摘要
新研制的 5 70 0测井系列中的薄层电阻率TBRt(ThinBedResistivity)测井不仅有足够的垂向分辨率(5cm) ,而且有足够的径向探测深度 (33～ 35cm) ,它能够提供完全不受围岩影响的 ,包括薄层在内的可信赖的地层电阻率。而在常规仪器中这二者常是相互制约的。因此 ,TBRt仪器能在薄层评价中显出其独特的优势。本文阐述了TBRt测井仪器的基本原理和响应特征 (垂向分辨率和径向探测深度 ) ,并列举了在河南油田的应用实例。
In order to evalute thin bed, the logging instruments of resistivity must make two responses： sufficient vertical resolution; enough radium investigation depth, but it can＇t be solved for the ordinary instruments. New developped instrument of 5700 well log series, TBRt, can simultaneously needs two demonds. It can present the true resisitivity of formation,which include the thin bed, without the surrounding bed influence. So TBRt has a particular advantage of evalution for the thin bed. The paper describes the TBRt basic theory and responses characters （vertical resolution and radiual investigation depth ）,and gives an example of Henan oil fields.
出处
《工程地球物理学报》
2004年第2期190-194,共5页
Chinese Journal of Engineering Geophysics
关键词
垂向分辨率
径向探测深度
薄层评价
vertical resolution
radium investigation depth
evalution of the thin bed
