声电效应对自然电位测井曲线的影响  

Impact of acoustoelectric effect on self-potential log

作　　者：王莹[1] 杨帆[1] 马文中[1] 

机构地区：[1]大庆油田测井公司

出　　处：《石油仪器》2013年第1期60-62,9-10,共3页Petroleum Instruments

摘　　要：自然电位测井是最早实现的常规测井项目之一,直到现在,自然电位测井曲线在油气勘探中仍然起着重要的作用。测井采集时发现当声波、侧向、自然电位并测时自然电位曲线有分辨率增加的现象。究其微观机理与声电转换有关,而声电转换与地层的双电层结构有关。因此通过声波、侧向对地层的双电层结构产生的微扰,能够根据微扰前后的自然电位曲线差异,得到地层孔隙结构信息,从而提供新的测井方法,进而得到渗透率等参数。这对于完善地评价地层结构有着重要的意义。Spontaneous potential logging is one of the conventional logging projects implemmented originally.Until now,spontaneous potential logging curve still plays an important role in the oil and gas exploration.In the acqusition of logging data,when the sonic wave,lateral and natural potential are tested simultaneously,the self-potential curve resolution will probably increase.The root of the micro-mechanism is related to the acoustoelectric transformations,and acoustoelectric transformation is related to the formation of double-layer structure.So by sound waves and permeability of the Lateral to the formation of electric double-layer structure,the pore structure information is got.By this new logging method,parameters such as permeability are provided.This has important significance for improving evaluation of formation of structure.

关 键 词：自然电位 双电层 渗透率 

分 类 号：P631.84[天文地球—地质矿产勘探]