公开(公告)号：US20090090505A1

公开(公告)日：2009-04-09

申请号：US12268856

申请日：2008-11-11

Applicant: Robert R. McDaniel ,  Cody Ryan Peeples ,  Robin Pierce Gardner

Inventor： Robert R. McDaniel ,  Cody Ryan Peeples ,  Robin Pierce Gardner

IPC: E21B47/00

CPC classification number: E21B43/26 ,  E21B47/044 ,  E21B47/1015 ,  G01V5/101

Abstract: A method for determining fracture geometry of a subterranean formation from radiation emitted from a fracture in the formation, including measuring gamma-radiation emitted from the fracture; subtracting background radiation from the measured gamma-radiation to obtain a peak-energy measurement; comparing the peak-energy measurement with a gamma-ray transport/spectrometer response model; and determining formation fracture geometry of the fracture in accordance with values associated with the response model.

Abstract translation: 一种用于从地层断裂发射的辐射确定地层的断裂几何形状的方法，包括测量从裂缝发射的γ辐射; 从测量的伽马辐射减去背景辐射以获得峰值能量测量; 将峰值能量测量与伽马射线输运/光谱仪响应模型进行比较; 并根据与响应模型相关联的值确定裂缝的地层裂缝几何形状。

公开(公告)号：US07372018B2

公开(公告)日：2008-05-13

申请号：US11189514

申请日：2005-07-26

Applicant: Darryl E. Trcka ,  Pingjun Guo ,  Steve Riley ,  Joseph Gregory Barolak ,  David M. Chace

Inventor： Darryl E. Trcka ,  Pingjun Guo ,  Steve Riley ,  Joseph Gregory Barolak ,  David M. Chace

IPC: G01V5/10

CPC classification number: G01V5/101

Abstract: A pulsed neutron tool with three or more detectors is used for making measurements inside casing. The measurements may be used to determine gas saturation at a constant gas pressure, pressure at constant gas saturation, or to determine both gas saturation and gas pressure.

Abstract translation: 具有三个或更多个检测器的脉冲中子工具用于在壳体内进行测量。 测量值可用于确定恒定气体压力，恒定气体饱和压力下的气体饱和度，或确定气体饱和度和气体压力。

公开(公告)号：US07339161B2

公开(公告)日：2008-03-04

申请号：US10906562

申请日：2005-02-24

Applicant: Richard J. Radtke ,  Arlene O. Siefker-Radtke ,  Christian Stoller

Inventor： Richard J. Radtke ,  Arlene O. Siefker-Radtke ,  Christian Stoller

IPC: G01V5/04

CPC classification number: G01V5/101 ,  G01V5/107 ,  G01V5/125

Abstract: Apparatus and method for detecting subsurface radiation phenomena. An elongated support member, adapted for disposal within a wellbore traversing a subsurface formation, includes a recess along its longitudinal axis. A pad is linked to the support member. The pad is configured with a surface correspondingly shaped to fit in juxtaposition with the support member recess. The pad is adapted for movement into and out of the recess such that an exposed surface of the pad can extend away from the support member. The pad also includes one or more radiation detectors and is adapted with shielding material on its sides near the exposed surface to prevent radiation reflected from the recess from reaching the detector(s) from the area near the exposed surface.

Abstract translation: 用于检测地下辐射现象的装置和方法。 适于在穿过地下地层的井筒内处理的细长支撑构件包括沿其纵向轴线的凹部。 衬垫连接到支撑构件。 衬垫被构造成具有相应形状的表面以与支撑构件凹部并置。 衬垫适于移动进入和离开凹部，使得垫的暴露表面可以远离支撑构件延伸。 衬垫还包括一个或多个辐射检测器，并且在其暴露表面附近的侧面上适配屏蔽材料，以防止从凹部反射的辐射从暴露表面附近的区域到达检测器。

公开(公告)号：US20070034793A1

公开(公告)日：2007-02-15

申请号：US11503688

申请日：2006-08-14

Applicant: Robert Estes ,  Rocco DiFoggio ,  Eric Molz ,  Constantyn Chalitsios ,  Philip Kurkoski

Inventor： Robert Estes ,  Rocco DiFoggio ,  Eric Molz ,  Constantyn Chalitsios ,  Philip Kurkoski

IPC: G01V5/08

CPC classification number: E21B47/024 ,  G01V5/101 ,  G01V5/107

Abstract: A photodiode whose long-wavelength cutoff is in the short-wavelength range (preferably, between ultraviolet and yellowish-green) having reduced temperature sensitivity is used in downhole applications. It may be matched with scintillation devices having an output matched to the response curve of the photodiode for use with nuclear logging devices. The photodiode may also be used in gyroscopes in which light from an LED matched to the photodiode is reflected from a spinning mass.

Abstract translation: 在井下应用中使用长波长截止在温度敏感度降低的短波长范围（优选在紫外线和黄绿色之间）的光电二极管。 它可以与具有与用于核测井装置的光电二极管的响应曲线匹配的输出的闪烁装置匹配。 光电二极管也可用在陀螺仪中，其中来自与光电二极管匹配的LED的光从旋转质量体反射。

公开(公告)号：US20070023624A1

公开(公告)日：2007-02-01

申请号：US11189455

申请日：2005-07-26

Applicant: Darryl Trcka ,  Steve Riley ,  Pingjun Guo

Inventor： Darryl Trcka ,  Steve Riley ,  Pingjun Guo

IPC: G01V5/10

CPC classification number: G01V5/101

Abstract: A pulsed neutron tool with three or more detectors is used for making measurements inside casing. The measurements may be used to determine gas saturation at a constant gas pressure, pressure at constant gas saturation, or to determine both gas saturation and gas pressure.

Abstract translation: 具有三个或更多个检测器的脉冲中子工具用于在壳体内进行测量。 测量值可用于确定恒定气体压力，恒定气体饱和压力下的气体饱和度，或确定气体饱和度和气体压力。

公开(公告)号：US07117092B2

公开(公告)日：2006-10-03

申请号：US10671351

申请日：2003-09-25

Applicant: Larry A. Jacobson

Inventor： Larry A. Jacobson

IPC: E21B47/00

CPC classification number: G01V5/101

Abstract: A method and related system of determining formation density by compensating actual inelastic gamma rays detected from a pulsed-neutron tool for the effects of neutron transport. The method and systems may model response of the tool and use the modeled response as an indication of an amount to compensate detected inelastic gamma rays.

Abstract translation: 一种通过补偿从脉冲中子工具检测的实际非弹性γ射线来确定中子运输效应的方法和相关系统。 方法和系统可以对工具的响应进行建模，并使用建模的响应作为补偿检测到的非弹性γ射线的量的指示。

公开(公告)号：US06766855B2

公开(公告)日：2004-07-27

申请号：US10209012

申请日：2002-07-31

Applicant: Ivan Snoga

Inventor： Ivan Snoga

IPC: G01V500

CPC classification number: E21B47/026 ,  G01V5/101

Abstract: A well logging system that has, as its goal, the collection of information normally acquired by a dip log tool based on conductivity or resistivity measurements, but with the advantages of radiation based well logging systems. Unlike conductivity based dip log systems, the radiation-based system can be implemented in cased or uncased boreholes. The combination system incorporates a number of radially arrayed devices that, though structurally distinct, function much like the arms associated with conductivity dip log devices. The system incorporates radiation detectors positioned in a radial array rather than electrodes. The combination system measures radiation in each of the multiple radial orientations and responds to generated radiation in the respective directions. The sensitivity of the radiation measuring devices is set so as to localize the region of the borehole being measured. Whereas standard radiation well logging systems are less concerned with localizing the measurement, the present system accurately identifies the orientation of the signal and thus the nature and angle of the formation the signal derives from.

Abstract translation: 作为其目标的测井系统，其目的是通过基于电导率或电阻率测量的浸渍测井工具通常获取的信息的收集，但具有基于辐射的测井系统的优点。 与基于电导率的倾斜对数系统不同，基于辐射的系统可以在套管或未经钻井的钻孔中实施。 组合系统包含许多径向排列的器件，尽管结构上不同，器件的功能非常类似于与电导率测井器件相关联的臂。 该系统包含位于径向阵列而不是电极的辐射探测器。 组合系统测量多个径向取向中的每一个中的辐射，并且响应于在相应方向上产生的辐射。 放射线测量装置的灵敏度被设定为定位被测井眼的区域。 鉴于标准的辐射测井系统较少关注测量的定位，本系统准确地识别信号的方向，从而准确地识别信号源自的形成的性质和角度。

公开(公告)号：US20020038849A1

公开(公告)日：2002-04-04

申请号：US09932502

申请日：2001-08-17

Inventor： Robert A. Adolph ,  Loic Vilde ,  Nancy S. Borkowski ,  Patrick J. Fisseler

IPC: G01V005/08

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.

Abstract translation: 公开了一种用于操作具有可操作地耦合到电源的可控辐射源的测井工具的方法。 该方法包括监测井眼中的至少一个状况，并且当至少一个状态改变时可操作地将电源与辐射源分离。 还公开了一种井下测量组件，其包括辐射源，电源以及可操作地连接在电源和辐射源之间的至少一个互锁，其中所述至少一个互锁适于选择性地将辐射源 。

公开(公告)号：US6150655A

公开(公告)日：2000-11-21

申请号：US36287

申请日：1998-03-06

Applicant: Richard Charles Odom ,  Shawn Marie Bailey

Inventor： Richard Charles Odom ,  Shawn Marie Bailey

IPC: G01V5/10 ,  G01V5/12

CPC classification number: G01V5/101

Abstract: A method for inferring the photoelectric absorption of a formation by directly mapping spectroscopic measurements of gamma rays induced in the formation using a fast neutron source. The mapping is accomplished by creating a polynomial function based on counts of gamma-ray events in the gamma-ray energy spectrum; the coefficients of the polynomial function are determined in known calibration environments, and the value of the polynomial is the inferred photoelectric absorption parameter. The spectroscopic measurements are preferably generated by sorting gamma-ray counts of the gamma-ray spectrum into a plurality of energy-dependent channels, and measuring these gamma-ray energy distributions during different portions of the firing cycle where different types of dominant gamma-ray production reactions occur.

Abstract translation: 一种用于通过使用快中子源直接映射在地层中诱导的γ射线的光谱测量来推断地层的光电吸收的方法。 该映射通过基于γ射线能谱中的伽马射线事件的计数创建多项式函数来实现; 在已知的校准环境中确定多项式函数的系数，多项式的值是推断的光电吸收参数。 光谱测量优选通过将伽马射线光谱的伽马射线计数分成多个能量相关通道来产生，并且在发射周期的不同部分期间测量这些伽马射线能量分布，其中不同类型的主γ射线 生产反应发生。

公开(公告)号：US5668369A

公开(公告)日：1997-09-16

申请号：US672318

申请日：1996-06-28

Applicant: Moustafa E. Oraby

Inventor： Moustafa E. Oraby

IPC: G01V5/10

CPC classification number: G01V5/101 ,  G01V5/107

Abstract: A system and method of determining porosity and water saturation of a formation surrounding a wellbore is disclosed. Well logs are taken to obtain near and far thermal and epithermal neutron log measurements, and to obtain pulsed neutron capture log measurements, at varying depths along the borehole, with the results stored in a computer memory. The computer is then operated, using an assumed porosity value, to calculate the matrix diffusion length according to two independent methods. If the two matrix diffusion lengths do not closely match, the assumed porosity value is adjusted, and the method repeated. Upon convergence of the matrix diffusion lengths, the adjusted assumed porosity value is used to determine the water saturation of the formation. A set of three equations in three unknowns is solved, where the three equations are indicative of the pulsed neutron capture cross-section, and also the near and far thermal neutron absorption. The water saturation of the formation is then determined, without requiring extrinsic data regarding the lithology of the matrix.

Abstract translation: 公开了一种确定井筒围绕地层孔隙度和水饱和度的系统和方法。 采集测井记录以获得接近和远的热和超热中子测井，并在钻孔的不同深度获得脉冲中子捕获测井，结果存储在计算机存储器中。 然后使用假设的孔隙度值计算机根据两种独立的方法来计算矩阵扩散长度。 如果两个矩阵扩散长度不紧密匹配，则调整假定的孔隙度值，并重复该方法。 在矩阵扩散长度收敛时，调整后的假定孔隙度值用于确定地层的水饱和度。 解决了三个未知数的三个方程组，其中三个方程表示脉冲中子俘获截面，以及近，远热中子吸收。 然后确定地层的水饱和度，而不需要关于基质的岩性的外在数据。