5频等参数阵列相位差感应电阻率

5-Frequency isoparametric array induction resistivity logging tool

随着复杂油气田的广泛勘探,对测井技术提出了新的要求,阵列感应电阻率的出现可得到较准确的地层真电阻率,但我国的阵列感应电阻率测井仪主要依赖进口,限制了我测井不能在与仪器供给商有利益冲突的国家或地区进行同类作业服务.本文介绍了5频等参数阵列相位感应电阻率测井仪器原理、设计流程,与常规感应电阻率、俄罗斯VIKIZ测井资料的对比.阵列相位差感应电阻率测井仪较好的解决了常规感应测井仪器中存在的纵向分辨率差、径向探测深度浅、井眼影响大、不能解决复杂侵入剖面等问题,具有较好的分辨能力,适合于水淹层测井、薄层测井、剩余油测井.

With complex formation structure occurring in the process of exploration in oilfields, the log evaluation technology is encountering momentous challenges. Array induction logging tools which give true formation resistivity have been successfully applied to solve these problems, but china logging companies mainly import array induction resistivity logging tools from abroad and don＇t give logging in areas exporters work in. In this paper, the basic principle and designed procedure are given and 5-frequency isoparametric array phase induction resistivity logging（IAPIR） data are compared with conventional induction logging data and VIKIZ logging data,, IAPIR can solve some problems better such as low axial resolution, indefinite radial investigation depth, borehole effects and insolvable complex invasion profile, etc. which exist in conventional induction logging tools. IAPIR has supper resolution in both radial and axial direction and is adapt to log in watered-out zone, thinner reservoir and evaluation of remaining oil.