Guide to Steel Catenary Risers •

Guide to Steel Catenary Risers

[Posted on October 2nd, 2013 by Bill Stewart]

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Many oil rigs will need to implement steel catenary risers in order to keep their pipelines operating correctly.  They are a surprisingly integral part of these different operations, including cable dynamics.  If you need to buy these units, you will need to make sure that you are getting the right fit for your rig.  They should be also be able to withstand quite a bit of pressure from waves that undulating around the pipeline.  If you haven’t bought these units before, you might want to read through some basic information first.  This can help you make sure that your risers are being installed properly.

First, oil rig operators should carefully think about the way that these steel caternary risers function with these different platforms.  An oil rig will typically sit on one location above the ocean floor.  But it may have several pipes that extend outwards to reach different deposits of oil that are underground.  If your oil rig operates in deep water environments, you may have pipelines that extend outwards for hundreds of feet.  These pipelines will need to remain relatively stable in order for them to function properly.  This may affect the return rate that oil rigs get when the draw from an underground source.

In order to get the right steel catenary risers, it can be important to understand some basics about cable dynamics.  You may have different sizes and weights to your descending pipelines, so you will need to get the right risers for this.  Many oil rigs will be able to work in conjunction with technology experts to anticipate the right risers that they may need.  You will want to make sure that that risers are lifting the pipeline to a specific curvature underwater.  These risers will provide the strongest connection between the pipelines and the oil rigs themselves.

You may also want to look for steel catenary risers that will be graded for different water pressures.  Many of them can operate at water pressure gauge up to 5000 psi, which can help them resist a good amount of wave intensity.  There are many underwater currents that can put a high degree of pressure on these pipelines.  The steel catenary risers you put on your pipeline will be your first line of defense against this.  This is why it can be important to make sure that your risers fit snugly against the exterior of the pipeline itself.

Finally, some oil rig operators will want to see about checking in on the quality of their installed risers from time to time.  They can degrade eventually, so they will need to be replaced.  If they haven’t had routine repairs, they may lose their grip on the pipeline.  Watch for warning signs, like whether the pipeline itself begins to sag or sway unexpectedly.  This can be a clue that repairs or replacements need to conducted somewhere along the course of the line.

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