公开(公告)号：US08307704B2

公开(公告)日：2012-11-13

申请号：US12641692

申请日：2009-12-18

申请人： Daniel T. Georgi ,  Larry M. Hall ,  Baoyan Li

发明人： Daniel T. Georgi ,  Larry M. Hall ,  Baoyan Li

IPC分类号： E21B49/02

CPC分类号： G01V9/00 ,  E21B25/00 ,  E21B47/10 ,  G01N33/24

摘要： An apparatus for use in a wellbore may include a tool having a first section configured to receive a core and a second section configured to collect a gas escaping from the core. The apparatus may also include a sensor associated to provide signals relating to a property of gas. In one aspect, the second section may be removable and may be pressurized. The apparatus may also include a recorder that records data representative of the signals received from the sensor. The recorder may record data while the tool is retrieved from the wellbore. A method for estimating a parameter of interest of a formation includes retrieving a core from the formation, collecting a gas escaping from the core as the core is retrieved to the surface, and measuring at least one property of gas while the core is retrieved to the surface.

摘要翻译： 用于井眼的装置可以包括具有构造成容纳芯的第一部分和被配置为收集从芯排出的气体的第二部分的工具。 该装置还可以包括与提供与气体性质有关的信号的传感器。 在一个方面，第二部分可以是可移除的并且可以被加压。 该装置还可以包括记录表示从传感器接收的信号的数据的记录器。 记录仪可以在从井眼检索工具时记录数据。 一种用于估计地层感兴趣的参数的方法包括：从地层取回岩心;当核心被取回到地面时收集从核心排出的气体;以及在核心被取回到地面时测量气体的至少一个属性 表面。

公开(公告)号：US07826050B2

公开(公告)日：2010-11-02

申请号：US11850434

申请日：2007-09-05

申请人： Rocco DiFoggio ,  Paul A. Bergren ,  Francisco Galvan-Sanchez ,  Daniel T. Georgi

发明人： Rocco DiFoggio ,  Paul A. Bergren ,  Francisco Galvan-Sanchez ,  Daniel T. Georgi

IPC分类号： G01N21/00

CPC分类号： G01N21/0303 ,  G01N2021/0307 ,  G02B2207/117

摘要： A method is disclosed for changing an optical path length through a fluid downhole, comprising interspersing an optically transmissive member into a first optical path through the fluid, thereby creating a second shorter optical path through the fluid. In another embodiment, the method further comprises measuring an intensity of light, I1 transmitted through the first optical path; measuring an intensity of light, I2 transmitted through the second optical path; and estimating an optical property for the second optical path from the ratio, I1/I2. A system is disclosed for changing an optical path length through a fluid downhole, comprising a fluid passage between two optically transmissive windows for the fluid downhole, the fluid passage having a first optical path through the fluid; and an optically transmissive member for insertion into the first optical path, thereby creating a second shorter optical path through the fluid.

摘要翻译： 公开了一种用于通过井下流体改变光路长度的方法，其包括将透光构件分散到通过流体的第一光路中，从而产生通过流体的第二较短光路。 在另一个实施例中，该方法还包括测量通过第一光路传输的光的强度; 测量通过第二光路传输的光的强度; 并从该比率I1 / I2估计第二光路的光学特性。 公开了一种用于通过井下流体改变光路长度的系统，包括用于流体井下的两个光学透射窗之间的流体通道，流体通道具有穿过流体的第一光路; 以及用于插入到第一光路中的透光构件，从而产生通过流体的第二较短光路。

公开(公告)号：US07825659B2

公开(公告)日：2010-11-02

申请号：US12017284

申请日：2008-01-21

申请人： Daniel T. Georgi ,  Mikhail Gladkikh ,  Songhua Chen

发明人： Daniel T. Georgi ,  Mikhail Gladkikh ,  Songhua Chen

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3808 ,  G01R33/448

摘要： The grain size of a pore-scale geometric model of a clastic earth formation are adjusted so that the NMR relaxation time distribution output of the model matches a measured NMR distribution. Fluid drainage and imbibing can be simulated. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

摘要翻译： 调整碎屑土地层的孔隙尺度几何模型的晶粒尺寸，使得模型的NMR弛豫时间分布输出与测量的NMR分布相匹配。 可以模拟流体排水和吸水。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

公开(公告)号：US20100213943A1

公开(公告)日：2010-08-26

申请号：US12710438

申请日：2010-02-23

申请人： Daniel T. Georgi ,  Gregory B. Itskovich ,  Michael B. Rabinovich ,  Leonty A. Tabarovsky

发明人： Daniel T. Georgi ,  Gregory B. Itskovich ,  Michael B. Rabinovich ,  Leonty A. Tabarovsky

IPC分类号： G01V3/18

CPC分类号： G01V3/28 ,  G01V11/00 ,  G01V2210/6163 ,  G01V2210/6167

摘要： A method for estimating a property of a portion of an earth formation ahead of a borehole penetrating the formation, the method includes: conveying a logging tool through the borehole; receiving one or more first signals from a previous depth of the logging tool; constructing a model of the earth formation using the one or more first signals; predicting one or more second signals from the portion of the earth formation ahead of the borehole using the model; receiving one or more third signals from the portion of the earth formation ahead of the borehole; calculating a difference between the one or more third signals and the one or more second signals; and estimating the property from the difference.

摘要翻译： 一种用于估计穿过地层的井眼之前的地层的一部分的性质的方法，所述方法包括：将测井工具传送通过所述钻孔; 从测井工具的先前深度接收一个或多个第一信号; 使用所述一个或多个第一信号构造地层的模型; 使用该模型预测来自钻孔前方的地层部分的一个或多个第二信号; 从钻孔前面的地层部分接收一个或多个第三信号; 计算所述一个或多个第三信号与所述一个或多个第二信号之间的差; 并从差异估算属性。

公开(公告)号：US07657375B2

公开(公告)日：2010-02-02

申请号：US11740376

申请日：2007-04-26

申请人： Tsili Wang ,  Alexandre N. Bespalov ,  Bill H. Corley ,  Daniel T. Georgi ,  Michael B. Rabinovich

发明人： Tsili Wang ,  Alexandre N. Bespalov ,  Bill H. Corley ,  Daniel T. Georgi ,  Michael B. Rabinovich

IPC分类号： G01V1/40

CPC分类号： G01V3/28 ,  E21B47/026

摘要： A method, apparatus and computer-readable medium for evaluating an earth formation includes making measurements with a logging tool having a first depth of investigation in a borehole in the earth formation. A first dip of the formation is estimated using multi-component measurements. The estimated dip is compared with a second dip measurement in the borehole. The results of the comparison are stored on a tangible medium.

摘要翻译： 用于评估地层的方法，装置和计算机可读介质包括使用在地层中的钻孔中具有第一深度调查的测井工具进行测量。 使用多组分测量估计地层的第一次沉降。 将估计的倾角与钻孔中的第二次倾斜测量进行比较。 比较结果存储在有形介质上。

公开(公告)号：US07448262B2

公开(公告)日：2008-11-11

申请号：US11203316

申请日：2005-08-12

申请人： James J. Sheng ,  Daniel T. Georgi

发明人： James J. Sheng ,  Daniel T. Georgi

IPC分类号： E21B47/00

CPC分类号： E21B49/008 ,  G01N15/0826

摘要： In one method, the permeabilities are obtained by correcting the geometric factor derived from combining the FRA analysis and buildup analysis. In a second method, the permeabilities are obtained by combining the spherical permeability estimated from buildup analysis and the geometric skin factor obtained from history matching the probe-pressure data. In other methods, horizontal and vertical permeabilities are determined by analysis of pressure drawdown made with a single probe of circular aperture in a deviated borehole at two different walls of the borehole.

摘要翻译： 在一种方法中，通过校正通过组合FRA分析和累积分析得到的几何因子来获得渗透性。 在第二种方法中，通过组合从积累分析估计的球形磁导率和从与探针压力数据匹配的历史获得的几何外观因子来获得渗透性。 在其他方法中，水平和垂直渗透率通过分析在钻孔的两个不同壁处的偏斜钻孔中的圆形孔的单个探针进行的压力下降来确定。

公开(公告)号：US07356413B2

公开(公告)日：2008-04-08

申请号：US11146886

申请日：2005-06-03

申请人： Daniel T. Georgi ,  Songhua Chen ,  David Jacobi

发明人： Daniel T. Georgi ,  Songhua Chen ,  David Jacobi

IPC分类号： G01V11/00

CPC分类号： G01V11/00 ,  G01N24/081 ,  G01V2210/6167

摘要： Parameters of a pore-scale geometric model of a clastic earth formation are adjusted so that the output of the model matches measurements made on a core sample. Additional properties of the earth formation are predicted using the pore-scale model. The additional properties may be based on additional measurements of properties of a fluid in the formation.

摘要翻译： 调整碎屑岩地层的孔隙尺度几何模型的参数，使得模型的输出与核心样本上进行的测量相匹配。 使用孔隙尺度模型预测地层的附加属性。 额外的性质可以基于地层中流体的性质的附加测量。

公开(公告)号：US07317991B2

公开(公告)日：2008-01-08

申请号：US11321497

申请日：2005-12-29

申请人： Tsili Wang ,  Daniel T. Georgi

发明人： Tsili Wang ,  Daniel T. Georgi

IPC分类号： G01V3/18

CPC分类号： G01V3/28

摘要： Multicomponent measurements made in a cross-bedded earth formation are processed to give one or more equivalent TI models. Resistivity information about the cross-bedding is obtained from one of the TI models and a measured cross-bedding angle. Resistivity information about the cross-bedding may also be obtained using a combination of two or more of the equivalent TI models.

摘要翻译： 在跨层地层中进行的多组分测量被处理以给出一个或多个等效的TI模型。 关于交叉床垫的电阻率信息是从TI型号之一和测量的交叉层叠角度获得的。 也可以使用两个或更多个等效TI模型的组合来获得关于交叉层叠物的电阻率信息。

公开(公告)号：US6069477A

公开(公告)日：2000-05-30

申请号：US994497

申请日：1997-12-19

申请人： Songhua Chen ,  Daniel T. Georgi

发明人： Songhua Chen ,  Daniel T. Georgi

IPC分类号： G01R33/44 ,  G01V3/32 ,  G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081

摘要： The total porosity of a subterranean formation is calculated by summing the effective Porosity and the clay bound water (CBW) porosity. With the invention described in this patent, the distortion effects of clay bound water (CBW) porosity on the measurement of total porosity is filtered out. The effects will be more significant in slialy sand where the CBW porosity component of total porosity is abundant. The correct NMR transverse relaxation time (T.sub.2) spectra distribution is essential to a determination of capillary bound fluid (BVI) partial porosity and the Spectral Bulk Volume Irreducible (SBVI) model. The same data correction concept can be applied to make a meaningful comparison of well logs or laboratory core NMR data that are obtained with different interecho time (TE) sampling periods.

摘要翻译： 通过将有效孔隙度和粘土结合水（CBW）孔隙度相加来计算地层的总孔隙率。 利用该专利中描述的发明，滤除粘土结合水（CBW）孔隙度对总孔隙度测量的变形效应。 这种效应在总孔隙度的CBW孔隙度分量丰富的泥沙中更为显着。 正确的NMR横向弛豫时间（T2）光谱分布对于确定毛细血管结合流体（BVI）部分孔隙度和光谱体积不可约（SBVI）模型是必不可少的。 可以应用相同的数据校正概念，以便对不同间隔时间（TE）采样周期获得的测井数据或实验室核心NMR数据进行有意义的比较。

公开(公告)号：US5610331A

公开(公告)日：1997-03-11

申请号：US456939

申请日：1995-06-01

申请人： Daniel T. Georgi

发明人： Daniel T. Georgi

IPC分类号： E21B47/06 ,  E21B47/10 ,  E21B47/00 ,  G01F1/74 ,  G01K13/00

CPC分类号： E21B47/10 ,  E21B47/065

摘要： An apparatus for imaging the thermal properties of fluids in a wellbore. The apparatus includes a tool mandrel adapted to traverse the wellbore. The apparatus includes temperature sensors positioned at spaced apart locations along radially extendible arms attached to the mandrel. A temperature measuring circuit connected to each one of the sensors. The apparatus includes a circuit for applying a momentary current pulse to each of the temperature sensors, for momentarily raising their temperatures. Momentary increases in the sensor temperatures are provided so that the thermal transient response of the fluid in contact with each sensor can be determined. The invention includes a method of determining the flow regime of the fluid flowing in the wellbore. The method includes the steps of measuring the temperature of fluids in the wellbore at spaced apart locations within the cross-sectional area of the wellbore, using a tool having temperature sensors positioned at spaced apart locations. The flow regime is determined by generating a temperature map of the wellbore and comparing the temperature map with temperature maps of known flow regimes. The method includes the steps of applying current pulses to the temperature sensors to momentarily raise their temperature, measuring the temperature decay at each sensor, thereby determining the thermal transient response of the fluids in contact with each sensor. A map is generated of the thermal transient response and the thermal transient response map is compared to maps of transient responses in known fluid flow regimes.

摘要翻译： 用于对井眼中的流体的热性质进行成像的装置。 该装置包括适于穿过井眼的工具心轴。 该装置包括温度传感器，其位于沿着连接到心轴的径向可延伸臂的间隔开的位置处。 连接到每个传感器的温度测量电路。 该装置包括用于向每个温度传感器施加瞬时电流脉冲以短暂升高其温度的电路。 提供传感器温度的瞬时增加，使得可以确定与每个传感器接触的流体的热瞬变响应。 本发明包括确定在井眼中流动的流体的流动状态的方法。 该方法包括以下步骤：使用具有定位在间隔开的位置处的温度传感器的工具来测量在井眼的横截面区域内间隔开的位置处的井眼中的流体的温度。 通过产生井眼的温度图并将温度图与已知流动状态的温度图进行比较来确定流动方案。 该方法包括以下步骤：将电流脉冲施加到温度传感器以瞬时升高其温度，测量每个传感器处的温度衰减，从而确定与每个传感器接触的流体的热瞬变响应。 产生热瞬态响应的映射，并将热瞬态响应映射与已知流体流动状态下的瞬态响应的映射进行比较。