气藏精细描述技术在苏里格气田的应用

Application of precise reservoir description in the sulige gas field

由于苏里格气田储层分布的高度复杂性,目前对气层分布预测基本上以定性预测为主,还不能做到真正意义的定量预测。现有的地震预测技术在苏里格气田复杂地质背景和地球物理条件下存在多解性,其原因主要是地震资料的分辨率和保真度问题、砂岩储层与围岩波阻抗关系的不确定性和叠后反演预测方法的局限性,因此,需要用科学的思路来对目的层进行更为精细的描述及预测,对气藏产能、储能做客观实际的评价,密切指导下一步的开发。

Distributed reservoir in the gas field is the high complexity, now qualitative forecasting is the main technology to forcasting gas horizon distribution and quantitative forecasting is not. The current seismic prediction technology that is used for the xxx gas field which is a complex geological and geophysical field is multiple solutions. On the one hand, keeping high resolution and fidelity of seismic data is a question. On the other hand, the wave impedance affection between sandstone reservoir and surrounding rock is uncertain. Third, there is some limitations in the poststack inversion predetermination. Now, we should use more and more precise description and prediction technology in order to developing purpose horizion.