Methods and apparatus to monitor contamination levels in a formation fluid
    4.
    发明授权
    Methods and apparatus to monitor contamination levels in a formation fluid 有权
    监测地层流体污染水平的方法和装置

    公开(公告)号:US08024125B2

    公开(公告)日:2011-09-20

    申请号:US12362602

    申请日:2009-01-30

    IPC分类号: G01V8/00 E21B49/08

    摘要: Apparatus and methods to monitor contamination levels in a formation fluid are disclosed. An example method involves obtaining first property data indicative of a first fluid property of a formation fluid and second property data indicative of a second fluid property of the formation fluid. A correlation between the first and second property data is generated and third data is fitted to the correlation. A fitting parameter is determined based on the third data indicative of an amount of change of the first property data relative to an amount of change of the second property data.

    摘要翻译: 公开了一种用于监测地层流体中污染水平的装置和方法。 示例性方法包括获得指示地层流体的第一流体特性的第一属性数据和指示地层流体的第二流体性质的第二特性数据。 生成第一和第二属性数据之间的相关性,并且将第三数据拟合到相关性。 基于指示第一属性数据相对于第二属性数据的变化量的变化量的第三数据来确定拟合参数。

    Methods and apparatus to monitor contamination levels in a formation fluid
    5.
    发明授权
    Methods and apparatus to monitor contamination levels in a formation fluid 有权
    监测地层流体污染水平的方法和装置

    公开(公告)号:US07711488B2

    公开(公告)日:2010-05-04

    申请号:US11764284

    申请日:2007-06-18

    IPC分类号: G01V8/00 G01N21/00 E21B49/08

    摘要: Apparatus and methods to monitor contamination levels in a formation fluid arc disclosed. An example method involves obtaining first property data indicative of a first fluid property of a formation fluid and second property data indicative of a second fluid property of the formation fluid. A correlation between the first and second property data is generated and third data is fitted to the correlation. A fitting parameter is determined based on the third data indicative of an amount of change of the first property data relative to an amount of change of the second property data.

    摘要翻译: 公开了用于监测地层流体中的污染水平的装置和方法。 示例性方法包括获得指示地层流体的第一流体特性的第一属性数据和指示地层流体的第二流体性质的第二特性数据。 生成第一和第二属性数据之间的相关性,并且将第三数据拟合到相关性。 基于指示第一属性数据相对于第二属性数据的变化量的变化量的第三数据来确定拟合参数。

    METHODS AND APPARATUS TO MONITOR CONTAMINATION LEVELS IN A FORMATION FLUID
    6.
    发明申请
    METHODS AND APPARATUS TO MONITOR CONTAMINATION LEVELS IN A FORMATION FLUID 有权
    监测污染物形成流体的方法和装置

    公开(公告)号:US20090150079A1

    公开(公告)日:2009-06-11

    申请号:US12362602

    申请日:2009-01-30

    IPC分类号: G01V9/00 E21B47/00

    摘要: Apparatus and methods to monitor contamination levels in a formation fluid are disclosed. An example method involves obtaining first property data indicative of a first fluid property of a formation fluid and second property data indicative of a second fluid property of the formation fluid. A correlation between the first and second property data is generated and third data is fitted to the correlation. A fitting parameter is determined based on the third data indicative of an amount of change of the first property data relative to an amount of change of the second property data.

    摘要翻译: 公开了一种用于监测地层流体中污染水平的装置和方法。 示例性方法包括获得指示地层流体的第一流体特性的第一属性数据和指示地层流体的第二流体性质的第二特性数据。 生成第一和第二属性数据之间的相关性,并且将第三数据拟合到相关性。 基于指示第一属性数据相对于第二属性数据的变化量的变化量的第三数据来确定拟合参数。

    Methods and Apparatus to Monitor Contamination Levels in a Formation Fluid
    7.
    发明申请
    Methods and Apparatus to Monitor Contamination Levels in a Formation Fluid 有权
    监测地层液体污染水平的方法和装置

    公开(公告)号:US20080156088A1

    公开(公告)日:2008-07-03

    申请号:US11764284

    申请日:2007-06-18

    IPC分类号: G01V9/00 G01V8/00

    摘要: Apparatus and methods to monitor contamination levels in a formation fluid arc disclosed. An example method involves obtaining first property data indicative of a first fluid property of a formation fluid and second property data indicative of a second fluid property of the formation fluid. A correlation between the first and second property data is generated and third data is fitted to the correlation. A fitting parameter is determined based on the third data indicative of an amount of change of the first property data relative to an amount of change of the second property data.

    摘要翻译: 公开了用于监测地层流体中的污染水平的装置和方法。 示例性方法包括获得指示地层流体的第一流体特性的第一属性数据和指示地层流体的第二流体性质的第二特性数据。 生成第一和第二属性数据之间的相关性,并且将第三数据拟合到相关性。 基于指示第一属性数据相对于第二属性数据的变化量的变化量的第三数据来确定拟合参数。

    Determining phase transition pressure of downhole retrograde condensate
    8.
    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

    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。