Allen J Lindfors

US Patent:

6557636, May 6, 2003

Filed:

Jun 29, 2001

Appl. No.:

09/896430

Inventors:

Edward Paul Cernocky - Houston TX
Allen J. Lindfors - Inyokern CA

Assignee:

Shell Oil Company - Houston TX

International Classification:

E21B 43117

US Classification:

166297, 166 551

Abstract:

A method and apparatus for perforating tubular members coaxial outside and inside surfaces with a continuous wall extending therebetween attaches at least one explosive charge in direct contact with the wall of the tubular with at least one detonation device in communication with the explosive device. A control station in wireless and cableless communication with the at least one detonation device selects from radio waves, infrared waves, acoustic waves, optical light waves, seismic waves, and combinations thereof to activate the at least one detonation device.

US Patent:

6962202, Nov 8, 2005

Filed:

Jan 9, 2003

Appl. No.:

10/339225

Inventors:

Matthew Robert George Bell - Houston TX, US
Eugene Murphy - Houston TX, US
Edward Paul Cernocky - Mandeviille LA, US
Christopher Burres - Houston TX, US
Aron Ekelund - Houston TX, US
Allen Lindfors - Inyokern CA, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

E21B043/117
E21B043/1185
F42B001/02
F42B003/02

US Classification:

166297, 166 55, 166299, 175 455, 102320, 102308, 102310, 102476

Abstract:

Disclosed is a casing conveyed perforating apparatus and method for externally perforating a wellbore casing. The perforating apparatus is attached to the outside of the casing and is conveyed along with the casing when it is inserted into the wellbore. The perforation is accomplished using two groups of charges, which are contained in protective pressure chambers. Each pressure chamber is positioned radially around the outside of the wellbore casing. The pressure chambers form longitudinally extending ribs, which conveniently serve to center the casing within the wellbore. One group of charges is aimed inward in order to perforate the casing. A second group is aimed outward in order to perforate the formation. In an alternative embodiment, only one group of bi-directional charges is provided.

US Patent:

7284489, Oct 23, 2007

Filed:

Jul 29, 2004

Appl. No.:

10/902203

Inventors:

Matthew Robert George Bell - Houston TX, US
Eugene Murphy - Houston TX, US
Edward Paul Cernocky - Mandeviille LA, US
Christopher Burres - Houston TX, US
Aron Ekelund - Houston TX, US
Allen Lindfors - Inyokern CA, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

F42B 1/02
F42B 3/02
E21B 43/117
E21B 43/1185

US Classification:

102319, 102310, 102313, 102320, 166297, 166 55, 166299, 175 2, 175 455, 89 115

Abstract:

Disclosed is a device and method for externally perforating a well-bore casing. The perforating apparatus is attached to the outside of the casing itself and is conveyed along with the casing when it is inserted into the well bore. The perforation is accomplished using two groups of charges which are contained in protective pressure chambers which are arranged radially around the outside of the wellbore casing. The pressure chambers form longitudinally extending ribs which conveniently serve to center the casing within the well bore. One group of charges is aimed inward in order to perforate the casing. A second group is aimed outward in order to perforate the formation. In an alternative embodiment, only one group of bi-directional charges is provided.

US Patent:

7284601, Oct 23, 2007

Filed:

Jul 29, 2004

Appl. No.:

10/902209

Inventors:

Matthew Robert George Bell - Houston TX, US
Eugene Murphy - Houston TX, US
Edward Paul Cernocky - Mandeviille LA, US
Christopher Burres - Houston TX, US
Aron Ekelund - Houston TX, US
Allen Lindfors - Inyokern CA, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

E21B 43/116
F42B 3/02

US Classification:

166 55, 175 2, 102321, 102319

Abstract:

Disclosed is a device and method for externally perforating a well-bore casing. The perforating apparatus is attached to the outside of the casing itself and is conveyed along with the casing when it is inserted into the well bore. The perforation is accomplished using two groups of charges which are contained in protective pressure chambers which are arranged radially around the outside of the wellbore casing. The pressure chambers form longitudinally extending ribs which conveniently serve to center the casing within the well bore. One group of charges is aimed inward in order to perforate the casing. A second group is aimed outward in order to perforate the formation. In an alternative embodiment, only one group of bi-directional charges is provided.

US Patent:

7350448, Apr 1, 2008

Filed:

May 22, 2006

Appl. No.:

11/419707

Inventors:

Matthew Robert George Bell - Houston TX, US
Eugene Murphy - Houston TX, US
Edward Paul Cernocky - Mandeville LA, US
Christopher Burres - Houston TX, US
Aron Ekelund - Houston TX, US
Allen Lindfors - Inyokern CA, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

E21B 43/1185

US Classification:

89 115, 102207, 166 63, 175 455, 175 46

Abstract:

A firing assembly for activating a perforating device comprising a module having a first chamber and a second chamber. The firing assembly comprises a firing head for transferring ballistic energy to the perforating device, said firing head having a detonator and a plurality of ballistic charges, said detonator coupled to at least one of said first gun assembly and said second gun assembly a remote telemetry device for sending a detonation signal, a transmission medium for transmitting said detonation signal to said firing head, and a receiving device for receiving said detonation signal and a processor for interpreting said detonation signal and activating said detonator.

US Patent:

7975592, Jul 12, 2011

Filed:

Sep 6, 2005

Appl. No.:

11/220064

Inventors:

Matthew Robert George Bell - Houston TX, US
Eugene Murphy - Houston TX, US
Edward Paul Cernocky - Mandeviille LA, US
Christopher Burres - Houston TX, US
Aron Ekelund - Houston TX, US
Allen Lindfors - Inyokern CA, US

Assignee:

Shell Oil Company - Houston TX

International Classification:

E21B 43/1185

US Classification:

89 115, 175 455

Abstract:

An apparatus for perforating a casing string including a first module and a second module, each including a gun assembly. The first module is positioned longitudinally adjacent the second module on the casing string. Each module contains a firing assembly for igniting the gun assembly in the first module, a remote signaler to remotely detonate the firing assembly, and ballistic transfer assembly for igniting the gun assembly in the second module. The ballistic transfer assembly includes a booster charge.

US Patent:

20030000411, Jan 2, 2003

Filed:

Jun 29, 2001

Appl. No.:

09/896432

Inventors:

Edward Cernocky - Houston TX, US
Allen Lindfors - Inyokern CA, US

International Classification:

F42C001/00
C06C005/00

US Classification:

102/200000

Abstract:

A method and apparatus for detonating explosive charges wherein at least one explosive charge is in contact with the outside surface of a wall with a detonation device in communication with each explosive device. The detonation device includes a programmable logic interface to arm and fire the detonation device in response to receipt of a coded signal from a control station in wireless and cableless communication with the programmable logic interface.

US Patent:

20030001753, Jan 2, 2003

Filed:

Jun 29, 2001

Appl. No.:

09/896433

Inventors:

Edward Cernocky - Houston TX, US
Allen Lindfors - Inyokern CA, US

International Classification:

G01V003/00

US Classification:

340/853100, 340/853200

Abstract:

A method and apparatus for wireless and cableless communication between a control station and a remote unit downhole uses the tubular of the well as a waveguide. The downhole portion includes a receiver, a programmable logic interface and means responsive to receipt of a control signal for initiating an action, such as detonation of at least one explosive charge.