Company Filing History:
3 out of 104 
1 out of 63 
1 out of 832,843 Years Active: 1993-2020
Title: John Keith Caulfield: Innovator in Subsea Technology
Introduction
John Keith Caulfield is a notable inventor based in Houston, TX (US), recognized for his contributions to subsea technology. He holds a total of 5 patents, showcasing his innovative approach to solving complex engineering challenges in the oil and gas industry.
Latest Patents
Caulfield's latest patents include a "Method for pulling a crown plug" and a "Method and apparatus for pulling a crown plug." The first patent outlines a method that involves providing a subsea lubricator with a longitudinal through bore, utilizing a jacking string with a landing sub and a crown plug connector. The process includes lowering the subsea lubricator to a Christmas tree, connecting the plug connector to the crown plug, and applying tensile forces to release the crown plug from the Christmas tree. The second patent details a similar method and apparatus, emphasizing the steps of lowering the subsea lubricator, connecting the jacking string, and raising the crown plug to the surface while ensuring the lubricator remains attached to the Christmas tree.
Career Highlights
Throughout his career, John Keith Caulfield has worked with prominent companies in the industry, including Tetra Technologies, Inc. and National Oilwell, Inc. His experience in these organizations has contributed significantly to his expertise in subsea operations and technology.
Collaborations
Caulfield has collaborated with various professionals in his field, including his coworker Patrick William Brown. Their joint efforts have likely led to advancements in the methodologies and technologies used in subsea operations.
Conclusion
John Keith Caulfield's innovative patents and career in subsea technology highlight his significant contributions to the industry. His work continues to influence the methods used in oil and gas extraction, showcasing the importance of innovation in engineering.