Edward M. Tollefsen

Person

Katy, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Downhole electromagnetic sensing techniques
- Patent number 10,598,809
- Issue date Mar 24, 2020
- Schlumberger Technology Corporation
- Jung Kee Chung
- G01 - MEASURING TESTING
Information Patent Grant
Methods for evaluating cuttings density while drilling
- Patent number 9,228,430
- Issue date Jan 5, 2016
- Schlumberger Technology Corporation
- John Rasmus
- E21 - EARTH DRILLING MINING
Information Patent Grant
System and method for managing temperature in a wellbore
- Patent number 8,727,035
- Issue date May 20, 2014
- Schlumberger Technology Corporation
- Edward M. Tollefsen
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method and system for logging a well while fishing for the logging...
- Patent number 5,477,921
- Issue date Dec 26, 1995
- Schlumberger Technology Corporation
- Edward M. Tollefsen
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES
- Publication number 20210199836
- Publication date Jul 1, 2021
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Jung Kee Chung
- G01 - MEASURING TESTING
Information Patent Application
DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES
- Publication number 20200200939
- Publication date Jun 25, 2020
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Jung Kee Chung
- G01 - MEASURING TESTING
Information Patent Application
SEISMIC INVESTIGATIONS USING SEISMIC SENSOR
- Publication number 20180045559
- Publication date Feb 15, 2018
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Andrew Hawthorn
- G01 - MEASURING TESTING
Information Patent Application
DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES
- Publication number 20180003849
- Publication date Jan 4, 2018
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Jung Kee Chung
- G01 - MEASURING TESTING
Information Patent Application
WELLBORE INTERVAL DENSITIES
- Publication number 20130048380
- Publication date Feb 28, 2013
- John Rasmus
- E21 - EARTH DRILLING MINING
Information Patent Application
METHODS FOR EVALUATING CUTTINGS DENSITY WHILE DRILLING
- Publication number 20130054146
- Publication date Feb 28, 2013
- John Rasmus
- E21 - EARTH DRILLING MINING
Information Patent Application
System and Method for Managing Temperature in a Wellbore
- Publication number 20120055672
- Publication date Mar 8, 2012
- SCHLUMBERGER TECHNOLOGY CORPORATION
- Edward M. Tollefsen
- E21 - EARTH DRILLING MINING

Edward M. Tollefsen

Person

Patents Grantslast 30 patents

Downhole electromagnetic sensing techniques

Methods for evaluating cuttings density while drilling

System and method for managing temperature in a wellbore

Method and system for logging a well while fishing for the logging...

Patents Applicationslast 30 patents

DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES

DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES

SEISMIC INVESTIGATIONS USING SEISMIC SENSOR

DOWNHOLE ELECTROMAGNETIC SENSING TECHNIQUES

WELLBORE INTERVAL DENSITIES

METHODS FOR EVALUATING CUTTINGS DENSITY WHILE DRILLING

System and Method for Managing Temperature in a Wellbore