Black Oil Pipe Delivery – Royal Group

Structure

PI: It is the abbreviation of American Petroleum Institute in English, and it means American Petroleum Institute in Chinese.

OCTG: It is the abbreviation of Oil Country Tubular Goods in English, and it means oil special pipe in Chinese, including finished oil casing, drill pipe, drill collar, coupling, short connection, etc.

Tubing: Pipes used in oil wells for oil recovery, gas recovery, water injection and acid fracturing.

Casing: A pipe that is run from the surface into a drilled wellbore as a lining to prevent the wall from collapsing.

Drillpipe: The pipe used to drill a wellbore.

Line pipe: a pipe used to transport oil and gas.

Coupling: A cylindrical body used to connect two threaded pipes with internal threads.

Coupling material: the pipe used to make the coupling.

API thread: pipe thread specified in API 5B standard, including oil pipe round thread, casing short round thread, casing long round thread, casing partial trapezoidal thread, pipeline pipe thread, etc.

Special buckle: Non-API threaded buckle with special sealing performance, connection performance and other properties.

Failure: The phenomenon of deformation, fracture, surface damage and loss of original function under specific service conditions. The main forms of oil casing failure are: collapse, slippage, rupture, leakage, corrosion, adhesion, wear and so on.