Mark W Presslie

Title: Mark W Presslie: Innovator in Wellbore Completion Systems

Introduction

Mark W Presslie is a notable inventor based in Aberdeenshire, GB. He has made significant contributions to the field of wellbore completion systems, holding 2 patents that showcase his innovative approach to engineering solutions in the oil and gas industry.

Latest Patents

One of his latest patents is a wellbore completion system with a reaming tool. This completion system comprises tubular components that are coupled together to form a completion string. In-flow control devices are integrated to allow selective fluid communication between the internal bore of the completion string and the annulus. The reaming tool, located at the leading end of the completion string, is designed to be run into the borehole alongside the completion string. It features a fluid-powered drive unit, a reaming body, and a reaming nose. During operation, fluid is directed to the reaming tool to facilitate the reaming of the borehole. Additionally, a second tubular in the form of a washpipe may extend through the internal bore of the completion string to provide fluid to the reaming tool. Notably, the reaming tool operates at a fluid pressure that is below the threshold required to activate the in-flow control devices.

Another significant patent by Presslie is a centralizer for expandable tubulars. This multi-part centralizer can be quickly secured to tubulars that are to be cemented and expanded in a deviated wellbore. The segments of the centralizer ratchet with respect to each other, allowing it to hold snugly against the tubular during delivery downhole and cementing. After the cementing process, the expansion of the tubular is not significantly resisted by the centralizer, as its diameter increases in conjunction with the expanded tubular below it. The end position after expansion is maintained due to the ratchet feature, ensuring the fixation of the centralizer as the cement sets.

Career Highlights

Throughout his career, Mark W Presslie has worked with prominent companies in the industry, including Baker Hughes Corporation and Deep Casing Tools, Ltd. His experience in these organizations has contributed to his expertise and innovative capabilities in wellbore technology.

Collaborations

Presslie has collaborated with notable professionals in his field, including William J Hay and Lance S Davis. These collaborations have likely enriched his work and contributed to the