Djurre Hans Zijsling

This inventor holds 51 USPTO granted patents and 7 published patent applications, plus 7 CIPO patents and 8 EPO patents, primarily in Expandable Tubular Technology (CPC class E21B). Top assignees: Shell Oil Comapny, Enventure Global Technology Inc., Shell Internationale Research Maatschappij B.v. the Netherlands. Active years: 1986-2020.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Djurre Hans Zijsling. Retrieved from https://idiyas.com/inventor/djurre-hans-zijsling

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 51 (Patent Applications = 7)

% Patents Active = 72.5

CIPO Patents = 7

EPO Patents = 8 (Patent Applications = 13)

Average Co-Inventor Count = 1.9

ph-index = 13

Forward Citations = 493(Granted Patents)

Forward Citations (Not Self Cited) = 480(Dec 10, 2025)

Inventors with similar research interests:

Location History:

AB Rijswijk, NL (1989)
Assen, NL (1989 - 1993)
Gd Rijswijk, NL (1986 - 2006)
Kesslerpark, NL (2013)
Rijswijk, NL (1986 - 2020)
Rijwsijk, NL (2020)

Company Filing History:

Enventure Global Technology Inc.

patents

1 out of 1

Shell Internationale Research Maatschappij B.v. the Netherlands

patent

4. 1 out of 2

Tubefuse Applications B.v.

patents

Years Active: 1986-2020

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Areas of Expertise:

Wellbore Sealing

Tubular Expansion

Anchoring Solutions

Expandable Tubulars

Drilling Systems

Forge Welding

Pipe Connectors

Drill Bits

Hybrid Methods

Safety Joints

Fluid Injection

Incremental Expansion

51 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10858915 - Reducing swab pressure generated behind a well liner expansion cone (2020-12-08),

2. 10801285 - Retrievable self-energizing top anchor tool (2020-10-13),

3. 10655425 - Method and system for sealing an annulur space around an expanded well tubular (2020-05-19),

4. 10648298 - Method of expanding a tubular and expandable tubular (2020-05-12),

5. 10597961 - Method and system for locking an upper end of an expanded tubular within a host casing (2020-03-24),

6. 10577900 - Expansion assembly, top anchor and method for expanding a tubular in a wellbore (2020-03-03),

7. 10570710 - Method and system for sealing a segmented expandable cone (2020-02-25),

8. 10450846 - Hybrid push and pull method and system for expanding well tubulars (2019-10-22),

9. 10287827 - Low break out safety joint and method for releasably connecting a tubing expansion assembly to a drill string (2019-05-14),

10. 10036235 - Assembly and method for expanding a tubular element (2018-07-31),

11. 10000990 - System and method for creating a sealing tubular connection in a wellbore (2018-06-19),

12. 9951588 - Expansion assembly, top anchor and method for expanding a tubular in a wellbore (2018-04-24),

13. 9822614 - Combined casing system and method (2017-11-21),

14. 9677179 - Pipe connector and method (2017-06-13),

15. 9617800 - Connector assembly (2017-04-11),

Title: Djurre Hans Zijsling: Innovator in Well Technology

Introduction: Djurre Hans Zijsling is a prominent inventor based in Rijswijk, Netherlands, known for his significant contributions to the field of well technology. With an impressive portfolio of 51 patents, Zijsling has been involved in the development of advanced tools and systems that enhance the efficiency and effectiveness of well operations.

Latest Patents: Zijsling's recent innovations include two notable patents. The first is titled "Reducing Swab Pressure Generated Behind a Well Liner Expansion Cone", which describes a tubular pull string assembly designed to facilitate the pulling of an expansion mandrel through the overlapping area of well liners. This invention incorporates at least one flow port to enable fluid flow from the exterior to the interior during the pop-out of the expansion mandrel. Moreover, the expansion mandrel features a streamlined tail section with an inwardly tapered outer surface that meets the mandrel's longitudinal axis at a sharp angle, essential for minimizing swab pressure.

The second patent, "Retrievable Self-Energizing Top Anchor Tool," outlines a tool with a central energizing mandrel and a series of anchor segments designed to engage inclined surfaces for optimal anchoring. Its design includes a release mechanism with pre-loaded springs that allow for efficient anchoring and release, making it an innovative solution in well technology.

Career Highlights: Djurre Hans Zijsling has had a successful career with notable companies in the industry, including Shell Oil Company and Enventure Global Technology Inc. His work has focused on developing technologies that address common challenges faced in well operations, earning him recognition as a leader in the field.

Collaborations: Throughout his career, Zijsling has collaborated with several talented individuals, including Antonius Leonardus Maria Wubben and Daniele Di Crescenzo. These collaborations have contributed to the refinement and advancement of his inventions, showcasing the power of teamwork in driving innovation.

Conclusion: Djurre Hans Zijsling's impressive body of work and extensive patent portfolio underscore his influence in well technology. His latest innovations reflect a commitment to improving efficiency and functionality in well operations. As an inventor, Zijsling continues to contribute valuable advancements that will shape the future of the industry.

Profile summary based on public USPTO records.