利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

133 条记录 (耗时 0.024 秒)

    Methods and apparatus to determine a concentration of nitrogen in a downhole fluid
    1.
    发明授权
    Methods and apparatus to determine a concentration of nitrogen in a downhole fluid 有权
    确定井下流体中氮浓度的方法和装置

    公开(公告)号：US08032303B2

    公开(公告)日：2011-10-04

    申请号：US12277262

    申请日：2008-11-24

    申请人： Go Fujisawa ,  Chee Kin Khong ,  Oliver C. Mullins

    发明人： Go Fujisawa ,  Chee Kin Khong ,  Oliver C. Mullins

    IPC分类号： G01V1/40

    CPC分类号： G01N33/2823

    摘要： Methods and apparatus to determine a concentration of nitrogen in a downhole fluid are described. An example apparatus to determine a concentration of nitrogen in a downhole fluid includes a fluid measurement unit to measure a first fluid composition and a density of at least a hydrocarbon and carbon dioxide in a sample of the downhole fluid. Additionally, the example apparatus includes one or more sensors to measure at least a pressure and a temperature of the sample. Further, the example apparatus includes a processing unit to determine a first theoretical density based on at least the first fluid composition, the temperature, and the pressure the sample. Further still, the example apparatus includes an analyzer to determine a first difference between the density of at least the hydrocarbon and the carbon dioxide in the sample and the first theoretical density. The first difference is associated with a concentration of nitrogen in the sample.

    摘要翻译： 描述了确定井下流体中的氮浓度的方法和装置。 用于确定井下流体中的氮浓度的示例性装置包括测量井下流体样品中的第一流体组成和至少一种烃和二氧化碳的密度的流体测量单元。 另外，该示例性装置包括用于测量样品的至少压力和温度的一个或多个传感器。 此外，该示例性装置包括处理单元，该处理单元至少基于第一流体组成，温度和样品的压力确定第一理论密度。 此外，示例性装置包括分析器，用于确定样品中至少烃和二氧化碳的密度与第一理论密度之间的第一差异。 第一个差异与样品中的氮浓度有关。

    Method and apparatus for in-situ side-wall core sample analysis
    3.
    发明授权
    Method and apparatus for in-situ side-wall core sample analysis 有权
    用于原位侧壁核心样品分析的方法和装置

    公开(公告)号：US07500388B2

    公开(公告)日：2009-03-10

    申请号：US11304296

    申请日：2005-12-15

    申请人： Go Fujisawa ,  Oliver C. Mullins ,  Peter David Wraight ,  Joel Lee Groves ,  Lennox Reid ,  Felix Chen ,  Gary Corris ,  Yi-Qiao Song

    发明人： Go Fujisawa ,  Oliver C. Mullins ,  Peter David Wraight ,  Joel Lee Groves ,  Lennox Reid ,  Felix Chen ,  Gary Corris ,  Yi-Qiao Song

    IPC分类号： E21B49/00

    CPC分类号： E21B49/06

    摘要： A wireline-conveyed side-wall core coring tool for acquiring side-wall core from a geological formation for performing in-situ side-wall core analysis. The coring tool has a core analysis unit operable to measure geophysical properties of an acquired side-wall core. The measured geophysical properties may be used to determine the success of the acquisition of side-wall cores by the coring tool. The core analysis unit is operable of performing an in-situ interpretation of measured geophysical property of the side-wall core and transmitting in near real-time the measurements or the interpretation results to surface data acquisition and processing apparatus.

    摘要翻译： 一种有线输送的侧壁芯取芯工具，用于从地质层获取侧壁芯，用于进行原位侧壁芯分析。 取芯工具具有可用于测量获得的侧壁芯的地球物理性质的核心分析单元。 测量的地球物理性质可用于确定取芯工具对侧壁岩芯的获取成功。 核心分析单元可操作地对侧壁核心的测量的地球物理特性进行现场解释，并将测量或解释结果近似实时传输到地面数据采集和处理设备。

    Determining dew precipitation and onset pressure in oilfield retrograde condensate
    4.
    发明授权
    Determining dew precipitation and onset pressure in oilfield retrograde condensate 有权
    确定油田逆行冷凝水中的露水沉淀和起始压力

    公开(公告)号：US07002142B2

    公开(公告)日：2006-02-21

    申请号：US10309850

    申请日：2002-12-03

    申请人： Oliver C. Mullins ,  Go Fujisawa ,  Chengli Dong ,  Andrew Kurkjian ,  John Nighswander ,  Toru Terabayashi ,  Satoko Yoshida ,  Hideki Kinjo ,  Henning Groenzin

    发明人： Oliver C. Mullins ,  Go Fujisawa ,  Chengli Dong ,  Andrew Kurkjian ,  John Nighswander ,  Toru Terabayashi ,  Satoko Yoshida ,  Hideki Kinjo ,  Henning Groenzin

    IPC分类号： G01V8/00

    CPC分类号： E21B49/084 ,  E21B47/1015 ,  E21B49/005 ,  E21B49/10 ,  G01N21/64 ,  G01N33/241 ,  G01N33/2823

    摘要： A method and apparatus detects dew precipitation and determines dew precipitation onset pressure in a sample of formation fluid located downhole in an oilfield reservoir. In a preferred embodiment, the method includes (a) isolating a sample of formation fluid downhole; (b) illuminating the sample downhole with fluorescence excitation light; (c) measuring at least one characteristic of fluorescence short from the sample; (d) reducing pressure on the sample; (e) repeating steps (b) to (d); (f) detecting dew precipitation when a change is detected in a parameter that is a function of the at least one characteristic of fluorescence emission; and (g) setting dew precipitation onset pressure equal to pressure on the sample when the change in the parameter is detected. The parameter preferably is a function of fluorescence intensity and fluorescence red shift, and the change is an increase in fluorescence intensity and detection of fluorescence red shift. Also, the function includes a ratio of a measured intensity at a first wavelength to a reference intensity, and the reference intensity is a function of a measured intensity at a second wavelength.

    摘要翻译： 方法和装置检测露点沉淀，并确定位于油田储层中井下的地层流体样品中的露水沉淀开始压力。 在一个优选实施例中，该方法包括（a）在井下分离地层流体样品; （b）用荧光激发光照射井下样品; （c）从所述样品测量至少一种荧光短的特征; （d）降低样品压力; （e）重复步骤（b）至（d）; （f）当在作为荧光发射的至少一个特征的函数的参数中检测到变化时，检测露水沉淀; 和（g）当检测到参数变化时，将露珠沉淀开始压力设定为等于样品上的压力。 该参数优选是荧光强度和荧光红移的函数，并且荧光强度的变化和荧光红移的检测变化。 此外，该功能包括第一波长处的测量强度与参考强度的比率，并且参考强度是第二波长处的测量强度的函数。

    Methods and apparatus to estimate fluid component volumes
    6.
    发明授权
    Methods and apparatus to estimate fluid component volumes 有权
    估计流体组分体积的方法和装置

    公开(公告)号：US08813554B2

    公开(公告)日：2014-08-26

    申请号：US13149901

    申请日：2011-06-01

    申请人： Go Fujisawa ,  Andrew J. Carnegie ,  Jack H. Harfoushian ,  Saifon Daungkaew Sirimongkolkitti ,  Oliver C. Mullins

    发明人： Go Fujisawa ,  Andrew J. Carnegie ,  Jack H. Harfoushian ,  Saifon Daungkaew Sirimongkolkitti ,  Oliver C. Mullins

    IPC分类号： E21B49/08

    CPC分类号： E21B49/081

    摘要： Methods of and apparatus to estimate one or more volumes of one or more components of a fluid in a sample chamber of a downhole tool are described. An example method includes obtaining a sample chamber volume measurement, a flowline volume measurement and a supplemental volume measurement. The example method includes drawing the fluid into the sample chamber until the sample chamber is substantially full and measuring a characteristic of the fluid in the sample chamber at a first time to obtain a first characteristic measurement. The example method also includes adding a supplemental volume corresponding to the supplemental volume measurement to over-pressurize the sample chamber after measuring the characteristic at the first time and measuring the characteristic of the fluid in the sample chamber at a second time to obtain a second characteristic measurement. The second time is after the sample chamber is over-pressurized. In addition, the example method includes calculating a first volume of a first component of the one or more components of the fluid based on the first characteristic measurement, the second characteristic measurement, the sample chamber volume measurement, the flowline volume measurement and the supplemental volume measurement.

    摘要翻译： 描述了用于估计井下工具的样品室中的一种或多种流体的一种或多种组分的方法和装置。 示例性方法包括获得样品室体积测量，流线体积测量和补充体积测量。 该示例性方法包括将流体抽入样品室，直到样品室基本上满，并且在第一次测量样品室中的流体的特性以获得第一特征测量。 该示例方法还包括在第一次测量特征之后添加与补充体积测量相对应的补充体积，以在第二次测量样品室中的特性之后对样品室进行过压以获得第二特性 测量。 样品室第二次过压后。 此外，该示例性方法包括基于第一特征测量，第二特征测量，样本室体积测量，流量线测量和补充体积来计算流体的一个或多个分量的第一分量的第一体积 测量。

    Methods and apparatus for oil composition determination
    7.
    发明授权
    Methods and apparatus for oil composition determination 有权
    油组分测定方法和装置

    公开(公告)号：US07458258B2

    公开(公告)日：2008-12-02

    申请号：US11303695

    申请日：2005-12-16

    申请人： ChengGang Xian ,  Andrew Carnegie ,  ChengLi Dong ,  Oliver C. Mullins ,  Go Fujisawa

    发明人： ChengGang Xian ,  Andrew Carnegie ,  ChengLi Dong ,  Oliver C. Mullins ,  Go Fujisawa

    IPC分类号： E21B47/10

    CPC分类号： G01N33/2823 ,  G01N21/314 ,  G01N21/359 ,  G01N21/80 ,  G01N33/2841

    摘要： A method for determining properties of a formation fluid is provided and includes: obtaining fluid data related to Carbon-Hydrogen molecular bonds in C6+ from a fluid analyzer; and considering the fluid data to calculate mass fractions of hydrocarbon flowing through the fluid analyzer. The method further includes computing gas-oil-ratio of hydrocarbon based on the mass fractions of hydrocarbon. Another method for determining a gas-oil-ratio of a formation fluid includes: obtaining fluid data related to Carbon-Hydrogen molecular bonds in C6+ from a fluid analyzer; considering the fluid data to derive mass fractions of gas and oil; and computing gas-oil-ratio of hydrocarbon based on the derived mass fractions.

    摘要翻译： 提供了一种确定地层流体性质的方法，包括：从流体分析仪获得与C6 +中的碳 - 氢分子键有关的流体数据; 并考虑流体数据来计算流过流体分析仪的烃的质量分数。 该方法还包括基于烃的质量分数来计算烃的油 - 油比。 用于确定地层流体的瓦斯 - 油比的另一种方法包括：从流体分析器获得与C6 +中的碳 - 氢分子键相关的流体数据; 考虑流体数据导出气体和油的质量分数; 并根据衍生的质量分数计算烃的油 - 油比。

    Determining phase transition pressure of downhole retrograde condensate
    8.
    发明授权
    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：US07075063B2

    公开(公告)日：2006-07-11

    申请号：US10670615

    申请日：2003-09-25

    申请人： Chengli Dong ,  Soraya S. Betancourt ,  Go Fujisawa ,  Oliver C. Mullins ,  James J. Dunlap

    发明人： Chengli Dong ,  Soraya S. Betancourt ,  Go Fujisawa ,  Oliver C. Mullins ,  James J. Dunlap

    IPC分类号： 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荧光值的时间序列产生的。 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。