Brian J O'Donnell

Title: Brian J O'Donnell: Innovator in Drillstring Design

Introduction

Brian J O'Donnell is a notable inventor based in Houston, TX, who has made significant contributions to the field of drilling technology. He is recognized for his innovative approach to designing drillstrings, particularly for use in challenging wellbore conditions.

Latest Patents

Brian J O'Donnell holds a patent for designing a drillstring that is specifically tailored for use in deviated or horizontal wellbores. This invention is particularly relevant for extended reach wellbores. The patented method involves determining the downhole weight-on-bit transmitted by a drillstring by establishing a baseline tension profile and baseline torque profile while the drillstring is rotating off-bottom. By utilizing these profiles alongside a selected surface weight-on-bit slack-off value, he calculates a drillstring tension profile and rotating torque profile when the bit is on bottom and weight is applied. The method also incorporates buckling limit checks and rig operational limit checks to ensure that sufficient torque and downhole weight-on-bit can be transmitted through the drillstring, while also confirming the operability of the drillstring even if certain sections may be in a buckled condition.

Career Highlights

Brian J O'Donnell is currently employed at ExxonMobil Upstream Research Company, where he continues to advance drilling technologies. His work has been instrumental in enhancing the efficiency and safety of drilling operations.

Collaborations

Throughout his career, Brian has collaborated with esteemed colleagues such as Kaustubh S Kulkarni and Lei Wang, contributing to various projects that aim to improve drilling methodologies.

Conclusion

Brian J O'Donnell's innovative work in drillstring design exemplifies the importance of advancements in drilling technology. His contributions not only enhance operational efficiency but also ensure the safety and reliability of drilling processes.