M盆地淡水地层油层电性标准研究  

On the Electric Property Standard of Payzone in Fresh Water Formation of M Basin.

作　　者：孙黎娟[1] 吴凡[1] 王世坤[1] 

机构地区：[1]中原油田分公司勘探开发科学研究院

出　　处：《测井技术》2001年第3期212-214,共3页Well Logging Technology

摘　　要：M盆地 L区地层水为淡水类型 ,各井随埋深的不同及钻井泥浆性能的不同 ,油、水电性识别极为困难。油、水层二者间的各种电阻率的交叉范围很大 ,应用经典的确定某一电阻率值的方法或 RL Ld- RMSF L等关系不可能建立其有效的图版。自然电位曲线是主要反映泥浆滤液与地层水关系的电测曲线 ,自然电位异常幅度值ΔVSP亦与地层电阻率有关。根据自然电位电性原理 ,对 M盆地 L区试油层的 RLL d-ΔVSP的关系进行了研究。研究表明 ,油、水层在 RL Ld-ΔVSP图版上具有明显的界面 ,利用界面方程可对 M盆地 L区油、水层进行有效的判别 。The formation water in L area, M Basin is fresh. The natures of drilling mud vary with different drilling depth. There is a complicated relationship between electric properties of water and oil. The crossing scope between electricity of water and that of oil is so big that it is impossible to set up an effective interpretation chart using the conventional method or the relationship of R LLD and R MSFL .SP curve reflects the relationship between mud and formation water. The anomalous amplitudes of SP curve—? ぃ? SP are related to the formation water. Based on the electric nature of SP, the relationship of R LLd and Δ V SP is studied in this paper. It is shown that there exists obvious interface between oil and water zones in the R LLd -Δ V SP crossplot, the pay zone and water zone can, therefore, be identified using the interface equations.

关 键 词：侧向测井 微球形聚焦测井 自然电位 淡水地层 油层 电性能 非洲 M盆地 

分 类 号：TE151[石油与天然气工程—油气勘探] P631.811[天文地球—地质矿产勘探]