公开(公告)号：US20050199794A1

公开(公告)日：2005-09-15

申请号：US10809066

申请日：2004-03-15

申请人： Medhat Mickael

发明人： Medhat Mickael

IPC分类号： E21B49/00 ,  G01V20060101 ,  G01V5/00 ,  G01V5/06 ,  G01V5/12 ,  G01V13/00

CPC分类号： G01V5/06

摘要： A method for determining concentrations of naturally occurring radioactive elements in earth formation by analysis of gamma ray energy spectra measured by at least one gamma ray detector while the borehole is being drilled. Gain of the gamma ray detector is controlled automatically through analysis of the spectra. The one or more gamma ray detectors are disposed at the periphery of the downhole instrumentation to maximize sensitivity. Elemental concentrations of naturally occurring radioactive elements such as potassium, uranium and thorium are measured either as a function of depth in the borehole, or as a function of aximuthal sectors around the borehole wall, or as a function of both depth and azimuthal sectors.

摘要翻译： 一种用于通过分析在钻孔时由至少一个伽马射线探测器测量的伽马射线能谱来确定地层中天然存在的放射性元素的浓度的方法。 通过分析光谱自动控制伽马射线检测器的增益。 一个或多个伽马射线检测器设置在井下仪器的周边以最大化灵敏度。 天然存在的放射性元素如钾，铀和钍的元素浓度是作为钻孔深度的函数，或作为井壁周围的轴向部分的函数，或作为深度和方位角扇区的函数来测量的。

公开(公告)号：US06927390B2

公开(公告)日：2005-08-09

申请号：US10267944

申请日：2002-10-08

申请人： Medhat Mickael

发明人： Medhat Mickael

IPC分类号： G01V5/00 ,  G01V5/12

CPC分类号： G01V5/125

摘要： A system for measuring elemental compositions and other properties of earth formation penetrated by a borehole, wherein the measurements are made while drilling the borehole. The downhole instrumentation includes a neutron source and a gamma ray detector disposed in a drill collar. Formation parameters of interest are determined from the energy and intensity of gamma radiation induced in the formation by the neutron source. By minimizing the amount of iron in the immediate vicinity of the gamma ray detector, disposing no iron directly between the detector and the formation, and positioning the gamma ray detector as close as practical to the formation, interfering gamma radiation from iron is reduced thereby increasing precision and accuracy of the formation parameter measurements.

摘要翻译： 用于测量钻孔穿透的地层的元素组成和其它性质的系统，其中在钻孔时进行测量。 井下仪器包括设置在钻铤中的中子源和伽马射线探测器。 由中子源形成的γ射线的能量和强度确定感兴趣的形成参数。 通过最小化伽马射线探测器附近的铁量，在检测器和地层之间直接放置铁，并将伽马射线探测器放置在与地层相近的位置，从而降低来自铁的γ辐射，从而增加 精度和精度的地层参数测量。

公开(公告)号：US20060065824A1

公开(公告)日：2006-03-30

申请号：US11050005

申请日：2005-02-01

申请人： Medhat Mickael

发明人： Medhat Mickael

IPC分类号： G12B13/00 ,  G01V5/00

CPC分类号： G01V5/06 ,  E21B47/0005 ,  G01T1/40 ,  G01V1/44

摘要： Apparatus and methods for measuring gamma ray energy spectra wherein the gain of the measurement system is continuously and automatically adjusted to a standard gain. Gain of the system is controlled automatically through analysis of the measured energy spectra. Alternately, the gain of the system is controlled by the use of a calibration source and the operation of the system at a standard and amplified gain. Gain control can be improved further by combining both the spectral analysis and calibration source methodology. The system can be embodied in a wireline or logging-while-drilling borehole logging systems that measure naturally occurring or induced gamma ray spectra. The system can also be used in non-borehole applications including non-borehole gamma ray spectral systems such as computer-aided-tomography scan systems, security scanning systems, radiation monitoring systems, process control systems, analytical measurement systems using activation analysis methodology, and the like.

摘要翻译： 用于测量伽马射线能谱的装置和方法，其中测量系统的增益被连续且自动地调节到标准增益。 通过分析测量的能量谱自动控制系统的增益。 或者，通过使用校准源和以标准和放大增益的系统操作来控制系统的增益。 通过结合光谱分析和校准源方法，可以进一步提高增益控制。 该系统可以体现在测量天然存在或诱导的伽马射线光谱的有线或同时钻井的钻孔测井系统中。 该系统还可用于非钻孔应用，包括非钻孔伽马射线光谱系统，例如计算机辅助断层摄影扫描系统，安全扫描系统，辐射监测系统，过程控制系统，使用激活分析方法的分析测量系统，以及 类似。

公开(公告)号：US07202456B2

公开(公告)日：2007-04-10

申请号：US11050005

申请日：2005-02-01

申请人： Medhat Mickael

发明人： Medhat Mickael

IPC分类号： G01J3/00

CPC分类号： G01V5/06 ,  E21B47/0005 ,  G01T1/40 ,  G01V1/44

摘要： Apparatus and methods for measuring gamma ray energy spectra wherein the gain of the measurement system is continuously and automatically adjusted to a standard gain. Gain of the system is controlled automatically through analysis of the measured energy spectra. Alternately, the gain of the system is controlled by the use of a calibration source and the operation of the system at a standard and amplified gain. Gain control can be improved further by combining both the spectral analysis and calibration source methodology. The system can be embodied in a wireline or logging-while-drilling borehole logging systems that measure naturally occurring or induced gamma ray spectra. The system can also be used in non-borehole applications including non-borehole gamma ray spectral systems such as computer-aided-tomography scan systems, security scanning systems, radiation monitoring systems, process control systems, analytical measurement systems using activation analysis methodology, and the like.

摘要翻译： 用于测量伽马射线能谱的装置和方法，其中测量系统的增益被连续且自动地调节到标准增益。 通过分析测量的能量谱自动控制系统的增益。 或者，通过使用校准源和以标准和放大增益的系统操作来控制系统的增益。 通过结合光谱分析和校准源方法，可以进一步提高增益控制。 该系统可以体现在测量天然存在或诱导的伽马射线光谱的有线或同时钻井的钻孔测井系统中。 该系统还可用于非钻孔应用，包括非钻孔伽马射线光谱系统，例如计算机辅助断层摄影扫描系统，安全扫描系统，辐射监测系统，过程控制系统，使用激活分析方法的分析测量系统，以及 类似。

公开(公告)号：US20060102834A1

公开(公告)日：2006-05-18

申请号：US10990174

申请日：2004-11-16

申请人： Medhat Mickael

发明人： Medhat Mickael

IPC分类号： G01V5/08

CPC分类号： G01V5/08

摘要： A logging system for measuring parameters of earth formation penetrated by a well borehole. Measurements made with the system are not adversely affected by varying pressure encountered a borehole environment. This is accomplished by the use of a main compensation element and a detector compensation element render source and detector geometry invariant to varying pressure. The system is particularly suited for nuclear LWD systems such as back scatter gamma ray density systems. The basic concepts of the system are, however, applicable to other types of nuclear measurement systems that comprise one or more radiation sources, and one or more axially spaced radiation detectors, where system response is a function of source-detector spacing. The basic concepts of the system are also applicable to other types of logging systems, such as electromagnetic and acoustic, where source (transmitter) and sensor (receiver) elements require invariant geometry in order to maximize accuracy of measurements.

摘要翻译： 用于测量井眼穿透的地层参数的测井系统。 使用系统进行的测量不会受到钻孔环境遇到的不同压力的不利影响。 这是通过使用主要补偿元件和检测器补偿元件渲染源和检测器几何不变的压力来实现的。 该系统特别适用于核LWD系统，如背散射伽马射线密度系统。 然而，该系统的基本概念适用于包括一个或多个辐射源的其他类型的核测量系统，以及一个或多个轴向间隔的辐射检测器，其中系统响应是源 - 检测器间隔的函数。 系统的基本概念也适用于其他类型的测井系统，例如电磁和声学，其中源（发射机）和传感器（接收机）元件需要不变几何，以最大化测量精度。

公开(公告)号：US07151254B2

公开(公告)日：2006-12-19

申请号：US10990174

申请日：2004-11-16

申请人： Medhat Mickael

发明人： Medhat Mickael

IPC分类号： G01V5/12 ,  E21B47/01

CPC分类号： G01V5/08

摘要： A logging system for measuring parameters of earth formation penetrated by a well borehole. Measurements made with the system are not adversely affected by varying pressure encountered a borehole environment. This is accomplished by the use of a main compensation element and a detector compensation element to render source and detector geometry invariant to varying pressure. The system is particularly suited for nuclear LWD systems such as back scatter gamma ray density systems. The basic concepts of the system are, however, applicable to other types of nuclear measurement systems that comprise one or more radiation sources, and one or more axially spaced radiation detectors, where system response is a function of source-detector spacing. The basic concepts of the system are also applicable to other types of logging systems, such as electromagnetic and acoustic, where source (transmitter) and sensor (receiver) elements require invariant geometry in order to maximize accuracy of measurements.

摘要翻译： 用于测量井眼穿透的地层参数的测井系统。 使用系统进行的测量不会受到钻孔环境遇到的不同压力的不利影响。 这是通过使用主补偿元件和检测器补偿元件来实现的，以使得源和检测器几何对变化的压力不变。 该系统特别适用于核LWD系统，如背散射伽马射线密度系统。 然而，该系统的基本概念适用于包括一个或多个辐射源的其他类型的核测量系统，以及一个或多个轴向间隔的辐射检测器，其中系统响应是源 - 检测器间隔的函数。 系统的基本概念也适用于其他类型的测井系统，例如电磁和声学，其中源（发射机）和传感器（接收机）元件需要不变几何，以最大化测量精度。