C区块水平井建模技术研究

Research on C Block Horizontal Well Modeling Technology

C区块属于油田三类区块,窄小河道砂体发育为主。针对开发区块目的层砂体规模小、不稳定、相变快的特征,采用井震结合构造建模技术,精细描述水平井区构造特征,及微幅度起伏变化,并根据测井砂岩解释数据及地震属性进行协同模拟,建立砂岩预测模型,精细描述区块内目的层砂体的展布特征,运用新加密井资料进行多次模型校正,提高建模精度。设计时进行轨迹优化和钻井时随钻跟踪调整轨迹。实际应用表明,采用上述方法可以提高水平井砂岩钻遇率。

Block C belongs to the third type of block in the oil field, with the development of narrow channel sand bodies. According to the features of small, unstable and rapid phase change of the sand body in the target zone of the development block, the structural characteristics of the horizontal well zone and the variation of the micro amplitude are described in detail by using the well- seismic combined structural modeling technology.Based on the interpreted data of the well logging sandstone, And seismic attributes to simulate and establish the sandstone prediction model to describe the distribution characteristics of the target sand bodies in the blocks in detail and to correct multiple models by using the new well data to improve the modeling accuracy.Design trajectory optimization and drilling while drilling tracking adjustment trajectory.The practical application shows that the above method can improve the drilling rate of horizontal well sandstone.