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1. 发明申请

WO2018017902A9 NONINVASIVE ACOUSTICAL PROPERTY MEASUREMENT OF FLUIDS 审中-公开
公开(公告)号：WO2018017902A9
公开(公告)日：2018-01-25
申请号：PCT/US2017/043179
申请日：2017-07-20
申请人： LOS ALAMOS NATIONAL SECURITY, LLC
发明人： SINHA, Dipen N. , PANTEA, Cristian , STURTEVANT, Blake T. , CHAUDHURI, Anirban
IPC分类号： G01F1/66 , G01P5/244 , G01N29/024
摘要： Methods for noninvasive determination of acoustical properties of flowing in pipes having a large ratio (>10) of pipe diameter to wall thickness, and in highly attenuating fluids are described. When vibrations are excited on the outer surface of the wall of a pipe, the resulting vibrations propagate directly through the wall In a normal direction and through the pipe wall as guided waves, appearing on the opposite side of the pipe. This dual path propagation through pipes, where guided waves take the circumferential path in the wall of the pipe and may interfere with the time of-flight measurement obtained from the direct path through the fluid, is at least In part resolved by subtracting the signal from the guided wave from the combined signal, thereby permitting improved observation of the direct path propagation through the fluid.

2. 发明申请

WO2018017902A3 NONINVASIVE ACOUSTICAL PROPERTY MEASUREMENT OF FLUIDS 审中-公开
公开(公告)号：WO2018017902A3
公开(公告)日：2018-01-25
申请号：PCT/US2017/043179
申请日：2017-07-20
申请人： LOS ALAMOS NATIONAL SECURITY, LLC
发明人： SINHA, Dipen N. , PANTEA, Cristian , STURTEVANT, Blake T. , CHAUDHURI, Anirban
IPC分类号： G01F1/66 , G01P5/244 , G01N29/024
摘要： Methods for noninvasive determination of acoustical properties of flowing in pipes having a large ratio (>10) of pipe diameter to wall thickness, and in highly attenuating fluids are described. When vibrations are excited on the outer surface of the wall of a pipe, the resulting vibrations propagate directly through the wall In a normal direction and through the pipe wall as guided waves, appearing on the opposite side of the pipe. This dual path propagation through pipes, where guided waves take the circumferential path in the wall of the pipe and may interfere with the time of-flight measurement obtained from the direct path through the fluid, is at least In part resolved by subtracting the signal from the guided wave from the combined signal, thereby permitting improved observation of the direct path propagation through the fluid.

3. 发明申请

WO2016161459A1 ACOUSTIC GAS VOLUME FRACTION MEASUREMENT IN A MULTIPHASE FLOWING LIQUID 审中-公开
标题翻译：气相气体流量测量在多相流动液体中
公开(公告)号：WO2016161459A1
公开(公告)日：2016-10-06
申请号：PCT/US2016/025942
申请日：2016-04-04
申请人： LOS ALAMOS NATIONAL SECURITY, LLC
发明人： SINHA, Dipen N. , PANTEA, Cristian , CHAUDHURI, Anirban
IPC分类号： G01N29/00
CPC分类号： G01N29/343 , G01N29/036 , G01N2291/014 , G01N2291/0222 , G01N2291/02433 , G01N2291/2634 , H04R1/42
摘要： A first method measures the response of a pipe containing oil excited by a linear acoustic frequency chirp in the tens of kilohertz range encompassing a resonant mode of the pipe. When the gas volume fraction increases the location of the peak maximum of the frequency spectrum and the height of the peak maximum increases. A second method measures the response of a pipe containing oil excited by a continuous vibration source having a chosen frequency above the coincidence frequency leading to fluctuations in the measured amplitudes. The amplitude fluctuation level provides a measure of the gas volume within the pipe. A third method measures the response of a pipe containing oil to excitation by a high-bandwidth, short pulse having a chosen center frequency above the coincidence frequency, which will generate fluctuations in the amplitude of the measured vibrations of the pipe.
摘要翻译：第一种方法测量包含由管道的共振模式在数十千赫兹范围内被线性声频啁啾激发的油的管道的响应。当气体体积分数增加频谱峰值最大值的位置和峰值最大值的高度增加时。第二种方法测量含有由连续振动源激励的油管的响应，所述连续振动源具有高于符合频率的选定频率，导致测量幅度的波动。振幅波动水平提供管内气体体积的量度。第三种方法是通过具有高于重合频率的选定中心频率的高带宽短脉冲来测量含有油的管道对激发的响应，这将产生测量的管道振动幅度的波动。

4. 发明申请

WO2014165833A3 METHODS FOR MEASURING PROPERTIES OF MULTIPHASE OIL-WATER-GAS MIXTURES 审中-公开
公开(公告)号：WO2014165833A3
公开(公告)日：2014-10-09
申请号：PCT/US2014/033097
申请日：2014-04-04
申请人： LOS ALAMOS NATIONAL SECURITY, LLC , SINHA, Dipen, N. , CHAUDHURI, Anirban , PANTEA, Cristian
发明人： SINHA, Dipen, N. , CHAUDHURI, Anirban , PANTEA, Cristian
IPC分类号： G01N29/024
摘要： Methods for real-time, continuous measurements of the composition and other properties of individual phases of petroleum, water and gas mixtures during the oil production process, without requiring test separators, test lines, with associated valving and instrumentation, are described. Embodiments of the present invention direct ultrasonic sound transmission (12, 24) through a flowing multiphase fluid (20) in three frequency ranges: low frequencies, gas bubble resonance frequencies, and high frequencies, wherein certain sound propagation measurements, including sound speed, sound attenuation and sound scattering, are made in one or more of the three separate frequency regions, from which the multiphase composition and other properties are extracted without having to separate the multiphase fluid or the gas from the flowing stream.

5. 发明申请

WO2012031305A1 METHOD FOR NONINVASIVE DETERMINATION OF ACOUSTIC PROPERTIES OF FLUIDS INSIDE PIPES 审中-公开
标题翻译：用于非线性确定流体在管内的声学性质的方法
公开(公告)号：WO2012031305A1
公开(公告)日：2012-03-08
申请号：PCT/US2011/050583
申请日：2011-09-06
申请人： LOS ALAMOS NATIONAL SECURITY, LLC , SINHA, Dipen N. , OSTERHOUDT, Curtis F. , CHAUDHURI, Anirban
发明人： SINHA, Dipen N. , OSTERHOUDT, Curtis F. , CHAUDHURI, Anirban
IPC分类号： G01F17/00
CPC分类号： G01N29/024 , G01F1/74 , G01N29/222 , G01N29/348 , G01N29/4454 , G01N29/50 , G01N2291/0222 , G01N2291/0224 , G01N2291/048 , G01N2291/102
摘要： A method for determining the composition of fluids flowing through pipes from noninvasive measurements of acoustic properties of the fluid is described, which includes exciting a first transducer located on the external surface of the pipe through which the fluid is flowing, to generate an ultrasound chirp signal, as opposed to conventional pulses. The chirp signal is received by a second transducer disposed on the external surface of the pipe opposing the location of the first transducer, from which the transit time through the fluid is determined and the sound speed of the ultrasound in the fluid is calculated. The composition of a fluid is calculated from the sound speed therein. The fluid density may also be derived from measurements of sound attenuation. Several signal processing approaches are described for extracting the transit time information from the data with the effects of the pipe wall having been subtracted.
摘要翻译：描述了一种用于通过流体的声学性质的无创测量来确定流过管道的流体的组成的方法，其包括激发位于流体流过的管的外表面上的第一换能器，以产生超声线性调频脉冲信号，而不是常规脉冲。啁啾信号被设置在与第一换能器的位置相对的管的外表面上的第二换能器接收，从该位置确定通过流体的通过时间，并计算流体中超声的声速。从其中的声速计算流体的组成。流体密度也可以从声衰减的测量中导出。描述了几个信号处理方法，用于从已经减去管壁效应的数据中提取渡越时间信息。

6. 发明申请

WO2018175503A3 SIMULTANEOUS REAL-TIME MEASUREMENT OF COMPOSITION, FLOW, ATTENUATION, DENSITY, AND PIPE-WALL THICKNESS IN MULTIPHASE FLUIDS 审中-公开
公开(公告)号：WO2018175503A3
公开(公告)日：2018-09-27
申请号：PCT/US2018/023440
申请日：2018-03-20
申请人： LOS ALAMOS NATIONAL SECURITY, LLC
发明人： SINHA, Dipen N. , CHAUDHURI, Anirban
IPC分类号： G01N29/02 , G01N29/024 , G01N29/032 , G01N29/036 , G01N29/36 , G01F1/66 , G01F1/6842 , G01F1/708 , G01P5/18
摘要： Apparatus (10) and methods for making simultaneous measurements of composition (water-cut), fluid flow, and sound attenuation in a multiphase fluid flowing (15) through a pipe (12) in real-time, using the same apparatus (10) are described. Additionally, the apparatus (10) provides real-time pipe wall thickness monitoring for observing pipe corrosion or internal deposition. Knowledge of wall thickness is necessary to correct for water-cut (oil-water composition) automatically by adjusting the liquid path length internal to the pipe (spool). The use of short duration frequency chirp excitation signals (24) enables the apparatus to provide information that can be used to extract multiple levels of information from the same measurement in multiphase fluids including the presence of a significant quantity of gas (~ 60% gas volume fraction) in different flow regimes. Besides measuring steady flow, this device is useful for measurements during fast changing flows, such as for a rod-pumped well. Measurements up to about 1000 times a second can reliably be made.

7. 发明申请

WO2018175503A2 SIMULTANEOUS REAL-TIME MEASUREMENT OF COMPOSITION, FLOW, ATTENUATION, DENSITY, AND PIPE-WALL THICKNESS IN MULTIPHASE FLUIDS 审中-公开
公开(公告)号：WO2018175503A2
公开(公告)日：2018-09-27
申请号：PCT/US2018/023440
申请日：2018-03-20
申请人： LOS ALAMOS NATIONAL SECURITY, LLC
发明人： SINHA, Dipen N. , CHAUDHURI, Anirban
IPC分类号： G01F1/66
摘要： Apparatus (10) and methods for making simultaneous measurements of composition (water-cut), fluid flow, and sound attenuation in a multiphase fluid flowing (15) through a pipe (12) in real-time, using the same apparatus (10) are described. Additionally, the apparatus (10) provides real-time pipe wall thickness monitoring for observing pipe corrosion or internal deposition. Knowledge of wall thickness is necessary to correct for water-cut (oil-water composition) automatically by adjusting the liquid path length internal to the pipe (spool). The use of short duration frequency chirp excitation signals (24) enables the apparatus to provide information that can be used to extract multiple levels of information from the same measurement in multiphase fluids including the presence of a significant quantity of gas (~ 60% gas volume fraction) in different flow regimes. Besides measuring steady flow, this device is useful for measurements during fast changing flows, such as for a rod-pumped well. Measurements up to about 1000 times a second can reliably be made.

8. 发明申请

WO2018017902A2 NONINVASIVE ACOUSTICAL PROPERTY MEASUREMENT OF FLUIDS 审中-公开
标题翻译：流体非侵入性声学特性测量
公开(公告)号：WO2018017902A2
公开(公告)日：2018-01-25
申请号：PCT/US2017/043179
申请日：2017-07-20
申请人： LOS ALAMOS NATIONAL SECURITY, LLC
发明人： SINHA, Dipen N. , PANTEA, Cristian , STURTEVANT, Blake T. , CHAUDHURI, Anirban
IPC分类号： G01H11/06
CPC分类号： G01N29/024 , G01H11/06 , G01N29/223 , G01N2291/043
摘要： Methods for noninvasive determination of acoustical properties of fluids flowing in pipes having a large ratio (> 10) of pipe diameter to wall thickness, and in highly attenuating fluids are described. When vibrations are excited on the outer surface of the wall of a pipe, the resulting vibrations propagate directly through the wall in a normal direction and through the pipe wail as guided waves, appearing on the opposite side of the pipe, in the oil/gas industry, where a majority of the pipes used for exploration are 2-in. diameter steel pipes, the time of arrival of the signals through these two paths are almost identical. Additionally, if the pipe is filled with various types of crude oil or crude oil/water mixtures, the acoustic attenuation increases significantly and the signals travelling through the two paths become similar in strength. This dual path propagation through pipes, where guided waves take the circumferential path in the wall of the pipe and may interfere with the time-of-flight measurement obtained from the direct path through the fluid, is at least in part resolved by subtracting the signal from the guided wave from the combined signal, thereby permitting improved observation of the direct path propagation through the fluid.
摘要翻译：描述了用于非侵入性确定在管道直径与壁厚度之比（> 10）以及高度衰减的流体中流动的流体的声学特性的方法。当在管壁的外表面上激发振动时，所产生的振动直接通过壁以正常方向传播，并且作为导波出现在管道的相对侧上的油/气体中通过管壁传播工业，大部分用于勘探的管道都是2英寸。直径钢管，信号到达这两条路径的时间几乎是相同的。另外，如果管道中充满各种原油或原油/水混合物，则声衰减会显着增加，并且通过两条路径的信号在强度上会变得相似。这种通过管道的双路径传播，其中导波在管道壁中的周向路径并且可能干扰从通过流体的直接路径获得的飞行时间测量，至少部分地通过减去信号来自组合信号的导波，从而允许改善观察通过流体的直接路径传播。

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