地质导向技术在蒙平1井的应用

Application of geo-steering technique in mengping-1 well.

蒙古林砂岩油藏地层薄，水平井钻井难度大。为了保证蒙平1井最大限度在目标层中钻进，应用了水平井地质导向技术。该技术在油藏精细描述的基础上．建立构造、储层特征的地质模型，并根据邻井的测井资料，对随钻测井（LWD）曲线及可能钻遏的地层岩性进行预测。在蒙平1井钻井过程中，根据LWD测井曲线，进行实时验证构造和储层信息，不断修正地质模型，及时调整靶点，保证了水平段最大限度在2—3m厚的薄砂层中穿越，钻遇油层203．1m．钻遇率达到了66．55％，取得较好的效果。通过蒙平1井的成功钻探，证明了水平井地质导向技术是提高水平井效益的有效手段，为二连地区类似油藏提供了很好的借鉴。

Because of thin Menguling sandstone reservoirs and difficult horizontal drilling,the technology of horizontal wells geological guidances was applied to assure that well MP1 can drill in target layers to the maximum extent. The technology forecasts drilling layers by establishing construction and reservoirs geological models, analyzing adjacent wells logs and loggings while drilling based reservoirs description. It assured that well MP1 drilled in thin sandstones with 2-3 meters thick, and drilled 203.1 meters reservoirs with drilling-encounter ratio of 66.55% by validated constructions and reservoirs continually, repaired geological models, and adjusted target in process of drilling well MP1. It achieved drilling target of well MP1 and got fine effect. It's proved that the technology of horizontal wells geological guidance can improve horizontal wells benefits, and offer fine experiments to similar reservoirs of Erlian field by use of drilling well MP1.