利用模型正演进行草湖凹陷东河砂岩尖灭线识别与预测

在草湖凹陷东河砂岩尖灭线实际解释中,可能因地震资料的假象或陷阱而造成解释或预测结果的错误.针对地下东河砂岩复杂的尖灭地质现象,通过模拟东河砂岩厚度变化所造成的地震响应特征,并结合常规解释的成果,开展了东河砂岩地质建模与正演.建立了多个超覆尖灭的地质模型,进行正演模拟,精确预测尖灭点的位置,引导正确的解释方向.

Recognize and Predict the Pinch-out Boundary of Donghe Sandstone in Caohu Depression by Applying Model Forwarding

In fact,it's possible to result in the mistakes for the false or trap of seismic dada. Aiming at the complex pinch-out phenomenon of underground Donghe sandstone, through simulating seismic response character affected by the thicken of Donghe sandstone layer,combined with the common explanation, we build multi-pinch-out geological model,predict exactly the location of pinch-out point, and guide correct direction of seismic explanation.