论文部分内容阅读
深海扇A区块的纵波阻抗对气水层的分辨能力低,利用常规叠后波阻抗难以有效预测流体展布范围,为此采用了叠前扩展弹性阻抗反演技术。扩展弹性阻抗反演技术是弹性波阻抗反演的进一步推广,其包含更丰富的岩性和流体信息,是一种有效的流体检测技术。在简介扩展弹性阻抗的概念以及反演方法原理的基础上,着重分析了研究区流体检测敏感参数,优选了流体检测的最优理论角度,最终计算生成了用于流体检测的扩展弹性阻抗曲线。对研究区实际资料进行的扩展弹性阻抗反演的实际应用效果表明,扩展弹性阻抗反演在深海扇储层的流体识别,特别是气水判别方面具有良好的效果,由此为深海扇储层的含流体性质建立了一种有效的判别方法。
The P-wave impedance of deep-sea fan A block is low in resolution of gas-water layer. It is difficult to predict the fluid distribution range effectively by conventional post-stack wave impedance. Therefore, the pre-stack extended elastic impedance inversion technique is adopted. Expanded elastic impedance inversion is a further generalization of elastic wave impedance inversion. It contains richer lithology and fluid information and is an effective fluid detection technique. Based on the introduction of the concept of extended elastic impedance and the principle of inversion method, the sensitive parameters of fluid detection in research area are analyzed emphatically. The optimal theoretical angle of fluid detection is optimized. Finally, the extended elastic impedance curve for fluid detection is generated. The practical application results of the extended elastic impedance inversion of the actual data in the study area show that the extended elastic impedance inversion has a good effect on the fluid identification of the deep-sea fan reservoir, especially on the gas and water discrimination. Therefore, Containing fluid properties to establish an effective discriminant method.