Roger L Smith

Title: Roger L. Smith: Inventor in Petroleum Reservoir Logging

Introduction

Roger L. Smith is an inventor associated with Tulsa, Oklahoma, whose patent work addresses methods for evaluating underground formations and petroleum reservoirs. His inventions use radioactive tracers and pulsed neutron logging to help assess fluid movement and reservoir characteristics. Smith holds 2 patents.

Latest Patents

Smith’s listed patents focus on techniques for gathering and interpreting information from underground formations.

“Multi-tracer logging technique” describes introducing two gamma-ray-emitting radioactive tracers with different energy levels into underground formations. Logs track the tracers as fluids move through the formations, and analysis of those logs can reveal changes in effective permeability and fluid sweep.

“Determination of movable oil saturations” presents a log-inject-log method for estimating movable oil saturation in a reservoir. The process prepares the rock near a wellbore to represent interwell conditions, then uses a sequence of pulsed neutron logs and fluid injections—including crude oil, chlorinated crude oil, salt water, and fresh water—to determine reservoir characteristics.

Career Highlights

Smith’s work reflects the use of logging and fluid-tracing methods to investigate subsurface formations. The supplied career information associates him with The Standard Oil Company and Standard Oil Company (Indiana).

Collaborations

Smith’s listed coworkers include Robert P. Murphy and Dwight L. Dauben. Their names provide context for the professional relationships associated with his work.

Conclusion

Roger L. Smith’s two patents describe practical approaches to measuring fluid movement and movable oil saturation in underground reservoirs, contributing methods for analyzing petroleum formations.