一种识别薄岩性气藏的地震反射特征分析  

Analysis of seismic reflection characteristics for identifying thin rock gas reservoirs

作　　者：唐廷明 Tang Tingming(PetroChina Xinjiang Oilfield Company,Xinjiang Karamay 834000)

机构地区：[1]中国石油新疆油田分公司,新疆克拉玛依834000

出　　处：《云南化工》2020年第11期93-95,共3页Yunnan Chemical Technology

摘　　要：地震资料由于自身纵向分辨率的限制难以识别薄砂体,但是薄气层在地震剖面上却是有着标志性的地震异常反射特征。通过研究和总结发现薄岩性气藏在地震剖面呈现强反射加一强一弱低频阴影的地震反射特征,而且薄岩性气藏所在位置位于强反射的底。为验证该结论的正确性,通过模型正演分析发现该反射特征可快速找到薄岩性气藏并确定其位置。实际工区的地震资料与出气井的标定结果也显示该反射特征是在叠后地震剖面识别薄岩性气藏的一种有效方式。due to the limitation of vertical resolution of seismic data,it is difficult to identify thin sand bodies.However,thin gas reservoirs have the characteristic of seismic abnormal reflection on the seismic section.Through research and summary,it is found that the seismic reflection characteristics of thin rock gas reservoir are strong reflection plus strong weak low frequency shadow,and the location of thin rock gas reservoir is located at the bottom of strong reflection Through the forward modeling analysis,it is found that the reflection feature can quickly find the thin rock gas reservoir and determine its location.The seismic data of the actual work area and the calibration results of gas wells also show that the reflection feature is an effective way to identify the thin rock gas reservoir in the post stack seismic section.

关 键 词：薄气层 薄岩性气藏 强反射 低频阴影 

分 类 号：P631.44[天文地球—地质矿产勘探]