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    FACILITATING OILFIELD DEVELOPMENT WITH DOWNHOLE FLUID ANALYSIS
    1.
    发明申请
    FACILITATING OILFIELD DEVELOPMENT WITH DOWNHOLE FLUID ANALYSIS 审中-公开
    利用井下流体分析实现油田开发

    公开(公告)号：US20080040086A1

    公开(公告)日：2008-02-14

    申请号：US11832290

    申请日：2007-08-01

    申请人： Soraya Betancourt ,  Oliver Mullins ,  Rimas Gaizutis ,  ChengGang Xian ,  Peter Kaufman ,  Francois Dubost ,  Lalitha Venkataramanan

    发明人： Soraya Betancourt ,  Oliver Mullins ,  Rimas Gaizutis ,  ChengGang Xian ,  Peter Kaufman ,  Francois Dubost ,  Lalitha Venkataramanan

    IPC分类号： G01V9/00 ,  G06F19/00 ,  G06G7/48

    CPC分类号： E21B49/00 ,  E21B49/088

    摘要： Formation fluid data based on measurements taken downhole under natural conditions is utilized to help identify reservoir compartments. A geological model of the reservoir including expected pressure and temperature conditions is integrated with a predicted fluid model fitted to measured composition and PVT data on reservoir fluid samples or representative analog. Synthetic downhole fluid analysis (DFA) logs created from the predictive fluid model can be displayed along the proposed borehole trajectory by geological modeling software prior to data acquisition. During a downhole fluid sampling operation, actual measurements can be displayed next to the predicted logs. If agreement exists between the predicted and measured fluid samples, the geologic and fluid models are validated. However, if there is a discrepancy between the predicted and measured fluid samples, the geological model and the fluid model need to be re-analyzed, e.g., to identify reservoir fluid compartments. A quantitative comparative analysis of the sampled fluids can be performed against other samples in the same borehole or in different boreholes in the field or region to calculate the statistical similarity of the fluids, and thus the possible connectivity between two or more reservoir regions.

    摘要翻译： 基于在自然条件下井下测量的地层流体数据用于帮助识别储层隔室。 包括预期压力和温度条件在内的储层的地质模型与预测的流体模型相结合，该流体模型适用于储层流体样品或代表性模拟物的测量组成和PVT数据。 在数据采集之前，可以通过地质建模软件沿预期钻孔轨迹显示从预测流体模型创建的合成井下流体分析（DFA）日志。 在井下流体采样操作期间，可以在预测的日志旁边显示实际测量值。 如果预测和测量的流体样品之间存在一致性，则对地质和流体模型进行验证。 然而，如果预测和测量的流体样本之间存在差异，则需要重新分析地质模型和流体模型，例如识别储层流体隔室。 可以对相同钻孔中的其他样品或场或区域中的不同钻孔中的其他样品进行取样流体的定量比较分析，以计算流体的统计学相似度，从而计算两个或多个储层区域之间可能的连通性。

    Method for integrating reservoir charge modeling and downhole fluid analysis
    2.
    发明授权
    Method for integrating reservoir charge modeling and downhole fluid analysis 有权
    积分储层模拟和井下流体分析的方法

    公开(公告)号：US08165817B2

    公开(公告)日：2012-04-24

    申请号：US12400016

    申请日：2009-03-09

    申请人： Soraya Betancourt ,  Armin Kauerauf ,  Oliver Mullins

    发明人： Soraya Betancourt ,  Armin Kauerauf ,  Oliver Mullins

    IPC分类号： G01V1/40 ,  G06G7/50 ,  E21B49/02

    CPC分类号： G01V11/00 ,  G01V2210/6163 ,  G01V2210/6165

    摘要： A method for estimating properties of fluids in rock formations at selected locations within a geologic basin includes generating an initial model of the basin. The model includes as output spatial distribution of a rock formation mineral composition, rock formation porosity and composition of fluids in the rock formation porosity. An initial estimate of fluid composition is generated for a rock formation, and a sample of fluid is extracted from pore spaces of the rock formation. Composition of the fluid sample is analyzed from within, and the initial model of the basin is adjusted to substantially match the analyzed fluid composition. The adjusted model is used to generate an initial estimate of fluid composition.

    摘要翻译： 在地质盆地内选定位置估算岩层中流体属性的方法包括生成盆地的初始模型。 该模型包括岩层矿物组成的输出空间分布，岩石孔隙度和岩石孔隙度中流体的组成。 对于岩层产生流体组成的初始估计，并且从岩层的孔隙中提取流体样本。 从内部分析流体样品的组成，并将盆的初始模型调整为与分析的流体组成基本一致。 调整后的模型用于产生流体组成的初始估计。

    METHOD FOR INTEGRATING RESERVOIR CHARGE MODELING AND DOWNHOLE FLUID ANALYSIS
    5.
    发明申请
    METHOD FOR INTEGRATING RESERVOIR CHARGE MODELING AND DOWNHOLE FLUID ANALYSIS 有权
    用于集成储层充电建模和井下流体分析的方法

    公开(公告)号：US20100228485A1

    公开(公告)日：2010-09-09

    申请号：US12400016

    申请日：2009-03-09

    申请人： Soraya Betancourt ,  Armin I. Kauerauf ,  Oliver Mullins

    发明人： Soraya Betancourt ,  Armin I. Kauerauf ,  Oliver Mullins

    IPC分类号： G01V9/00 ,  G06F19/00

    CPC分类号： G01V11/00 ,  G01V2210/6163 ,  G01V2210/6165

    摘要： A method for estimating properties of fluids in rock formations at selected locations within a geologic basin includes generating an initial model of the basin. The model includes as output spatial distribution of at least rock formation mineral composition, rock formation porosity and composition of fluids in the rock formation porosity. An initial estimate of fluid composition is generated for at least one rock formation at at least one selected location within the basin. A sample of fluid is extracted from pore spaces of the at least one rock formation from within a wellbore drilled therethrough. Composition of the fluid sample is analyzed from within the wellbore. The initial model of the basin is adjusted such that model predictions substantially match the analyzed fluid composition. The adjusted model is used to generate an initial estimate of fluid composition at at least one additional geodetic location within the basin.

    摘要翻译： 在地质盆地内选定位置估算岩层中流体属性的方法包括生成盆地的初始模型。 该模型包括至少岩层矿物组成的输出空间分布，岩石孔隙度和岩石孔隙度中流体的组成。 对盆内至少一个选定位置的至少一个岩层产生流体组成的初始估计。 从穿过其中的井筒内的至少一个岩层的孔隙中提取流体样品。 从井眼内分析流体样品的组成。 调整盆地的初始模型，使得模型预测与分析的流体组成基本匹配。 调整后的模型用于在盆地内的至少一个附加大地测量位置产生流体组成的初始估计。

    Determining phase transition pressure of downhole retrograde condensate
    6.
    发明申请
    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：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。

    System and methods of deriving differential fluid properties of downhole fluids
    9.
    发明申请
    System and methods of deriving differential fluid properties of downhole fluids 有权
    导出井下流体的差分流体性质的系统和方法

    公开(公告)号：US20060155472A1

    公开(公告)日：2006-07-13

    申请号：US11207043

    申请日：2005-08-18

    申请人： Lalitha Venkataramanan ,  Oliver Mullins ,  Ricardo Vasques

    发明人： Lalitha Venkataramanan ,  Oliver Mullins ,  Ricardo Vasques

    IPC分类号： G06F19/00

    CPC分类号： E21B49/005 ,  E21B49/00

    摘要： Methods and systems are provided for downhole analysis of formation fluids by deriving differential fluid properties and associated uncertainty in the predicted fluid properties based on downhole data less sensitive to systematic errors in measurements, and generating answer products of interest based on the differences in the fluid properties. Measured data are used to compute levels of contamination in downhole fluids using, for example, 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 robust, real-time 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，用于通过基于对测量中的系统误差不太敏感的井下数据，通过基于流体性质的差异来产生感兴趣的答案产品，通过导出差分流体性质和预测流体特性中的相关不确定性来进行井下分析 。 测量数据用于使用例如油基泥浆污染监测（OCM）算法来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，用于比较流体以产生与其地层流体及其储层相关的鲁棒的实时回答产品。 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。