Mark Carmichael

Title: Mark Carmichael - Innovator in Downhole Tool Technology

Introduction

Mark Carmichael is a notable inventor based in St Mary, GB. He has made significant contributions to the field of downhole tool technology, particularly through his innovative patent that enhances the functionality of hydraulic systems used in drilling operations.

Latest Patents

Carmichael holds a patent for a "Circulating Sub and Method," which is designed for use with hydraulically operated downhole tools. This invention features a control sub that comprises an outer sleeve connected to a work string and an inner sleeve that is slidably engaged with the outer sleeve through matching hex profiles. The inner sleeve is connected to the downhole tool, allowing for efficient operation. The design includes radial ports in the outer sleeve that enable selective circulation of fluid from the tool. By closing these ports with the sleeve, fluid pressure within the downhole tool can be effectively controlled. The closure is achieved by applying weight on the sub against the tool, ensuring reliable operation. Additionally, an indexing mechanism is incorporated to maintain the tool's configuration, which is crucial for sustaining pressure on the tool. This sub is particularly suitable for use with an expander tool.

Career Highlights

Mark Carmichael is associated with Specialised Petroleum Services Group Limited, where he applies his expertise in developing advanced solutions for the petroleum industry. His work focuses on enhancing the efficiency and reliability of downhole tools, contributing to improved drilling operations.

Conclusion

Mark Carmichael's innovative contributions to downhole tool technology exemplify the impact of inventive thinking in the petroleum sector. His patent for the circulating sub demonstrates a significant advancement in hydraulic tool operation, showcasing his commitment to enhancing industry practices.