第三部分 套管头 套管头的功能是:固定钻进井的井口;连接井下的套管柱;可靠地密封井口和控制管间空间;钻井时,套管头上还可安装防喷器等设备;采油时,则可安装采油树。 通常,随着井深的增加,需要封隔井下地层的层数增多,下入井内的套管长度也相应增加。目前下入油井的套管柱多达五层,因此,套管头有单层、双层、三层、四层和五层之 The third part of the casing head casing head function is: fixed well into the wellhead; connected to the underground casing string; reliable seal wellhead and control the space between the tube; drilling, the casing head can also be installed blowout preventer Equipment; oil production, you can install the Christmas tree. Generally, as the well depth increases, the number of layers that need to be sealed off from the formation increases, and the length of the casing in the well increases accordingly. Currently under the well casing string up to five, so the casing head has a single, double, three, four and five of the