众所周知,钻井泥浆对测井的影响涉及到各种测井参数,特别是化学泥浆使电法测井信息失真,引起人们关注,故本文略加讨论。 以往讨论电法测井时,对泥浆多以如下假设条件为基础,第一、地层水矿化度高于泥浆矿化度;第二、地层水和泥浆的离子成分都是同一NaCl溶液;第三、泥浆电阻率大于地层水电阻率。在当时,这与实际情 It is well-known that the influence of drilling mud on logging involves various logging parameters, especially the chemical mud which disturbs the electrical logging information and attracts people’s attention. This article will discuss briefly. In the past, when discussing electrical logging, the mud was mostly based on the following assumptions: first, the salinity of formation water was higher than the mud salinity; second, the ion composition of formation water and mud was the same NaCl solution; Third, the mud resistivity is greater than the formation water resistivity. At the time, this is the actual situation