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五十年代中期,声波水泥胶结测井开始用于生产,六十年代又补充了声波波列测井(即所谓“变密度”测井),作为声波水泥胶结测井记录的一部分。近三十年来,声波水泥胶结测井在石油工业中广泛应用,取得了明显效果,成为检查固井质量的常规方法。但是在实践中发现这种常规方法存在如下缺点,例如: ·由于使用单发射器、单接收器,测量结果受井内流体的衰减特性、换能器灵敏度、
In the mid-1950s, sonic cement cementation logging began to be used in production, and in the 1960s sonic logging (known as “variable density” logging) was supplemented as part of acoustic cement cementation logging. In the past three decades, acoustic cement cementing logging has been widely used in the petroleum industry and has achieved remarkable results. It has become a routine method for checking cementing quality. However, it has been found in practice that such a conventional method suffers from the following drawbacks, for example: • Due to the use of a single emitter, a single receiver, the measurement results are affected by the fluid attenuation characteristics of the well, transducer sensitivity,