Harold L Petrie

Title: **Harold L. Petrie - An Innovator in Petroleum Engineering**

Introduction

Harold L. Petrie, a dedicated innovator based in Sierra Madre, California, has made significant contributions to the field of petroleum engineering through his remarkable inventions. With a total of seven patents to his name, Petrie's work focuses on enhancing efficiency and functionality in oil production equipment.

Latest Patents

Among his notable inventions, two stand out for their innovative approaches and practical applications. The first is an **Oil Well Standing Valve**, designed to be retrievably mounted in a well production tubing. This valve allows for maximum fluid flow while providing easy drainage and retrieval through the tubing. Its seal is strategically located at or below the seat level, ensuring optimal performance in drainage from the valve to the well.

The second patent is the **Sealing Structure for Reciprocating Pistons Exposed to High Pressure**. This invention significantly reduces leakage along a piston that operates within a cylinder under high fluid pressure differentials. By incorporating a series of closely spaced annular grooves on the piston’s periphery and maintaining a larger clearance between the piston diameter and the cylinder’s walls, this design minimizes fluid leakage not only when the equipment is new but also as it undergoes wear.

Career Highlights

Harold L. Petrie's professional journey features a noteworthy history of working with established companies in the petroleum sector. He has been associated with Kobe, Inc. and Armco Inc., bringing his inventive skills to these respected organizations and contributing to advancements in technology.

Collaborations

Throughout his career, Petrie has collaborated with fellow innovators in his field, including John W. Erickson and Francis Barton Brown. These partnerships have played a crucial role in fostering an environment of creativity and innovation, leading to the development of cutting-edge solutions in hydraulic systems and oil production.

Conclusion

Harold L. Petrie's contributions to innovations in oil production demonstrate the value of creativity in engineering. With his continuous dedication to developing practical solutions, he remains an influential figure in the field, inspiring future generations of inventors to push the boundaries of technology.