公开(公告)号：US07586087B2

公开(公告)日：2009-09-08

申请号：US11738156

申请日：2007-04-20

申请人： Chengli Dong ,  Peter S. Hegeman

发明人： Chengli Dong ,  Peter S. Hegeman

IPC分类号： G01V8/00

CPC分类号： E21B47/102

摘要： Methods and apparatus to characterize stock-tank oil during fluid composition analysis are disclosed. A disclosed example method to characterize a fluid associated with an underground geological formation comprises obtaining a sample of the fluid associated with the underground geological formation, determining, in a borehole associated with the underground geological formation, a stock-tank oil type for the sample of the fluid associated with the underground geological formation, and determining a property of the fluid associated with the underground geological formation based on the stock-tank oil type.

摘要翻译： 公开了在流体组成分析期间表征储罐油的方法和装置。 用于表征与地下地质构造相关联的流体的公开的示例性方法包括获得与地下地质构造相关联的流体的样本，在与地下地质构造相关联的钻孔中确定样品的储罐油类型 与地下地质构造相关的流体，以及基于储罐油类型确定与地下地质层相关的流体的性质。

公开(公告)号：US08528396B2

公开(公告)日：2013-09-10

申请号：US12363835

申请日：2009-02-02

申请人： Xu Wu ,  Tsutomu Yamate ,  Toru Terabayashi ,  Ricardo Vasques ,  Chengli Dong ,  Peter S. Hegeman

发明人： Xu Wu ,  Tsutomu Yamate ,  Toru Terabayashi ,  Ricardo Vasques ,  Chengli Dong ,  Peter S. Hegeman

IPC分类号： E21B49/08

CPC分类号： E21B49/082

摘要： Example methods and apparatus to detect phase separation in downhole fluid sampling operations are disclosed. An example method to detect a phase separation condition of a fluid from a subterranean involves obtaining a sample of the fluid, measuring a first characteristic value of the sample, measuring a second characteristic value of the sample and comparing the first characteristic value to a first reference value associated with a single-phase condition of the fluid to generate a corresponding first comparison result. The example method then compares the second characteristic value to a second reference value associated with the single-phase condition of the fluid to generate a corresponding second comparison result and detects the phase separation condition of the fluid based on the first and second comparison results.

摘要翻译： 公开了用于检测井下液体取样操作中的相分离的示例性方法和装置。 用于检测来自地下的流体的相分离条件的示例性方法包括获得流体样品，测量样品的第一特征值，测量样品的第二特征值，并将第一特征值与第一参考值进行比较 值与流体的单相条件相关联以产生相应的第一比较结果。 该示例方法然后将第二特征值与与流体的单相条件相关联的第二参考值进行比较，以产生相应的第二比较结果，并基于第一和第二比较结果检测流体的相分离条件。

公开(公告)号：US07526953B2

公开(公告)日：2009-05-05

申请号：US11615381

申请日：2006-12-22

申请人： Anthony R. H. Goodwin ,  Pete Hegeman ,  Kai Hsu ,  Chengli Dong

发明人： Anthony R. H. Goodwin ,  Pete Hegeman ,  Kai Hsu ,  Chengli Dong

IPC分类号： E21B49/08

CPC分类号： E21B47/10 ,  E21B49/08 ,  E21B49/10 ,  G01N1/12 ,  G01N7/00 ,  G01N9/36 ,  G01N25/04 ,  G01N33/2823

摘要： Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. An example method to characterize a fluid associated with an underground geological formation obtains a sample of the fluid associated with the underground geological formation. The example method measures, in a borehole associated with the underground geological formation, a chemical composition and a thermophysical property of the sample of the fluid. The example method selects a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property and adjusts a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model. The example method then determines a property of the fluid associated with the underground geological formation based on the adjusted mathematical model.

摘要翻译： 公开了用于研究由钻孔穿过的含烃地质地层的方法和装置。 用于表征与地下地质构造有关的流体的示例性方法获得与地下地质构造相关联的流体的样本。 示例性方法在与地下地质构造相关的钻孔中测量流体样品的化学成分和热物理性质。 该示例性方法基于化学组成或热物理性质中的至少一个选择数学模型来表示流体的样本，并且基于化学组成或热物理性质中的至少一个来调整数学模型的参数以产生 一个调整后的数学模型。 然后，示例性方法基于经调整的数学模型确定与地下地质构造相关联的流体的性质。

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。

公开(公告)号：US20070119244A1

公开(公告)日：2007-05-31

申请号：US11615381

申请日：2006-12-22

申请人： Anthony Goodwin ,  Pete Hegeman ,  Kai Hsu ,  Chengli Dong

发明人： Anthony Goodwin ,  Pete Hegeman ,  Kai Hsu ,  Chengli Dong

IPC分类号： E21B49/08

CPC分类号： E21B47/10 ,  E21B49/08 ,  E21B49/10 ,  G01N1/12 ,  G01N7/00 ,  G01N9/36 ,  G01N25/04 ,  G01N33/2823

摘要： Methods and apparatus for investigating a hydrocarbon bearing geological formation traversed by a borehole are disclosed. An example method to characterize a fluid associated with an underground geological formation obtains a sample of the fluid associated with the underground geological formation. The example method measures, in a borehole associated with the underground geological formation, a chemical composition and a thermophysical property of the sample of the fluid. The example method selects a mathematical model to represent the sample of the fluid based on at least one of the chemical composition or the thermophysical property and adjusts a parameter of the mathematical model based on at least one of the chemical composition or the thermophysical property to generate an adjusted mathematical model. The example method then determines a property of the fluid associated with the underground geological formation based on the adjusted mathematical model.

摘要翻译： 公开了用于研究由钻孔穿过的含烃地质地层的方法和装置。 用于表征与地下地质构造有关的流体的示例性方法获得与地下地质构造相关联的流体的样本。 示例性方法在与地下地质构造相关的钻孔中测量流体样品的化学成分和热物理性质。 该示例性方法基于化学组成或热物理性质中的至少一个选择数学模型来表示流体的样本，并且基于化学组成或热物理性质中的至少一个来调整数学模型的参数以产生 一个调整后的数学模型。 然后，示例性方法基于经调整的数学模型确定与地下地质构造相关联的流体的性质。

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。

公开(公告)号：US07966273B2

公开(公告)日：2011-06-21

申请号：US12098526

申请日：2008-04-07

申请人： Peter Hegeman ,  Chengli Dong ,  Charles Woodburn ,  Graham Birkett ,  Nikos Varotsis ,  Vassilis Gaganis

发明人： Peter Hegeman ,  Chengli Dong ,  Charles Woodburn ,  Graham Birkett ,  Nikos Varotsis ,  Vassilis Gaganis

IPC分类号： G06N3/08 ,  E21B49/08 ,  G01V3/00

CPC分类号： G06N3/02 ,  E21B49/10

摘要： Apparatus and methods to perform downhole fluid analysis using an artificial neural network are disclosed. A disclosed example method involves obtaining a first formation fluid property value of a formation fluid sample from a downhole fluid analysis process. The first formation fluid property value is provided to an artificial neural network, and a second formation fluid property value of the formation fluid sample is generated by means of the artificial neural network.

摘要翻译： 公开了使用人造神经网络进行井下流体分析的装置和方法。 所公开的示例性方法包括从井下流体分析过程获得地层流体样品的第一地层流体特性值。 将第一地层流体属性值提供给人造神经网络，并且通过人造神经网络产生地层流体样本的第二地层流体特性值。

公开(公告)号：US20090030858A1

公开(公告)日：2009-01-29

申请号：US12098526

申请日：2008-04-07

申请人： Peter Hegeman ,  Chengli Dong ,  Charles Woodburn ,  Graham Birkett ,  Nikos Varotsis ,  Vassilis Gaganis

发明人： Peter Hegeman ,  Chengli Dong ,  Charles Woodburn ,  Graham Birkett ,  Nikos Varotsis ,  Vassilis Gaganis

IPC分类号： G06N3/08 ,  E21B49/08

CPC分类号： G06N3/02 ,  E21B49/10

摘要： Apparatus and methods to perform downhole fluid analysis using an artificial neural network are disclosed. A disclosed example method involves obtaining a first formation fluid property value of a formation fluid sample from a downhole fluid analysis process. The first formation fluid property value is provided to an artificial neural network, and a second formation fluid property value of the formation fluid sample is generated by means of the artificial neural network.

摘要翻译： 公开了使用人造神经网络进行井下流体分析的装置和方法。 所公开的示例性方法包括从井下流体分析过程获得地层流体样品的第一地层流体特性值。 将第一地层流体属性值提供给人造神经网络，并且通过人造神经网络产生地层流体样本的第二地层流体特性值。

公开(公告)号：US20050067562A1

公开(公告)日：2005-03-31

申请号：US10670615

申请日：2003-09-25

申请人： Chengli Dong ,  Soraya Betancourt ,  Go Fujisawa ,  Oliver Mullins ,  James Dunlap

发明人： Chengli Dong ,  Soraya Betancourt ,  Go Fujisawa ,  Oliver Mullins ,  James Dunlap

IPC分类号： G01V8/02 ,  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。

公开(公告)号：US20060243033A1

公开(公告)日：2006-11-02

申请号：US10908161

申请日：2005-04-29

申请人： Darcy Freemark ,  Craig Borman ,  Ahmed Hammami ,  Moin Muhammed ,  Scott Jacobs ,  Jonathan Brown ,  Andrew Kurkjian ,  Chengli Dong ,  Brindesh Dhruva ,  Kenneth Havlinek ,  Anthony Goodwin

发明人： Darcy Freemark ,  Craig Borman ,  Ahmed Hammami ,  Moin Muhammed ,  Scott Jacobs ,  Jonathan Brown ,  Andrew Kurkjian ,  Chengli Dong ,  Brindesh Dhruva ,  Kenneth Havlinek ,  Anthony Goodwin

IPC分类号： G01N7/00

CPC分类号： E21B49/10

摘要： A fluid analysis assembly for analyzing a fluid the fluid analysis assembly includes a chamber, a fluid movement device, a pressurization assembly and at least one sensor. The chamber defines an evaluation cavity for receiving the fluid. The fluid movement device has a force medium applying force to the fluid to cause the fluid to move within the cavity. The pressurization assembly changes the pressure of the fluid in a continuous manner. The at least one sensor communicates with the fluid for sensing at least one parameter of the fluid while the pressure of the fluid is changing in the continuous manner.

摘要翻译： 用于分析流体的流体分析组件包括腔室，流体运动装置，加压组件和至少一个传感器。 腔室限定用于接收流体的评估腔。 流体移动装置具有向流体施加力以迫使流体在空腔内移动的力介质。 加压组件以连续的方式改变流体的压力。 所述至少一个传感器与流体通信，用于感测流体的至少一个参数，同时流体的压力以连续的方式变化。