地震波形指示反演技术在薄储层预测中的应用——以准噶尔盆地B地区薄层砂岩气藏为例

薄储层预测精度是目前制约油气勘探开发的热点问题。要实现薄层精确预测，关键在于如何井震结合、拓宽频带，获得合理的高频成分。传统的反演技术主要通过确定性或随机性模拟建立宽频模型，其高频成分主要来自于井，没有体现地震的横向约束，提高垂向分辨率的同时，降低了储层横向识别能力。地震波形指示反演技术充分利用地震波形的横向变化信息，代替传统变差函数进行高频成分的模拟，对井的分布要求低，比传统随机反演方法确定性更强。而且高频结构受波形变化控制，更好地体现了沉积环境的约束。在提高垂向分辨率的同时，横向预测性得到有效保证。利用地震波形指示反演技术在准噶尔盆地B地区薄层砂岩气藏中进行储层预测，取得了较好的效果，为钻探目标的评价_开发阶段提供了可靠的资料基础。

Application of seismic motion inversion technology in thin reservoir prediction:#br# A case study of the thin sandstone gas reservoir in the B area of Junggar Basin

The accuracy of thin reservoir prediction is a hot debate in the oil and gas exploration and development.The key lies in how to combine well,broaden the band and get reasonable high frequency components in order to achieve a thin layer and accurate prediction.The traditional inversion technique is mainly through the deterministic or stochastic simulation and it sets up a broadband model.The high frequency component mainly comes from the well,which did not reflect the lateral constraint of the seismic.Seismic modeling inversion instead of traditional variation function,simulates the high frequency components,makes full use of the change of lateral seismic waveform information.It’s stronger than the traditional methods in certainty,and has lower requirements of well distribution.It has good application in thin sandstone gas reservoir prediction in the Junggar Basin B area,providing a reliable data basis for the evaluation and development phase.