Ensure Structural Integrity With Riser Analysis

[Posted on July 24th, 2013 by Bill Stewart]

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When it comes to offshore drilling, there are plenty of opportunities to get involved with drilling and exploration and riser analysis is a must. As your company gains contracts and you send rigs out into the deep waters, you need to look at how the risers are selected and used.

Regardless of whether you are using flexible or rigid pipelines, it’s necessary to look at the static and dynamic stress – and this is one of the things that can be done during riser analysis. This ensures you have thought of everything, including load capacities. As you do this analysis, it will allow you to choose the most effective risers for the job.

Many offshore drilling companies have begun using flexible risers as the default riser style because it can deal with horizontal and vertical forces. While this is true, it is not always going to be the best when it comes to fatigue – and this is another instance where riser analysis can show you what is truly going on so you can make an accurate assessment as to the risers you obtain as well as the design that you put into place.

Where you will be drilling matters. The water in one part of the world is going to be entirely different than the water in another part of the world. Waves, temperature, salinity and various other factors must be calculated. You will need a vortex-induced vibration assessment to ensure you have captured every possible scenario.

A sound structure is of the utmost importance. You will likely have a plan in place should you have an emergency disconnect of a riser, however you want to prevent this scenario from happening to begin with – and this is why it is of the utmost importance to spend the time ahead of time to get the riser analysis done.

There are several ways to achieve this analysis – and it shouldn’t be a choice as to which you should do – you should be doing both simply to run your numbers in multiple ways. The first is to use software to run the calculations and scenarios. OrcaFlex is a popular software program to run scenarios when you are offshore drilling. It will do a lot of assessment and analysis on your behalf. The second is to work with a consulting group that will run a variety of scenarios by you as well as look at the design of your rig with risers to ensure structural integrity is maintained throughout the scenarios.

Once you get out into the deep waters, you are a long way away from assistance of any sort. You will have communications, but it can take a while for someone to get out to you. If you lose structural integrity, you lose everything – and that’s not something you should deal with. Riser analysis can be the way to double check all of your calculations before heading out.

Flexible Risers Provide More Options In Offshore Drilling

[Posted on July 17th, 2013 by Bill Stewart]

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When you create a rig offshore, you need to focus on flexible risers. These kinds of risers are able to withstand vertical as well as horizontal movements. This makes them one of the most ideal options for floating facilities. Originally used to connect production equipment aboard floating facilities, it is now being used as the primary riser solution offshore.

As you look into riser technology, it’s important to know about the different configurations available for these risers. This includes a lazy S and a steep S which will utilize various anchored buoyancy modules. As you use these different configurations, you will also want to use riser analysis to ensure you know what you are getting.

It can be of great assistance to use software in order to learn about how the different flexible risers will operate in the water once you have placed them. Without going through a variety of tests on land, you are going to run into a variety of problems off land. Software can provide you with a variety of results to ensure you have made the accurate configurations for what you will be doing and where you will be doing it.

For example, when you use flexible risers, you will want to consider stress technology and simulate the recoil that will occur if you have to make an emergency disconnect. You will need to understand the operating limits including tension, stroke, and heave as it results to riser recoil. To ensure you have thought about all of these aspects, it can also be advantageous to work with an technology firm that specializes in offshore drilling.

Various components will be used along with flexible risers. You may need telescopic joints, keel joints, suspension joints, and various other things. It all depends on where you will be doing the drilling and what kinds of conditions your materials will be exposed to.

Ultimately, while risers provide you with a significant number of options for offshore drilling, it is still important to focus on riser capability and analysis. This means looking at tube wall thickness, riser configurations, buoyancy effectiveness, and various other aspects.

Having a flexible drilling riser is going to provide you with flexibility – but this is not enough. You have to focus on all of the other areas to ensure that you have a strong rig going forward. You also have to consider emergency situations – as they are more likely to occur offshore then you may realize.

With a strong combination of analysis software and technology consulting, you will be able to use flexible risers throughout your rig and use them with confidence knowing that they are going to handle everything that your environment is going to throw at them. Additionally, you will have the know how to respond in the event of an emergency, regardless of how major that emergency may be.

Tips For Cable Dynamics With Offshore Drilling

[Posted on July 10th, 2013 by Bill Stewart]

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It’s important that you focus on cable dynamics when you create an oil rig because you don’t want anything to go wrong. The productivity of your oil rig depends on all of the cables. This includes the length of the cables, how they will respond to the different environments as well as the strength that they are able to hold.

The last thing you want is to encounter oil rig accidents. Not only can it lead to fatalities but it will be all over the news. You don’t need any bad press against your business, which means that cable dynamics has to be a top priority.

You need to work with a professional company that can provide you with technology consultations. This allows someone to take a step back and look at your project with a different set of eyes. As a result, you can ensure you are getting the type of work you need done. You will be able to build everything with the knowledge that you are using the right cable setup.

You cannot rely solely on books to teach you all about cable dynamics. You need to know about all of the different supplies that are available to you – such as flexible risers to help simplify water pumping.

The cabling is of the utmost importance because it will keep you afloat when you are thousands of miles off shore. You do not have anything if you do not have a strong support system. Various things will be hanging from your boat – and if the cabling is not strong enough and not set up accurately, it’s going to cause a lot of problems for you.

Software can be used to help with various aspects of cable dynamics. This allows you to measure everything and place a variety of scenarios into the computer to ensure you have thought of everything. Remember that because of the water depth as well as the waves that are created, your cabling will need to hold up to all of it.

The idea is to measure twice and cut once. The principle that is used in building can be used in offshore drilling as well. Measuring two or three times with the help of software and with technology consultants can save you a lot of time – and a lot of money. Once you get into the water, you need to run efficiently – and you cannot afford for accidents to happen.

This is why it is imperative to work with a company that understands offshore drilling. Finding a company with years of experience in design and cable dynamics can ensure you have thought of everything before you get out onto the water. Offshore drilling can be rewarding as well as dangerous, so cabling has to be a top priority even before you venture offshore and into the unknown.

Analysing Steel Catenary Risers is Stewart Technology Associates Bread and Butter

[Posted on July 3rd, 2013 by Bill Stewart]

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If you are in the business of operating a deep sea oil rig then you need to talk to the offshore marine specialists at Stewart Technology Associates regarding steel catenary risers and the technical aspects of your mooring system.  Face it, you are working in a demanding environment and everything needs to work perfectly to ensure maximum productivity from your rig, and maximum safety for your crew.  Stewart Technology Associates have been delivering maritime solutions for more than a quarter of a century.

As rigs move into deeper and deeper waters in search of oil the complexity of their design requirements, and the costs associated with retrieving the oil increases exponentially to the challenges posed by the physical environment around them.  As such, throughout the industry, interest is mounting for cost effective solutions for the development of steel catenary risers that are up to the critical task of securing offshore pipeline to your oil production platform.

Utilizing the powerful technology of Orcina’s OrcaFlex software packages, Stewart Technology Associates are recognized as an industry leader in the research and analysis of cable dynamics systems, and has consulted with major gas and oil companies around the world, the United States Navy, and the U.S. Coast Guard to arrive at innovative mooring solutions for a host of associated deep sea environmental challenges.

If risers are a concern, they have a solution for you from top tensioned risers to flexible risers to steel catenary risers and more.  They will harness the highly specialized power of Orcina’s state of art computer software, coupled to decades of experience working in the industry, to solve your technology conundrum.

Those who are in the know in the offshore drilling game know that Stewart Technology Associates can be counted on to isolate their mooring problems, develop innovative solutions, and provide expert advise on implementation of a workable answer that ensures that your drilling operation is not downed for technical reasons when you need it the most.  You can count on them to provide a detailed analysis of your operation that will indicate an appropriate road map to arrive at a specific solution to your specific problem.  When the stakes are high, you bring in the experts to make sure that your equipment and procedures are up to the task that is demanded of them.  Stewart Technology Associates are those experts.

The management, technology experts, and design team at Stewart Technology Associates pride themselves on their consistent delivery of excellence in the maritime oil recovery industry.  From innovative software packages to providing expert marine witnesses to ensuring the maximum efficiency of your offshore rig, Stewart Technology Associates are a trusted partner in the development of offshore platform solutions that firms are looking for today.

Contact them today to find out how they can streamline your process and safeguard your crew as they go about the extraction of oil from the sea floor.  Everything from steel catenary risers to the dynamic analysis and design of critical components is on the table when you contact the experts at Stewart Technology Associates.  Let them help you solve today’s problems with tomorrow’s technology.

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