Petroleum steel pipe plays an important role in petroleum industry, not only for its huge output, but also for its quality and performance. Petroleum steel pipe mainly includes oil well pipe (drill pipe, drill collar, casing, tubing, etc.) and oil and gas transmission pipe.
Oil field steel pipe mainly includes casing, tubing and drill pipe. Petroleum steel pipe thread professional grease is a kind of grease which is coated on the thread surface before the connection of petroleum steel pipe. API divides it into thread grease and storage grease.
This paper introduces the heat-resistant stainless seamless steel pipe. When there is more heat in the inner tube body,
It is urgent to use high-strength corrosion-resistant oil pipe material under harsh bottom hole temperature, pressure and corrosion conditions.
There are 11 steps in the production process of hot-rolled seamless steel pipe, which are preparing the pipe blank, heating the pipe blank, piercing, rolling the pipe, reheating, reducing the diameter, conducting heat treatment, straightening the finished pipe, further finishing, and inspecting the seamless steel pipe.
Firstly, the working environment is in the ocean, not only the working space is seriously limited, but also the complex and changeable sea conditions will bring great challenges to the normal construction.
Subsea pipe is a pipeline laid on the seabed to continuously transport oil, gas and water. Make a metaphor: offshore oil and gas facilities are all valuable "points".
The blank of welded steel pipe is steel plate or strip steel. Due to different welding processes, it can be divided into steel pipe for furnace machinery (welded pipe), electric welding (resistance welding) pipe and steel pipe for automatic arc machinery (welded pipe).
Corrosion of stainless steel is a very complex electrochemical process, especially in the sea water environment by biological, physical, chemical and other factors. There are many anti-corrosion technologies for stainless steel.
The corrosion resistance of stainless steel mainly depends on the isolation of passive film. The passivation film on the surface of stainless steel consists of two parts, the inner layer is mainly composed of chromium oxide, which has strong blocking effect on corrosive ions, while the outer layer is mainly composed of iron oxide and hydroxide.