地震资料在水平井部署及轨迹优化中的应用研究

The research about application of seismic data in horizontal wells deployment and trajectory optimization

地震资料具有较高的横向分辨率,通过精细的构造解释,对地层岩性和储层进行精确预测,可以为水平井的初步部署提供精确的地层深度及倾角数据,储层精细预测可为地质靶点优选提供可靠目标,三维地震层位和储层空间雕刻有利于水平井轨迹的设计。在水平井钻进过程中,将地震解释成果、反演数据体、三维建模成果及井地质录井、测井信息和LWD随钻数据集成在一起,协同研究,在钻井过程中实时开展井震对比综合研究,能够准确、快速、有效地对水平井钻探进行实时导向,优化轨迹。实钻情况表明,充分利用地震资料,可以有效提高水平井地质导向的成功率和储层钻遇率。

Seismic data has high lateral resolution,it can predict lithology and reseavior accurately and provide precise formation depth and inclination data for initial deployment of horizontal wells through fine structural interpretation. Accurate prediction of reservoir can provide a reliable geological target. Three- dimensional seismic horizons and carving of reservoir space is conducive to design horizontal well trajectory. In drilling process of horizontal well,it can orient drilling horizontal wells and optimize trajectory in real- time accurately,quickly and effectively through conducting collaborative research among seismic interpretation,inversion data volume,three- dimensional geological modeling,logging,and LWD information and real- time comparative comprehensive research between logging and seismic. Actual drilling showed that full use of seismic data can improve success rate of geosteering of horizontal wells and reservoir drilling effectively.