Derek W. Logan

Person

Calgary, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Drill bit assembly having electrically isolated gap joint for elect...
- Patent number 9,109,403
- Issue date Aug 18, 2015
- Schlumberger Technology Corporation
- Derek Logan
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Drill bit assembly having electrically isolated gap joint for measu...
- Patent number 9,022,144
- Issue date May 5, 2015
- Schlumberger Technology Corporation
- Brian Clark
- G01 - MEASURING TESTING
Information Patent Grant
Drill bit assembly having aligned features
- Patent number 9,004,196
- Issue date Apr 14, 2015
- Schlumberger Technology Corporation
- Kjell Haugvaldstad
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Electromagnetic telemetry assembly with protected antenna
- Patent number 8,648,733
- Issue date Feb 11, 2014
- Schlumberger Technology Corporation
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Grant
Brush and brush housing arrangement to mitigate hydrodynamic brush...
- Patent number 8,624,464
- Issue date Jan 7, 2014
- Schlumberger Technology Corporation
- Anthony R. Dopf
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Electrical isolation connector for electromagnetic gap sub
- Patent number 8,308,199
- Issue date Nov 13, 2012
- Schlumberger Technology Corporation
- Paul L. Camwell
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Acoustic isolator
- Patent number 8,270,251
- Issue date Sep 18, 2012
- XAcT Downhole Telemetry Inc.
- Douglas S. Drumheller
- G01 - MEASURING TESTING
Information Patent Grant
Drill string telemetry methods and apparatus
- Patent number 8,115,651
- Issue date Feb 14, 2012
- XAcT Downhole Telemetry Inc.
- Paul L. Camwell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Electrical isolation connector for electromagnetic gap sub
- Patent number 7,900,968
- Issue date Mar 8, 2011
- Schlumberger Technology Corporation
- Paul L. Camwell
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Fluid erosion protection washer for rotating shaft in MWD tool
- Patent number 7,839,719
- Issue date Nov 23, 2010
- Schlumberger Technology Corporation
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Grant
Brush and brush housing arrangement to mitigate hydrodynamic brush...
- Patent number 7,821,178
- Issue date Oct 26, 2010
- Schlumberger Technology Corporation
- Paul L. Camwell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluid erosion protection washer for rotating shaft in MWD tool
- Patent number 7,532,540
- Issue date May 12, 2009
- Extreme Engineering Ltd.
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Grant
Multi-conductor plug and socket apparatus
- Patent number 7,462,957
- Issue date Dec 9, 2008
- Extreme Engineering Ltd.
- Paul L. Camwell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electromagnetic gap sub assembly
- Patent number 7,252,160
- Issue date Aug 7, 2007
- Weatherford/Lamb, Inc.
- Tony Dopf
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Apparatus for receiving downhole acoustic signals
- Patent number 6,956,791
- Issue date Oct 18, 2005
- XAcT Downhole Telemetry Inc.
- Anthony R. Dopf
- G01 - MEASURING TESTING
Information Patent Grant
Harsh environment rotatable connector
- Patent number 6,902,414
- Issue date Jun 7, 2005
- Extreme Engineering Ltd.
- Anthony R. Dopf
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Dynamic pressure device for oil drill systems
- Patent number 6,367,323
- Issue date Apr 9, 2002
- Ryan Energy Technologies, Inc.
- Paul L. Camwell
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subassembly electrical isolation connector for drill rod
- Patent number 6,158,532
- Issue date Dec 12, 2000
- Ryan Energy Technologies, Inc.
- Derek W. Logan
- E21 - EARTH DRILLING MINING
Information Patent Grant
Subassembly electrical isolation connector for drill rod
- Patent number 6,050,353
- Issue date Apr 18, 2000
- Ryan Energy Technologies, Inc.
- Derek W. Logan
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
Drill Bit Assembly Having Electrically Isolated Gap Joint for Measu...
- Publication number 20150101867
- Publication date Apr 16, 2015
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Brian Oliver Clark
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILL BIT ASSEMBLY HAVING ALIGNED FEATURES
- Publication number 20130032412
- Publication date Feb 7, 2013
- Kjell Haugvaldstad
- E21 - EARTH DRILLING MINING
Information Patent Application
DRILL BIT ASSEMBLY HAVING ELECTRICALLY ISOLATED GAP JOINT FOR ELECT...
- Publication number 20120085583
- Publication date Apr 12, 2012
- INVISTA NORTH AMERICA S.A.R.L.
- Derek Logan
- E21 - EARTH DRILLING MINING
Information Patent Application
Electromagnetic Telemetry Assembly With Protected Antenna
- Publication number 20110309949
- Publication date Dec 22, 2011
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Application
Brush And Brush Housing Arrangement To Mitigate Hydrodynamic Brush...
- Publication number 20110227447
- Publication date Sep 22, 2011
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Anthony R. Dopf
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Electrical Isolation Connector For Electromagnetic Gap Sub
- Publication number 20110036557
- Publication date Feb 17, 2011
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Paul L. Camwell
- E21 - EARTH DRILLING MINING
Information Patent Application
ACOUSTIC ISOLATOR
- Publication number 20100157741
- Publication date Jun 24, 2010
- XAcT Downhole Telemetry Inc.
- Douglas S. Drumheller
- G01 - MEASURING TESTING
Information Patent Application
Electrical Isolation Connector For Electromagnetic Gap Sub
- Publication number 20100043229
- Publication date Feb 25, 2010
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Paul L. Camwell
- E21 - EARTH DRILLING MINING
Information Patent Application
FLUID EROSION PROTECTION WASHER FOR ROTATING SHAFT IN MWD TOOL
- Publication number 20090224193
- Publication date Sep 10, 2009
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Application
Drill string telemetry methods and apparatus
- Publication number 20080253228
- Publication date Oct 16, 2008
- XAcT Downhole Telemetry Inc.
- Paul L. Camwell
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ELECTRICAL ISOLATION CONNECTOR FOR ELECTROMAGNETIC GAP SUB
- Publication number 20080191900
- Publication date Aug 14, 2008
- Extreme Engineering Ltd.
- Paul L. Camwell
- E21 - EARTH DRILLING MINING
Information Patent Application
Acoustic telemetry system optimization
- Publication number 20070257809
- Publication date Nov 8, 2007
- XAcT Downhole Telemetry Inc.
- Paul L. Camwell
- E21 - EARTH DRILLING MINING
Information Patent Application
Fluid erosion protection washer for rotating shaft in MWD tool
- Publication number 20070045583
- Publication date Mar 1, 2007
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Application
Brush and brush housing arrangement to mitigate hydrodynamic brush...
- Publication number 20060261701
- Publication date Nov 23, 2006
- Paul L. Camwell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Electromagnetic gap sub assembly
- Publication number 20050068703
- Publication date Mar 31, 2005
- Tony Dopf
- E21 - EARTH DRILLING MINING
Information Patent Application
HARSH ENVIRONMENT ROTATABLE CONNECTOR
- Publication number 20050070141
- Publication date Mar 31, 2005
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING
Information Patent Application
Multi-conductor plug and socket apparatus
- Publication number 20050052796
- Publication date Mar 10, 2005
- Paul L. Camwell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Apparatus for receiving downhole acoustic signals
- Publication number 20040145970
- Publication date Jul 29, 2004
- Extreme Engineering Ltd.
- Anthony R. Dopf
- E21 - EARTH DRILLING MINING

Derek W. Logan

Person

Patents Grantslast 30 patents

Drill bit assembly having electrically isolated gap joint for elect...

Drill bit assembly having electrically isolated gap joint for measu...

Drill bit assembly having aligned features

Electromagnetic telemetry assembly with protected antenna

Brush and brush housing arrangement to mitigate hydrodynamic brush...

Electrical isolation connector for electromagnetic gap sub

Acoustic isolator

Drill string telemetry methods and apparatus

Electrical isolation connector for electromagnetic gap sub

Fluid erosion protection washer for rotating shaft in MWD tool

Brush and brush housing arrangement to mitigate hydrodynamic brush...

Fluid erosion protection washer for rotating shaft in MWD tool

Multi-conductor plug and socket apparatus

Electromagnetic gap sub assembly

Apparatus for receiving downhole acoustic signals

Harsh environment rotatable connector

Dynamic pressure device for oil drill systems

Subassembly electrical isolation connector for drill rod

Subassembly electrical isolation connector for drill rod

Patents Applicationslast 30 patents

Drill Bit Assembly Having Electrically Isolated Gap Joint for Measu...

DRILL BIT ASSEMBLY HAVING ALIGNED FEATURES

DRILL BIT ASSEMBLY HAVING ELECTRICALLY ISOLATED GAP JOINT FOR ELECT...

Electromagnetic Telemetry Assembly With Protected Antenna

Brush And Brush Housing Arrangement To Mitigate Hydrodynamic Brush...

Electrical Isolation Connector For Electromagnetic Gap Sub

ACOUSTIC ISOLATOR

Electrical Isolation Connector For Electromagnetic Gap Sub

FLUID EROSION PROTECTION WASHER FOR ROTATING SHAFT IN MWD TOOL

Drill string telemetry methods and apparatus

ELECTRICAL ISOLATION CONNECTOR FOR ELECTROMAGNETIC GAP SUB

Acoustic telemetry system optimization

Fluid erosion protection washer for rotating shaft in MWD tool

Brush and brush housing arrangement to mitigate hydrodynamic brush...

Electromagnetic gap sub assembly

HARSH ENVIRONMENT ROTATABLE CONNECTOR

Multi-conductor plug and socket apparatus

Apparatus for receiving downhole acoustic signals