师政;邱隆伟;田琨;杨勇强;王晔磊;畅通;

• 1:中国石油大学(华东)地球科学与技术学院

• 2:中国石化石油勘探开发研究院海外油气规划所

摘要(Abstract)：

综合野外、岩心、地震、钻、测井和分析化验资料,总结南堡凹陷下古生界碳酸盐岩表生岩溶特征,分析不同类型的岩溶识别标志,确立识别方案并进行实例应用.结果表明:南堡凹陷下古生界表生岩溶可划分为晚印支—早燕山期和喜马拉雅期;表生溶洞多呈倒置漏斗形,内部多形成岩溶塌陷体或被各种黏土充填;表生岩溶带在地震剖面上主要表现为同相轴不连续—弱振幅的杂乱反射特征;泥浆漏失段发育在距不整合面30m范围内;测井曲线上为高伽马—高声波—高井径—低密度—低电阻率—暗色成像斑块的组合特征;表生溶孔在阴极射线下显示明亮的橙色发光条带,碳、氧同位素值呈明显负向偏移的特点.以钻井响应和测井组合特征为主要识别标志,岩石学特征和地震反射标志为次要识别标志,地球化学特征为辅助识别标志,在NP280井中识别3个表生岩溶带.该方法可以有效地针对表生岩溶储层进行精细识别,为相似地区的碳酸盐岩勘探提供理论依据.

关键词(KeyWords)：南堡凹陷;表生岩溶;岩溶储层;岩溶特征;岩溶识别

Abstract:

Keywords:

基金项目(Foundation):国家油气重大专项(2011ZX05009-002);; 中央高校基本科研业务费专项资金项目(14CX06068A)

作者(Author):师政;邱隆伟;田琨;杨勇强;王晔磊;畅通;

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