Gilles Pelfrene

Title: Innovations by Gilles Pelfrene

Introduction

Gilles Pelfrene is a notable inventor based in Fontainebleau, France. He has made significant contributions to the field of drilling technology, holding two patents that showcase his innovative approach to improving drilling efficiency and effectiveness.

Latest Patents

One of his latest patents is titled "Drill bit having a weight on bit reducing effect." This invention features a drill bit designed for wellbore drilling, which includes a body and a cutting face. The cutting face is divided into an inner section and an outer section, with multiple blades protruding from the body. Each blade is equipped with superhard cutters, where the inner section's cutters have a negative profile angle, while the outer section's cutters have a positive profile angle. This design allows for a weight on bit (WOB) reducing effect, enhancing drilling performance.

Another significant patent is the "Passively induced forced vibration rock drilling system." This invention comprises a bottomhole assembly that includes a drill bit capable of vibrating when engaged with a formation. The assembly features a suspension sub that connects the drill bit to a pipe string, allowing for movement and vibration tuning. This system is designed to dampen or resonate the drill bit's vibrations based on the angular velocity of the bottomhole assembly, thereby imparting percussive energy to the drill bit.

Career Highlights

Gilles Pelfrene has worked with Varel Europe S.a.s. and Varel Europe, where he has applied his expertise in drilling technology. His work has contributed to advancements in the efficiency and effectiveness of drilling operations.

Collaborations

Throughout his career, Gilles has collaborated with professionals such as Alfazazi Dourfaye and Olivier Ther. These collaborations have likely enriched his work and contributed to the development of his innovative patents.

Conclusion

Gilles Pelfrene's contributions to drilling technology through his patents demonstrate his commitment to innovation in the field. His work continues to influence the industry, showcasing the importance of inventive solutions in enhancing drilling efficiency.