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塔里木油田越来越多井的孔隙度资料仅采集常规数字声波;储层的准确解释,要求数字声波时差质量必须满足测井解释要求。但数字声波测井资料在现场测井过程中,由于受到各种不同因素的影响,使得声波时差并不能完全直接用于测井解释。文中通过对数字声波测井仪器及采集原理的研究,分析了影响现场数字声波时差质量的各种原因;提出只有在全波包含纵波首波的情况下,才能对声波时差进行重新提取;以及检查数字声波时差质量可靠性的方法。该方法在现场进行了广泛应用,为储层解释提供了重要参考。
More and more porosity data from the Tarim oilfield only capture conventional digital sound waves; accurate interpretation of the reservoir requires that the quality of the digital sounding time lag must meet logging interpretation requirements. However, in the process of on-site logging, digital acoustic logging data can not be directly used for logging interpretation due to various factors. Through the study of digital acoustic logging tools and acquisition principle, the reasons that affect the quality of digital sounding time difference in the field are analyzed. It is proposed that the time difference of acoustic wave can be extracted again only when the full wave includes the first wave of longitudinal wave. The Method of Quality Reliability of Digital Sonic Time Difference. The method is widely used in the field and provides an important reference for reservoir interpretation.