Turbulence Control

By CT2 Staff05 December 2016

Reduction of pulsation, vibration and noise through modification of piping

Enlink, formerly Devon Energy, maintains separation and processing plant facilities intended to separate heavier hydrocarbon constituents. At one of these locations, a number of significant issues with a turbine ex- pander/process compressor system had existed for an extended period of time, with the issues primarily occurring on the compressor side of the system.

A partial history of the issues experienced by this unit details noticeable and problematic vibration, unit failures and shutdowns, as well as a persistent noise issue in the vicinity of the unit and a downstream cooler. Specific failures of the unit itself included broken blades on the compressor wheel, sheered diffuser plate bolts, and diffuser plate damage. Unit outage due to these failures occurred three times in a 2.5-year period, with a mean time between failures of less than a year.

The operating conditions of the unit are incoming production stream gas entering the compressor at 600 psig (4137 kPa gage) and exiting at approximately 750 psig (5171 kPa gage). The gas then enters an expander at 725 psig (4999 kPa gage) after passing through an air cooler — for condensation of the heavier liquids in the hydrocarbon stream — and exits the expander at 150 psig (1034 kPa gage) for further processing.

Initial field-testing

Testing setup and conditions

After Southwest Research Institute (SwRI) was contracted to aid in resolving the issues with the machinery, key information was gathered in a field study performed at the Bridgeport facility in Texas. Measurements were also made on a similar installation at a second facility (Northridge) in Oklahoma. Measurements made at both facilities included vibration measurements, sound level measurements and, where possible, pressure pulsation measurements. These measurements were used in the comparison of the two different facilities, and eventually in comparison with computational fluid dynamics (CFD) models for critical piping stretches. . . .

Read the full story in the October issue of COMPRESSORTech2.

MAGAZINE
NEWSLETTER
Delivered directly to your inbox, CompressorTech² News features the pick of the breaking news stories, product launches, show reports and more from KHL's world-class editorial team.
CONNECT WITH THE TEAM
Mike Brezonick
Mike Brezonick VP, Power Division Tel: +1 262 754 4112 E-mail: mike.brezonick@khl.com
Pete Ballistrieri Sales Manager Tel: +1 262 754 4131 E-mail: pete.ballistrieri@khl.com
CONNECT WITH SOCIAL MEDIA
Latest News
Why ESG-linked loans are impacting construction finances
A way to help fight the climate crisis or a pile of greenwash? How ESG-linked loans are entering the corporate mainstream 
World gas prices hit record levels
Rebound from record lows seen in the summer of 2020
Rotating Machinery Services buys ATS
ATS offers experienced technical field advisors, rotating equipment planners & schedulers for turbine, compressor and generator repair