John W Rodgers

US Patent:

8256516, Sep 4, 2012

Filed:

May 20, 2009

Appl. No.:

12/469594

Inventors:

John P. Rodgers - Roanoke TX, US

Assignee:

Starboard Innovations, LLC - Roanoke TX

International Classification:

E21B 17/07
E21B 29/00
F16F 7/12

US Classification:

166297, 166 55, 1662427, 166376, 175321, 188376, 188377, 267137

Abstract:

A system and a method provide a downhole mechanical energy absorber that protects downhole tools from impact loads and shock loads that occur during run-in contacts, tool drops, perforating blasts, and other impact events. A continuous localized inelastic deformation of a tube is a primary energy absorber in a load limiting design of the downhole mechanical energy absorber.

US Patent:

8393393, Mar 12, 2013

Filed:

Dec 14, 2011

Appl. No.:

13/325726

Inventors:

John P. Rodgers - Roanoke TX, US
Marco Serra - Winterthur, CH
Timothy S. Glenn - Dracut MA, US
John D. Burleson - Denton TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 43/11

US Classification:

166297, 166 551, 175 2, 89 115, 102302

Abstract:

A method of mitigating perforating effects produced by well perforating can include causing a shock model to predict perforating effects for a proposed perforating string, optimizing a compliance curve of at least one proposed coupler, thereby mitigating the perforating effects for the proposed perforating string, and providing at least one actual coupler having substantially the same compliance curve as the proposed coupler. A well system can comprise a perforating string including at least one perforating gun and multiple couplers, each of the couplers having a compliance curve, and at least two of the compliance curves being different from each other. A method of mitigating perforating effects produced by well perforating can include interconnecting multiple couplers spaced apart in a perforating string, each of the couplers having a compliance curve, and selecting the compliance curves based on predictions by a shock model of shock generated by the perforating string.

US Patent:

8397800, Mar 19, 2013

Filed:

Dec 14, 2011

Appl. No.:

13/325866

Inventors:

John P. Rodgers - Roanoke TX, US
John D. Burleson - Denton TX, US
Marco Serra - Winterhur, CH
Timothy S. Glenn - Dracut MA, US
Edwin A. Eaton - Grapevine TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 43/11
E21B 17/07

US Classification:

166 55, 166178, 1662421, 166297, 175 2

Abstract:

A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.

US Patent:

8397814, Mar 19, 2013

Filed:

Dec 14, 2011

Appl. No.:

13/325909

Inventors:

John P. Rodgers - Roanoke TX, US
Timothy S. Glenn - Dracut MA, US
Marco Serra - Winterthur, CH
Edwin A. Eaton - Grapevine TX, US
John D. Burleson - Denton TX, US

Assignee:

Halliburton Energy Serivces, Inc. - Houston TX

International Classification:

E21B 43/11
E21B 29/02
E21B 17/02

US Classification:

166297, 166 55, 175 452

Abstract:

A bending shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler. A bending compliance of the de-coupler may substantially increase between the connectors. A well system can include a perforating string including at least one perforating gun and multiple bending shock de-couplers, each of the de-couplers having a bending compliance, and at least two of the bending compliances being different from each other. A perforating string can include a bending shock de-coupler interconnected longitudinally between two components of the perforating string. A bending compliance of the bending shock de-coupler may substantially decrease in response to angular displacement of one of the components a predetermined amount relative to the other component.

US Patent:

8408286, Apr 2, 2013

Filed:

Jun 13, 2012

Appl. No.:

13/495035

Inventors:

John P. Rodgers - Roanoke TX, US
John D. Burleson - Denton TX, US
Marco Serra - Winterthur, CH
Timothy S. Glenn - Dracut MA, US
Edwin A. Eaton - Grapevine TX, US

Assignee:

Halliburton Energy Services, Inc. - Houston TX

International Classification:

E21B 43/11
E21B 17/07

US Classification:

166 55, 166178, 1662421, 166297, 175 2

Abstract:

A shock de-coupler for use with a perforating string can include perforating string connectors at opposite ends of the de-coupler, a longitudinal axis extending between the connectors, and a biasing device which resists displacement of one connector relative to the other connector in both opposite directions along the longitudinal axis, whereby the first connector is biased toward a predetermined position relative to the second connector. A perforating string can include a shock de-coupler interconnected longitudinally between components of the perforating string, with the shock de-coupler variably resisting displacement of one component away from a predetermined position relative to the other component in each longitudinal direction, and in which a compliance of the shock de-coupler substantially decreases in response to displacement of the first component a predetermined distance away from the predetermined position relative to the second component.

US Patent:

20120152519, Jun 21, 2012

Filed:

Nov 23, 2011

Appl. No.:

13/304075

Inventors:

John RODGERS - Roanoke TX, US
Marco SERRA - Winterthur, CH
David SWENSON - Crossroads TX, US
Eugene LINYAEV - Houston TX, US
Timothy S. GLENN - Dracut MA, US
Cam LE - Houston TX, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

E21B 47/12

US Classification:

166 66

Abstract:

A shock sensing tool for use with well perforating can include a generally tubular structure which is fluid pressure balanced, at least one strain sensor which senses strain in the structure, and a pressure sensor which senses pressure external to the structure. A well system can include a perforating string including multiple perforating guns and at least one shock sensing tool, with the shock sensing tool being interconnected in the perforating string between one of the perforating guns and at least one of: a) another of the perforating guns, and b) a firing head.

US Patent:

20120158388, Jun 21, 2012

Filed:

Aug 15, 2011

Appl. No.:

13/210303

Inventors:

John RODGERS - Roanoke TX, US
Marco SERRA - Winterthur, CH
David SWENSON - Crossroads TX, US
Timothy S. GLENN - Dracut MA, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

G06G 7/48

US Classification:

703 10

Abstract:

A method of utilizing a shock model for prediction of perforating effects can include recording measurements of the perforating effects on an actual perforating string in a wellbore, adjusting the shock model so that predictions of the perforating effects output by the shock model substantially match the measurements of the perforating effects, and causing the adjusted shock model to predict the perforating effects for a proposed perforating string. A method of predicting perforating effects on a perforating string in a wellbore can include inputting a three dimensional well model and a three dimensional model of the perforating string into a shock model, and causing the shock model to predict the perforating effects on the perforating string.

US Patent:

20130048375, Feb 28, 2013

Filed:

Jun 11, 2012

Appl. No.:

13/493327

Inventors:

John P. RODGERS - Roanoke TX, US
Timothy S. GLENN - Dracut MA, US
Marco SERRA - Winterthur, CH
Edwin A. EATON - Grapevine TX, US
John D. BURLESON - Denton TX, US
John H. HALES - Choctaw OK, US

Assignee:

HALLIBURTON ENERGY SERVICES, INC. - Houston TX

International Classification:

E21B 43/116

US Classification:

175 46

Abstract:

A perforating gun can include at least one explosive component, and a shock mitigation device including a shock reflector which indirectly reflects a shock wave produced by detonation of the explosive component. Another perforating gun can include a gun housing, at least one explosive component, and a shock mitigation device in the gun housing. The shock mitigation device can include a shock attenuator which attenuates a shock wave produced by detonation of the explosive component. Yet another perforating gun can include a shock mitigation device with an explosive material which produces a shock wave that interacts with another shock wave produced by detonation of an explosive component in a gun housing.