Titanium applications in the oil and gas industry
The global oil and gas market has come to rely more and more on the use of titanium. The metal has a high strength-to-weight ratio and excellent corrosion resistance for the most challenging applications. It is particularly beneficial for exploration, production and refining. Read on and discover more about the use of titanium in both industries.
Titanium Use - Oil and Gas Industry
In the petroleum industry, titanium is used for exploration and production. You will also see titanium being used in construction, engineering and refining. Today, pipes are dominated by titanium, and underwater operations rely on it for its excellent corrosion resistance (seawater is known to be very corrosive).
Different grades of titanium are used to develop heat exchangers (shell and tube, plate) as well as pumps and valves. Data logging equipment, various fixtures and fittings, and tanker decontamination systems can be developed with titanium. Submersibles and cathodic protection anodes for underwater operations complete the list of titanium applications.
In recent years, titanium has begun to be used to make downhole pipes. These are the components of oil and gas wells that require excellent corrosion resistance and amazing strength. Titanium is now used in HPHT well applications - high pressure and high temperature - to exhibit resistance not only to corrosion but also to stress corrosion cracking.
Why is titanium the most popular?
As interest in hydrocarbon reserves becomes more prominent, wells for extraction are reaching deeper levels. This means that the equipment used must be able to withstand higher temperatures, as well as higher levels of compressive and tensile loads. Titanium seems to be the right response to all of these demands.
High levels of activity in the oil and gas industry have further boosted the demand for titanium. Corrosion-resistant alloys, such as those made of titanium, are especially used in tubular equipment.
Alpha-phase titanium alloys have the highest corrosion resistance, but it is important to know that all titanium alloys are resistant to fluid damage (especially from seawater). The corrosion resistance of titanium is guaranteed by the oxide layer on the metal surface, which is also the reason for its increased strength and stability.
Low-pressure seawater piping is made of titanium, along with coiled tubing, bolts, and various downhole tools. Drilling risers and riser cone joints are made of titanium and its alloys (different grades). In the future, manufacturers hope that the metal could be used in subsea pipelines.
Titanium, a versatile metal used in the oil and gas industry
The oil and gas industry sees titanium as a versatile and valuable metal. Recognizing the incredible qualities of titanium, manufacturers have started adding titanium to steel alloys. This not only increases the strength and density of the material, but also improves corrosion resistance.
Titanium-steel alloys are widely used today, especially for lining downhole tubing. Compressor parts are also made of high-strength titanium alloys. These parts are durable and guarantee a longer service life than parts containing only steel alloys.
The fact that titanium is seawater resistant is not news. However, it is worth mentioning that titanium also exhibits excellent corrosion resistance in other environments, including carbon dioxide and hydrogen sulfide environments.
In the natural gas industry, it is preferred because of its ability to maintain its strength at extremely low temperatures (for the liquefaction of natural gas). The pipes of the heat exchanger are made of titanium and are used in LNG plants. You will also see titanium being used to line pressurized vessels such as LNG tankers.
Titanium in Offshore Applications
The offshore oil and gas industry relies heavily on titanium and its alloys for a wide range of applications. This metal is appreciated for its excellent corrosion resistance, not only in seawater but also in refinery environments.
The demand for titanium in offshore applications has increased dramatically over the past few years. This is especially evident in the Norwegian waters of the North Sea, where titanium and its alloys are often used. The use of titanium eliminates the corrosion problems faced by steel (especially crevice corrosion). Today, fire and water pipes, low pressure ballasts and various fittings are developed with titanium.
Unlike a few years ago, titanium now has a competitive and fairly stable price. Given this stability, it's no surprise that it is used to develop a variety of products, including pipes, fittings and various systems, all of which are used in offshore applications.
Cold bending is used to make titanium tubes, as this method greatly reduces welding work. Due to the light weight of the titanium tube, the installation process is simple and does not require more than one person. Also, pipes made of titanium do not need to be painted. Shot peening and pipe finishing (after installation) are also not required.
Titanium pipes are also used in fire protection systems. The thin-walled welded titanium tube complies with current fire regulations and has also passed fire tests. They have unmatched impact resistance and high resistance to damage. This means they have the best chance of surviving in the event of a fire, explosion, etc.
On offshore platforms, titanium fire water systems are often used. The same goes for titanium pipes, valves and nozzles. Even flood system detectors and sprinklers are made of titanium. High pressure heat exchangers are made of titanium alloys, the most common being Ti-6A1-4V. These offer considerable advantages with reduced weight and bulk.
In short, titanium has a well-deserved role in the oil and gas industry. Its strength-to-weight ratio and corrosion resistance are particularly appreciated for seawater applications. The offshore industry relies heavily on the use of titanium and its alloys, whether for fire protection systems, heat exchangers or pipes.
