公开(公告)号：US06075611A

公开(公告)日：2000-06-13

申请号：US74082

申请日：1998-05-07

申请人： Elizabeth B. Dussan V. ,  Xu Wu ,  Oliver C. Mullins ,  Richard Gaylor ,  Rogerio Tadeu Ramos ,  Kenneth Stephenson

发明人： Elizabeth B. Dussan V. ,  Xu Wu ,  Oliver C. Mullins ,  Richard Gaylor ,  Rogerio Tadeu Ramos ,  Kenneth Stephenson

IPC分类号： G01F1/708 ,  G01F1/74 ,  G01N21/64 ,  G01N21/85 ,  G01N21/00

CPC分类号： G01N21/85 ,  G01F1/7086 ,  G01F1/74 ,  G01N21/64

摘要： Single point optical probes for measuring three-phase characteristics of fluid flow in a hydrocarbon well and methods of processing signals generated by the probe are disclosed. A single fiber optic probe is coupled to a light source and apparatus for detecting reflectance and fluorescence. Light is delivered to the tip of the probe where it exits the probe and illuminates the liquid ambient the probe tip or is internally reflected in the probe when gas is located at the probe tip. If the fluid at the probe tip is oil, the light exits the probe, illuminates the oil, and causes the oil to fluoresce. According to one signal processing method of the invention, the reflectance signal is binarized at a threshold to provide a gas/liquid quasi-binary signal which changes over time. A time fraction of the signal values is used to calculate the gas holdup. According to other signal processing methods of the invention, the fluorescence indication signal is processed by taking its derivative (and if desired a second derivative) to determine the "corners" of the fluorescence signal over time. The derivative signal exhibits a positive and a negative peak which are separated by time. The time between the peaks is used to calculate oil holdup and the amplitude of one of the peaks is used to calculate the velocity of the oil drop.

摘要翻译： 公开了用于测量烃井中流体流动的三相特性的单点光学探针以及由探针产生的处理信号的方法。 单个光纤探针耦合到光源和用于检测反射率和荧光的装置。 当气体位于探针尖端时，光被传送到探头的尖端，在那里它离开探针并照亮探测尖端的液体环境或内部反射在探针中。 如果探针尖端处的液体是油，则光离开探头，照亮油，并引起油发荧光。 根据本发明的一种信号处理方法，反射信号以阈值二值化，以提供随时间变化的气/液准二值信号。 信号值的时间分数用于计算气体滞留量。 根据本发明的其他信号处理方法，通过取其衍生物（并且如果需要，二阶导数）来处理荧光指示信号，以确定荧光信号随时间的“角”。 导数信号表现出正时和负峰，它们被时间分离。 峰值之间的时间用于计算油滞留量，其中一个峰值的振幅用于计算油滴的速度。

公开(公告)号：US07667462B2

公开(公告)日：2010-02-23

申请号：US11615203

申请日：2006-12-22

申请人： Yi-Qiao Song ,  Richard Gaylor

发明人： Yi-Qiao Song ,  Richard Gaylor

IPC分类号： G01V3/00

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3806 ,  G01R33/383 ,  G01R33/421 ,  G01R33/5617

摘要： A nuclear magnetic resonance apparatus that may be used in connection with a variety of different tools, including a down-hole side-wall coring tool as well as with manufacturing process controllers. In one embodiment, the nuclear magnetic resonance apparatus may include a magnet assembly constructed around a sample chamber. The magnet assembly is constructed and arranged to provide a non-uniform magnetic field having a known magnetic field gradient inside the sample chamber. The use of gradient fields may allow for a more flexible and robust magnet assembly design that may be suitable for a variety of different applications.

摘要翻译： 可以与多种不同工具结合使用的核磁共振设备，包括井下侧壁取芯工具以及制造过程控制器。 在一个实施例中，核磁共振装置可以包括围绕样品室构造的磁体组件。 磁体组件被构造和布置成在样品室内提供具有已知磁场梯度的非均匀磁场。 梯度场的使用可以允许更适合于各种不同应用的更灵活和坚固的磁体组件设计。

公开(公告)号：US20080150524A1

公开(公告)日：2008-06-26

申请号：US11615203

申请日：2006-12-22

申请人： Yi-Qiao Song ,  Richard Gaylor

发明人： Yi-Qiao Song ,  Richard Gaylor

IPC分类号： G01V3/32 ,  G01N24/08

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/3806 ,  G01R33/383 ,  G01R33/421 ,  G01R33/5617

摘要： A nuclear magnetic resonance apparatus that may be used in connection with a variety of different tools, including a down-hole side-wall coring tool as well as with manufacturing process controllers. In one embodiment, the nuclear magnetic resonance apparatus may include a magnet assembly constructed around a sample chamber. The magnet assembly is constructed and arranged to provide a non-uniform magnetic field having a known magnetic field gradient inside the sample chamber. The use of gradient fields may allow for a more flexible and robust magnet assembly design that may be suitable for a variety of different applications.

摘要翻译： 可以与多种不同工具结合使用的核磁共振设备，包括井下侧壁取芯工具以及制造过程控制器。 在一个实施例中，核磁共振装置可以包括围绕样品室构造的磁体组件。 磁体组件被构造和布置成在样品室内提供具有已知磁场梯度的非均匀磁场。 梯度场的使用可以允许更适合于各种不同应用的更灵活和坚固的磁体组件设计。