CAJ | 학술논문

在定向井和水平井钻桥塞时，为了减少磨损，可以采用井下动力钻具滑动钻进，钻头加压技术成了关键。应用钻柱拉力扭矩模型向司钻提供了包含桥塞深度、不同摩擦因数下的下钻到底时的大钩负荷和加不同钻压时的大钩负荷的钻压控制参考表。司钻根据下钻到底时的大钩负荷从表中找到所加钻压对应的大钩负荷，然后下放钻具，让大钩负荷与设计值一致，加上钻压。现场4口井钻桥塞过程中，没有观察到明显的托压现象。
재정향정화수평정찬교새시，위료감소마손，가이채용정하동력찬구활동찬진，찬두가압기술성료관건。응용찬주랍력뉴구모형향사찬제공료포함교새심도、불동마찰인수하적하찬도저시적대구부하화가불동찬압시적대구부하적찬압공제삼고표。사찬근거하찬도저시적대구부하종표중조도소가찬압대응적대구부하，연후하방찬구，양대구부하여설계치일치，가상찬압。현장4구정찬교새과정중，몰유관찰도명현적탁압현상。
While drilling out bridge plugs in directional wells or horizontal wells, the downhole motor can be used for slide drilling in order to reduce wear and tear; in this case, technique of putting press on drilling bit becomes a critical factor. A drill string pull-torque model was used to provide the driller with a reference table containing bridge plug depth, hook load under different friction coefifcients when drilling to the bottom and press control of hook load when adding different presses on bit. The driller will ifnd the corresponding press of hook load from the table when drilling to the bottom, then lower the drilling tools, keeping the hook load consistent with the designed value, and then put on press on bit. Drilling out the plugs in four wells on site, no evident backing pressure was observed.