垂直地震测井(VSP)技术在薄层砂体识别中的应用
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摘要
VSP技术与常规地震观测方法相比,可减少噪声影响,提高纵向分辨率等诸多优势。通过VSP成像,结合地面三维地震资料和岩性资料,进行精细地震属性分析,准确标定目的层,确定岩层之间的接触关系,建立准确的地质模型,进而对地层的非均质性进行研究。该文以松辽盆地南部南山湾地区为例,利用VSP资料,重新标定葡萄花油层的薄砂体,精细解释油层底界,在多种地震属性分析的基础上进行储层预测,绘制出沉积相图,对该区提出了有利勘探目标。
Compared with general seismic techniques,VSP can remove noise effect more effectively and improve vertical resolution.Combining 3D seismic profile and core,the key layers are calibrated,their relations can be made definitely,and fine seismic attributes analyses is processed.Amore accurate geological model is set up and the reservoir heterogeneous can be made clearly by using VSP image.Taking Nanshanwan area for example,the thin sand of Putaohua oil layer can be recalibrated using VSP time-depth table,and its bottom can be interpreted accurately.The reservoir is predicted by several attributes analyses,and sedimentary facial map is established to put forward favorable exploration targets.
Compared with general seismic techniques,VSP can remove noise effect more effectively and improve vertical resolution.Combining 3D seismic profile and core,the key layers are calibrated,their relations can be made definitely,and fine seismic attributes analyses is processed.Amore accurate geological model is set up and the reservoir heterogeneous can be made clearly by using VSP image.Taking Nanshanwan area for example,the thin sand of Putaohua oil layer can be recalibrated using VSP time-depth table,and its bottom can be interpreted accurately.The reservoir is predicted by several attributes analyses,and sedimentary facial map is established to put forward favorable exploration targets.
引文
[1]王永春,康伟力,毛超林.吉林探区油气勘探理论与实践[M].北京:石油工业出版社,2007.
[2]宋立忠,李本才,王芳.松辽盆地南部扶余油层低渗透油藏形成机制[J].岩性油气藏,2007,19(2):57-61.
[3]朱光明.垂直地震剖面方法[M].北京:石油工业出版社,1988:1-5.
[4]李庆忠.岩性油气藏地震勘探若干问题的讨论(Ⅱ)——关于垂向分辨率的认识[J].岩性油气藏,2008,20(3):1-5.
[5]唐振兴,杨光,黄铭志,等.海坨子—大布苏地区青三段砂体沉积机制与岩性油藏[J].岩性油气藏,2007,19(2):50-52.
[6]曹辉.关于地震属性应用的几点认识[J].勘探地球物理进展,2002,25(5):18-22.
[7]王建功,王天琦,卫平生.大型坳陷湖盆浅水三角洲沉积模式[J].岩性油气藏,2007,19(2):28-35.
[8]陈树民,于晶.松辽盆地北部储层预测技术发展及岩性油藏地震识别技术[J].大庆石油地质与开发,2004,23(5):104-106.
[2]宋立忠,李本才,王芳.松辽盆地南部扶余油层低渗透油藏形成机制[J].岩性油气藏,2007,19(2):57-61.
[3]朱光明.垂直地震剖面方法[M].北京:石油工业出版社,1988:1-5.
[4]李庆忠.岩性油气藏地震勘探若干问题的讨论(Ⅱ)——关于垂向分辨率的认识[J].岩性油气藏,2008,20(3):1-5.
[5]唐振兴,杨光,黄铭志,等.海坨子—大布苏地区青三段砂体沉积机制与岩性油藏[J].岩性油气藏,2007,19(2):50-52.
[6]曹辉.关于地震属性应用的几点认识[J].勘探地球物理进展,2002,25(5):18-22.
[7]王建功,王天琦,卫平生.大型坳陷湖盆浅水三角洲沉积模式[J].岩性油气藏,2007,19(2):28-35.
[8]陈树民,于晶.松辽盆地北部储层预测技术发展及岩性油藏地震识别技术[J].大庆石油地质与开发,2004,23(5):104-106.
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