Fuzimasa Kohyama

Title: Fuzimasa Kohyama: Innovator in High Gas-Leak-Tightness Technology

Introduction

Fuzimasa Kohyama is a notable inventor based in Kitakyushu, Japan. He has made significant contributions to the field of oil and gas well technology. His innovative designs focus on enhancing the safety and efficiency of threaded joints used in these applications.

Latest Patents

Kohyama holds a patent for a "Threaded joint with high gas-leak-tightness for oil and gas well pipe." This invention features a box with an internal female thread and a pin with an external male thread, which are screwed together for use. The design includes a non-threaded tip portion of the pin that has a front shoulder formed stepwisely and a tip shoulder. Between these shoulders, a conical face is tapered toward the tip side of the pin. The corresponding non-threaded portion of the box has two shoulders that align with the pin's shoulders, ensuring a secure fit. The unique aspect of this threaded joint is that the sealing occurs at the final stage of make-up, providing enhanced gas-leak-tightness.

Career Highlights

Kohyama is associated with Nippon Steel Corporation, where he has been able to apply his innovative ideas in a practical setting. His work has contributed to advancements in the oil and gas industry, particularly in the development of safer and more reliable equipment.

Collaborations

Kohyama has collaborated with notable colleagues such as Sigeyuki Akase and Yasusuke Inoue. Their combined expertise has furthered the development of technologies that address critical challenges in the industry.

Conclusion

Fuzimasa Kohyama's contributions to the field of threaded joints for oil and gas applications demonstrate his commitment to innovation and safety. His patent reflects a significant advancement in technology that enhances the integrity of oil and gas well operations.