复视电阻率(CR)法在油气预测中的应用  

Application of complex apparent resistivity (CR) method in prediction of oil/gas.

作　　者：苏朱刘[1] 吴信全 胡文宝[1] 曾军[3] 宫建清[3] 卿召强 严良俊[1] 

机构地区：[1]CNPC物探重点实验室长江大学研究室 [2]新疆正通诚信科技有限公司 [3]CNPC新疆油田分公司

出　　处：《石油地球物理勘探》2005年第4期467-471,共5页Oil Geophysical Prospecting

基　　金：中国石油天然气集团公司项目(编号03A10104)湖北省教育厅重大项目(编号20042002)资助

摘　　要：在准噶尔盆地CE油田的上方存在明显的极化异常,其极化率大于10%,电磁相位大干2.0MRI),但电阻率值普遍小于8.0Ω·m,故在该油田的周边地带实施了用于油气田勘探和预测的复视电阻率(CR)法。野外观测采用偶极-偶极装置,资料处理采用一种新的激电异常和电磁感应耦合效应的分离技术——基于柯尔-柯尔(Cole-Cole)模型和布朗(Brown)模型乘法组合的重整化谱参数相位交错拟合法。试验结果表明,CR法可以精细刻画勘探设计中预定深度范围内的激电异常纵、横向变化特征,为井位设计提供了可靠的地球物理依据。预测的激电异常也为随后的钻探所证实。There exists obvious polarization anomaly above CE oilfield of Junggar basin,the polarization is greater than 10%, the electromagnetic phase is greater than 2. 0 MRD,but the resistivity is gener- ally less than 8. 0Ω·m,so the method of complex apparent resistivity (CR) used for exploration and prediction of oil/gas fields was implemented in surrounding areas of the oilfield. The dipole-dipole configuration was used in field geometry; during the data processing,a new technique separated the induced polarization anomaly from electromagnetic induction effect--reforming spectrum parameter phase stagger fit method was used,which is based on multiplication combination of Cole-Cole model with Brown model. The experimental results showed that CR method could finely describe vertical and horizontal feature of induced polarization anomaly within schedule depth scope in exploration design and provide reliable geophysical basis for well-site design. The predicted induced polarization anomaly was confirmed by following drilling practice.

关 键 词：激发极化法 复视电阻率法 激电谱 电磁谱 柯尔—柯尔模型 布朗模型 重整化谱参数 相位交错拟合法 油气预测 视电阻率 

分 类 号：P618.130.8[天文地球—矿床学] P631.322[天文地球—地质学]