1. Casing PipeDuring oil extraction, different types of well casings are used. The purpose of surface casing, for example, is to protect fresh water zone and shallow gas zone from oil or gas contamination. Another noteworthy device is the casing hanger, which is installed in the well head and hangs the casing.
    1. Oil Pipe/TubingIt provides the passage through which the oil flows out of the underground formations and up to the well surface. Threads are cut onto both ends of the pipe, allowing for easier connection to the pipe joint. Thread precision has strict standards to meet so as to ensure a tight seal at the joint.
    1. OCTG Pup JointAccording to the way the joint is connected to the casing string. The threaded version is further classified into two types. One comes with male threads at both ends, and the other type comes with male and female threads at each end, respectively. According to the usage, the joint also can be divided into two categories, production tubing joint and pipe casing joint.
    1. OCTG Couplings for Casing & TubingThe OCTG coupling is a short length of pipe used to connect two joints of casings or production tubings. Unlike ordinary couplings, it effectively solves the problem of fatigue fracture that is easily caused by the stress concentration. The coupling is normally made of the same grade of steel as the casing or tubing.
    1. API Thread ProtectorsAs an indispensable item generally used in combination with other oil country tubular products, the thread protector serves to ward off the impact during pipe loading and unloading as well as any potential damage during pipe transportation. The polyethylene used for protector-making serves as the aggregate, which combines with the steel matrix ...

Oil Country Tubular Goods (OCTG)

Oil country tubular goods (OCTG) refer to pipes and tubes used in petroleum and natural gas industries. Most of them are seamless types, but there is a considerable portion of welded versions.

OCTG can be divided into three types: pipe casings, pipe casings and drill pipes. Each type can be specified as API-5CT.

The pipe casing mainly serves as a support to ensure a proper functioning of the wellbore during drilling and completion operations.

Oil pipes, or production tubing, are used in a wellbore, through which the oil and gas travel from the bottom of the well to the land surface.

The drill pipe is usually placed between the motor and drill bit in a drill rig. It assists in the wellbore drilling process.

Related Names
Offshore Drilling Pipe | Metal Tubing Supply | Oil Line Pipe