Session: 11-01-03 Well Drilling Technology

Submission Number: 157114

Impact of Fluid Flow on Hook Load and Torque: Advancing Predictive Models for Drilling Operations 

The effects of fluid flow on hook load and torque measurements are pivotal in optimizing drilling operations and ensuring wellbore stability. This study investigates the direct relationship between fluid circulation and surface measurements, focusing on the dynamic forces induced by hydraulic interactions. Drilling fluid, as a critical component, influences torque and axial load through mechanisms such as buoyancy, friction, and hydraulic lift. While traditional Archimedes-based models offer simplified estimations, this work integrates advanced formulations that account for fluid circulation effects, improving the prediction accuracy for hook load and torque under various operational scenarios.

Using both analytical and computational approaches, the study evaluates hydraulic forces, incorporating parameters such as fluid density, velocity, and pressure gradients. Simulation results are validated against field data, highlighting the impact of fluid flow rates on torque and drag. Observations indicate that higher flow rates decrease the hook load, altering the effective weight on bit (WOB) and consequently affecting penetration rates. This finding aligns with experimental data, reinforcing the importance of real-time adjustments in fluid parameters to mitigate risks such as pipe sticking and excessive wear.

Furthermore, this research underscores the importance of incorporating real-time data acquisition systems to monitor and adapt to the changing dynamics of fluid flow and mechanical interactions. By integrating transient hydraulic effects into dynamic torque and drag models, this study bridges gaps in conventional methodologies and enhances predictive capabilities for surface measurement variations.

The findings provide a robust framework for understanding and addressing the challenges posed by fluid dynamics in drilling operations. This approach not only enhances operational efficiency but also contributes to the development of safer and more reliable drilling practices.

Presenting Author: Evren Ozbayoglu Tulsa University

Presenting Author Biography: Evren M. Ozbayoglu holds the "Jonathan Detwiler Chair" as a full Professor in the Petroleum Engineering Department at the University of Tulsa (TU). Additionally, he serves as the Director of The University of Tulsa, Drilling Research Projects (TUDRP). With a BSc and MSc from METU in 1996 and 1998 respectively, he obtained his PhD from TU in 2002. Dr. Ozbayoglu began his career as a full-time faculty member at METU and continued until August 2009, after which he joined TU. His extensive publications include over 200 peer-reviewed journal papers, conference papers, and contributions to SPE Textbook Series. Engaged in industrial projects, his research spans drilling and well completion topics including non-Newtonian fluid flow, underbalanced & managed pressure drilling, tubular mechanics, data analytics, and more. He has been an active member of SPE since 1994 and ASME since 2015.