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    Methods for Characterizing Asphaltene Instability in Reservoir Fluids
    1.
    发明申请
    Methods for Characterizing Asphaltene Instability in Reservoir Fluids 有权
    表征油藏流体中沥青质不稳定性的方法

    公开(公告)号：US20130112406A1

    公开(公告)日：2013-05-09

    申请号：US13696780

    申请日：2011-04-20

    申请人： Youxiang Zuo ,  Oliver C. Mullins ,  Chengli Dong ,  Denise Freed ,  Andrew Pomerantz ,  Eric Lehne ,  Dingan Zhang

    发明人： Youxiang Zuo ,  Oliver C. Mullins ,  Chengli Dong ,  Denise Freed ,  Andrew Pomerantz ,  Eric Lehne ,  Dingan Zhang

    IPC分类号： E21B47/10

    CPC分类号： E21B49/10 ,  E21B2049/085

    摘要： A methodology for reservoir understanding that performs investigation of asphaltene instability as a function of location in a reservoir of interest. In the preferred embodiment, results derived as part of the investigation of asphaltene instability are used as a workflow decision point for selectively performing additional analysis of reservoir fluids. The additional analysis of reservoir fluids can verify the presence of asphaltene flocculation onset conditions and/or determine the presence and location of phase-separated bitumen in the reservoir of interest.

    摘要翻译： 一种油藏理解方法，用于对沥青质不稳定性进行调查，作为感兴趣的水库中的位置的函数。 在优选实施例中，作为沥青质不稳定性调查的一部分而导出的结果被用作选择性地进行储层流体附加分析的工作流决策点。 储层流体的额外分析可以验证沥青质絮凝起始条件的存在和/或确定相关储层中相分离沥青的存在和位置。

    Integrated formation modeling systems and methods
    4.
    发明授权
    Integrated formation modeling systems and methods 有权
    综合地层建模系统和方法

    公开(公告)号：US09366776B2

    公开(公告)日：2016-06-14

    申请号：US13295085

    申请日：2011-11-13

    申请人： ChengGang Xian ,  Chengli Dong ,  Oliver C. Mullins ,  Ricardo R. Vasques

    发明人： ChengGang Xian ,  Chengli Dong ,  Oliver C. Mullins ,  Ricardo R. Vasques

    IPC分类号： G01V1/28 ,  G01V1/50

    CPC分类号： G01V1/50 ,  G01V1/282 ,  G01V2210/61 ,  G01V2210/614

    摘要： Integrated formation modeling systems and methods are described. An example method of performing seismic analysis of a subterranean formation includes obtaining seismic data of the formation, obtaining fluid from the formation and analyzing at least some of the fluid to determine a fluid parameter. The example method additionally includes generating a model of the formation based at least on the seismic data and modifying the model based on the fluid parameter.

    摘要翻译： 描述了综合地层建模系统和方法。 执行地下地层的地震分析的示例性方法包括获得地层的地震数据，从地层获得流体并分析至少一些流体以确定流体参数。 该示例性方法还包括至少基于地震数据生成地层模型并基于流体参数修改模型。

    Determining phase transition pressure of downhole retrograde condensate
    5.
    发明授权
    Determining phase transition pressure of downhole retrograde condensate 有权
    确定井下逆行冷凝水的相变压力

    公开(公告)号：US07075063B2

    公开(公告)日：2006-07-11

    申请号：US10670615

    申请日：2003-09-25

    申请人： Chengli Dong ,  Soraya S. Betancourt ,  Go Fujisawa ,  Oliver C. Mullins ,  James J. Dunlap

    发明人： Chengli Dong ,  Soraya S. Betancourt ,  Go Fujisawa ,  Oliver C. Mullins ,  James J. Dunlap

    IPC分类号： G01V8/00

    CPC分类号： G01V8/02

    摘要： The invention provides a method for determining phase transition pressure of downhole retrograde condensate. An OBM-contamination value is produced from a time-series of fluorescence values produced by measuring fluorescence emitted from a single-phase flow of OBM-contaminated formation fluid in a downhole cell during a cycle of time. The pressure of fluid in the cell is set at a transition boundary by incrementing drawdown pressure and monitoring the presence or absence of a phase transition. An apparent phase transition pressure value associated with the cycle of time is produced by setting apparent phase transition pressure value equal to cell pressure. This process is repeated for several cycles of time to produce a number of pairs of OBM-contamination value and apparent phase transition pressure value as OBM-contamination decreases over time. The value of phase transition pressure is determined by extrapolating from a representation of apparent phase transition pressure values versus OBM-contamination values.

    摘要翻译： 本发明提供一种确定井下逆行冷凝物相变压力的方法。 OBM污染值是通过在一段时间内通过测量从井下孔中的OBM污染的地层流体的单相流发射的荧光产生的荧光值的时间序列产生的。 通过增加压降压力并监测相变的存在或不存在，将电池中的流体压力设定在过渡边界。 通过将表观相变压力值设置为等于电池压力来产生与时间周期相关的表观相变压力值。 该过程重复几个周期，以产生多个OBM污染值和表观相变压力值对，因为OBM污染随时间而减少。 通过从表观相变压力值与OBM污染值的表示进行外推来确定相变压力的值。

    Apparatus and methods to analyze downhole fluids using ionized fluid samples
    6.
    发明授权
    Apparatus and methods to analyze downhole fluids using ionized fluid samples 有权
    使用离子流体样品分析井下流体的装置和方法

    公开(公告)号：US08230916B2

    公开(公告)日：2012-07-31

    申请号：US12246039

    申请日：2008-10-06

    申请人： Ernest N. Sumrall ,  Anthony Goodwin ,  Erik Quam ,  Chengli Dong ,  Oliver C. Mullins

    发明人： Ernest N. Sumrall ,  Anthony Goodwin ,  Erik Quam ,  Chengli Dong ,  Oliver C. Mullins

    IPC分类号： E21B49/08

    CPC分类号： G01N33/2823 ,  E21B49/10

    摘要： Apparatus and methods to analyze downhole fluids are described herein. A disclosed example method involves obtaining a sample of a downhole fluid. Additionally the example method involves ionizing at least a portion of the sample to decompose molecules having a relatively high molar mass into molecules having a relatively lower molar mass. Further, the example method involves analyzing the ionized portion of the sample to determine a parameter of the downhole fluid sample.

    摘要翻译： 本文描述了分析井下流体的装置和方法。 公开的示例性方法涉及获得井下流体的样品。 另外，实施例方法涉及将至少一部分样品电离以将具有较高摩尔质量的分子分解成具有相对较低摩尔质量的分子。 此外，示例性方法包括分析样品的电离部分以确定井下流体样品的参数。

    DOWNHOLE FLUID SPECTROSCOPY
    8.
    发明申请
    DOWNHOLE FLUID SPECTROSCOPY 有权
    井底流体光谱

    公开(公告)号：US20100282959A1

    公开(公告)日：2010-11-11

    申请号：US12436898

    申请日：2009-05-07

    申请人： Chengli Dong ,  Oliver C. Mullins ,  Michael O'Keefe

    发明人： Chengli Dong ,  Oliver C. Mullins ,  Michael O'Keefe

    IPC分类号： G01V8/00

    CPC分类号： G01V8/02

    摘要： An example method for determining a partial density of a compound in a downhole fluid may comprise exposing the downhole fluid to an electromagnetic radiation, and measuring a spectrum of radiation absorption by the downhole fluid. An absorption peak of the compound may be identified in the measured spectrum. A first parameter indicative of radiation absorption by the downhole fluid may be determined in the identified absorption peak. Second and third parameters indicative of radiation absorptions by the downhole fluid may be determined essentially out of the identified absorption peak. A weighted combination of the second and third parameters may be computed, and the partial density of the compound may be determined from a difference between the weighted combination and the first parameter.

    摘要翻译： 用于确定井下流体中化合物的部分密度的示例性方法可以包括将井下流体暴露于电磁辐射，以及测量井下流体的辐射吸收谱。 化合物的吸收峰可以在测量的光谱中鉴定。 可以在所识别的吸收峰中确定表示井下流体的辐射吸收的第一参数。 可以基本上从所识别的吸收峰确定表示井下流体的辐射吸收的第二和第三参数。 可以计算第二和第三参数的加权组合，并且可以根据加权组合和第一参数之间的差来确定化合物的部分密度。

    APPARATUS AND METHODS TO ANALYZE DOWNHOLE FLUIDS USING IONIZED FLUID SAMPLES
    9.
    发明申请
    APPARATUS AND METHODS TO ANALYZE DOWNHOLE FLUIDS USING IONIZED FLUID SAMPLES 有权
    使用离子液体样品分析舷外流体的装置和方法

    公开(公告)号：US20090126928A1

    公开(公告)日：2009-05-21

    申请号：US12246039

    申请日：2008-10-06

    申请人： Ernest N. Sumrall ,  Anthony Goodwin ,  Erik Quam ,  Chengli Dong ,  Oliver C. Mullins

    发明人： Ernest N. Sumrall ,  Anthony Goodwin ,  Erik Quam ,  Chengli Dong ,  Oliver C. Mullins

    IPC分类号： E21B49/08

    CPC分类号： G01N33/2823 ,  E21B49/10

    摘要： Apparatus and methods to analyze downhole fluids are described herein. A disclosed example method involves obtaining a sample of a downhole fluid. Additionally the example method involves ionizing at least a portion of the sample to decompose molecules having a relatively high molar mass into molecules having a relatively lower molar mass. Further, the example method involves analyzing the ionized portion of the sample to determine a parameter of the downhole fluid sample.

    摘要翻译： 本文描述了分析井下流体的装置和方法。 公开的示例性方法涉及获得井下流体的样品。 另外，实施例方法涉及将至少一部分样品电离以将具有较高摩尔质量的分子分解成具有相对较低摩尔质量的分子。 此外，示例性方法包括分析样品的电离部分以确定井下流体样品的参数。