Friedhelm Makohl

Title: Friedhelm Makohl: Innovator in Drilling Technology

Introduction

Friedhelm Makohl is a notable inventor based in Hermannsburg, Germany. He has made significant contributions to the field of drilling technology, holding a total of 11 patents. His innovative approaches have enhanced the efficiency and effectiveness of drilling operations, particularly in challenging environments.

Latest Patents

One of his latest patents is a drilling and cementing casing system. This method and associated equipment allow for drilling at least a portion of a well and subsequently cementing casing in a single trip. This technique is particularly suited for deep-water offshore operations, where the drill string can be run through a section of casing, leaving a bit and an under-reamer extending below. The casing is equipped with ports for cement pumping and an external casing packer to prevent uncured cement in the annulus from U-tubing. Several casing sections can be run in during drilling and cemented in succession using this one-trip method.

Another significant patent is the formation resistivity measurement sensor contained onboard a drill bit, known as "resistivity in bit." This method and apparatus obtain resistivity measurements of the earth formation surrounding a borehole in a Measurement While Drilling (MWD) device. It uses electrodes for injecting current into the earth formation and obtaining a responsive signal from the borehole. The electrodes are located on the drill bit arm or blade, allowing for resistivity values to be measured at the drill bit's location. Measurements can be taken in both oil-based and water-based mud environments, providing maximum or minimum resistivity to best represent the surrounding formation.

Career Highlights

Friedhelm Makohl has worked with prominent companies in the industry, including Baker Hughes Corporation and Eastman Christensen Company. His experience in these organizations has allowed him to develop and refine his innovative ideas in drilling technology.

Collaborations

Throughout his career, Makohl has collaborated with notable professionals in the field, including Philip Burge and Peter Fontana. These collaborations have contributed to the advancement of drilling technologies and methodologies.

Conclusion

Friedhelm Makohl's contributions to drilling technology through his patents and collaborations have significantly impacted the industry. His innovative methods continue to enhance drilling operations, particularly in challenging environments.