公开(公告)号：US06307199B1

公开(公告)日：2001-10-23

申请号：US09310893

申请日：1999-05-12

Applicant: John E. Edwards ,  Robert A. Adolph ,  W. Robert Sloan

Inventor： John E. Edwards ,  Robert A. Adolph ,  W. Robert Sloan

IPC: G01V100

CPC classification number: E21B47/08 ,  G01V5/125

Abstract: A system is disclosed for compensating well logs for adverse effects of the borehole and near borehole formation effects. The system is configured primarily for processing logging-while-drilling (LWD) density measurements, and includes means for generating a one-dimensional density log which is corrected for adverse effects of logging tool standoff and “dipping” beds penetrated by the borehole. The system is, however, applicable to any type of LWD or other type of logging system which requires borehole corrections, and which responds to variations in formation properties in a plane perpendicular to the borehole. The system can also be modified to include LWD apparatus using sensors that require no borehole corrections, and only require corrections for dipping beds. The system is ideally suited for logging equipment using two sensors, but can be modified for use with single sensor systems or systems using more than two sensors.

Abstract translation: 公开了一种用于补偿测井的井筒的不利影响和近井眼形成效应的系统。 该系统主要用于处理钻井测井（LWD）密度测量，并且包括用于生成一维密度测井的装置，其被校正用于测井工具分离的不利影响和钻孔渗透的“浸渍”床。 然而，该系统适用于需要钻孔校正的任何类型的LWD或其他类型的测井系统，其响应垂直于钻孔的平面中的地层特性的变化。 该系统也可以被修改为包括使用不需要钻孔校正的传感器的LWD装置，并且仅需要对浸渍床进行校正。 该系统非常适用于使用两个传感器记录设备，但可以修改为使用单个传感器系统或使用两个以上传感器的系统。

公开(公告)号：US5132540A

公开(公告)日：1992-07-21

申请号：US711599

申请日：1991-06-06

Applicant: Robert A. Adolph ,  Bradley A. Roscoe

Inventor： Robert A. Adolph ,  Bradley A. Roscoe

IPC: G01T1/17

CPC classification number: G01T1/171

Abstract: A nuclear spectroscopy method and apparatus for the analysis of a signal comprising pulses representative of random nuclear events, and for the determination of the dead time, including counting and recording, versus time, the accumulated counts of the pile-up events (PU), i.e. events identified as being characteristic of two or more overlapping events, and the counts of non pile-up events (NPU), for each of successive time intervals of a measurement cycle. Particularly the method includes: forming a preliminary reference plot of the PU count rates versus the NPU count rates; forming an actual plot corresponding to the signal under analysis, of PU count rates versus NPU count rates; and deducing the dead time from comparison between actual and reference plots. In an alternative embodiment, the method allows one to maintain constant the dead time, during the signal analysis, by: establishing a preliminary relationship between dead time and different plots of PU count rates versus NPU count rates; establishing a preliminary relationship between the plots and a functioning parameter; establishing a reference plot corresponding to an imposed dead time; establishing an actual plot; comparing the actual and reference plots; and modifying the functioning parameter so as to bring the respective actual and reference plots in compliance.

公开(公告)号：US08987670B2

公开(公告)日：2015-03-24

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: G01T1/20 ,  G01V5/00

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：US08594265B2

公开(公告)日：2013-11-26

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: G21G4/02 ,  G01V5/10 ,  H05H6/00

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。

公开(公告)号：US20090045328A1

公开(公告)日：2009-02-19

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：US06703606B2

公开(公告)日：2004-03-09

申请号：US09929680

申请日：2001-08-14

Applicant: Robert A. Adolph

Inventor： Robert A. Adolph

IPC: G01V510

CPC classification number: G01V5/107 ,  G01V5/104

Abstract: A method is disclosed for measuring neutron interaction properties of an earth formation. The method includes irradiating the formation with bursts of high energy neutrons. The bursts have a duration selected to enable detection of short duration burst related phenomena. After at least one of the bursts, short duration burst related phenomena are measured. After a selected number of the bursts, long duration neutron burst-related phenomena are detected. In some embodiments, the short duration burst related phenomena include at least one of inelastic gamma ray related phenomena, neutron slowing down related phenomena and short capture cross section related phenomena.

Abstract translation: 公开了一种用于测量地层的中子相互作用特性的方法。 该方法包括用高能中子的脉冲辐射地层。 脉冲串具有选择的持续时间以便能够检测短时间脉冲串相关现象。 在至少一个脉冲串之后，测量短时间脉冲串相关现象。 在选定数量的脉冲串之后，检测到长时间中子爆发相关现象。 在一些实施例中，短持续时间脉冲串相关现象包括非弹性γ射线相关现象，中子减慢相关现象和短捕获截面相关现象中的至少一个。

公开(公告)号：US5105080A

公开(公告)日：1992-04-14

申请号：US679468

申请日：1991-04-02

Applicant: Christian Stoller ,  Robert A. Adolph

Inventor： Christian Stoller ,  Robert A. Adolph

IPC: G01V5/10

CPC classification number: G01V5/104 ,  G01V5/101

Abstract: A apparatus and an apparatus for determining the respective contributions in spectroscopy measurements of the borehole and the earth formations surrounding the borehole, derived from the detection of gamma rays resulting from the collisions of neutrons with atoms of the formation or the borehole. From gamma rays from a near and far detector, and established, at each depth, responses (e.g. elemental yields) representative of the values of an unknown in the borehole and in the formation. The far detector response is plotted against the near detector response. From the plot and from known conditions of the detection, is derived a closed curve characteristic of the relative contributions of the borehole and the formation in the responses. For each depth, the respective values of the unknown are derived from the position on the plot of the couple of responses for that depth, with respect to the closed curve. For instance, on a plot of C/(C+O) yields, the curve is a parallelogram two concurrent sides of which form a coordinate system; the coordinates of each response corresponds to the values of the unknown respectively for the formation and the borehole.

Abstract translation: 一种装置和装置，用于确定由探测由中子与地层原子或井眼碰撞而产生的伽马射线的钻孔周围的钻孔和地层的光谱测量中的各自贡献。 来自近距离和远距离探测器的伽马射线，并且在每个深度处确定代表井眼和地层中未知物的值的响应（例如元素产量）。 远检测器响应相对于近检测器响应绘制。 从图的情况和已知的检测条件，得出了井眼的相对贡献和响应中的形成的闭合曲线特征。 对于每个深度，未知的相应值来自相对于闭合曲线的该深度的响应对的图上的位置。 例如，在C /（C + O）产量的曲线上，曲线是平行四边形，两个并列的边形成一个坐标系; 每个响应的坐标分别对应于地层和钻孔的未知值。

公开(公告)号：US09372271B2

公开(公告)日：2016-06-21

申请号：US14116315

申请日：2012-05-17

Applicant: Robert A. Adolph

Inventor： Robert A. Adolph

IPC: G01V1/04 ,  G01T1/36 ,  G01T1/40 ,  G01V5/10 ,  G01V5/12

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：US06696684B2

公开(公告)日：2004-02-24

申请号：US10034476

申请日：2001-12-28

Applicant: Richard J. Radtke ,  Robert A. Adolph ,  Hélène C. Climent ,  Luca Ortenzi

Inventor： Richard J. Radtke ,  Robert A. Adolph ,  Hélène C. Climent ,  Luca Ortenzi

IPC: G01V504

CPC classification number: G01V5/125

Abstract: A method for tool path identification in formation evaluation includes obtaining measurements of formation properties in azimuthal sectors for each of a plurality of depth levels; calculating quality factors from the measurements; identifying a centroid or maximum of the quality factors among the measurements in each of the azimuthal sectors for each depth level; and associating the centroid or maximum of the quality factors at each depth level along a borehole to form the tool path. Calculating the quality factors may include parameterizing the measurements according to at least one factor selected from a spine factor, a rib factor, and a volumetric photoelectric factor. A method for determining corrected measurements for formation properties includes identifying a tool path from measurements taken in azimuthal sectors at each depth level along a borehole; and calculating a corrected measurement at the each depth level by averaging measurements in the azimuthal sectors adjacent the tool path.

Abstract translation: 在地层评价中用于工具路径识别的方法包括获得多个深度级中的每一个的方位角扇区中的地层特性的测量; 从测量中计算质量因子; 在每个深度级的每个方位角扇区中测量质量因子的质心或最大值; 并且沿着钻孔将每个深度级的质量因子的质心或最大值相关联以形成工具路径。 计算质量因子可以包括根据从脊柱因子，肋因子和体积光电因子中选择的至少一个因素来参数化测量。 用于确定用于地层性质的校正测量的方法包括从沿着钻孔的每个深度级的方位角段中进行的测量中识别刀具路径; 以及通过对与所述刀具路径相邻的所述方位区域中的测量进行平均，来计算所述每个深度级的校正测量值。

公开(公告)号：US06648083B2

公开(公告)日：2003-11-18

申请号：US10040701

申请日：2001-10-26

Applicant: Michael Evans ,  Richard J Radtke ,  W Robert Sloan ,  Robert A Adolph

Inventor： Michael Evans ,  Richard J Radtke ,  W Robert Sloan ,  Robert A Adolph

IPC: E21B4900

CPC classification number: E21B49/00 ,  E21B47/00

Abstract: A method is disclosed for determining a characteristic of a mud mixture surrounding a drilling tool within a borehole in which a drilling tool is received. The method includes turning the tool in the borehole. Energy is applied into the borehole from an energy source disposed in the tool. Measurement signals are received at a sensor disposed in the tool from a location around the borehole. The cross-section of the borehole is separated into at least a first sector and a second sector. A first measurement signal from the first sector is substantially in response to returning energy which results from the interaction of the applied energy with the mud mixture. A second measurement signal from the second sector is substantially in response to returning energy which results from the interaction of the applied energy with the formation. An indication of an intrinsic characteristic of the mud mixture is derived from the first measurement signals associated with the first sector of the borehole.