1. Explanation of terms related to oil pipelines
API: American Petroleum Institute, American Petroleum Institute.
OCTG: English is short for Oil Country tube Goods, Chinese is special oil pipe meaning, including product
Casing,
DRILL PIPE, drill collar, coupling, short joint, etc.
TUBING:
Tubing used for oil production, gas production, water injection and acid pressure in oil Wells.
CASING: Pipe lowered from the surface into a borehole to serve as a lining to prevent the wall from collapsing.
Drill pipe: Pipe used to drill holes.
Pipeline: A pipeline used to transport oil and natural gas.
Couplings: Used to connect two cylinders with threaded pipes and internal threads.
Joint material: Pipe used to make joint.
API thread: Pipe thread specified in API 5B standard, including tubing round thread, casing short round thread, casing long round thread, casing eccentric trapezoid thread, pipe thread, etc.
Special thread: Non-API thread type with special sealing properties, connection properties, etc.
Failure: Deformation, fracture, surface damage and loss of original function under specific service conditions. The main forms of casing failure include collapse, slip, fracture, leakage, corrosion, adhesion, wear and so on.
2. Petroleum related standards
API 5CT: Casing Specification (latest version is Version 8)
API 5D: Drill pipe Specification (latest edition: 5th edition)
API 5L: Specification for pipe steel tube (latest version 44)
API 5B: Specification for machining, measuring, and inspecting casing, tubing, and pipe threads
GB/T 9711.1-1997: Oil and Gas industry. Steel pipe for transmission. Technical delivery conditions. Part 1: Class A steel pipe
GB/T9711.2-1999: Oil and gas industry. Steel pipe for transmission. Technical delivery conditions. Part 2: Class B steel pipe
GB/T9711.3-2005: Oil and Gas industry. Steel pipe for transmission. Technical delivery conditions. Part 3: Class C steel pipe
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