David A. Hejl

Person

Houston, TX, US

People

Patents Grantslast 30 patents

Information Patent Grant
Extendable downhole tool and related systems, apparatus, and methods
- Patent number 11,629,592
- Issue date Apr 18, 2023
- Baker Hughes Oilfield Operations LLC
- Shiva Paramhans
- E21 - EARTH DRILLING MINING
Information Patent Grant
Extendable probe and formation testing tool and method
- Patent number 10,316,657
- Issue date Jun 11, 2019
- Baker Hughes, a GE company, LLC
- Shiva Paramhans
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for obtaining formation fluid samples
- Patent number 9,790,789
- Issue date Oct 17, 2017
- Baker Hughes Incorporated
- David A. Hejl
- E21 - EARTH DRILLING MINING
Information Patent Grant
Bi-directional fluid loss device and method
- Patent number 7,252,153
- Issue date Aug 7, 2007
- Halliburton Energy Services, Inc.
- David A. Hejl
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for treating an interval of a wellbore
- Patent number 7,243,724
- Issue date Jul 17, 2007
- Halliburton Energy Services, Inc.
- Ronald W. McGregor
- E21 - EARTH DRILLING MINING
Information Patent Grant
Gravel packing apparatus having an integrated joint connection and...
- Patent number 6,814,139
- Issue date Nov 9, 2004
- Halliburton Energy Services, Inc.
- David A. Hejl
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for gravel packing an interval of a wellbore
- Patent number 6,789,624
- Issue date Sep 14, 2004
- Halliburton Energy Services, Inc.
- Ronald W. McGregor
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for gravel packing an interval of a wellbore
- Patent number 6,516,882
- Issue date Feb 11, 2003
- Halliburton Energy Services, Inc.
- Ronald W. McGregor
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
EXTENDABLE DOWNHOLE TOOL AND RELATED SYSTEMS, APPARATUS, AND METHODS
- Publication number 20230110594
- Publication date Apr 13, 2023
- Baker Hughes Oilfield Operations LLC
- Shiva Paramhans
- E21 - EARTH DRILLING MINING
Information Patent Application
EXTENDABLE PROBE AND FORMATION TESTING TOOL AND METHOD
- Publication number 20160237817
- Publication date Aug 18, 2016
- BAKER HUGHES INCORPORATED
- Shiva Paramhans
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHOD FOR OBTAINING FORMATION FLUID SAMPLES
- Publication number 20140174169
- Publication date Jun 26, 2014
- BAKER HUGHES INCORPORATED
- David A. Hejl
- E21 - EARTH DRILLING MINING
Information Patent Application
Bi-directional fluid loss device
- Publication number 20060169465
- Publication date Aug 3, 2006
- Halliburton Energy Services, Inc.
- David A. Hejl
- E21 - EARTH DRILLING MINING
Information Patent Application
Apparatus and method for treating an interval of a wellbore
- Publication number 20050103494
- Publication date May 19, 2005
- Ronald W. McGregor
- E21 - EARTH DRILLING MINING
Information Patent Application
Gravel packing apparatus having an integrated joint connection and...
- Publication number 20040074641
- Publication date Apr 22, 2004
- David A. Hejl
- E21 - EARTH DRILLING MINING
Information Patent Application
Apparatus and method for gravel packing an interval of a wellbore
- Publication number 20030221828
- Publication date Dec 4, 2003
- Ronald W. McGregor
- E21 - EARTH DRILLING MINING
Information Patent Application
Transition member for maintaining fluid slurry velocity therethroug...
- Publication number 20030183386
- Publication date Oct 2, 2003
- Ronald W. McGregor
- E21 - EARTH DRILLING MINING

David A. Hejl

Person

Patents Grantslast 30 patents

Extendable downhole tool and related systems, apparatus, and methods

Extendable probe and formation testing tool and method

Apparatus and method for obtaining formation fluid samples

Bi-directional fluid loss device and method

Apparatus and method for treating an interval of a wellbore

Gravel packing apparatus having an integrated joint connection and...

Apparatus and method for gravel packing an interval of a wellbore

Apparatus and method for gravel packing an interval of a wellbore

Patents Applicationslast 30 patents

EXTENDABLE DOWNHOLE TOOL AND RELATED SYSTEMS, APPARATUS, AND METHODS

EXTENDABLE PROBE AND FORMATION TESTING TOOL AND METHOD

APPARATUS AND METHOD FOR OBTAINING FORMATION FLUID SAMPLES

Bi-directional fluid loss device

Apparatus and method for treating an interval of a wellbore

Gravel packing apparatus having an integrated joint connection and...

Apparatus and method for gravel packing an interval of a wellbore

Transition member for maintaining fluid slurry velocity therethroug...