Presentation Profile
Thermal Stability and Performance Analysis of Environmentally Acceptable Lubricants (EALs) in HPHT Downhole Operations
Currently Scheduled: 10/14/2026 - 1:00 PM - 2:00 PM
Room: Exhibit Hall Entrance
Main Author
Raj Shah - Koehler Instrument Company, Inc.
- Rohan Borahalli - Koehler Instrument Company, Inc.
- Gavin Cunningham - Koehler Instrument Company, Inc.
Abstract:
Environmentally Acceptable Lubricants (EALs), a category of green tribology, are environmentally friendly alternatives to the synthetic lubricants normally used for lubricating drill bits in downhole operations. The current regulations set by the US Environmental Protection Agency (EPA), such as the Limitations Guidelines and Standards for Synthetic-Based Drilling Fluids, have recently placed greater pressure on current operators to cease use of the current synthetic lubricants and to use biodegradable alternatives in downhole operations. However, the critical question lies in whether the EALs offer tribology-based performance that is equivalent to or better than that of the synthetic lubricants. As environmental regulations continue to become more restrictive, an in-depth understanding of the various EALs and their performance under High Pressure, High Temperature (HPHT) downhole environments is required.
Most EALs cannot withstand high temperatures and most wells reach above 400°F. Many EALs lose their lubricating capacities, viscosity, and are unable to reduce friction at the drill bit as temperature reaches levels of around 200°F. A comparison-based model was developed based on a collection of all available technical data sheets and tribological performance data of EALs from major companies. The data is then compared and presented in terms of thermal degradation, viscosity indexes and friction-reducing performance. The mechanical limits of these “green” tribological solutions will be useful in controlling the usage of these biodegradable lubricants in frequent downhole applications without compromising the drill string in environmental regulations. The poster will discuss the thermal capacities of EALs and provide a data-driven standing for selection of the best environmentally acceptable lubricants for certain downhole operations that meet the EPA’s drive on a parallel note.
