Faster Subsea Hydraulic Equipment Startups

by | Jul 7, 2015 | Downhole, Industry, Measurement Instrumentation, Oil & Gas, Subsea, Valves, Actuators & Regulators

Jim Cahill

Chief Blogger, Editor

Offshore oil and gas producers use hydraulic power to operate much of their subsea equipment. This equipment includes valves, cylinders, motors, manifolds, blowout preventers and remote operated vehicles to name a few. Pressure regulators in Hydraulic Power Units (HPUs) help ensure the required hydraulic pressure is available for this equipment.

One of the challenges in pressurizing this equipment is the time it takes for the hydraulic pressure to reach the right level given the distance the fluid must travel in subsea and downhole equipment. It may take hours to pressurize umbilicals running from the surface to the subsea equipment.

Emerson’s Wendell Love


Emerson’s Wendell Love shared a presentation with me about the TESCOM 50-4000 Series regulators, which control high-pressure water glycol fluids. To address the time lag challenge, this series of regulators includes integrated bypass valves, which decrease pressurization time.

Regulators on a production HPU or wellhead control panel can have a 40-70% failure rate during startup due to the massive pressure differential upstream and downstream of the regulator. This bypass valve also extends the service life of the regulator by helping the pressure regulator avoid the high initial differential pressure.

This quick 1:47 YouTube video, Hydraulic Power Unit Regulator, show how this bypass path works in startup mode and how the control regulator takes over when the pressure differential upstream and downstream of the regulator drops. This bypass mode allows for up to 33% faster startups than traditional pressure regulators.

https://www.youtube.com/watch?v=QkGlVWYUkzc

Oil and gas production coming online sooner coupled with fewer pressure regulator failures may mean financial performance improvements in the hundreds of thousands or millions of dollars for an offshore platform.

You can connect and interact with other oil & gas and pressure regulator experts in the Oil & Gas and Regulators groups in the Emerson Exchange 365 community.

Submit a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Submit a Comment

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Subscribe for Updates

Follow Us

We invite you to follow us on Facebook, LinkedIn, Twitter and YouTube to keep up to date on all the latest news, events and innovations to help you take on and solve your toughest challenges.

Want to re-purpose, reuse or translate content?

Please do, Just link back to the post and send us a quick note so we can share your work. Thanks!

Our Global Community

Emerson Exchange 365

The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.