A casing and tubing string consists of hundreds of individual Oil Country Tubular Goods. The diameters and lengths vary, but all of the tubes have one thing in common: They are made out of high-strength steel.
Oil Country Tubular Goods are predominately made from high-strength steel, which provides the required material properties while also representing the most economical solution. In a single wellbore, Oil Country Tubular Goods with various diameters are used at a wide range of depths – this is primarily casing that telescopes down in size at the bottom.
Facts and figures:
- Oil Country Tubular Goods generally have an outside diameter of between 48.26 and 508 mm (= 1.9 and 20 inches).
- They are normally manufactured in individual pieces. Tubing comes in lengths from 853.44 to 975.36 cm (28 to 32 feet), casing comes in lengths from 1,158.24 to 1,341.12 cm (38 to 44 feet).
- The price depends on the size and quality – this usually ranges between 1,000 and 2,500 US dollars per metric ton.
- voestalpine Tubulars GmbH & Co KG produces tubing with an outside diameter of between 1.66 to 4.5 inches (42.2 to 114.3 mm) and casing of 4.5 to 7 inches (114.3 to 177.8 mm).
A casing string with a 7,000 m length (= 22,967 feet), for instance, is composed of approx. 575 individual tubes (22,967 divided by 40 = 575).
The latest video from the voestalpine image and brand campaign focuses on Oil Country Tubular Goods, produced in Austria and installed in America. An ongoing blog series offers further insight and background information about the product, the areas of application and the market as well as about Robert Scott, the star of the campaign.