水平井在喇嘛甸油田厚油层剩余油挖潜中的应用

APPLICATION OF HORIZONTAL WELL IN POTENTIAL TAPPING OF REMAINING OIL IN THICK RESERVOIR OF LAMADIAN OILFIELD

水平井作为老油田调整挖潜剩余油、提高采收率以及新油田实现少井高效开发的一项重要技术，已在世界范围得到广泛应用。高含水、密井网、多层砂岩的大庆油田正逐步扩大水平井技术的应用规模。喇嘛甸油田厚油层发育，进入特高含水开发期后，剩余油主要存在于厚油层顶部，常规方法挖潜难度较大。通过对喇嘛甸油田应用水平井挖潜剩余油的可行性及潜力的分析，研究了水平井挖潜技术，结合现有的水平井开发经验，总结了水平井轨迹的优化设计、随钻跟踪调整及完井等技术方法，为进一步拓宽水平井挖潜思路，改善水平井挖潜效果奠定了基础。

Horizontal well technology has been widely applied around the world which acts as a significant technol- ogy for adjustment and potential tapping of remaining oil and enhance recovery factor in old oilfield, and achieve high effective development with less wells in new oilfield. In Daqing Oiltield with high water-cut, dense well pattern and multi-layer sandstone reservoirs, horizontal well technology application scale is being extended. Thick reservoirs develop in Lamadian Oilfield. After entering ultra-high water cut stage, remaining oil is mainly located at the top of thick reservoirs and brings much difficulty for conventional potential tapping method. Based on the analysis on feasibility and potentiality of potential tapping of horizontal well in Lamadian Oilfield, potential tapping technology of horizontal well is studied. Combining with current horizontal well development practice, optimization procedure of horizontal well track, tracing adjustment while drilling and completion techniques are summarized, providing foundation for further improving effect of potential tapping by horizontal well.