摘要
为寻找胜利油气区孤岛油田Ng组剩余油富集区,需要准确求取地层水电阻率,特别是水淹层地层水电阻率,难点在于泥浆滤液电阻率的准确求取。提出一种新的泥浆滤液电阻率确定方法——已知水层标定法。基于自然电位测井原理,用已知水层的电阻率标定井筒泥浆滤液的电阻率,用标定后的泥浆滤液电阻率应用自然电位测井求取目的层的地层水电阻率。该方法能够比较准确地计算地层水的电阻率,对水淹层地层水电阻率的计算也非常有效。
In order to find residual oil of Gudao Oilfield Ng group in Shengli oil/gas zone, formation water resistivity, especially, flooded formation water resistivity needs to be accurately calcu- lated. It is difficult to accurately calculate mud filtrate resistivity. Proposed is a new method to determine mud filtrate resistivity known water layer calibration method. Based on the sponta- neous potential logging principle, wellbore mud filtrate resistivity is calibrated with known water resistivity. With the calibrated mud filtrate resistivity, spontaneous potential can be applied to obtain the formation water resistivity of the target layers. The new method can accurately calculate the formation water resistivity even in water-flooded zones.
出处
《测井技术》
CAS
CSCD
北大核心
2012年第1期37-40,共4页
Well Logging Technology
关键词
自然电位测井
地层水电阻率
泥浆滤液电阻率
剩余油饱和度
水淹层
spontaneous potential logging, formation water resistivity, mud filtrate resistivity, residual oil saturation, water-flooded layer
