David L Freeman

Title: David L. Freeman: Innovator in Core Sample Analysis and Permeability Testing

Introduction

David L. Freeman is a notable inventor based in Garland, Texas, who has contributed to the field of oil and gas exploration through his innovations. With a total of two patents to his name, Freeman has developed methods that significantly enhance the analysis of core samples and the testing of fluid permeability.

Latest Patents

Freeman's latest innovations include:

1. **Method for Quantitative Analysis of Core Samples** - This patent describes a method for the quantitative mineral analysis of core samples obtained from oil and gas wells. The process involves grinding the sample into a very fine particle size and combining it with a carrier material such as potassium bromide (KBr) to form a pellet. This pellet is then examined using a Fourier transform infrared spectrometer, and the resulting spectra are compared with known standards in a digital computer to produce an accurate quantitative analysis of the material.

2. **Method and Apparatus for Nonsteady State Testing of Permeability** - This invention addresses the measurement of a core sample's permeability during nonsteady state flow of fluid. The core sample is placed in a fixed, closed volume and subjected to a predetermined test pressure at the upstream end while also experiencing a constant confining pressure. By measuring the change in pressure across the core over time, the permeability of the sample can be determined based on the time-related pressure changes.

Career Highlights

Freeman has had a distinguished career, working with prominent companies in the oil and gas industry. He has been associated with **Core Laboratories, Inc.** and **Western Atlas International, Inc.**, where he utilized his expertise to contribute to research and development efforts. His work has helped advance the methodologies used in the analysis and testing of core samples, which are crucial in resource extraction.

Collaborations

Throughout his career, Freeman has collaborated with talented professionals, including Darrell C. Bush and Mark G. Rockley. These collaborations have fostered innovation and have contributed to the successful development of his patented methods.

Conclusion

David L. Freeman's inventions reflect a significant contribution to the fields of core sample analysis and permeability testing in the oil and gas industry. His innovative approaches enhance the understanding and efficiency of resource extraction processes, establishing him as a key figure in the advancement of technologies in this area.