测井界面参数井约束反演及其应用

Well Constrained Inversion Based on "Well-Logging Interface Parameter" and Its Application

引入“测井界面参数”的概念,从声波、自然伽马、电阻率等测井曲线提取“测井界面参数”,并在一定条件下类比作反射系数;结合地震道剖面,采用宽带约束反演进行测井参数反演,得到相应声波、自然伽马、电阻率等测井曲线剖面.在得到各测井参数场的横向、纵向展布的基础上,综合解释各剖面,实现油气储层的横向预测及其精细描述,扩大了测井测量的作用范围.在中国塔里木盆地进行实际资料处理,结合地质模型进行综合解释应用,得出的结论与实际地质结论基本吻合,证明了该方法的有效性.

Well-logging interface parameter（WLIP） is derived from well-logging curve such as acoustic velocity（AC）, natural gamma ray（GR）, resistivity （RT） and WLIPs are processed as reflective coefficient. AC, GR, RT sections can be derived from deconvolution with WLIPs and seismic section. It improves the role of well-logging data in reservoir description by AC, GR, RT parameter fields. Application result in oil and gas formation is well matched with geology fact in Tarim basin.