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Hatboru - Casing Pipes
Casing pipes are used for keeping the walls of OCTG wells rigid during the extraction of Petroleum, Natural Gas, Hot Water, Vapor as well as Salt and similar solid materials. Range of Steel materials of Casings are defined from low strength to high as H40, J55, K55, N80-Q, M65, L80, C90, C95, T95, P110 and Q125 which are manufactured according to API Standards. Depending on the depth of well and casing string order, pipe diameters, wall thicknesses, steel material and thread type selection are performed and high security coefficients are targeted. Diameters of casing pipes vary between 4-1/2” (114,3 mm) and 20” (508,0 mm) according to API standards.
Casing pipes, like other well pipes, are connected to each other by means of sleeves and are lowered. API (American Petroleum Institute) standards are mostly used in the production of these pipes. Depending on this standard, 3 different types of thread are used in Casing pipes. These teeth are known as STC (Short Tooth Casing), LTC (Long Tooth Casing) and BTC (Buttress Tooth Casing) and are opened according to API 5B standard.
These pipes, which are produced in API 5CT standards for use in hot water wells, oil and natural gas wells, are shipped straight-ended or according to customer demand by threading and belling in accordance with API 5b standard and filter opening and coating processes.