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岩石电性参数(电阻率、介电常数等)频散是岩石介质的重要特征之一,利用岩石电阻率频散特性发展起来的测井——双频电阻率测井方法,有望改善和提高陆相沉积地层油气评价的质量和能力。应用电性参数的频散特性进行地层评价是目前定义的双频电阻率测井的主要特点。本文从电阻率测井基本原理出发,介绍了双频电阻率测井的理论依据及测井原理,仪器性能指标及适用范围,通过在胜利及中原油田部分井上的测井解释实施,取得了较好效果,证明了双频电阻率电阻率测井方法有效性,特别是在低水淹层的解释上与油藏动态生产特征符合率较高,该项测井技术有着良好的应用前景。
Frequency dispersion of rock electrical parameters (resistivity, dielectric constant, etc.) is one of the important characteristics of rock media. The logging-dual-frequency resistivity logging method developed by using the dispersion characteristics of rock resistivity is expected to improve and improve Quality and capability of oil and gas evaluation in continental depositional strata. The application of the dispersion characteristics of electrical parameters for stratigraphic evaluation is the main feature of the dual-frequency resistivity log currently defined. Based on the basic principle of resistivity logging, this paper introduces the theoretical basis of dual-frequency resistivity logging, and the logging principle, instrument performance index and applicable scope. By logging interpretation in Shengli and some wells in Zhongyuan oilfield, Good results. It proves the validity of the dual-frequency resistivity logging method. Especially, the coincidence rate with the dynamic production characteristics of the reservoir is high on the interpretation of the low-water flooded layer. This logging technology has good application prospect.