[Posted on October 9th, 2013 by Bill Stewart]
Cable dynamics is a big part of offshore drilling because you have to maintain stability at all times. Each time you add more weight, the cables have to be adjusted to ensure there are no problems with the overall stability. This means it has to be a primary focus with each and every thing that you do on the rig.
There are a lot of things that need to be considered when you set up an oil rig. You need to look at offshore living to ensure all of your workers have a place to sleep as well as to entertain themselves when they are not working. This is added weight on the rig and will affect cable dynamics.
You will need to look at steel catenary risers to accommodate all of the waves that you will encounter. Each and every area of the world has different wave patterns. As a result, you will not be able to use the same cable layout every time. It will have to be recalculated because you will have a completely different list of “what if” scenarios to worry about.
Your goal is to minimize the number of problems that can occur when you are out on the rig. Each and every time there are rig problems, it ends up in the news. Any bad press is enough for investors to pull out of your project and this needs to be avoided at all costs, literally.
With cable dynamics, you can ensure the calculations are accurate by using the right software. You can also have a professional analysis done to run the calculations for you again. This extra set of calculations can ensure that you have the weight effectively managed and balanced and that you have thought about how the water is going to play into the stability of your rig.
Depending upon where your rig will be, there are going to be all sorts of things that can happen. If there is a large storm while you are out there, the waves are going to get larger and this is going to send the rig in motion. If you focus enough on the cable dynamics, you will have enough tension in the cables but provide enough slack to avoid anything snapping. The last thing you want to do is lose equipment because you didn’t make accurate assumptions about your environment.
There is enough to worry about in the world of offshore drilling that you don’t need something else to worry about. You may not have a technolgy expert on your rig and this means that you need someone else to be able to run your numbers for you.
If you take the time to focus on cable dynamics, much of the other things that are of a concern will fall into place on their own.