Type Of Casing

Different types of casing used in the oil extraction process:
Surface oil casing: Protects the well from shallow water and gas contamination, supports wellhead equipment and maintains other layer weight of the casing.
Technology Oil casing: Separate the pressure at different levels to allow the normal flow of drilling fluid and protect the production casing. Install anti-blowout, anti-leak and liner in the well.
Oil casing: The extraction of oil and gas from a reservoir beneath the earth's surface. Used to protect drilling and layer drilling mud. When oil casing is produced, the outer diameter is usually 114.3 mm to 508 mm.
Oil casing types and packaging according to SY/T6194-96 "oil casing" divided into short thread casing and its collar and long thread casing and its collar two kinds.