Company Filing History:
6 out of 10 
1 out of 1 
1 out of 1 Years Active: 2007-2017
Title: Borre Fossli: Innovator in Subsea Drilling Technologies
Introduction
Borre Fossli is a prominent inventor based in Oslo, Norway. He has made significant contributions to the field of subsea drilling, holding a total of 10 patents. His innovative approaches have advanced the methods and systems used in this critical area of the oil and gas industry.
Latest Patents
One of Borre Fossli's latest patents focuses on systems and methods for subsea drilling. This invention controls drilling fluid pressure in the borehole of a subsea well and effectively separates gas from the drilling fluid. The method involves pumping drilling fluid into the borehole through a drill string and returning it through an annulus between the drill string and the well bore, as well as between the drill string and a riser. The pressure of the drilling fluid is managed by draining fluid out of the riser or a blowout preventer (BOP) at a level between the seabed and the surface. This adjustment helps control the hydrostatic head of the drilling fluid in the riser. The separated gas is vented to the surface through a vent line, while the fluid is pumped to the surface via a subsea pump. Additionally, a closing device, choke line, and valve can release pressure after a gas kick occurs in the well.
Career Highlights
Borre Fossli has worked with notable companies in the industry, including Ocean Riser Systems AS and Ocean Rider Systems AS. His experience in these organizations has allowed him to refine his expertise in subsea drilling technologies and contribute to various innovative projects.
Collaborations
Throughout his career, Borre Fossli has collaborated with esteemed colleagues such as Sigbjorn Sangesland and Drummond Lawson. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies in subsea drilling.
Conclusion
Borre Fossli's contributions to subsea drilling through his patents and collaborations highlight his role as a key innovator in the field. His work continues to influence the industry and pave the way for future advancements in drilling technologies.