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Field Applications of a New Nuclear Magnetic Resonance Fluid Characterization Method

机译：新型核磁共振流体表征方法的现场应用

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摘要

This paper discusses the application of a new magnetic resonance fluid (MRF) characterization method to field data acquired by a nuclear magnetic resonance (NMR) well-logging tool. The theoretical and experimental foundation underlying the method was discussed in a previous publication. The MRF method provides a detailed formation evaluation of the near-wellbore region investigated by modern NMR logging tools. This information includes total and bound-fluid porosities, hydrocarbon saturations, oil viscosities, and hydrocarbon-corrected permeabilities. This paper presents MRF oil saturation and viscosity estimates in oil-bearing wells. In this paper, we first provide a short review of the main ideas and key equations that make up the MRF method. We discuss the generalization of the MRF method to logging data acquired by the Combinable Magnetic Resonance (CMR) tool and apply the method to mixture data acquired by a CMR tool on crude-oil and water samples. We also discuss the existing database of MRF results on partially saturated rocks and present new laboratory results that include blind tests on Yates field dolomite rocks measured at initial and residual oil saturation. The sources of uncertainty inherent in NMR diffusion-based viscosity estimation in reservoir rocks are discussed, and we propose a strategy that accounts for the uncertainties and provides reasonable estimates of oil saturations and viscosities. The strategy is applied to the MRF analysis of the field data in this paper. The MRF method is applied to CMR station log data acquired in three wells. Analysis of the MRF data and the results from each of these wells is discussed.
机译：本文讨论了一种新的磁共振流体（MRF）表征方法在核磁共振（NMR）测井工具采集的现场数据中的应用。该方法的理论和实验基础已在以前的出版物中进行了讨论。 MRF方法提供了通过现代NMR测井仪研究的近井眼区域的详细地层评价。该信息包括总流体孔隙率和结合流体孔隙率，烃饱和度，油粘度和烃校正的渗透率。本文介绍了含油油井中的MRF油饱和度和粘度估算值。在本文中，我们首先简要回顾一下构成MRF方法的主要思想和关键方程式。我们讨论了MRF方法对可组合磁共振（CMR）工具获取的测井数据的一般化，并将该方法应用于CMR工具获取的原油和水样的混合数据。我们还将讨论部分饱和岩石的MRF结果的现有数据库，并提供新的实验室结果，包括对在初始和残余油饱和度下测得的Yates油田白云岩进行盲测。讨论了基于NMR扩散的储层岩石粘度估算中固有的不确定性来源，我们提出了一种策略，该策略考虑了不确定性并提供了油饱和度和粘度的合理估计。本文将该策略应用于现场数据的MRF分析。 MRF方法应用于在三口井中采集的CMR站测井数据。讨论了MRF数据的分析以及每个井的结果。

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