Traditional Oil Mining Equipment – Offshore drilling is an integral part of oil and gas production, and is the process of extracting oil from under the world’s oceans. Offshore platforms are needed to access this oil.
Offshore drilling rigs have been around for years and have evolved into huge structures that can house hundreds of people and perform numerous tasks. Some offshore oil platforms sit on towers higher than skyscrapers and can reach depths of 1,220 meters below the surface of the water.
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Offshore oil platforms can take many forms and, depending on the environment, can be fixed to the seabed, consist of artificial islands, or even float.
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To provide products such as pipes, fittings and flanges that are essential for the efficient operation of offshore oil platforms, our customers around the world often request special pipe materials.
Many of the exotic materials we specialize in, such as super duplex stainless steel, are regularly found in equipment such as offshore oil platforms, separators, scrubbers, pumps, collectors, heat exchangers, flow lines and storage tanks. Because super duplex stainless steel is extremely strong and corrosion resistant, it can perform well in potentially corrosive marine environments and subsea environments such as deep sea drilling.
This blog will provide an overview of offshore drilling, including the various processes and what it’s like to live on one offshore rig!
Searching for oil and gas under the sea is more difficult than traditional wells on land, so offshore drilling rigs are needed. All aspects of the process, including extraction, transportation, and environmental protection, are more complex.
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First, the offshore gas drilling platform will be built, and once completed, a subsea drilling model will be required. It is used to start drilling without water flowing into the hole being drilled or oil escaping into the sea. The design of an offshore rig is basically a large metal box with a hole in it. It is used to guide the drilling process and determine the location of each production well.
Once the borehole area is established, the drill pipe can be connected and the drill bit at the end can be used to drill deep into the ground surface. In deep well drilling, drilling mud is used to lubricate the drill bit, seal the well wall, and control the pressure inside the well.
The drilling process itself is a step-by-step process, where each well section is drilled, then a packer is sent down the well and lined with metal casing before being expanded and sealed.
To prevent oil explosions, offshore drilling rigs are equipped with a system that seals the well using a hydraulic piston in case pressurized oil flows to the top of the well on the seabed. This prevents costly accidents and pollution.
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After drilling a new oil well, the focus shifts to extracting valuable oil. The first task is to close the well and install a production casing to control the flow of oil.
Explosives are used to drill at various depths and allow oil and gas to enter the well at a controlled and reasonable pressure.
Over time, the pressure in the oil tank may decrease, so a pump is needed to ensure continuous flow. Sometimes this involves injecting water or gas into the reservoir, or otherwise sending steam into the well to heat the oil, thereby increasing its pressure and allowing it to flow more easily.
It is important to note that the fluid being lifted from the well to the platform is a mixture of crude oil, natural gas, water and sediment. This mixture needs to be separated, and some offshore drilling rigs have complex manufacturing facilities capable of separating this mixture. There are also companies that have converted oil tankers into their own fleets so that they can process and store oil at sea. However, the majority of oil refining takes place onshore in dedicated facilities.
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Basically, primary processing takes place on offshore drilling rigs, and the oil and natural gas are then transported via subsea pipelines and oil tankers to onshore production plants, storage facilities and refineries.
There are approximately 1,500 offshore drilling rigs worldwide, each of which must be commissioned and operated by skilled production teams. On average, 200 people are needed to operate each offshore drilling rig efficiently.
Offshore workers are highly educated individuals who need to work hard and follow best practices while operating heavy machinery and sometimes complex tasks.
Travel to the rig is always by helicopter, and many offshore jobs require 2-3 weeks on the rig followed by 2-3 weeks ashore, although patterns can be longer or shorter depending on the situation.
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All offshore vehicles have a dedicated galley serving fresh food prepared daily in a self-service style canteen. Fresh food is regularly loaded into the rig, which helps keep the crew healthy.
Because offshore drilling operations are so intense, workers are often not allowed to drink alcohol, and smoking is only allowed in designated, strictly controlled areas.
Oil rigs are generally very close-knit communities, with engineers and other workers often sharing cabins and bathrooms. On-rig entertainment facilities are great for keeping workers entertained during off-duty hours. You’ll often find that small movie theaters, pool tables, TVs, video games, and WiFi are essential parts of deck life.
This concludes the overview of offshore platforms. Contact a member of our team today to learn more about how Special Piping Materials provides some of the most important elements of offshore drilling.
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