复杂超深薄互砂岩高分辨率反演预测技术及应用

The Application of Fine Resolution Inverse Technique in Description of Reservoir of Complex Ultra Deep Low Permeability Sand Shale Alternate Rock

塔河油田石炭系薄互层储层具有埋藏深(4800～5400m)、单砂体薄(3～10m)、砂体分布不稳定等特点。地震资料主频范围为35～41Hz,对应反射层砂岩的主体理论分辨率为26～30m,地震数据无法识别薄砂体。为了解决石炭系薄砂体预测难题,采用了地层序列约束随机优化高分辨率反演技术为主,其它方法为辅的储层预测方法,较好地解决了问题。该方法对当前勘探开发中面临的复杂超深低渗砂泥岩薄互层储层研究具有一定的针对性和适用性。

With the features of deep bury（4800-5400m）, thin monolayer（3-10m）, and unstable oil sand distribution in the carboniferous system reservoir of Tahe oilfield, the major frequency of seismic data is 35-41Hz, and seismic data cannot identify the thin sand body of 2-6m. To resolve the forecast and explanation of thin sand,we adopted fine resolution inverse technique of bed succession restrictive random sequence optimization approach, supplemented by other inversions. This method has definite contraposition and applicability in researching ultra deep, complex, low permeable thin sand shale alternate layer in present reservoir exploratory development.