David Stephenson

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Aberdeen, GB

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for well tubular flotation
- Patent number 11,828,119
- Issue date Nov 28, 2023
- Deep Casing Tools, Ltd.
- David John Stephenson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for removing casing from a wellbore
- Patent number 10,934,796
- Issue date Mar 2, 2021
- Deep Casing Tools, Ltd.
- David John Stephenson
- E21 - EARTH DRILLING MINING
Information Patent Grant
Apparatus and method for well tubular flotation
- Patent number 10,907,439
- Issue date Feb 2, 2021
- Deep Casing Tools, Ltd.
- David Stephenson
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
FLUID OPERATED MOTOR FOR RUNNING CASING WITH BYPASS FOR PUMPING LOS...
- Publication number 20240328260
- Publication date Oct 3, 2024
- Deep Casing Tools Limited
- Rafael Villa de Santana
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR WELL TUBULAR FLOTATION
- Publication number 20240068311
- Publication date Feb 29, 2024
- Deep Casing Tools, Ltd.
- David John Stephenson
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD AND APPARATUS FOR WELL TUBULAR FLOTATION
- Publication number 20210363843
- Publication date Nov 25, 2021
- Deep Casing Tools, Ltd.
- David John Stephenson
- E21 - EARTH DRILLING MINING
Information Patent Application
METHOD FOR REMOVING CASING FROM A WELLBORE
- Publication number 20190345787
- Publication date Nov 14, 2019
- Deep Casing Tools, Ltd.
- David John Stephenson
- E21 - EARTH DRILLING MINING
Information Patent Application
APPARATUS AND METHOD FOR WELL TUBULAR FLOTATION
- Publication number 20190309600
- Publication date Oct 10, 2019
- Deep Casing Tools, Ltd.
- David Stephenson
- E21 - EARTH DRILLING MINING