绪论在油井中使用地球物理方法测井,大约是在五十年前开始。最早的测井方法是从地面电法勘探借用过来的,开始也和在地面上一样,一点一点地进行观测,然后计算视电阻率。可是不久就发现,这样做是行不通的,如果点子取得太密,工作量很大,测井时间太长,而取点很稀又无法达到分层等地质要求。但是,人们很快就利用了井内存在连 INTRODUCTION The use of geophysical method logs in wells has been around for about 50 years. The earliest well logging method was borrowed from the ground electrical prospecting and started to be observed a little bit as well as on the ground, then the apparent resistivity was calculated. However, it was soon discovered that this would not work. If the ideas were too dense, the workload was heavy, the logging time was too long and the points were too thin to meet the geological requirements such as stratification. However, people quickly exploited well memory