摘要
本文通过模拟计算套管井中理论波型,分别讨论了钢—水泥—地层胶结好坏三种情况.认为全波列声波测井不仅能评价低比重水泥固结质量,而且还能解决水泥胶结第二界面问题,这对提高固并质量、防止油层污染、油水窜流等现象有着十分重要的意义。
This paper presents a theoretical calculation emulating acoustic wave propagation in acased well. Three conditions of cementation grades are discussed on the interfaces betweencasing, cement and formation. The authors allege that full wavetrain acoustic logging can beused to evaluate not only cement bond quality by low weight cement but also the bond qualityof second interface (between cement and formation). This is very significant for improvingcementation quality and preventing oil zone from contamination and from channelling be-tween oil and water zones.
