东营凹陷北带砂砾岩体天然气测井评价方法

The Evaluation Tcehnique of the Gas Reservoir of Glutenite Reservoir in North Region of Dongying

东营凹陷北带沙四段是一套由近岸水下扇沉积形成的具有低孔隙度、低渗透率、双孔介质等特点的砂砾岩体储层,储层的非均质性极强、孔隙结构异常复杂,岩性识别及储层划分难度大。针对该区深层气的特点,充分利用常规电阻率-孔隙度测井和微电阻率成像测井资料,依据取心资料刻度微电阻率成像测井资料,在识别岩性、储层划分及分类的基础上,对砂砾岩体气层的测井响应进行研究,总结了该区深层天然气的测井评价方法及判别函数,并在新井和老井精细评价中取得满意效果。

ES4 interval in north Dongying Sag is a glutenite reservoir formed by offshore subsea fan deposit and characterized by low porosity,low permeability and double porosity media.Since its very bad heterogeneity and complicated pore structure,it is difficult to identify lithology and delimit reservoir.Aimed at features of the deep-seated gas reservoir,fully applied data of conventional resistivity-porosity loggings and supplemented with micro resistivity imaging logging that had calibrated by core data,based on...