高气油比油层测井挖掘效应定量计算及应用
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摘要
伊拉克H油田KB复杂碳酸盐岩高气油比油层呈现出明显的测井挖掘效应特征,即密度与中子孔隙度曲线具有明显的重叠区域。通过理论分析和推导,提出了一种定量表征挖掘效应的方法——φ_(Exca)参数法。测井响应和测试资料综合分析表明,气油比越高,φ_(Exca)越大。该方法能有效预测高气油比储层的纵向和平面分布规律,为优化部署井位、制定完井方案、优化射孔及生产措施等提供参考依据。
The obvious characteristics of the excavation effect on the well logging curves are shown for KB complex carbonate oil reservoirs with high GOR in Iraq H Oilfield i.e.there are obvious overlap regions in the density and neutron porosity logs.Through the theoretical analyses and formula derivation,EXCA parameter(Exca) method that quantitatively characterizes the effect is presented.The comprehensive analysis of the well logging response and test data shows that the higher the GOR is,the bigger the parameter will be.This method can effectively predict the vertical and lateral distribution characteristics of the high-GOR oil reservoirs,and moreover provide the references and evidences for the optimization of the new well arrangement,completion programming,perforation choosing,production stimulating measurements and so on.
The obvious characteristics of the excavation effect on the well logging curves are shown for KB complex carbonate oil reservoirs with high GOR in Iraq H Oilfield i.e.there are obvious overlap regions in the density and neutron porosity logs.Through the theoretical analyses and formula derivation,EXCA parameter(Exca) method that quantitatively characterizes the effect is presented.The comprehensive analysis of the well logging response and test data shows that the higher the GOR is,the bigger the parameter will be.This method can effectively predict the vertical and lateral distribution characteristics of the high-GOR oil reservoirs,and moreover provide the references and evidences for the optimization of the new well arrangement,completion programming,perforation choosing,production stimulating measurements and so on.
引文
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[2]于振锋,程日辉,赵小青,等.砂岩补偿中子-补偿密度响应与孔隙类型研究:以海拉尔盆地乌南凹陷下白垩统砂岩为例[J].中国矿业大学学报,2012,41(4):432-441.
[3]王群,庞彦明,郭洪岩,等.矿场地球物理测井[M].北京:石油工业出版社,2002:153-160.
[4]李贵杰,张建民,岳爱忠,等.砂泥岩地层中气体对补偿中子测井的影响[J].测井技术,2005,29(6):515-527.
[5]夏凌志,张建民,杨志高,等.蒙特卡罗方法在补偿中子测井仪器设计中的应用[J].测井技术,2003,27(6):477-480.
[6]安丰全,唐炼.补偿密度测井高分辨率处理技术研究[J].测井技术,1997,21(5):323-326.
[7]李方明,田中元,蒋阿明.利用LWD测井资料预测油藏衰竭程度和生产气油比[J].石油勘探与开发,2009,36(5):617-622.
[8]毛志强,谭延栋.密度测井和中子测井的相关性及其在识别天然气层中的应用[J].地球物理学报,1996,39(1):125-133.
[9]闫伟林,郑建东,张朴旺.塔木察格盆地复杂岩性储层流体识别[J].大庆石油地质与开发,2012,31(1):158-162.