China Drill Pipes suppliers China Drill Pipes suppliers

China Drill Pipes suppliers A advanced strict quality management system had been established in our company. Our products has passed the ISO9001:2015 certificate. To strong our competition, our team, which full of exploration capabilities, releases some new product every year. It is necessary to pay attention to the corrosion of drill pipe when working in the acid and alkali area. Upon completion of drilling, the rod body surface should be cleaned promptly with clean water to remove the corrosion layer. Drill pipe should be stored in dry place, the bottom should be multi-point support, long-term storage should be regular maintenance of drill pipe. The drill pipe shall not be used as a heavy tail-piled support platform, and shall not be placed under rubble, coal piles or piled up in random places. After the drill pipe is cleaned with rust/dust, the protective cap or packing seal shall be fastened to ensure that the drill pipe is always fresh. The failure of the bottom hole assembly is mainly manifested as the fatigue of the threaded joints, of which the fatigue failure of the external threaded joints accounts for the majority, about ho, and the number of bottom hole tools occupies a small proportion in the entire drilling, so the failure probability of the bottom hole Much higher than the drill pipe. It can be seen that the threaded joint of the bottom hole assembly is the weakest part of the drill string in deep and ultra-deep wells, and the external threaded joint is the most dangerous. Improve the quality of the drill string and extend the service life of the drill string. 1 Improve the toughness of the drill tool material. The high toughness material has high resistance to crack propagation and allows longer cracks before the drill tool breaks. Therefore, increasing the toughness of the material can not only prevent it The brittle fracture of the drilling tool is more important to extend the service life of the drilling tool. In order to avoid brittle fracture accidents of drilling tools, the cold brittle transition temperature (FATh) of the material should be lower than the surface temperature of the drilling site. AP has listed the toughness index of drill string 54) Charpy impact energy (34 size specimen) in the third edition of AP CSD (1992). It should be pointed out that 54) is the most basic requirement for the toughness of drilling tool materials. In fact, the minimum toughness requirement of a drilling tool must not only match its strength, but also be related to its service environment. For ultra-deep wells. Extended reach wells, cold areas, and corrosive environments may require higher toughness. For example, the Canadian Shell company puts forward a minimum toughness requirement of 80) for drill pipes, as shown in Figure 1. It can be seen from this figure that the deeper and deeper, the higher the minimum toughness based on the first leak and then break criterion鈥? It is commercially feasible to put forward toughness requirements higher than 54) for drill pipes. Some factories in Japan and Europe can easily manufacture drill pipes with toughness up to ltoJ.China Drill Pipes suppliers website:http://www.jsdrilltools.com/drill-pipes/