趋势面分析与相干体技术在火山岩预测中的应用

Application of a method combining trend surface analysis and coherence cube technology to volcanic prediction

根据近年来的研究成果,火山岩顶面在形态上主要呈穹窿状,形成局部隆起的构造圈闭,可利用趋势面分析的方法寻找火山口隆起的分布.火山岩气藏往往是复合型气藏,它不仅受火山口的构造控制,还与有利的火山岩储层密切相关,可利用相于体切片技术来圈定有利储层的分布范围.通过这两种技术的结合,既可确定火山口的分布又可圈定有利储层的分布范围,成为近期井位部署的重要技术手段,对火山岩气藏的预测具有普遍意义.

According to research results in recent years, the top surface of volcanic rock, mainly dome-shaped in morphology, develops into structural trap in some uplifted zones. With trend surface analysis method, the distribution of uplift crater could be found. Volcanic gas reservoirs are often complex gas reservoirs, which are not only controlled by the construction of the crater, but also closely related to a favorable volcanic reservoir. Coherence cube slicing technology can be used to determine the distribution boundary of available volcanic reservoir. Through the combination of the two technologies, which can determine the distribution of craters and draws the distribution of reservoir, become an important technical means for well placement, and have universal significance on volcanic gas reservoir prediction.