大北-克深地区窄窗口异常压力随钻预监测技术研究

Study on Monitoring Abnormal Pressure in Narrow Window While Drilling in Dabei-Keshen Area

从现有的地层压力预测方法出发，介绍了窄窗口钻井的相关概念和大北-克深地区的异常高压的分布特征及成因，系统分析了国内外解决异常压力问题的主要预监测方法，并对不同压力成因的随钻压力预测方法做了归类划分。针对大北-克深地区的异常高压分布特征和成因，提出了基于多参数、定层位的随钻压力监测模型，并统计了该方法在多口井的实验结果，为其他窄窗口超高压监测提供了实用参考。

This paper introduced the related concepts of narrow window drilling and the distribution characteristics and causes of abnormal high pressure in Dabei-Keshen area based on current stratigraphic pressure prediction method, and systematically analyzed the main prediction methods of abnormal pressure at home and abroad, and it also classified the pressure prediction methods while drilling. A pressure monitoring while drilling model is developed based on multi-parameters and fixed horizons according to the characteristics and causes of anomalous high pressure distribution in Dabei-Keshen area. The research provides a practical reference for other ultra-high pressure monitoring in narrow windows.