Dril-Quip has patented a system and method to reduce bending stress in flange bolting for subsea well equipment. The design includes a compound hub flange with aligned apertures and a bolt, creating a circumferential groove without a sealing surface. This innovation aims to enhance the durability of flange connections. GlobalData’s report on Dril-Quip gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Dril-Quip, Underwater drilling platforms was a key innovation area identified from patents. Dril-Quip's grant share as of May 2024 was 59%. Grant share is based on the ratio of number of grants to total number of patents.
Compound hub flange system for reducing bending stress
A recently granted patent (Publication Number: US11959567B2) discloses a system comprising upper and lower compound hub flanges with aligned apertures connected by a bolt, forming a circumferential groove between the inner and outer hub faces. This groove, which is not a sealing surface, allows for increased flexibility between the flanges when subjected to thermal gradients. The system also includes a gap between the outer faces of the upper and lower flanges, providing room for movement.
Furthermore, the patent describes a system with a compound hub flange connected to a piece of equipment through a bolt, forming a groove between the inner and outer hubs. The piece of equipment has a continuous face contacting both hubs, with the bolt threaded into the equipment. The design allows for flexibility and improved performance under thermal gradients, with variations in the length and threading of the equipment's aperture to accommodate different configurations.
To know more about GlobalData’s detailed insights on Dril-Quip, buy the report here.
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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.
GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
