The Technological of Steel Pipe

August 23, 2022

How do oil casings go into the oil wellhead ?

Casing is nested layer by layer, the outermost layer under the deepest and shallowest coarsest, and then step by step deeper, thinner, the above figure is erased the key data of the well depth structure diagram, you can see, the first four openings are casing back to the wellhead, so […]
August 24, 2022

Theoretical weight calculation formula of various steels

  Angle steel: weight per meter=0.00785*(side width+side width-side thickness)*side thickness  Round steel: weight per meter=0.00617*diameter*diameter (rebar and round steel are the same) Flat steel: weight per meter=0.00785* Thickness * side width  Pipe: weight per meter = 0.0246615 * wall thickness * (outer diameter – wall thickness) plate: weight per meter […]
August 26, 2022

Inspection technology of petroleum steel pipe threads (OCTG Pipe)

Abstract: The oil pipe thread is a dedicated thread, which requires good air tightness. In order to effectively ensure the quality of thread inspection, it is necessary to choose a reasonable inspection technology, and it is very important to be familiar with the relevant geometric accuracy requirements of the thread […]
September 20, 2022

Steel pipe welding processes A brief analysis of the technical characteristics 

The welding steel pipe process is through heating, pressurization, or both, with or without welding consumables, so that the two workpieces produce atoms diffusion between each other, forming a metallurgical combination of processing technology and connection. Welded steel pipes are widely used in both metallic and non-metallic applications. Let’s take […]
October 13, 2022

What is the material of N80 in the N80 oil casing

N80 oil casing and N80 seamless steel pipe are important equipment for oil drilling, and its main equipment also includes drill pipe, core pipe and casing, drilling collar and small diameter drilling steel pipe. There are three lengths specified in the API standard for N80 oil casing and N80 seamless […]