摘要
火山岩是油气的高产储层，但其岩性、岩相横向变化快，非均质性强，成层性差，复杂的地质、地震条件使得寻找火山岩有效储层成为勘探难题。选取合适的叠后地震反演处理技术，能够有效地预测火山岩有效储层分布范围，从而提高解释人员对火山岩有效储层和致密层的分辨能力。实践证明，测井—地震联合密度反演是定量预测火山岩有效储层空间分布的有效手段，拟波阻抗换算法和高斯配置协模拟法相结合的密度反演有助于提高地震资料识别油气储层的精度。
There are high productivity layers of hydrocarbon in volcanic rock reservoir. However, it is difficult to discover pay zones in volcanic rock reservoir because of rapidly lateral variation of lithology and lithofacies, strong heterogeneity, poor bedded property, as well as complex geologic and seismic conditions. A suitable poststack seis- mic inversion processing technique can be used to effectively predict the distribution range of pay zones in volcanic rock reservoir, as a result, the discrimination of interpreters on pay zones and tight layers of volcanic rock reservoir can be increased greatly. Practice shows that logging-seismic combined density inversion is an effective method for quantitative prediction of space distribution of pay zones of volcanic rock reservoir. Besides, density inversion meth- od combined with pseudo-wave impedance conversion and Gaussian collocation simulation can help to increase the recognition accuracy of pay beds with seismic data.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2009年第6期304-307,共4页
Petroleum Geology & Oilfield Development in Daqing
基金
教育部重点实验室基金项目（2008DTKF010）：
关键词
徐家围子断陷
火山岩
火山岩有效储层
波阻抗反演
密度反演
Xujiaweizi Fault Depression
volcanic rock
effective reservoir
wave impedance inversion
density inversion
