focal axis along which a shaped charge explosion occurs in a firing direction when the charge is actuated for use in perforating the casing wall, a cross-section that fits within a circle defined by the smallest inner diameter of the well tubing through which the assembly is intended to pass, and a detonating cord receiving means. The means for connecting the plurality of charges to the carrier strip is such that: the cross-sections of the plurality of charges substantially overlap along the line extending parallel to the length of the carrier strip, whereby the overall cross-section of the assembly fits within a circle defined by the smallest inner diameter of the well tubing through which the assembly is intended to pass; and at least one of the plurality of charges has its focal axis angularly displaced at least about 30 degrees relative to the focal axis of the next adjacent perforating charge; and the focal axis of any one of the plurality of perforating charges is angularly displaced from the focal axis of the next adjacent perforating charge no more than about 80 degrees. The means for connecting can comprise a mounting clip. More preferably, the clip is mountable to the strip in two orientations.

7430965, Oct 7, 2008

Oct 8, 2004

10/961703

Jerry L. Walker - Fort Worth TX, US

Halliburton Energy Services, Inc. - Houston TX

F42B 1/02, E21B 43/116

102310, 102313, 102321, 89 115, 175 46, 175 455

A perforating apparatus () includes a plurality of shaped charges () each having an initiation end and a discharge end. A detonating cord () is operably coupled to the initiation ends of the shaped charges (). A carrier () contains the shaped charges (). The carrier () includes at least one discharge location corresponding to the discharge ends of the shaped charges () when the perforating apparatus () is in its operable position. The discharge location has first and second material layers () wherein the second material layer () exhibits resilient recovery such that an opening created by a jet formed from detonating one of the shaped charges () in the second material layer () is smaller than an opening created by the jet in the first material layer (), thereby retaining debris in the perforating apparatus () with the second material layer ().

H16756, Sep 2, 1997

Jul 22, 1996

8/684719

James M. Barker - Mansfield TX
Jerry L. Walker - Fort Worth TX
Robert S. Riggs - Granbury TX

Halliburton Company - Dallas TX

F42C 1000, E21B 2900

166297

An improved capsule-type charge for use in perforating high temperature production zones in oil or gas wells is disclosed. The improvement consists of using a secondary initiating compound as an initiator, such as 1,3,5-Trinitro-2,4,6-Tripicrylbenzene or 2,2',2",4,4',4",6,6',6",-Nonanitroterphenyl. These initiators work well with commercially available high temperature explosives, such as PYX.

5590723, Jan 7, 1997

Sep 22, 1994

8/311284

Jerry L. Walker - Fort Worth TX
Victor M. Carrera - Fort Worth TX
Donald R. Carter - Burleson TX

Halliburton Company - Houston TX

E21B 43116

175 46

The invention provides a new strip carrier assembly for carrying shaped charges, such as is particularly useful in perforating guns as are utilized to perforate oil and gas wells. The strip carrier includes a coupling member which couples adjacent strip carrier members together to form a contiguous assembly, and which further provides mounting system for a shaped charge so as to maintain uniform spacing even across the coupling junction. Additionally, the carrier assembly includes a novel tab assembly which cooperates with a charge carrier housing configuration to provide a single assemblage of parts which is capable of orienting shaped charges in any one of a plurality of desired orientations relative to the carrier strip.

4621396, Nov 11, 1986

Jun 26, 1985

6/749954

Jerry L. Walker - Fort Worth TX
Donald L. Crummett - Joshua TX
William C. Behling - Duncan OK

Jet Research Center, Inc. - Arlington TX
Halliburton Company - Duncan OK

B21D 5154, B23D 2114, E21B 700

29 13

Methods are provided for manufacturing a shaped charge carrier from a generally cylindrical thin wall tube. A plurality of flat areas are formed on the cylindrical tube, and an opening through the tube is associated with each of the flat areas for receiving a shaped charge therein.

7360599, Apr 22, 2008

Nov 18, 2004

10/992045

Jerry L. Walker - Fort Worth TX, US
Jim Gilbert - Rio Vista TX, US

Halliburton Energy Services, Inc. - Houston TX

E21B 43/116

166297, 166 55, 166 551, 175 46

A perforating apparatus () includes a plurality of shaped charges () each having a case, an initiation end and a discharge end. A detonating cord () is operably associated with the initiation ends of the shaped charges (). An energy absorbing charge holder () has a detonating cord receiving area to receive the detonating cord therein (). The energy absorbing charge holder () also has a plurality of charge receiving locations that closely receive the shaped charges () therein such that upon detonation of the shaped charges (), energy is transferred from the cases of the shaped charges () to the energy absorbing charge holder (), thereby reducing fragmentation of the cases.

4609057, Sep 2, 1986

Jun 26, 1985

6/749953

Jerry L. Walker - Fort Worth TX
Donald L. Crummett - Joshua TX
William C. Behling - Duncan OK

Jet Research Center, Inc. - Arlington TX
Halliburton Company - Duncan OK

E21B 43117

175 46

A shaped charge carrier for a perforating gun includes a generally cylindrical thin wall carrier tube, a plurality of flat areas formed on the carrier tube, and an opening through each of the flat areas for receiving a shaped charge therein.