David Welshans

Person

Damon, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Systems and methods of a sample bottle assembly
- Patent number 9,598,956
- Issue date Mar 21, 2017
- Halliburton Energy Services, Inc.
- Kristopher V. Sherrill
- E21 - EARTH DRILLING MINING
Information Patent Grant
Systems and methods of a sample bottle assembly
- Patent number 9,068,405
- Issue date Jun 30, 2015
- Halliburton Energy Services, Inc.
- Kristopher V. Sherrill
- G01 - MEASURING TESTING
Information Patent Grant
Methods and apparatus for measuring formation properties
- Patent number 7,966,875
- Issue date Jun 28, 2011
- Halliburton Energy Services, Inc.
- Mark A. Proett
- E21 - EARTH DRILLING MINING
Information Patent Grant
Measurement while drilling tool with interconnect assembly
- Patent number 7,938,199
- Issue date May 10, 2011
- Halliburton Energy Services, Inc.
- David Welshans
- E21 - EARTH DRILLING MINING
Information Patent Grant
MWD formation tester
- Patent number 7,395,879
- Issue date Jul 8, 2008
- Halliburton Energy Services, Inc.
- Pedro Segura
- E21 - EARTH DRILLING MINING
Information Patent Grant
Methods for measuring a formation supercharge pressure
- Patent number 7,243,537
- Issue date Jul 17, 2007
- Halliburton Energy Services, Inc.
- Mark A. Proett
- E21 - EARTH DRILLING MINING
Information Patent Grant
Methods for using a formation tester
- Patent number 7,216,533
- Issue date May 15, 2007
- Halliburton Energy Services, Inc.
- Malcolm D. McGregor
- E21 - EARTH DRILLING MINING
Information Patent Grant
MWD formation tester
- Patent number 7,204,309
- Issue date Apr 17, 2007
- Halliburton Energy Services, Inc.
- Pedro R. Segura
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
SYSTEMS AND METHODS OF A SAMPLE BOTTLE ASSEMBLY
- Publication number 20150275662
- Publication date Oct 1, 2015
- Halliburton Energy Services, Inc.
- Kristopher V. Sherrill
- E21 - EARTH DRILLING MINING
Information Patent Application
SYSTEMS AND METHODS OF A SAMPLE BOTTLE ASSEMBLY
- Publication number 20130014994
- Publication date Jan 17, 2013
- Halliburton Energy Services, Inc.
- Kristopher V. Sherrill
- G01 - MEASURING TESTING
Information Patent Application
MEASUREMENT WHILE DRILLING TOOL WITH INTERCONNECT ASSEMBLY
- Publication number 20090195250
- Publication date Aug 6, 2009
- Halliburton Energy Services, Inc.
- David Welshans
- E21 - EARTH DRILLING MINING
Information Patent Application
METHODS AND APPARATUS FOR MEASURING FORMATION PROPERTIES
- Publication number 20080314137
- Publication date Dec 25, 2008
- Halliburton Energy Services, Inc.
- Mark A. Proett
- E21 - EARTH DRILLING MINING
Information Patent Application
MWD FORMATION TESTER
- Publication number 20070181341
- Publication date Aug 9, 2007
- Halliburton Energy Services, Inc.
- Pedro Segura
- E21 - EARTH DRILLING MINING
Information Patent Application
Methods for using a formation tester
- Publication number 20050268709
- Publication date Dec 8, 2005
- Halliburton Energy Services, Inc.
- Malcolm D. McGregor
- E21 - EARTH DRILLING MINING
Information Patent Application
Methods and apparatus for measuring formation properties
- Publication number 20050257611
- Publication date Nov 24, 2005
- Halliburton Energy Services, Inc.
- James M. Fogal
- E21 - EARTH DRILLING MINING
Information Patent Application
Methods for measuring a formation supercharge pressure
- Publication number 20050235745
- Publication date Oct 27, 2005
- Halliburton Energy Services, Inc.
- Mark A. Proett
- E21 - EARTH DRILLING MINING
Information Patent Application
MWD formation tester
- Publication number 20050072565
- Publication date Apr 7, 2005
- Halliburton Energy Services, Inc.
- Pedro R. Segura
- E21 - EARTH DRILLING MINING

David Welshans

Person

Patents Grantslast 30 patents

Systems and methods of a sample bottle assembly

Systems and methods of a sample bottle assembly

Methods and apparatus for measuring formation properties

Measurement while drilling tool with interconnect assembly

MWD formation tester

Methods for measuring a formation supercharge pressure

Methods for using a formation tester

MWD formation tester

Patents Applicationslast 30 patents

SYSTEMS AND METHODS OF A SAMPLE BOTTLE ASSEMBLY

SYSTEMS AND METHODS OF A SAMPLE BOTTLE ASSEMBLY

MEASUREMENT WHILE DRILLING TOOL WITH INTERCONNECT ASSEMBLY

METHODS AND APPARATUS FOR MEASURING FORMATION PROPERTIES

MWD FORMATION TESTER

Methods for using a formation tester

Methods and apparatus for measuring formation properties

Methods for measuring a formation supercharge pressure

MWD formation tester