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1. 发明申请

US20110061439A1 METHODS OF CALIBRATING A FLUID ANALYZER FOR USE IN A WELLBORE 有权
标题翻译：用于在井筒中使用的流体分析仪的方法
公开(公告)号：US20110061439A1
公开(公告)日：2011-03-17
申请号：US12666309
申请日：2008-07-03
申请人： Chengli Dong , Ricardo R. Vasques , Michael O'Keefe , Peter S. Hegeman , Oliver C. Mullins , Go Fujisawa , Stephane Vannuffelen , Richard Jackson , Ahmad Saputra
发明人： Chengli Dong , Ricardo R. Vasques , Michael O'Keefe , Peter S. Hegeman , Oliver C. Mullins , Go Fujisawa , Stephane Vannuffelen , Richard Jackson , Ahmad Saputra
IPC分类号： G01N33/00
CPC分类号： E21B49/08 , G01N33/2823 , G01N35/00693
摘要： Methods of calibrating a fluid analyzer for use in a wellbore are described. An example method of generating calibration data for a fluid analyzer for use in a downhole tool involves lowering a downhole tool including a fluid analyzer to a location in a wellbore, measuring, via the fluid analyzer, a characteristic value of a calibration fluid or a vacuum while the fluid analyzer is at the location, obtaining an expected characteristic value for the calibration fluid or the vacuum at the location, and comparing the measured characteristic value to the expected characteristic value to generate a calibration value for the fluid.
摘要翻译：描述了用于在井筒中使用的流体分析仪的校准方法。生成用于井下工具的流体分析仪的校准数据的示例性方法包括将包括流体分析仪的井下工具降低到井眼中的位置，通过流体分析仪测量校准流体或真空的特征值同时流体分析仪位于该位置，获得校准流体的预期特征值或该位置处的真空，并将测量的特征值与预期特征值进行比较以产生流体的校准值。

2. 发明授权

US08555696B2 Methods of calibrating a fluid analyzer for use in a wellbore 有权
标题翻译：校准用于井眼的流体分析仪的方法
公开(公告)号：US08555696B2
公开(公告)日：2013-10-15
申请号：US12666309
申请日：2008-07-03
申请人： Chengli Dong , Ricardo R. Vasques , Michael O'Keefe , Peter S. Hegeman , Oliver C. Mullins , Go Fujisawa , Stephane Vannuffelen , Richard Jackson , Ahmad Saputra
发明人： Chengli Dong , Ricardo R. Vasques , Michael O'Keefe , Peter S. Hegeman , Oliver C. Mullins , Go Fujisawa , Stephane Vannuffelen , Richard Jackson , Ahmad Saputra
IPC分类号： G01N21/00
CPC分类号： E21B49/08 , G01N33/2823 , G01N35/00693
摘要： Methods of calibrating a fluid analyzer for use in a wellbore are described. An example method of generating calibration data for a fluid analyzer for use in a downhole tool involves lowering a downhole tool including a fluid analyzer to a location in a wellbore, measuring, via the fluid analyzer, a characteristic value of a calibration fluid or a vacuum while the fluid analyzer is at the location, obtaining an expected characteristic value for the calibration fluid or the vacuum at the location, and comparing the measured characteristic value to the expected characteristic value to generate a calibration value for the fluid.
摘要翻译：描述了用于在井筒中使用的流体分析仪的校准方法。生成用于井下工具的流体分析仪的校准数据的示例性方法包括将包括流体分析仪的井下工具降低到井眼中的位置，通过流体分析仪测量校准流体或真空的特征值同时流体分析仪位于该位置，获得校准流体的预期特征值或该位置处的真空，并将测量的特征值与预期特征值进行比较以产生流体的校准值。

3. 发明授权

US07002142B2 Determining dew precipitation and onset pressure in oilfield retrograde condensate 有权
标题翻译：确定油田逆行冷凝水中的露水沉淀和起始压力
公开(公告)号：US07002142B2
公开(公告)日：2006-02-21
申请号：US10309850
申请日：2002-12-03
申请人： Oliver C. Mullins , Go Fujisawa , Chengli Dong , Andrew Kurkjian , John Nighswander , Toru Terabayashi , Satoko Yoshida , Hideki Kinjo , Henning Groenzin
发明人： Oliver C. Mullins , Go Fujisawa , Chengli Dong , Andrew Kurkjian , John Nighswander , Toru Terabayashi , Satoko Yoshida , Hideki Kinjo , Henning Groenzin
IPC分类号： G01V8/00
CPC分类号： E21B49/084 , E21B47/1015 , E21B49/005 , E21B49/10 , G01N21/64 , G01N33/241 , G01N33/2823
摘要： A method and apparatus detects dew precipitation and determines dew precipitation onset pressure in a sample of formation fluid located downhole in an oilfield reservoir. In a preferred embodiment, the method includes (a) isolating a sample of formation fluid downhole; (b) illuminating the sample downhole with fluorescence excitation light; (c) measuring at least one characteristic of fluorescence short from the sample; (d) reducing pressure on the sample; (e) repeating steps (b) to (d); (f) detecting dew precipitation when a change is detected in a parameter that is a function of the at least one characteristic of fluorescence emission; and (g) setting dew precipitation onset pressure equal to pressure on the sample when the change in the parameter is detected. The parameter preferably is a function of fluorescence intensity and fluorescence red shift, and the change is an increase in fluorescence intensity and detection of fluorescence red shift. Also, the function includes a ratio of a measured intensity at a first wavelength to a reference intensity, and the reference intensity is a function of a measured intensity at a second wavelength.
摘要翻译：方法和装置检测露点沉淀，并确定位于油田储层中井下的地层流体样品中的露水沉淀开始压力。在一个优选实施例中，该方法包括（a）在井下分离地层流体样品; （b）用荧光激发光照射井下样品; （c）从所述样品测量至少一种荧光短的特征; （d）降低样品压力; （e）重复步骤（b）至（d）; （f）当在作为荧光发射的至少一个特征的函数的参数中检测到变化时，检测露水沉淀; 和（g）当检测到参数变化时，将露珠沉淀开始压力设定为等于样品上的压力。该参数优选是荧光强度和荧光红移的函数，并且荧光强度的变化和荧光红移的检测变化。此外，该功能包括第一波长处的测量强度与参考强度的比率，并且参考强度是第二波长处的测量强度的函数。

4. 发明授权

US06956204B2 Determining fluid properties from fluid analyzer 有权
标题翻译：从流体分析仪确定流体特性
公开(公告)号：US06956204B2
公开(公告)日：2005-10-18
申请号：US10249274
申请日：2003-03-27
申请人： Chengli Dong , Peter S. Hageman , Oliver C. Mullins , Go Fujisawa , Soraya S. Betancourt , Julian Pop , Andrew L. Kurkjian , Toru Terabayashi , Hani M. Elshahawi
发明人： Chengli Dong , Peter S. Hageman , Oliver C. Mullins , Go Fujisawa , Soraya S. Betancourt , Julian Pop , Andrew L. Kurkjian , Toru Terabayashi , Hani M. Elshahawi
IPC分类号： E21B47/10 , G01N21/35 , G01N21/53 , G01N33/28 , G01V5/00
CPC分类号： G01N21/359 , E21B47/10 , E21B47/102 , G01N21/3504 , G01N21/3577 , G01N33/2823
摘要： A method for determining properties of a formation fluid including obtaining data related to an optical density at a methane peak and an optical density at an oil peak for a fluid sample at a plurality of times, calculating an apparent gas-oil-ratio of the sample fluid from the optical density of the fluid sample at the methane peak to the optical density of the fluid sample at the oil peak at each of the plurality of times based on the data, selecting a power function of a sampling parameter for a buildup of the apparent gas-oil-ratio, calculating an exponential constant of the power function based on the data, and determining at least one selected from the group consisting of a contamination free gas-oil-ratio and a percent contamination.
摘要翻译：一种用于确定地层流体性质的方法，包括获得与多个次数相关的甲烷峰值的光密度和油峰值处的光密度相关的数据，计算样品的表观瓦斯油比基于数据，在多个时间点从甲烷峰值处的流体样品的光密度到处于油峰处的液体样品的光密度的流体，选择用于积累的样品的取样参数的功率函数基于该数据计算功率函数的指数常数，并且确定从由无污染的瓦斯油比和污染百分比组成的组中选择的至少一个。

5. 发明授权

US07458258B2 Methods and apparatus for oil composition determination 有权
标题翻译：油组分测定方法和装置
公开(公告)号：US07458258B2
公开(公告)日：2008-12-02
申请号：US11303695
申请日：2005-12-16
申请人： ChengGang Xian , Andrew Carnegie , ChengLi Dong , Oliver C. Mullins , Go Fujisawa
发明人： ChengGang Xian , Andrew Carnegie , ChengLi Dong , Oliver C. Mullins , Go Fujisawa
IPC分类号： E21B47/10
CPC分类号： G01N33/2823 , G01N21/314 , G01N21/359 , G01N21/80 , G01N33/2841
摘要： A method for determining properties of a formation fluid is provided and includes: obtaining fluid data related to Carbon-Hydrogen molecular bonds in C6+ from a fluid analyzer; and considering the fluid data to calculate mass fractions of hydrocarbon flowing through the fluid analyzer. The method further includes computing gas-oil-ratio of hydrocarbon based on the mass fractions of hydrocarbon. Another method for determining a gas-oil-ratio of a formation fluid includes: obtaining fluid data related to Carbon-Hydrogen molecular bonds in C6+ from a fluid analyzer; considering the fluid data to derive mass fractions of gas and oil; and computing gas-oil-ratio of hydrocarbon based on the derived mass fractions.
摘要翻译：提供了一种确定地层流体性质的方法，包括：从流体分析仪获得与C6 +中的碳 - 氢分子键有关的流体数据; 并考虑流体数据来计算流过流体分析仪的烃的质量分数。该方法还包括基于烃的质量分数来计算烃的油 - 油比。用于确定地层流体的瓦斯 - 油比的另一种方法包括：从流体分析器获得与C6 +中的碳 - 氢分子键相关的流体数据; 考虑流体数据导出气体和油的质量分数; 并根据衍生的质量分数计算烃的油 - 油比。

6. 发明授权

US07075063B2 Determining phase transition pressure of downhole retrograde condensate 有权
标题翻译：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。

7. 发明授权

US07028773B2 Assessing downhole WBM-contaminated connate water 有权
标题翻译：评估井下WBM污染的合生水
公开(公告)号：US07028773B2
公开(公告)日：2006-04-18
申请号：US10318800
申请日：2002-12-13
申请人： Go Fujisawa , Oliver C. Mullins , Chengli Dong , Andrew Kurkjian
发明人： Go Fujisawa , Oliver C. Mullins , Chengli Dong , Andrew Kurkjian
IPC分类号： E21B43/00 , G01V8/00
CPC分类号： G01N21/645 , E21B47/1015 , E21B49/005 , E21B49/08 , E21B2049/085 , G01N33/241 , G01N33/2882
摘要： Water-based mud filtrate concentration in a downhole fluid sample drawn from the borehole of an oil well is assessed. To measure water-based mud filtrate concentration, a water-based mud having a water-soluble fluorescent dye tracer is pumped into the borehole; sample fluid from a selected downhole location is pumped through a downhole flow line having a window; sample fluid flowing in an excitation region of the downhole flow line is illuminated through the window with fluorescence excitation light; and fluorescence emission from the excitation region is measured to produce a measured value. The measured value represents the fraction of water-based mud filtrate in the sample fluid. A calibration value is determined representing 100% water-based mud filtrate. A method for validating a sample of connate water as having an acceptably low WBM filtrate contamination tests for validation downhole, in real time. Each measured value of the series of measured values is compared with a predetermined fraction of a calibration value. Samples that are validated may be captured and brought to the surface for analysis. A method using the time series data and a predetermined fraction of the calibration value calculates a predicted flushing time to completion.
摘要翻译：评估从油井钻孔抽取的井下流体样品中的水基泥浆滤液浓度。为了测量水泥泥滤液浓度，将具有水溶性荧光染料示踪剂的水性泥浆泵入井眼; 来自所选择的井下位置的样品流体被泵送通过具有窗口的井下流动管线; 在井下流动线的激发区域流动的样品流体通过窗口用荧光激发光照射; 并且测量来自激发区域的荧光发射以产生测量值。测量值表示样品液中水基泥浆滤液的分数。确定代表100％水基泥浆滤液的校准值。一种用于验证原生水样品具有可接受的低WBM滤液污染测试的方法，用于实时验证井下。将一系列测量值的每个测量值与校准值的预定分数进行比较。经过验证的样品可能被捕获并带到表面进行分析。使用时间序列数据和校准值的预定分数的方法计算完成的预测冲洗时间。

8. 发明申请

US20060155474A1 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof 有权
标题翻译：导出井下流体流体特性的系统和方法及其不确定性
公开(公告)号：US20060155474A1
公开(公告)日：2006-07-13
申请号：US11132545
申请日：2005-05-19
申请人： Lalitha Venkataramanan , Go Fujisawa , Bhavani Raghuraman , Oliver Mullins , Andrew Carnegie , Ricardo Vasques , Chengli Dong , Kai Hsu , Michael O'Keefe , Henri-Pierre Valero
发明人： Lalitha Venkataramanan , Go Fujisawa , Bhavani Raghuraman , Oliver Mullins , Andrew Carnegie , Ricardo Vasques , Chengli Dong , Kai Hsu , Michael O'Keefe , Henri-Pierre Valero
IPC分类号： G06F19/00
CPC分类号： E21B49/00
摘要： Methods and systems are provided for downhole analysis of formation fluids by deriving fluid properties and associated uncertainty in the predicted fluid properties based on downhole data, and generating answer products of interest based on differences in the fluid properties. Measured data are used to compute levels of contamination in downhole fluids using an oil-base mud contamination monitoring (OCM) algorithm. Fluid properties are predicted for the fluids and uncertainties in predicted fluid properties are derived. A statistical framework is provided for comparing the fluids to generate, in real-time, robust answer products relating to the formation fluids and reservoirs thereof. Systematic errors in measured data are reduced or eliminated by preferred sampling procedures.
摘要翻译：提供了方法和系统，用于通过基于井下数据导出预测流体特性的流体性质和相关不确定性，并基于流体性质的差异产生感兴趣的产品，从而对地层流体进行井下分析。测量数据用于使用油基泥浆污染监测（OCM）算法计算井下流体中的污染水平。预测流体的流体性质，并推导出预测的流体性质的不确定性。提供了一种统计框架，用于比较流体，实时地产生与地层流体及其储层相关的鲁棒答案产品。通过优选的采样程序减少或消除了测量数据中的系统误差。

9. 发明授权

US07305306B2 System and methods of deriving fluid properties of downhole fluids and uncertainty thereof 有权
标题翻译：导出井下流体流体特性的系统和方法及其不确定性
公开(公告)号：US07305306B2
公开(公告)日：2007-12-04
申请号：US11132545
申请日：2005-05-19
申请人： Lalitha Venkataramanan , Go Fujisawa , Bhavani Raghuraman , Oliver Mullins , Andrew Carnegie , Ricardo Vasques , Chengli Dong , Kai Hsu , Michael O'Keefe , Henri-Pierre Valero
发明人： Lalitha Venkataramanan , Go Fujisawa , Bhavani Raghuraman , Oliver Mullins , Andrew Carnegie , Ricardo Vasques , Chengli Dong , Kai Hsu , Michael O'Keefe , Henri-Pierre Valero
IPC分类号： G01V8/02
CPC分类号： E21B49/00
摘要： Methods and systems are provided for downhole analysis of formation fluids by deriving fluid properties and associated uncertainty in the predicted fluid properties based on downhole data, and generating answer products of interest based on differences in the fluid properties. Measured data are used to compute levels of contamination in downhole fluids using an oil-base mud contamination monitoring (OCM) algorithm. Fluid properties are predicted for the fluids and uncertainties in predicted fluid properties are derived. A statistical framework is provided for comparing the fluids to generate, in real-time, robust answer products relating to the formation fluids and reservoirs thereof. Systematic errors in measured data are reduced or eliminated by preferred sampling procedures.
摘要翻译：提供了方法和系统，用于通过基于井下数据导出预测流体特性的流体性质和相关不确定性，并基于流体性质的差异产生感兴趣的产品，从而对地层流体进行井下分析。测量数据用于使用油基泥浆污染监测（OCM）算法计算井下流体中的污染水平。预测流体的流体性质，并推导出预测的流体性质的不确定性。提供了一种统计框架，用于比较流体，实时地产生与地层流体及其储层相关的鲁棒答案产品。通过优选的采样程序减少或消除了测量数据中的系统误差。

10. 发明授权

US07336356B2 Method and apparatus for downhole spectral analysis of fluids 有权
标题翻译：液体井下光谱分析方法和装置
公开(公告)号：US07336356B2
公开(公告)日：2008-02-26
申请号：US11307170
申请日：2006-01-26
申请人： Stephane Vannuffelen , Kentaro Indo , Go Fujisawa , Toru Terabayashi , Tsutomu Yamate
发明人： Stephane Vannuffelen , Kentaro Indo , Go Fujisawa , Toru Terabayashi , Tsutomu Yamate
IPC分类号： G01J3/28 , G01N21/00 , G01V5/08
CPC分类号： G01J3/36 , G01J3/0218 , G01J3/0232 , G01J3/0294 , G01J3/10 , G01J3/42 , G01N21/274 , G01N21/31 , G01N2021/317 , G01N2201/08
摘要： A downhole fluid analysis system comprises an input light signal that is directed through a fluid sample housed in a sample cell. The input light signal may originate from a plurality of light sources. A light signal output from the sample cell is then routed to two or more spectrometers for measurement of the represented wavelengths in the output light signal. The output of the spectrometers is then compared to known values for hydrocarbons typically encountered downhole. This provides insight into the composition of the sample fluid. Additionally, the input light can be routed directly to the two or more spectrometers to be used in calibration of the system in the high temperature and noise environment downhole.
摘要翻译：井下流体分析系统包括被引导通过容纳在样品池中的流体样品的输入光信号。输入光信号可以来自多个光源。然后将从样品池输出的光信号路由到两个或更多个光谱仪，以测量输出光信号中所表示的波长。然后将光谱仪的输出与通常在井下遇到的烃的已知值进行比较。这提供了对样品流体的组成的了解。此外，输入光可以直接路由到两个或更多个光谱仪，以在井下的高温和噪声环境中校准系统。

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