温压条件下孔洞储层的地震波响应特征  

Response of seismic wave feature to pore and cave reservoir in conditions of temperature and pressure.

作　　者：李琼[1,2,3] 何建军[1,2] 贺振华[1,2] 黄德济[2] 曹均[1] 

机构地区：[1]成都理工大学“地球探测与信息技术”教育部重点实验室,四川成都610059 [2]成都理工大学“油气藏地质及开发工程”国家重点实验室,四川成都610059 [3]四川省成都市成都理工大学信息工程学院,610059

出　　处：《石油地球物理勘探》2009年第1期53-57,130+4,共5页Oil Geophysical Prospecting

基　　金：国家自然科学基金(408740531D0409);成都理工大学地球探测与信息技术教育部重点实验室开放基金(编号2008DTKF002);成都理工大学油气藏地质及开发工程国家重点实验室开放基金(批准号PLC200509)联合资助

摘　　要：针对储层(特别是碳酸岩储层)中大量发育的孔洞,提出了孔洞储层研究的物理模型模拟方法。在温压条件下测试了孔洞模型的地震波特征响应,分析了孔洞储层特征的变化对地震波属性参数的影响。测试结果表明:孔洞密度、围压、温度和含流体的变化对地震波的速度、振幅、衰减、主频和主振幅等属性参数影响较大;温压等条件的不同,孔洞密度引起的地震波特征响应程度不同;孔洞密度的变化对地震波动力学特征参数(振幅、衰减等)的影响远远大于对运动学特征(速度等)的影响。这为利用地震波的振幅、衰减等属性参数进行储层中孔洞分布和发育程度的检测提供了可靠的实验依据。In face of a great deal of developing pore and cave in reservoir (especially in carbonate reservoir), the paper presented simulation method of physical model for studying pore and cave reservoir. The feature of seismic wave for pore and cave reservoir was tested in conditions of temperature and pressure, analyzed the influence of feature variation of pore and cave reservoir on parameters of seismic wave attributes. The tested results showed that the variation of density of pore and cave, confining pressure, temperature and fluid content has larger impact on such attribute parameters as velocity, amplitude, attenuation, dominant frequency and amplitude of seismic waves; the response of seismic wave feature arisen from density of pore and cave is different when the conditions of temperature and pressure are different; the influence of variation of pore and cave on dynamic feature of seismic waves (amplitude and attenuation etc) is far greater than that on kinematical feature (velocity etc), which provides reliable experimental foundation for using such attribute parameters as amplitude and attenuation of seismic waves to carry out detection of developing situation and distribution of pore and cave in reservoir.

关 键 词：孔洞储层 物理模型 地震物理模拟 孔洞密度 

分 类 号：TE39[石油与天然气工程—油气田开发工程] P315.7[天文地球—地震学]