【摘要】 利用基于模型正演的测井曲线重构技术,采用同位协同克里金序贯高斯模拟方法将储层物性、测井响应、地震属性间的关系相结合进行随机建模,是稀井网条件下储层属性建模的有效办法,应用此方法建立了莺歌海盆地某气田莺歌海组二段Ⅱ下气组储层孔隙度模型。结果表明:测井正演重构曲线能有效地解决浅层气藏声波曲线畸变问题,建立较好的井震关系;用井约束反演波阻抗作为第二变量进行同位协同模拟,降低了随机模拟结果的不确定性。模拟结果符合地质认识,可以定量表征气藏内部的分隔关系,与实际生产测试结果相吻合。更多还原

【Abstract】 The technique is an effective method for reservoir attribute modeling under the condition of wide spacing.The relations among reservoir physical properties,log responses,seismic attributes are integrated for stochastic modeling using log reconstruction based on forward modeling and collocated cokriging sequential Gauss stimulation technique.Using this method,the porosity model of gas reservoirs of lower II gas group in Second member of Yingge-hai Formation in certain gas field of Yinggehai Basin was built.The result indicates that log reconstruction by forward modeling can obtain a better sonic curve in shallow gas reservoir,and build a better relation between well and seismic attribute.Coordinated coknging simulation can be complete using the wave impedance of seismic inversion constrained by well as the second variable,which will decrease the indeterminacy of stochastic simulation result.The simulation result accords with geologic knowledge and actual production test,and can characterize the separation relationship in gas reservoir quantitatively.更多还原