定向钻井技术作为石油勘探和开发的一种常用的钻井技术手段已为各油田和钻探单位所掌握,并在生产中被熟练地应用。一般定向井的位移都在几百米,设计最大井斜角在20°～40°之间。这类定向井在钻井过程中井眼轨迹比较容易控制,钻井难度较小。对于定向井的两头即井斜角在40°以上的大斜度定向井和井斜 Directional drilling technology, as a commonly used drilling technique for oil exploration and development, has been mastered by oil fields and drilling units and used skillfully in production. The displacement of the general directional wells are in a few hundred meters, the maximum design of the well angle between 20 ° ~ 40 °. Such directional wells in the drilling process easier trajectory trajectory control, drilling less difficult. For the directional well, the two ends of the well are inclined at a high inclination of more than 40 ° directional wells and well inclination