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提高采收率,少井高产是苏5区块高效开发的必然选择,需要大量实施水平钻井。目前该区地震技术主要用于地质靶点优选,较少涉及水平井轨迹设计、地质导向和随钻跟踪等多个环节。地震数据具有较高的横向分辨率,能够对随钻地层岩性和储层进行精确预测。通过对精细的构造解释,可为水平井地质导向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优化设计。地震伽玛预测和孔隙度预测可以分别指导水平井钻钻遇更多的目标岩性和优质储层,为水平井地质导向提供更加可靠的指导。实钻情况表明,充分利用地震技术,可以提高水平井地质导向的成功率和储层钻遇率。
Improve oil recovery, less well high yield is the inevitable choice for efficient development of the Soviet Union 5 blocks, the need for a large number of horizontal drilling. At present, the seismic technology in the area is mainly used for the optimization of geological targets, but less involved in the design of horizontal well trajectories, geological guidance and tracking while drilling. Seismic data have high lateral resolution, enabling accurate prediction of lithology and reservoir formation while drilling. By interpreting the fine structure, it is possible to provide accurate formation depth and dip data for horizontal well geosteering. Precise reservoir prediction can provide reliable target for geological target optimization. Three-dimensional seismic horizon and reservoir space carving are beneficial to the optimization design of horizontal well trajectory. Earthquake gamma prediction and prediction of porosity can guide horizontal well drilling to meet more target lithology and high-quality reservoirs, respectively, providing more reliable guidance for horizontal well geosteering. The actual drilling shows that making full use of seismic technology can improve the success rate of geological guidance and the rate of reservoir drilling in horizontal wells.