公开(公告)号：US06950748B2

公开(公告)日：2005-09-27

申请号：US10604492

申请日：2003-07-25

申请人： Cheng Bing Liu ,  Qiming Li ,  Frank P. Shray ,  Jacques Tabanou

发明人： Cheng Bing Liu ,  Qiming Li ,  Frank P. Shray ,  Jacques Tabanou

IPC分类号： G01V3/20 ,  G01V3/38

CPC分类号： G01V3/20

摘要： Techniques for determining a formation property by simplifying various two-geological-layer or multi-geological-layer models into a multi-electrical-layer model. A volume fraction of a layer in a multi-electrical-layer model is determined for an anisotropic region (sliding window) of the formation. The multi-electrical-layer electrical model includes a relative-lower-resistivity layer and a relative-higher-resistivity layer. A high-resolution resistivity measurement is used in the determination and resistivities for the relative-lower-resistivity layer and for the relative-higher-resistivity layer based on the volume fraction and bulk resistivity measure ments of the anisotropic region are determined. The formation property is based on the volume fraction, the resistivity of the relative-lower-resistivity layer, the resistivity of the relative-higher-resistivity layer, a total porosity of the anisotropic region, and bulk resistivity measurements of the region.

摘要翻译： 通过将各种地质层或多地质层模型简化为多电层模型来确定地层特性的技术。 针对地层的各向异性区域（滑动窗口）确定多电层模型中的层的体积分数。 多电层电气模型包括相对低电阻率层和相对较高电阻率的层。 在相对较低电阻率层的确定和电阻率中使用高分辨率电阻率测量，并且基于各向异性区域的体积分数和体电阻率测量确定相对较高电阻率层。 形成性质基于体积分数，相对低电阻率层的电阻率，相对高电阻率层的电阻率，各向异性区域的总孔隙率和该区域的体电阻率测量值。

公开(公告)号：US06832159B2

公开(公告)日：2004-12-14

申请号：US10249612

申请日：2003-04-23

申请人： Jan W. Smits ,  Peter T. Wu ,  Qiming Li ,  Cheng Bing Liu

发明人： Jan W. Smits ,  Peter T. Wu ,  Qiming Li ,  Cheng Bing Liu

IPC分类号： G01V1100

CPC分类号： G01V11/00 ,  G01V1/50

摘要： A method for identifying environmental effects in well log data includes selecting a plurality of models, each of the plurality of models including at least one parameter to be optimized; fitting the models to the well log data by optimizing the at least one parameter, the fitting producing a plurality of optimized models; determining an indicator of goodness of fit for each of the plurality of optimized models; and selecting a model representing a best fit of the well log data based on the indicator.

摘要翻译： 用于识别测井数据中的环境影响的方法包括选择多个模型，所述多个模型中的每个模型包括要优化的至少一个参数; 通过优化所述至少一个参数将所述模型拟合到所述测井数据，所述拟合产生多个优化模型; 确定所述多个优化模型中的每一个的适合度的指标; 并根据该指标选择表示井测井数据的最佳拟合的模型。

公开(公告)号：US06591673B1

公开(公告)日：2003-07-15

申请号：US09980128

申请日：2001-11-28

申请人： Cheng Bing Liu

发明人： Cheng Bing Liu

IPC分类号： G01V338

CPC分类号： G01V11/00 ,  G01V3/38

摘要： A method of identifying the fluid type of subterranean formations according to the correlation between the variation trend of electrical resistivity with depth downhole in a borehole and the variation trend of porosity with depth downhole in the same borehole. The method includes the steps of: a) determining the rate of change with depth of a resistivity parameter (such as deep resistivity) of the formation surrounding the borehole; b) determining the rate of change with depth of a porosity parameter (such as total porosity and/or free fluid porosity measured by a nuclear magnetic resonance technique) of the formation surrounding the borehole; c) determining a comparison of the rate of change with depth of such resistivity parameter and the rate of change with depth of such porosity parameter for a given depth in the borehole; and d) using the comparison to determine the nature of the fluid in the formation surrounding the borehole at that depth downhole or in a given depth window downhole.

摘要翻译： 根据井下井下电阻率变化趋势与井下深度变化趋势的相关性以及相同井眼井下孔隙度变化趋势的相关性，确定地下地层流体类型的方法。 该方法包括以下步骤：a）确定围绕钻孔的地层的电阻率参数（如深度电阻率）的深度变化率; b）确定围绕钻孔的地层孔隙度参数（例如通过核磁共振技术测量的总孔隙率和/或自由流体孔隙）的深度的变化率; c）确定井眼中给定深度的这种电阻率参数的变化率与深度的比较以及这种孔隙度参数的深度变化率; 以及d）使用比较来确定钻井周围钻井中的深度井下或在井下给定的深度窗口内的流体性质。