公开(公告)号：US07950472B2

公开(公告)日：2011-05-31

申请号：US12372282

申请日：2009-02-17

申请人： Rocco DiFoggio ,  Jinsong Zhao

发明人： Rocco DiFoggio ,  Jinsong Zhao

IPC分类号： E21B47/00

CPC分类号： E21B21/08 ,  E21B47/06

摘要： A method for detecting a change in a wellbore fluid includes estimating at least two pressure differences in the wellbore fluid and estimating a change in a density of the fluid using the at least two pressure differences. The density change may be estimated by the equation, Δρ=(ΔPbefore—influx−ΔPafter—influx)/(g×ΔTVD), wherein ΔP is a fluid pressure difference between two points along the wellbore, ρ is a mean value of density of the fluid between the two points, g is gravity and ΔTVD is a vertical distance between the two points. The method may include estimating a density change using an estimated inclination of the wellbore. An apparatus for estimating density changes includes at least two axially spaced apart pressure sensors. The sensor positions may be switched to estimate a correction term to reduce a relative offset between the two pressure sensors.

摘要翻译： 用于检测井眼流体变化的方法包括估计井眼流体中的至少两个压差，并使用至少两个压力差来估计流体密度的变化。 密度变化可以通过方程式（＆Dgr; Pbefore-influx-＆Dgr; Pafter-influx）/（g×＆Dgr; TVD）等式来估计，其中＆Dgr; P是两点之间的流体压力差 井筒， 是两点之间流体密度的平均值，g是重力和Dgr; TVD是两点之间的垂直距离。 该方法可以包括使用估计的井筒倾角来估计密度变化。 用于估计密度变化的装置包括至少两个轴向间隔开的压力传感器。 可以切换传感器位置以估计校正项以减小两个压力传感器之间的相对偏移。

公开(公告)号：US20110114385A1

公开(公告)日：2011-05-19

申请号：US12944049

申请日：2010-11-11

申请人： Rocco DiFoggio

发明人： Rocco DiFoggio

IPC分类号： E21B49/00

CPC分类号： E21B47/101 ,  E21B49/005 ,  G01V11/00

摘要： Temperature and pressure measurements that are made downhole are used to predict a compressional wave velocity for pure water under downhole conditions. The predicted velocity and a measured compressional velocity of a formation brine are used in a non-iterative method to estimate a value of the formation brine salinity that is between 0 and 1.

摘要翻译： 在井下进行的温度和压力测量用于预测井下条件下纯水的压缩波速。 地层盐水的预测速度和测量的压缩速度以非迭代方法用于估计地层盐水盐度在0和1之间的值。

公开(公告)号：US20100315900A1

公开(公告)日：2010-12-16

申请号：US12796817

申请日：2010-06-09

申请人： Rocco DiFoggio ,  Eric B. Molz ,  Anjani R. Achanta

发明人： Rocco DiFoggio ,  Eric B. Molz ,  Anjani R. Achanta

IPC分类号： G01V1/00

CPC分类号： G01V1/40

摘要： An apparatus for estimating an influx of a formation fluid into a borehole fluid, the apparatus having: a carrier; an acoustic transducer disposed at the carrier; a first reflector disposed a first distance from the acoustic transducer and defining a first round trip distance; a second reflector disposed a second distance from the acoustic transducer and defining a second round trip distance; and a processor in communication with the acoustic transducer and configured to measure a difference between a first travel time for the acoustic signal traveling the first round trip distance and a second travel time for the acoustic signal traveling the second round trip distance to estimate the influx of the formation fluid; wherein the acoustic transducer, the first reflector, and the second reflector are disposed in the borehole fluid that is in the borehole.

摘要翻译： 一种用于估计地层流体进入井眼流体的装置，该装置具有：载体; 设置在载体处的声换能器; 第一反射器，布置在离声换能器第一距离处，并且限定第一往返距离; 第二反射器，布置在离声换能器第二距离处，并限定第二往返距离; 以及处理器，其与所述声换能器通信并且被配置为测量行进所述第一往返行程距离的声信号的第一行进时间与行驶所述第二往返距离的所述声信号的第二行进时间之间的差，以估计 地层流体; 其中所述声换能器，所述第一反射器和所述第二反射器设置在所述钻孔中的钻孔流体中。

公开(公告)号：US07852468B2

公开(公告)日：2010-12-14

申请号：US11956945

申请日：2007-12-14

申请人： Rocco DiFoggio

发明人： Rocco DiFoggio

IPC分类号： G01N21/41 ,  G01N21/00 ,  G01V5/08

CPC分类号： G01N21/552 ,  G01D5/268 ,  G01N21/274 ,  G01N21/41 ,  G01N33/2823 ,  G01N2021/8528

摘要： A downhole refractometer apparatus and method include a light source, an optical fiber that receives light emitted from the light source and a fluid cell that receives a downhole fluid. A metalloid interface member is disposed to provide an interface with the downhole fluid in the fluid cell, and a light detecting device detects a light reaction at the metalloid interface member, the downhole fluid property being estimable at least in part based on the light reaction.

摘要翻译： 井下折射仪装置和方法包括光源，接收从光源发射的光的光纤和接收井下流体的流体池。 设置准金属界面构件以提供与流体池中的井下流体的界面，并且光检测装置检测准金属界面构件处的轻反应，井下流体特性可至少部分地基于光反应被估计。

公开(公告)号：US20100147523A1

公开(公告)日：2010-06-17

申请号：US12627626

申请日：2009-11-30

申请人： Rocco DiFoggio

发明人： Rocco DiFoggio

IPC分类号： E21B36/00

CPC分类号： E21B47/011

摘要： A system for controlling a temperature of a downhole component is disclosed. The system includes: a cooling material in thermal communication with the downhole component; and a container configured to house the cooling material therein, the cooling material configured to undergo an endothermic reaction and decompose at a selected temperature and absorb heat from the downhole component.

摘要翻译： 公开了一种用于控制井下部件的温度的系统。 该系统包括：与井下部件热连通的冷却材料; 以及容器，其构造成将冷却材料容纳在其中，所述冷却材料构造成经受吸热反应并在选定温度下分解并从井下部件吸收热量。

公开(公告)号：US07669469B2

公开(公告)日：2010-03-02

申请号：US10836993

申请日：2004-04-30

申请人： Michael Shammai ,  Francisco G. Sanchez ,  James T. Cernosek ,  Rocco DiFoggio

发明人： Michael Shammai ,  Francisco G. Sanchez ,  James T. Cernosek ,  Rocco DiFoggio

IPC分类号： E21B49/08 ,  E21B47/06

CPC分类号： E21B49/082

摘要： The present invention provides an apparatus and method for continuously monitoring the integrity of a pressurized well bore fluid sample collected downhole in an earth boring or well bore. The CDR continuous by measures the temperature and pressure for the down hole sample. Near infrared, mid infrared and visible light analysis is also performed on the small amount of sample to provide an on site analysis of sample properties and contamination level. The onsite analysis comprises determination of gas oil ratio, API gravity and various other parameters which can be estimated by a trained neural network or chemometric equation a flexural mechanical resonator is also provided to measure fluid density and viscosity from which additional parameters can be estimated by a trained neural network or chemometric equation. The sample tank is overpressured or supercharged to obviate adverse pressure drop or other effects of diverting a small sample to the CDR.

摘要翻译： 本发明提供一种用于连续监测在钻孔或井眼中收集在井下的加压井眼流体样品的完整性的装置和方法。 CDR连续测量井下样品的温度和压力。 还对少量样品进行近红外，中红外和可见光分析，以提供样品性质和污染水平的现场分析。 现场分析包括确定瓦斯油比率，API重力和可由训练有素的神经网络或化学计量学方程估计的各种其他参数，还提供弯曲机械共振器以测量流体密度和粘度，通过其可以通过 训练有素的神经网络或化学计量学方程。 样品罐超压或增压，以消除不利的压降或将小样品转移到CDR的其他影响。

公开(公告)号：US20090292474A1

公开(公告)日：2009-11-26

申请号：US12154391

申请日：2008-05-22

申请人： Rocco DiFoggio

发明人： Rocco DiFoggio

IPC分类号： G06F19/00

CPC分类号： E21B47/101 ,  E21B2041/0028 ,  G01N33/2823

摘要： A method for characterizing a desired property of a fluid downhole is described. In some non-limiting examples, the method comprises receiving an input signal representing sound speed of a fluid downhole, processing the input signal using a correlation equation expressing the desired property in terms of at least sound speed to produce an output signal representing the desired property, and outputting the output signal. In some examples, the correlation equation is derived through a chemometric analysis of a training data set, the training data set comprises a plurality of input values and a plurality of output values derived from said input values, between the desired fluid property and the first measured property, and the output values are calculated from the input values using a series of correlation equations. In at least one example, the desired property is gas oil ratio. In another example, the desired property is gas brine ratio. In a further example, the series of correlation equations comprises the Batzle and Wang relations. In another example, the receiving comprises receiving a plurality of input signals representing a plurality of measured properties of a fluid downhole and the processing comprises processing the plurality of input signals using the correlation equation expressing the desired property in terms of the plurality of measured properties.

摘要翻译： 描述用于表征井下流体的期望性质的方法。 在一些非限制性示例中，该方法包括接收表示井下液体声速的输入信号，使用表达所需性质的至少声速的相关方程对输入信号进行处理，以产生表示所需性质的输出信号 ，并输出输出信号。 在一些示例中，通过训练数据集的化学计量分析得出相关方程，训练数据集包括从所述输入值导出的多个输入值和多个输出值，所述输出值在期望的流体性质和第一测量值 属性，并且使用一系列相关方程式从输入值计算输出值。 在至少一个实例中，所需性能是瓦斯油比。 在另一个实例中，期望的性质是气体盐水比。 在另一个例子中，一系列相关方程包括Batzle和Wang的关系。 在另一示例中，接收包括接收表示井下流体的多个测量属性的多个输入信号，并且该处理包括使用表示所述多个测量属性的期望属性的相关方程来处理多个输入信号。

公开(公告)号：US20090235732A1

公开(公告)日：2009-09-24

申请号：US12052001

申请日：2008-03-20

申请人： Rocco DiFoggio

发明人： Rocco DiFoggio

IPC分类号： E21B47/04

CPC分类号： E21B47/04

摘要： A system for measuring a true vertical depth of a downhole tool is provided. The system includes: a first optical clock located at a first depth and having a first frequency; a second optical clock disposable at a downhole location and having a second frequency at the downhole location; and a processor for receiving the first frequency and the second frequency, and calculating a true vertical depth of the second optical clock based on a difference between the first frequency and the second frequency. A system and computer program product for measuring a true vertical depth of a downhole tool are also provided.

摘要翻译： 提供了一种用于测量井下工具的真实垂直深度的系统。 该系统包括：位于第一深度并具有第一频率的第一光学时钟; 第二光学时钟在井下位置处一次性并且在井下位置处具有第二频率; 以及处理器，用于接收第一频率和第二频率，并且基于第一频率和第二频率之间的差计算第二光学时钟的真实垂直深度。 还提供了用于测量井下工具的真实垂直深度的系统和计算机程序产品。

公开(公告)号：US20090188668A1

公开(公告)日：2009-07-30

申请号：US12019452

申请日：2008-01-24

申请人： Rocco DiFoggio

发明人： Rocco DiFoggio

IPC分类号： E21B49/08

CPC分类号： E21B49/10 ,  E21B47/01 ,  G01J3/02 ,  G01J3/0205 ,  G01J3/10 ,  G01J3/44 ,  G01N21/09 ,  G01N21/11 ,  G01N21/3577 ,  G01N21/65 ,  G01N2201/08 ,  G01V8/02

摘要： A downhole fluid sample container includes a fluid sample container detachably coupled to a downhole sub, the fluid sample container having an internal chamber for receiving the downhole fluid. At least one semimetal (for example, silicon or germanium) window is coupled to the fluid sample container, the window being substantially transparent to electromagnetic energy wavelengths within a selected band. A method includes transmitting electromagnetic energy from an electromagnetic energy source to downhole fluid through at least one semimetal window in a container, receiving an electromagnetic energy response with a spectrometer, and estimating the downhole fluid property based at least in part on the electromagnetic energy response.

摘要翻译： 井下流体样品容器包括可拆卸地联接到井下sub的流体样品容器，流体样品容器具有用于接收井下流体的内部室。 至少一个半金属（例如，硅或锗）窗口耦合到流体样品容器，该窗对于选定的带内的电磁能量波长基本上是透明的。 一种方法包括：通过容器中的至少一个半金属窗口将电磁能量从电磁能源传输到井下流体，利用光谱仪接收电磁能量响应，以及至少部分地基于电磁能量响应来估计井下流体特性。

公开(公告)号：US20090173150A1

公开(公告)日：2009-07-09

申请号：US12398060

申请日：2009-03-04

申请人： Rocco DiFoggio ,  Douglas J. Patterson ,  Eric B. Molz ,  Volker Krueger

发明人： Rocco DiFoggio ,  Douglas J. Patterson ,  Eric B. Molz ,  Volker Krueger

IPC分类号： E21B47/12

CPC分类号： E21B47/101 ,  G01N29/024 ,  G01N29/028 ,  G01N29/4418 ,  G01N2291/02818 ,  G01N2291/02836 ,  G01N2291/045 ,  G01V1/44

摘要： A stepped reflector on the outside of a bottomhole assembly produces two reflections in response to excitation of a transducer. The velocity of the fluid in the borehole is estimated using the two reflections. Alternatively, a change in the gas content of the borehole fluid is estimated from changes in the electrical impedance of a transducer in contact with the borehole fluid.

摘要翻译： 在井底组件的外侧的阶梯式反射器响应于换能器的激发而产生两次反射。 使用两次反射来估计钻孔中流体的速度。 或者，根据与钻孔流体接触的换能器的电阻抗的变化来估计井眼流体的气体含量的变化。