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自1993年在沙特阿拉伯引进阵列感应测井仪(AIT)以来,AIT已被广泛应用于各种岩石物理环境,如:淡水泥浆、盐水泥浆、高电阻率地层、低电阻率地层、碳酸盐岩层序和碎屑岩层序中的含油气及含水储集层。在本文的一些实例中,为便于进行比较,将AIT与相量感应PD或双侧向测井一起使用。因为用任何电阻率仪(如AIT的第一代仪器)时,都不可勿视精确的R_的测量值。但是由于AIT有多种纵向分辨率和探测深度,所以我们发现,该井下仪能产生关于储集层的附加信息,这是用老的感应测井无法实现的。 AIT可提高薄层、复杂侵入剖面或需要进行井眼校正(冲洗带、盐水泥浆、高电阻率)中R_的估算精度。在许多情况下,用AIT较之双感应或双侧向测井仪来说更容易识别被侵入的渗透层。典型的例子是环形带的解释。最后给出在薄的磁标准层中AIT的特征响应。
AIT has been used in a wide range of petrophysical environments since the introduction of array induction logging tools (AITs) in Saudi Arabia in 1993, such as freshwater slurries, brine slurries, high-resistivity formations, low-resistivity formations, carbonates Petroliferous and aquifer reservoirs in rock sequences and clastic sequence. In some examples herein, AIT is used with phasor sensing PD or dual lateral logs for ease of comparison. Because of the use of any resistivity meter (such as AIT’s first generation of instruments), can not be considered accurate R_ measurements. However, because of the variety of vertical resolution and depth of investigation of the AIT, we found that the downhole tool could generate additional information about the reservoir that could not be achieved with older induction logging. AIT improves the accuracy of estimating R_ in thin layers, complex intrusion profiles or in borehole calibration (wash zone, brine slurry, high resistivity). In many cases, the penetration of an infiltrated permeable layer can be more easily identified with AIT than with dual or dual-sided logging tools. A typical example is the interpretation of a ring belt. Finally, the characteristic response of AIT in a thin magnetic reference layer is given.