高含水期地层水电阻率求取方法  

Determination of Formation Water Resistivity During the High Water-Cut Stage

作　　者：俞军[1] 史謌[1] 王伟男[2] 

机构地区：[1]北京大学地球与空间科学学院,北京100871 [2]大庆石油管理局测井公司,黑龙江大庆163412

出　　处：《北京大学学报（自然科学版）》2005年第4期536-541,共6页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金"九五"重大项目(4989419043)资助

摘　　要：针对油田高含水期地层流体性质和地层压力的变化给应用自然电位曲线求取地层水电阻率产生不利影响的实际问题,从自然电位产生的机理出发,研究了应用自然电位曲线求取地层水电阻率的方法。对影响自然电位曲线的各种因素(井径、层厚、泥浆侵入、泥质含量、过滤电位等)进行了分析,并对其影响因素提出了校正方法。应用实际测井资料解释。The fluid properties and strata pressure have obviously changed during the high water cut stage, which exert unfavorable influence on determining formation water resistivity based on spontaneous potential curves. From the analysis of the mechanism for forming SP, formation water resistivity is obtained with spontaneous potential curves. A variety of factors influencing the SP curves in actual production, such as hole diameter, bed thickness, mud invasion, shale content, electrofiltration potential, etc. are analyzed. Correspondent calibrating methods are proposed. Compared with well test data, the result demonstrates that the formation water resistivity can be accurately determined by the method.

关 键 词：高含水期 地层水电阻率 自然电位 过滤电位 校正 

分 类 号：P631.322[天文地球—地质矿产勘探]