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1. 发明授权

US4484470A Method and apparatus for determining characteristics of clay-bearing formations 失效
标题翻译：确定含粘土地层特征的方法和装置
公开(公告)号：US4484470A
公开(公告)日：1984-11-27
申请号：US455772
申请日：1983-01-05
申请人： Walter H. Fertl , Naum Ruhovets
发明人： Walter H. Fertl , Naum Ruhovets
IPC分类号： E21B49/00 , G01V11/00
CPC分类号： G01V11/00 , E21B49/00
摘要： The volume of clay within earth formations is determined throughout the vertical extent of a borehole using measurements of the natural gamma rays emitted from these formations comprised substantially entirely of clay. The clay volume determination is used for evaluating the volume of potassium oxide present in the formations. The percent of expandable layers present within the formations is determined, as a direct indicator of potential clay swelling difficulties and thus sensitivity to formation damage sensitivity, based on an extropolated and normalized potassium oxide volume. The percent expandable layers determination is used for determining the cation exchange capacity of the formations.
摘要翻译：使用从基本上完全由粘土组成的这些地层发射的天然γ射线的测量，在钻孔的整个垂直范围内确定地层内的粘土体积。粘土体积测定用于评价地层中存在的氧化钾的体积。确定存在于地层内的可膨胀层的百分比，作为潜在的粘土膨胀困难的直接指标，并因此基于均质和归一化的氧化钾体积对地层损伤敏感性的敏感性。可膨胀层确定百分比用于确定地层的阳离子交换能力。

2. 发明授权

US5349528A Method apparatus for determination of porosity lithological composition 失效
标题翻译：用于确定孔隙度岩性组成的方法装置
公开(公告)号：US5349528A
公开(公告)日：1994-09-20
申请号：US22794
申请日：1993-02-23
申请人： Naum Ruhovets
发明人： Naum Ruhovets
IPC分类号： G01V3/28 , G01V11/00 , G01V1/00 , E21B49/00
CPC分类号： G01V11/00 , G01V3/28
摘要： Evaluation of thinly laminated shaly sand reservoirs has long been one of the most difficult problems of log analysis. A primary reason is that only shallow shale indicators such as a Dipmeter, other microresistivity devices, or an ultra high frequency dielectric tool, etc. accomplish resolutions compatible with the most thinly bedded shale or sand laminae. To overcome this problem a technique has been developed to reconstruct deep Induction conductivity and to compute effective porosity and water saturation consistent with the high vertical resolution tools such as the Dipmeter.To achieve greater accuracy in the evaluation of shale content and porosity, the volumes of shale are initially estimated from both a density-neutron crossplot and a high resolution shale indicator which has been integrated to the vertical resolution of the density and neutron logs. Then shale parameters for these logs are automatically adjusted within limits suggested by log data in such a way that computed shale volumes from the shale indicator and density-neutron crossplot match each other. The adjusted parameters are used to compute porosity and shale volume and the mode of distribution from the density and neutron logs and to recompute these results to the high vertical resolution level. This information is in turn used to reconstruct the deep Induction conductivity to the same vertical resolution. The technique allows water saturation determination from a Waxman-Smits type model when both dispersed and laminated clay types are present.
摘要翻译：薄层层状砂岩储层的评价长期以来一直是对数分析最困难的问题之一。主要原因是只有浅层页岩指示器，如Dipmeter，其他微电阻器件或超高频介电工具等才能完成与最薄层页岩或砂层相兼容的分辨率。为了克服这个问题，已经开发了一种技术来重建深感应电导率，并计算与诸如Dipmeter的高垂直分辨率工具一致的有效孔隙率和水饱和度。为了在评估页岩含量和孔隙度方面获得更高的准确性，页岩体积最初是从密度 - 中子交叉图和高分辨率页岩指示器估算出来的，这些页岩指数已被整合到密度和中子测井的垂直分辨率。然后，这些日志的页岩参数将以日志数据建议的限制自动调整，使得来自页岩指示器和密度 - 中子交叉图的计算页岩体积彼此匹配。调整后的参数用于从密度和中子测井计算孔隙度和页岩体积以及分布模式，并将这些结果重新计算到高垂直分辨率水平。这些信息又用于将深感应电导率重建为相同的垂直分辨率。当存在分散和层压粘土类型时，该技术允许来自Waxman-Smits型模型的水饱和度测定。

3. 发明授权

US4584874A Method for determining porosity, clay content and mode of distribution in gas and oil bearing shaly sand reservoirs 失效
标题翻译：确定气藏和含油层砂岩储层孔隙度，粘土含量和分布方式的方法
公开(公告)号：US4584874A
公开(公告)日：1986-04-29
申请号：US660689
申请日：1984-10-15
申请人： Naum Ruhovets
发明人： Naum Ruhovets
IPC分类号： E21B49/00 , G01V11/00
CPC分类号： E21B49/00 , G01V11/00
摘要： A method for determining formation porosity, volume of clay content, and mode of distribution in gas, oil, and water bearing shaly sand reservoirs provides solutions regardless of whether gas and oil densities are known or unknown, whether or not there is invasion of borehole fluids into the connate fluids, and whether or not there is dispersed clay only or both dispersed and laminated clays are present.
摘要翻译：一种确定瓦斯，油和含水沙质砂储层的地层孔隙度，粘土含量和分布方式的方法，无论气体和油密度是已知的还是未知的，是否存在井眼流体侵入进入原生液体，以及是否仅存在分散的粘土或两者分散和层压粘土存在。

4. 发明授权

US4617825A Well logging analysis methods for use in complex lithology reservoirs 失效
标题翻译：用于复杂岩性油藏的测井分析方法
公开(公告)号：US4617825A
公开(公告)日：1986-10-21
申请号：US775294
申请日：1985-09-12
申请人： Naum Ruhovets
发明人： Naum Ruhovets
IPC分类号： E21B49/00 , G01V5/10 , G01V5/14 , G01V11/00 , G01V5/00
CPC分类号： G01V5/10 , E21B49/00 , G01V11/00 , G01V5/14
摘要： Advanced analytic methods and formulas have been developed for 2- and 3- mineral solutions in complex lithology reservoirs. Required logs are density, neutron, acoustic, and photoelectric absorption index (PE curve). On the basis of developed mathematic models of complex reservoirs the limitations and maximum possible errors in the determination of porosities and lithologic compositions are presented for each method. In most cases, the formulas developed are simple enough to be used with programmable calculators.
摘要翻译：已经开发了复杂岩性油藏中2-和3-矿物溶液的先进分析方法和配方。所需的原木是密度，中子，声学和光电吸收指数（PE曲线）。在开发的复杂油藏数学模型的基础上，提出了各种方法测定孔隙度和岩性组成的局限性和最大可能的误差。在大多数情况下，开发的公式足够简单，可与可编程计算器一起使用。

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