公开(公告)号：US08612193B2

公开(公告)日：2013-12-17

申请号：US10442216

申请日：2003-05-20

申请人： Bhavani Raghuraman ,  Terizhandur S. Ramakrishnan ,  Kenneth E. Stephenson ,  Lalitha Venkataramanan ,  Jose Navarro

发明人： Bhavani Raghuraman ,  Terizhandur S. Ramakrishnan ,  Kenneth E. Stephenson ,  Lalitha Venkataramanan ,  Jose Navarro

IPC分类号： G06G7/48 ,  G01V1/40 ,  G01V3/00

CPC分类号： E21B43/00 ,  E21B47/00

摘要： In accordance with an embodiment of the present invention, a method of processing large volumes of data to allow for real-time reservoir management is disclosed, comprising: a) acquiring a first data series from a first reservoir sensor; b) establishing a set of criteria based on reservoir management objectives, sensor characteristics, sensor location, nature of the reservoir, and data storage optimization, etc.; c) identifying one or more subsets of the first data series meeting at least one of the criteria; and optionally d) generating one or more second data series based on at least one of the subsets. This methodology may be repeated for numerous reservoir sensors. This methodology allows for intelligent evaluation of sensor data by using carefully established criteria to intelligently select one or more subsets of data. In an alternative embodiment, sensor data from one or more sensors may be evaluated while processing data from a different sensor.

摘要翻译： 根据本发明的实施例，公开了一种处理大量数据以允许实时油藏管理的方法，包括：a）从第一油藏传感器获取第一数据序列; b）根据油藏管理目标，传感器特征，传感器位置，储层性质，数据存储优化等建立一套标准; c）识别符合所述标准中的至少一个的所述第一数据序列的一个或多个子集; 以及可选地d）基于所述子集中的至少一个生成一个或多个第二数据序列。 对于许多储层传感器可以重复该方法。 该方法允许通过使用仔细确定的标准智能地选择一个或多个数据子集来智能评估传感器数据。 在替代实施例中，可以在处理来自不同传感器的数据的同时评估来自一个或多个传感器的传感器数据。

公开(公告)号：US07674624B2

公开(公告)日：2010-03-09

申请号：US10454138

申请日：2003-06-04

申请人： Kenneth E. Stephenson ,  Lalitha Venkataramanan

发明人： Kenneth E. Stephenson ,  Lalitha Venkataramanan

IPC分类号： G01N33/24

CPC分类号： G01N33/241 ,  Y10T436/21

摘要： A preferred method for determining the flow fraction of a mixture of water, gas and oil in a hydrocarbon reservoir includes measuring pressure and density of the mixture over time, determining a function which approximates a relationship between the density and pressure measurements, calculating a derivative of the function over time, and determining flow fraction based, in part, on the derivative. Preferably, transient data points are eliminated and the remaining set of data points are weight averaged to improve signal to noise ratio. Bubble point pressure, bubble point density and molecular weight and density of the liquid portion of the mixture are also used in the determination.

摘要翻译： 用于确定烃储层中的水，气和油的混合物的流动分数的优选方法包括随时间测量混合物的压力和密度，确定近似密度和压力测量之间的关系的函数，计算 该函数随时间推移，并且部分地基于导数来确定流动分数。 优选地，消除瞬态数据点，并且剩余的数据点集合被权重平均以提高信噪比。 泡沫点压力，泡泡点密度和混合物液体部分的分子量和密度也用于测定。

公开(公告)号：US08587302B2

公开(公告)日：2013-11-19

申请号：US12717512

申请日：2010-03-04

申请人： Lalitha Venkataramanan ,  Tarek M. Habashy ,  Denise Freed ,  Ashok Belani

发明人： Lalitha Venkataramanan ,  Tarek M. Habashy ,  Denise Freed ,  Ashok Belani

IPC分类号： G01V3/00 ,  G01V1/48

CPC分类号： G01N24/081 ,  G01N11/16 ,  G01R33/448 ,  G01V3/14 ,  G01V3/32

摘要： Methods and related systems are described for estimating fluid or rock properties from NMR measurements. A modified pulse sequence is provided that can directly provide moments of relaxation-time or diffusion distributions. This pulse sequence can be adapted to the desired moment of relaxation-time or diffusion coefficient. The data from this pulse sequence provides direct estimates of fluid properties such as average chain length and viscosity of a hydrocarbon. In comparison to the uniformly-spaced pulse sequence, these pulse sequences are faster and have a lower error bar in computing the fluid properties.

摘要翻译： 描述了用于从NMR测量估计流体或岩石性质的方法和相关系统。 提供了可以直接提供弛豫时间或扩散分布的时刻的修改的脉冲序列。 该脉冲序列可以适应于所需的弛豫时间或扩散系数。 来自该脉冲序列的数据提供流体性质的直接估计，例如烃的平均链长和粘度。 与均匀间隔的脉冲序列相比，这些脉冲序列更快，在计算流体特性时具有较低的误差。

公开(公告)号：US20090173494A1

公开(公告)日：2009-07-09

申请号：US11874491

申请日：2007-10-18

申请人： Jeffrey A. Tarvin ,  Lalitha Venkataramanan ,  Thomas M. White ,  George A. Brown

发明人： Jeffrey A. Tarvin ,  Lalitha Venkataramanan ,  Thomas M. White ,  George A. Brown

IPC分类号： E21B43/12 ,  E21B47/00 ,  G06F19/00

CPC分类号： G01K11/32 ,  E21B47/065 ,  G01F1/6884

摘要： A technique is provided to determine a flow rate of a production fluid. The technique is utilized in a well having a gas lift system. Temperatures are measured along the well to create a temperature profile. The temperature profile is used to determine the flow rate of a produced fluid.

摘要翻译： 提供了一种确定生产流体的流速的技术。 该技术用于具有气举系统的井中。 沿着井测量温度以产生温度分布。 温度分布用于确定所产生的流体的流速。

公开(公告)号：US07398159B2

公开(公告)日：2008-07-08

申请号：US11207043

申请日：2005-08-18

申请人： Lalitha Venkataramanan ,  Oliver C. Mullins ,  Ricardo Reves Vasques

发明人： Lalitha Venkataramanan ,  Oliver C. Mullins ,  Ricardo Reves Vasques

IPC分类号： G01V9/00

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。

公开(公告)号：US20050033530A1

公开(公告)日：2005-02-10

申请号：US10911871

申请日：2004-08-05

申请人： Kenneth Stephenson ,  Lalitha Venkataramanan

发明人： Kenneth Stephenson ,  Lalitha Venkataramanan

IPC分类号： G01F1/44 ,  G01F25/00 ,  G01N33/28 ,  G06F19/00

CPC分类号： G01F1/44 ,  G01F25/0007 ,  G01N33/2823

摘要： A method for determining the bubble point pressure and the true flow rate of a fluid in a flow line of a flowing well is provided, wherein the method includes modifying fluid pressure in a predetermined region of the flow line, generating pressure data responsive to the flow line, obtaining apparent flow rate data responsive to the pressure data, examining the apparent flow rate data to identify a discontinuity in the apparent flow rate data and generating true flow rate data responsive to the discontinuity.

摘要翻译： 提供了一种用于确定流动井的流动线中的泡点压力和流体的真实流量的方法，其中该方法包括改变在流动管线的预定区域中的流体压力，产生响应流动的压力数据 响应于压力数据获得明显的流量数据，检查表观流速数据以识别表观流量数据中的不连续性，并响应于不连续性产生真实的流量数据。

公开(公告)号：US10732314B2

公开(公告)日：2020-08-04

申请号：US13333232

申请日：2011-12-21

申请人： Lalitha Venkataramanan ,  Tarek M. Habashy ,  Fred K. Gruber ,  Denise E. Freed

发明人： Lalitha Venkataramanan ,  Tarek M. Habashy ,  Fred K. Gruber ,  Denise E. Freed

IPC分类号： G01V3/175 ,  G01R33/50 ,  G01N24/08 ,  G01V1/48 ,  G01V3/14 ,  G01V3/32

摘要： Apparatus and method of characterizing a subterranean formation including observing a formation using nuclear magnetic resonance measurements, calculating an answer product by computing an integral transform on the indications in measurement-domain, and using answer products to estimate a property of the formation. Apparatus and a method for characterizing a subterranean formation including collecting NMR data of a formation, calculating an answer product comprising the data, wherein the calculating comprises a formula K ⁡ ( x ) ≡ ∫ 0 ∞ ⁢ k ⁡ ( t ) ⁢ e - t / x ⁢ dt . and estimating a property of the formation using the answer product.

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：US06597171B2

公开(公告)日：2003-07-22

申请号：US09909665

申请日：2001-07-20

申请人： Martin D. Hurlimann ,  Olivier J. Terneaud ,  Denise Freed ,  Ulrich Scheven ,  Lalitha Venkataramanan

发明人： Martin D. Hurlimann ,  Olivier J. Terneaud ,  Denise Freed ,  Ulrich Scheven ,  Lalitha Venkataramanan

IPC分类号： G01V300

CPC分类号： G01N24/081 ,  G01V3/32

摘要： Nuclear magnetic resonance methods for extracting information about a fluid in a rock are described. A system of nuclear spins in the fluid are prepared in a driven equilibrium, and a series of magnetic resonance signals generated from the fluid. The series of magnetic resonance signals is detected and analyzed to extract information about the fluid in the rock.

公开(公告)号：US20080135237A1

公开(公告)日：2008-06-12

申请号：US11753863

申请日：2007-05-25

申请人： Francois Dubost ,  Oliver C. Mullins ,  Lalitha Venkataramanan ,  Christopher Harrison ,  Neil Bostrom ,  Robert Kleinberg

发明人： Francois Dubost ,  Oliver C. Mullins ,  Lalitha Venkataramanan ,  Christopher Harrison ,  Neil Bostrom ,  Robert Kleinberg

IPC分类号： E21B47/06

CPC分类号： E21B47/10 ,  E21B41/0064 ,  Y02C10/14

摘要： A method of monitoring a nonhydrocarbon and nonaqueous fluid injected into the earth's subsurface through a first wellbore that involves positioning a fluid analysis tool within a second wellbore and determining the presence of the injected nonhydrocarbon and nonaqueous fluid by making a measurement downhole on the injected nonhydrocarbon and nonaqueous fluid using the fluid analysis tool. Also a related method of enhancing hydrocarbon production from a subsurface area having first and second wellbores that involves injecting a nonhydrocarbon and nonaqueous fluid into the subsurface through the first wellbore, positioning a fluid analysis tool within the second wellbore, and determining the presence of the injected nonhydrocarbon and nonaqueous fluid by making a measurement downhole on the injected nonhydrocarbon and nonaqueous fluid using the fluid analysis tool. Further, a related method of determining the relative or absolute quantity of a nonhydrocarbon and nonaqueous fluid injected into the earth's subsurface through a first wellbore that involves positioning a fluid analysis tool within a second wellbore, measuring the near-infrared spectroscopy signature of fluid downhole using the fluid analysis tool, measuring the downhole temperature and pressure using the fluid analysis tool, and estimating a relative or absolute quantity of the injected nonhydrocarbon and nonaqueous fluid within said downhole fluid using the measured near-infrared spectroscopy signature, the temperature, and the pressure to estimate a partial pressure of hydrocarbon constituents of the downhole fluid.

摘要翻译： 一种通过第一井筒监测注入到地球表层内的非烃和非水液体的方法，该第一井筒涉及将流体分析工具定位在第二井筒内，并且通过在注入的非烃上进行测量并确定注入的非烃类和非水性流体的存在，以及 非流体使用流体分析工具。 还有一种从具有第一和第二井眼的地下区域提高烃生产的相关方法，其包括通过第一井孔将非烃和非水流体注入到地下，将流体分析工具定位在第二井眼内，并确定注入的 通过使用流体分析工具在注入的非烃和非水溶液上进行井下测量来测量非烃和非水的流体。 此外，一种确定通过第一井筒注入地球表层内的非烃和非水流体的相对或绝对量的相关方法，其涉及将流体分析工具定位在第二井筒内，使用以下方法测量井下流体的近红外光谱特征： 流体分析工具，使用流体分析工具测量井下温度和压力，并且使用所测量的近红外光谱特征，温度和压力估计所述井下流体内注入的非烃和非水性流体的相对或绝对量 以估计井下流体的烃组分的分压。