公开(公告)号：US07667192B2

公开(公告)日：2010-02-23

申请号：US11839608

申请日：2007-08-16

Applicant: Scott H. Fricke ,  Robert A. Adolph ,  Mike Evans

Inventor： Scott H. Fricke ,  Robert A. Adolph ,  Mike Evans

IPC: G01V5/10

CPC classification number: G01V5/107

Abstract: A method for determining at least one formation property calculated from neutron measurements acquired with a downhole tool includes emitting neutrons from a source in the tool into the formation, detecting neutrons with at least one detector in the downhole tool, calculating a first slowing-down length (L1) based on the detected neutrons, and deriving a second slowing-down length (L2) based on the first slowing-down length (L1). Further steps include deriving a correlation function for relating slowing-down lengths from a first tool to slowing-down lengths associated with a different source, wherein the correlation function depends on formation properties such as bulk density; and applying the correlation function to the slowing-down length of the first tool to derive the slowing-down length of the second tool. A method for determining a thermal neutron formation porosity based on a slowing-down length from epithermal neutron measurements from an electronic neutron source includes converting the slowing-down length into a computed neutron slowing-down length from thermal neutron measurements from a chemical neutron source, wherein the converting uses a correlation function that depends on formation bulk density; deriving a thermal neutron countrate ratio based on the computed neutron slowing-down length, wherein the deriving uses a function that depends on the formation bulk density and formation sigma; and computing the thermal neutron formation porosity from the thermal neutron countrate ratio.

Abstract translation: 用于确定由井下工具获取的中子测量计算的至少一个地层特性的方法包括从工具中的源将地层中子发射到地层中，用井下工具中的至少一个检测器检测中子，计算第一减速长度 （L1），并且基于第一减速长度（L1）导出第二减速长度（L2）。 进一步的步骤包括导出相关函数，用于将来自第一工具的减速长度与与不同源相关联的减速长度相关联，其中所述相关函数取决于地层特性，例如体积密度; 以及将所述相关函数应用于所述第一工具的减速长度以导出所述第二工具的减速长度。 基于来自电子中子源的超热中子测量的基于减速长度确定热中子形成孔隙的方法包括将来自化学中子源的热中子测量的减速长度转换成计算的中子减速长度， 其中所述转换使用取决于地层堆积密度的相关函数; 基于计算的中子减速长度导出热中子剂量比，其中导出使用取决于地层堆积密度和形成σ的函数; 并从热中子计数比计算热中子形成孔隙度。

公开(公告)号：US07365307B2

公开(公告)日：2008-04-29

申请号：US11307630

申请日：2006-02-15

Applicant: Christian Stoller ,  Peter Wraight ,  Robert A. Adolph

Inventor： Christian Stoller ,  Peter Wraight ,  Robert A. Adolph

IPC: G01V5/10

CPC classification number: G01V5/104

Abstract: A tool for formation logging includes a support configured for movement in a borehole; a neutron source disposed on the support; a neutron monitor disposed on the support and configured to monitor an output of the neutron source; a gamma-ray detector disposed on the support and spaced apart from the neutron source; and a shielding material disposed between the gamma-ray detector and the neutron source.

Abstract translation: 用于地层测井的工具包括构造成在钻孔中移动的支撑件; 设置在支撑件上的中子源; 中子监视器，其设置在所述支撑件上并且被配置为监测所述中子源的输出; 设置在支撑件上并与中子源间隔开的伽马射线探测器; 以及设置在伽马射线检测器和中子源之间的屏蔽材料。

公开(公告)号：US09575189B2

公开(公告)日：2017-02-21

申请号：US13881589

申请日：2011-10-28

Applicant: Joel L. Groves ,  Patrice Ligneul ,  Robert A. Adolph ,  Paul Wanjau ,  Tim Quinlan ,  Jack Purcell

Inventor： Joel L. Groves ,  Patrice Ligneul ,  Robert A. Adolph ,  Paul Wanjau ,  Tim Quinlan ,  Jack Purcell

IPC: G01V5/00 ,  G01T1/20 ,  G01V5/12

CPC classification number: G01T1/2006 ,  G01T1/20 ,  G01V5/12 ,  G01V5/125

Abstract: Systems, methods, and devices involving segmented radiation detectors are provided. For example, a segmented radiation detector may include a segmented scintillator and an optical-to-electrical converter. The segmented scintillator may have several segments that convert radiation to light, at least one of which may detect radiation arriving from an azimuthal angle around an axis of the segmented scintillator. The optical-to-electrical converter may be coupled to the segmented scintillator. The optical-to-electrical converter may receive the light from the segments of the segmented scintillator and output respective electrical signals corresponding to the amount of radiation detected by each segment.

Abstract translation: 提供了涉及分段辐射探测器的系统，方法和设备。 例如，分段辐射检测器可以包括分段闪烁器和光电转换器。 分段闪烁器可以具有将辐射转换成光的几个段，其中至少一个可以检测围绕分段的闪烁体的轴的方位角到达的辐射。 光电转换器可以耦合到分段的闪烁体。 光电转换器可以接收来自分段闪烁器的段的光，并输出对应于由每个段检测到的辐射量的相应电信号。

公开(公告)号：US20100090111A1

公开(公告)日：2010-04-15

申请号：US12573194

申请日：2009-10-05

Applicant: Christian Stoller ,  Robert A. Adolph ,  Bradley Albert Roscoe

Inventor： Christian Stoller ,  Robert A. Adolph ,  Bradley Albert Roscoe

IPC: G01T1/202

CPC classification number: G01T1/202 ,  G01T1/20 ,  G01V5/00 ,  G01V5/10

Abstract: Systems, methods, and devices for thermally protecting a scintillator crystal of a scintillation detector are provided. In one example, a thermally-protected scintillator may include a scintillator crystal and a thermal protection element, which may partially surround the scintillator crystal. The thermal protection element may be configured to prevent the scintillator crystal from experiencing a rate of change in temperature sufficient to cause cracking or non-uniform light output, or a combination thereof.

Abstract translation: 提供了用于热保护闪烁体检测器的闪烁体晶体的系统，方法和装置。 在一个示例中，热保护闪烁器可以包括可以部分地围绕闪烁体晶体的闪烁体晶体和热保护元件。 热保护元件可以被配置为防止闪烁体晶体经历足以引起开裂或不均匀光输出的温度变化率，或其组合。

公开(公告)号：US06944548B2

公开(公告)日：2005-09-13

申请号：US10331747

申请日：2002-12-30

Applicant: Richard J. Radtke ,  Michael L. Evans ,  Robert A. Adolph ,  Loïc Vildé ,  Nihal Ian Wijeyesekera

Inventor： Richard J. Radtke ,  Michael L. Evans ,  Robert A. Adolph ,  Loïc Vildé ,  Nihal Ian Wijeyesekera

IPC: E21B47/026 ,  G01V5/10 ,  G01V5/12

CPC classification number: G01V5/104 ,  E21B47/026 ,  G01V5/125

Abstract: A method for formation logging includes acquiring measurements of neutron-induced signals having azimuthal information using a neutron tool; processing the measurements into a plurality of azimuthal sector data for each acquisition interval; and deriving a selected parameter from the plurality of azimuthal sector data. A logging tool includes a housing adapted to move in a borehole; a circuitry having memories for storing neutron-induced measurements; a neutron source disposed in the housing; and at least one detector bank disposed in the housing spaced apart from the neutron source, wherein each of the at least one detector bank comprises at least one detector disposed around a periphery of the housing such that the at least one detector is more sensitive to signals from an azimuthal direction, and wherein count rates detected by each of the at least one detector are separately stored in the memories.

Abstract translation: 用于地层测井的方法包括采用中子工具获取具有方位信息的中子诱导信号的测量; 将测量值处理为每个采集间隔的多个方位扇区数据; 以及从所述多个方位角扇区数据中导出所选择的参数。 测井工具包括适于在钻孔中移动的壳体; 具有用于存储中子诱导测量的存储器的电路; 设置在壳体中的中子源; 以及设置在所述壳体中与所述中子源间隔开的至少一个检测器组，其中所述至少一个检测器组中的每一个包括围绕所述壳体的外围设置的至少一个检测器，使得所述至少一个检测器对信号更敏感 并且其中由所述至少一个检测器中的每一个检测到的计数率分别存储在所述存储器中。

公开(公告)号：US06754586B1

公开(公告)日：2004-06-22

申请号：US10249297

申请日：2003-03-28

Applicant: Robert A. Adolph ,  Loïc Vildé

Inventor： Robert A. Adolph ,  Loïc Vildé

IPC: G01V5101

CPC classification number: G01V5/10

Abstract: Techniques for monitoring a pulsed neutron source include measuring a burst count rate while the pulsed neutron source is turned on using a monitor detector disposed proximate the pulsed neutron source; measuring a decay count rate while the neutron source is turned off using the monitor detector; and deriving a source strength indicator from the burst count rate and the decay count rate. A pulsed neutron tool includes a tool body; a pulsed neutron source disposed in the tool body; a monitor detector disposed in the tool body proximate the pulsed neutron source; at least one measurement detector disposed in the tool body at a predetermined distance from the pulsed neutron source; and circuitry disposed in the tool body for controlling the pulsed neutron source, the monitor detector, and the at least one measurement detector.

Abstract translation: 用于监测脉冲中子源的技术包括在使用靠近脉冲中子源设置的监视器检测器来打开脉冲中子源时测量脉冲串计数率; 使用监视器检测器测量中子源关闭时的衰减计数率; 并从突发计数率和衰减计数率导出源强度指示符。 脉冲中子工具包括工具主体; 设置在工具主体中的脉冲中子源; 监视器检测器，设置在靠近脉冲中子源的工具主体中; 至少一个测量探测器，设置在与脉冲中子源预定距离的工具主体中; 以及设置在所述工具主体中用于控制所述脉冲中子源，所述监视器检测器和所述至少一个测量检测器的电路。

公开(公告)号：US06649906B2

公开(公告)日：2003-11-18

申请号：US09932502

申请日：2001-08-17

Applicant: Robert A. Adolph ,  Loïc Vildé ,  Nancy S. Borkowski ,  Patrick J. Fisseler

Inventor： Robert A. Adolph ,  Loïc Vildé ,  Nancy S. Borkowski ,  Patrick J. Fisseler

IPC: G01V508

CPC classification number: G01V5/101

Abstract: A method is disclosed for operating a well logging tool having a controllable radiation source operatively coupled to a power source. The method includes monitoring at least one condition in a wellbore, and operatively disconnecting the power source from the radiation source when the at least one condition changes. Also disclosed is a downhole measurement assembly, which includes a radiation source, a power source, and at least one interlock operatively connected between the power source and the radiation source, where the at least one interlock is adapted to selectively arm and disarm the radiation source.

公开(公告)号：US5699246A

公开(公告)日：1997-12-16

申请号：US532133

申请日：1995-09-22

Applicant: Ronald E. Plasek ,  Christian Stoller ,  Robert A. Adolph

Inventor： Ronald E. Plasek ,  Christian Stoller ,  Robert A. Adolph

IPC: E21B47/00 ,  G01V5/10 ,  G01V11/00 ,  E21B49/00 ,  G01V1/28 ,  G01V1/30 ,  G01V1/32

CPC classification number: G01V5/101 ,  E21B47/00 ,  G01V11/00

Abstract: The present invention provides a new method to determine corrected characteristics of materials using the measured quantities obtained by a measurement and an extensive set of database points representing laboratory and modeled results in well defined environments. In particular the invention relates to the measurement of the characteristics of the formation around a wellbore as well as of the borehole with a well logging tool. Using a dynamic parametrization technique, the environmental corrections and the transformations from the measured to the physical characteristics can be achieved in a more accurate, robust and flexible way. The dynamic local parametrization is based on a weighted multiple linear regression over the entire database to obtain the local coefficients for the transformation which can be expressed as a simple equation.

Abstract translation: 本发明提供了一种用于通过测量获得的测量量和广泛的数据库点来确定材料的校正特性的新方法，所述数据库点表示在明确定义的环境中的实验室和建模结果。 特别地，本发明涉及使用测井工具测量围绕井眼以及井眼的地层的特征。 使用动态参数化技术，可以以更准确，稳健和灵活的方式实现环境校正和从测量到物理特性的转换。 动态局部参数化是基于整个数据库上的加权多元线性回归，以获得可以表示为简单方程的变换的局部系数。

公开(公告)号：US20140145072A1

公开(公告)日：2014-05-29

申请号：US14116315

申请日：2012-05-17

Applicant: Robert A. Adolph

Inventor： Robert A. Adolph

IPC: G01T1/36 ,  G01V5/12 ,  G01V5/10

CPC classification number: G01T1/40 ,  G01T1/362 ,  G01T1/366 ,  G01V5/101 ,  G01V5/12

Abstract: Disclosed herein is a system for fast gain regulation in a gamma-ray spectroscopy instrument. The system includes a detector configured to generate a signal indicative of energy arriving at the detector, and a processor configured to determine one or more system performance indicators. The system also includes a controller configured to compute a first gain correction term based on one of more system performance indicators and change the device gain based on the computed first gain correction tem.

Abstract translation: 本文公开了一种用于γ射线光谱仪器中快速增益调节的系统。 该系统包括被配置为产生指示到达检测器的能量的信号的检测器，以及被配置为确定一个或多个系统性能指标的处理器。 该系统还包括控制器，该控制器被配置为基于更多系统性能指标之一计算第一增益校正项，并且基于所计算的第一增益校正度改变器件增益。

公开(公告)号：US20090219028A1

公开(公告)日：2009-09-03

申请号：US12040272

申请日：2008-02-29

Applicant: Luke T. Perkins ,  Peter Wraight ,  Wolfgang P. Ziegler ,  Robert A. Adolph

Inventor： Luke T. Perkins ,  Peter Wraight ,  Wolfgang P. Ziegler ,  Robert A. Adolph

IPC: G01V3/18 ,  H05H3/06

CPC classification number: H05H3/06 ,  G01V5/10

Abstract: A method for operating a pulsed neutron generator includes adjusting a target current of the neutron generator to a preselected value. A parameter related to a neutron output of the neutron generator is measured. A target voltage of the neutron generator is adjusted to maintain the measured parameter within a predetermined range.

Abstract translation: 用于操作脉冲中子发生器的方法包括将中子发生器的目标电流调节到预选值。 测量与中子发生器的中子输出有关的参数。 调整中子发生器的目标电压以将测量参数保持在预定范围内。