Jan Edgar Marshall

Title: Jan Edgar Marshall: Innovator in Drilling Technology

Introduction

Jan Edgar Marshall is a notable inventor based in Conroe, TX (US). He has made significant contributions to the field of drilling technology, holding a total of 2 patents. His work focuses on enhancing the efficiency and effectiveness of drilling operations.

Latest Patents

Marshall's latest patents include innovative designs for fixed cutter drill bits and methods for manufacturing them. The first patent describes a fixed cutter drill bit designed for drilling boreholes in earthen formations. This drill bit features a blank assembly and a matrix crown that is securely mounted to the blank assembly. The blank assembly consists of an annular mandrel and several elongate studs that are fixedly coupled to the mandrel. The mandrel has a first end that is distal to the crown and a second end that engages the crown. Additionally, the mandrel includes multiple bores that extend axially from the second end. Each elongate stud is positioned within one of the bores, with its second end located in the crown, distal to the mandrel.

The second patent focuses on reinforced stators and fabrication methods. This invention pertains to a stator for a progressive cavity pump or motor, which comprises a tubular housing with a central axis. The stator includes a stator insert that is coaxially disposed within the housing. The insert has a radially outer surface that engages the housing and a radially inner surface that defines a helical-shaped through bore extending axially through the insert. The insert consists of an insert body and an insert liner, with the insert body positioned between the housing and the insert liner. The insert body features a reinforcement structure and a series of voids dispersed within it.

Career Highlights

Throughout his career, Jan Edgar Marshall has worked with prominent companies in the oil and gas industry, including National Oilwell Varco, L.P. and National Oilwell DHT, L.P. His experience in these organizations has contributed to his expertise in drilling technologies and innovations.

Collaborations

Marshall has collaborated with several professionals in his field, including Harold Sreshta and Jiinjen Albert Sue. These collaborations have likely enriched his work and led to further advancements in drilling technology.

Conclusion

Jan Edgar Marshall is a distinguished inventor whose contributions to drilling technology have made a significant impact in the industry. His innovative