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安全鎖接头的特点是较一般接头或锁接头易于擰卸,在提取或起拔井內事故鑽具时,使用安全锁接头能避免鑽具自其他各連接处擰脱,从而可順利的將安全锁接头以上部分的鑽桿一次取出,这样既克服了提取或起拔事故鑽具的困难,且节省了处理时间和反絲扣鑽桿。安全锁接头的材質宜选用CT45号钢制造,其構造与普通鎖接頭有所不同。是由12公厘1扣的方形右旋螺絲和螺絲帽連接而成(如图示),其結合公差較大,約为0.5公厘,这样稍施加扭力即可擰下。公、
The safety lock joint is characterized by being easier to unscrew than the general joint or the lock joint. When the accident drill tool is extracted or lifted, the safety lock joint can be used to prevent the drill tool from being unscrewed from other joints, so that the safety can be smoothly maintained. The drill pipe of the upper part of the lock joint is taken out at one time, which not only overcomes the difficulty of extracting or pulling out the accident drill tool, but also saves processing time and anti-thread drill pipe. The material of the safety lock joint should be made of CT45 steel, and its structure is different from ordinary lock joints. It is made of a 12mm 1 button square right-handed screw and screw cap (as shown in the figure). Its tolerance is relatively large, about 0.5mm, so that it can be unscrewed by applying a little torque. public,