摘要
近年来国内学者从数值模拟、瞬时谱的计算和实例应用等方面对"低频阴影"分析方法进行了详细地研究,但少见"低频阴影"分析方法作为主力方法进行流体识别的成功案例。以国内某区的油水储层预测为实例,分析并总结了水层、油层和含油水层的瞬时谱特征,以详实的测井数据和瞬时谱剖面论证了"低频阴影"分析方法的适用性问题和"低频阴影"的成因问题。实例研究结果表明:(1)"低频阴影"的成因非单一的"衰减"因素;(2)"低频阴影"分析方法能有效地用于油层地识别,对于水层的识别具有一定的适用性,即使对于同一个研究区的同一地层的上段与下段地层的瞬时谱特征具有较大的差异;(3)"油层"与"含油水层"具有不同的"低频阴影"特征,且两者的"低频阴影"的主要成因机制也不一样。
Chinese scholars studied the ＂low frequency shadows＂ in detail by using numerical simulation,the instantaneous spectrum calculation and the application examples over the past decade,but they rarely take the ＂low frequency shadows＂ analysis as the main research methods of fluid identification as success cases.We take the oil-water reservoir prediction as an example in Xinjiang region,which analyzed and summarized the instantaneous spectral characteristics of water layer,oil and oily water layer by using the detailed logging data and instantaneous spectrum sectional.The applicability and causes of ＂low frequency shadows＂ are demonstrated and the direction of ＂low frequency shadows＂ analysis method is discussed.The research showed that：（1）the ＂attenuation＂ factor is not the only causes of ＂low frequency shadows＂;（2）the ＂low frequency shadows＂ analysis method can be effectively used for ＂oil layer＂ identification,but it needs to consider the question of the applicability for ＂ water layer＂,even for the same formation both in the upper section and the lower section may exist different features;（3） ＂oil layer＂ and ＂oily water layer＂ have different ＂low frequency shadows＂ feature which are caused by different mechanisms.
出处
《物探化探计算技术》
CAS
CSCD
2017年第4期506-514,共9页
Computing Techniques For Geophysical and Geochemical Exploration
基金
国家科技重大专项(2016ZX05060-006)
关键词
低频阴影
谱均衡
油水识别
衰减
瞬时谱
low frequency shadows
spectral balancing
oil water identification
attenuation
instantaneous spectrum
