This inventor holds 7 USPTO granted patents, plus 1 CIPO patent and 1 EPO patent. Top assignees: Halliburton Energy Services, Inc., Weatherford Technology Holdings, LLC, Weatherford/lamb, Inc.. Active years: 2002-2020.
Location History:
- Houston, TX (US) (2014 - 2017)
- Kingwood, TX (US) (2002 - 2020)
Company Filing History:


Years Active: 2002-2020
Title: Innovations of Patrick M Ljungdahl
Introduction
Patrick M Ljungdahl is a notable inventor based in Kingwood, TX (US). He has made significant contributions to the field of oilfield equipment and tubulars, holding a total of 7 patents. His work focuses on improving planning and inventory operations through innovative methods and apparatus.
Latest Patents
One of his latest patents is titled "Serialization and database methods for tubulars and oilfield equipment." This invention identifies downhole equipment and correlates input data with the equipment to enhance planning and inventory operations. The methods involve oilfield equipment or tubular goods, such as drill pipes, which include a shaped recess along the outer circumference for receiving a tag cartridge by shrink fitting. Once tagged, detector system configurations at pipe yards facilitate logging the presence and location of each drill pipe. This correlation allows for the tracking of specific data, such as inspection data, for each drill pipe. Furthermore, the database populated by this correlation aids in various business functions, including forecasting the number of additional drill pipes needed for purchase, invoicing customers based on actual tracked wear and use of the drill pipes being returned, and providing well or job-specific drill string populations using known history of pipe joints.
Career Highlights
Throughout his career, Patrick has worked with prominent companies in the industry, including Halliburton Energy Services, Inc. and Weatherford/Lamb, Inc. His experience in these organizations has contributed to his expertise in the field of oilfield technology.
Collaborations
Patrick has collaborated with notable professionals such as Paul Steven Griggs and Stephen Sarradet. These collaborations have further enriched his work and innovations in the industry.
Conclusion
Patrick M Ljungdahl's contributions to the field of oilfield equipment and tubulars demonstrate his innovative spirit and commitment to improving industry practices. His patents and career achievements reflect his significant impact on the sector.