Geological Drilling and Petroleum Drilling Seamless Steel Tube Knowledge Collection--51 Steel Pipe Net
2021-12-27
Geological Drilling and Seamless Drilling Knowledge for Oil Drilling--51 Steel Pipe Network provides seamless drilling for geological drilling and oil drilling: In order to ascertain the underground rock structure, groundwater, oil, natural gas and mineral resources, the drilling rig is used to drill wells. Oil and gas exploitation can not be separated from drilling wells. Seamless steel pipe for oil drilling for geological drilling is the main equipment for drilling, mainly including core outer pipe, core inner pipe, casing, drill pipe and so on. Because the drilling pipe is required to work deep into the depth of a few kilometers, the working conditions are extremely complex. The drill pipe is subjected to stress such as pulling, pressing, bending, torsion, and unbalanced impact loads, and it is also subject to mud and rock wear. Therefore, the pipe is required. Must have sufficient strength, hardness, wear resistance and impact toughness, steel with steel "DZ" (Geological Pinyin initials) plus a number to represent the steel yield point, commonly used steel DZ45 45MnB, 50Mn; 40Mn2, 40Mn2Si of DZ50; 40Mn2Mo, 40MnVB of DZ55; 40MnMoB of DZ60; 27MnMoVB of DZ65. Steel pipes are delivered in a heat-treated state.
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