For the Inventor, By the Inventor

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Aberdeen, United Kingdom

Deep Casing Tools, Ltd.

USPTO Granted Patents = 11

EPO Patents = 4

Trademarks = 2

Forward Citations = 86

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10 inventors (with patents filed for the assignee):

David John Stephenson (5 out of 5 patents)

Edward Docherty Scott (5 out of 11 patents)

Tomasz Jozef Walerianczyk (4 out of 4 patents)

4. Lance S Davis (4 out of 4 patents)

5. Wojciech Buczak (1 out of 2 patents)

6. Neil Andrew Abercrombie Simpson (1 out of 63 patents)

7. Mark W Presslie (1 out of 2 patents)

8. Tomasz J Walerianczyk (1 out of 1 patent)

9. Derek Frederick Herrera (1 out of 2 patents)

10. Rafael Villa De Santana (1 out of 1 patent)

11. Mark Wilson Presslie (0 patent)

12. Lance Stephen Davis (0 patent)

13. Derek Herrera (0 patent)

11 patents: Sort by Forward Citations

1. 12392200 - Fluid operated motor for running casing with bypass for pumping lost circulation material (2025-08-19),

2. 12173574 - Method and apparatus for well tubular flotation (2024-12-24),

3. 11828119 - Method and apparatus for well tubular flotation (2023-11-28),

4. 10934796 - Method for removing casing from a wellbore (2021-03-02),

5. 10907439 - Apparatus and method for well tubular flotation (2021-02-02),

6. 9574406 - Wellbore completion system with reaming tool (2017-02-21),

7. 9080384 - Pressure balanced fluid operated reaming tool for use in placing wellbore tubulars (2015-07-14),

8. 8807245 - Reaming tool (2014-08-19),

9. 8622126 - Reaming tool (2014-01-07),

10. 8074742 - Apparatus and method for cutting a wellbore (2011-12-13),

11. 7849927 - Running bore-lining tubulars (2010-12-14),

Deep Casing Tools, Ltd., based in Aberdeen, specializes in innovative solutions for the oil and gas industry, focusing on advanced casing technology. The company develops tools designed to enhance drilling efficiency and safety, particularly in challenging environments. Their expertise encompasses various aspects of well construction and integrity, aiming to optimize operations and reduce costs for clients globally. With a commitment to research and development, Deep Casing Tools is at the forefront of technological advancements in the sector.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Deep Casing Tools, Ltd.

11 Patents

#20 in Aberdeen

#1,598 in United Kingdom

#51,714 in the World

Aberdeen, United Kingdom

Deep Casing Tools, Ltd.

Forward Citations = 86

10 inventors:

David John Stephenson (5 out of 5 patents)

Edward Docherty Scott (5 out of 11 patents)

Tomasz Jozef Walerianczyk (4 out of 4 patents)

4. Lance S Davis (4 out of 4 patents)

5. Wojciech Buczak (1 out of 2 patents)

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