摘要
渤南油田沙三、沙四段低孔渗砂岩储层埋藏深、成岩作用强、岩性变化频繁、孔隙结构复杂,导致油气层与水层的测井响应特征差异小,流体识别具有较强的模糊性。针对上述特点,应用自然伽马、孔隙结构特征等多参数分析方法,在同一油层内部根据岩性、物性等变化,对油气层进行层内模式细分,把油、气层划分为Ⅰ、Ⅱ、Ⅲ类层,从而提高测井资料评价成功率,实现渤南油田沙三、沙四段低孔渗砂岩储层精细评价。
The sandstone reservoirs of Es3 and Es4 section in Bonan oilfield have characteristics of low porosity and permeability,deep buria,strong diagenesis,frequent lithological change and complex pore structure,resulting in small difference between hydrocarbon zone and water zone which makes fluid identification ambiguous.The application of natural gamma and pore structure feature multiparameter analysis subdivides a hydrocarbon zone into three kinds of layers.It improves the success rate of evaluation with logging data and realizes fine evaluation of the sandstone reservoir with low porosity and permeability in Es3 and Es4 section of Bonan oilfield.
出处
《国外测井技术》
2012年第2期50-52,4,共3页
World Well Logging Technology
关键词
多参数分析法
储层质量划分
层内模式细分
储层岩性识别
测井评价
multiparameter analysis method
reservoir quality division
internal layer subdivision
reservoir lithology identification
well logging evaluation
