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公开(公告)号：US4958073A
公开(公告)日：1990-09-18
申请号：US281577
申请日：1988-12-08
IPC分类号： G01V5/12
CPC分类号： G01V5/12
摘要： A high resolution gamma-gamma apparatus is provided with a chemical source and a photon detector in such close proximity such that the detector provides a positive response to an increase in formation density. Typically, such a response is obtained when the detector opening is within one source photon mean free path of the source opening. For a Cs 137 source, the furthest spacing would be about two inches, although spacings of less than one inch are preferable. In order to decrease background noise, shielding is placed between the source and detector. A first embodiment of the tool has an uncollimated source, and a substantially uncollimated detector with the source and detector being coaxial and with the detector behind the source and separated by shielding. A second embodiment has a collimated source with an uncollimated detector, while a third embodiment has an uncollimated source with a collimated detector. The provided apparatus are useful for high resolution density and Pe measurements. Additional axially spaced negative response detectors may be included to provided additional information which are useful in correcting for environmental effects. Also, circumferentially spaced detectors along with additional sources are useful in conducting dip analysis.
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2.发明授权High voltage x-ray generator and related oil well formation analysis apparatus and method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US07991111B2
公开(公告)日：2011-08-02
申请号：US12882005
申请日：2010-09-14
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV以上能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器通过地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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3.发明授权High voltage x-ray generator and related oil well formation analysis apparatus and method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US07668293B2
公开(公告)日：2010-02-23
申请号：US12468897
申请日：2009-05-20
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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4.发明申请High Voltage X-Ray Generator and Related Oil Well Formation Analysis Apparatus and Method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US20080159480A1
公开(公告)日：2008-07-03
申请号：US11611441
申请日：2006-12-15
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 260 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括稳定的紧凑型x射线发生器，其能够在等于或大于125℃的温度下工作时提供260keV或更高能量的辐射。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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5.发明申请High Voltage X-Ray Generator and Related Oil Well Formation Analysis Apparatus and Method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US20110002443A1
公开(公告)日：2011-01-06
申请号：US12882005
申请日：2010-09-14
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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6.发明申请HIGH VOLTAGE X-RAY GENERATOR AND RELATED OIL WELL FORMATION ANALYSIS APPARATUS AND METHOD 有权高电压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US20090225949A1
公开(公告)日：2009-09-10
申请号：US12468897
申请日：2009-05-20
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV以上能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器通过地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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公开(公告)号：US07817781B2
公开(公告)日：2010-10-19
申请号：US12503517
申请日：2009-07-15
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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公开(公告)号：US20090274276A1
公开(公告)日：2009-11-05
申请号：US12503517
申请日：2009-07-15
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 250 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括能够在等于或大于125℃的温度下工作时能够提供250keV及更高能量的辐射的稳定的紧凑型X射线发生器。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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9.发明授权High voltage x-ray generator and related oil well formation analysis apparatus and method 有权高压X射线发生器及相关油井形成分析装置及方法公开(公告)号：US07564948B2
公开(公告)日：2009-07-21
申请号：US11611441
申请日：2006-12-15
CPC分类号： H01J35/06 , H01J35/14 , H01J2235/0233 , H01J2235/06 , H01J2235/163 , H05G1/02 , H05G1/10
摘要： An apparatus and method for determining the density and other properties of a formation surrounding a borehole using a high voltage x-ray generator. One embodiment comprises a stable compact x-ray generator capable of providing radiation with energy of 260 keV and higher while operating at temperatures equal to or greater than 125° C. In another embodiment, radiation is passed from an x-ray generator into the formation; reflected radiation is detected by a short spaced radiation detector and a long spaced radiation detector. The output of these detectors is then used to determine the density of the formation. In one embodiment, a reference radiation detector monitors a filtered radiation signal. The output of this detector is used to control at least one of the acceleration voltage and beam current of the x-ray generator.
摘要翻译： 一种用于使用高压x射线发生器确定围绕钻孔的地层的密度和其它性质的装置和方法。 一个实施例包括稳定的紧凑型x射线发生器，其能够在等于或大于125℃的温度下工作时提供260keV或更高能量的辐射。在另一个实施例中，辐射从X射线发生器传送到地层 ; 反射辐射由短间隔的辐射检测器和长间隔的辐射检测器检测。 然后使用这些检测器的输出来确定地层的密度。 在一个实施例中，参考辐射检测器监视经滤波的辐射信号。 该检测器的输出用于控制x射线发生器的加速电压和射束电流中的至少一个。
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公开(公告)号：US20130308753A1
公开(公告)日：2013-11-21
申请号：US13881680
申请日：2011-10-28
申请人： Joel L. Groves , Christian Stoller
发明人： Joel L. Groves , Christian Stoller
IPC分类号： G01V5/12
摘要： The disclosure includes an arrangement of X-ray generator(s) (210), X-ray detector(s) (214), and/or X-ray calibration device(s) for performing X-ray measurements, such as attenuation and/or photo electric factor measurements, on formation core samples (204) in a downhole environment under conditions including limited space and operations at high pressure and temperature.
摘要翻译： 本公开包括用于执行X射线测量的X射线发生器（210），X射线检测器（214）和/或X射线校准装置的布置，诸如衰减和 /或光电因素测量，在井下环境中的形成岩心样品（204）上，包括在高压和高温下的有限空间和操作的条件下。
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