【摘要】 本文提出了一种检查油井固井质量的测井方案——兰姆波环行传播测井。本方法利用兰姆波在套管中作环行传播时其衰减程度与套管外的媒质有关,根据接收到的声波讯号的幅值可以判断出水泥胶结的程度。本方法有定域准确的优点。本文从实验上探讨了这一方案的可能性。更多还原

【Abstract】 This paper presents a proposal of cement bond logging, i.e. Lamb wave log by its circumferential travelling. The attenuation of Lamb waves propagated along casing circumference depends on the medium characteristics outside the pipe, then the cement bonding quality can be determined according to the amplitude of the acoustical signals received. The advantage of this method is the accurate location of the bonding flaws. This proposal has been studied in laboratory scale research.更多还原