公开(公告)号：US20150241577A1

公开(公告)日：2015-08-27

申请号：US14571604

申请日：2014-12-16

Applicant: Schlumberger Technology Corporation

Inventor： Timothy Spillane ,  Zilu Zhou ,  Markus Berheide ,  Bradley Roscoe

IPC: G01T3/00 ,  G01V5/10 ,  G01T3/06

CPC classification number: G01V5/107 ,  G01T3/008

Abstract: A combined thermal neutron and epithermal neutron radiation detector includes a plurality of neutron detecting elements arranged such that a first set of the detecting elements is disposed closer to a source of neutron flux scatted from a material or formation to be analyzed than a second set of detecting elements. The neutron detecting elements have a material therein susceptible to capture of thermal neutrons for detection. Signal outputs of the first set of are interconnected and signal outputs of the second set are separately interconnected to provide a signal output corresponding to each of thermal neutron flux and epithermal neutron flux entering the detector.

Abstract translation: 组合的热中子和超热中子辐射检测器包括多个中子检测元件，其被布置成使得第一组检测元件设置成比要被分析的材料或地层散开的中子通量源比第二组检测 元素。 中子检测元件具有易于捕获用于检测的热中子的材料。 第一组的信号输出互连，第二组的信号输出分开互连，以提供对应于进入检测器的热中子通量和超热中子通量中的每一个的信号输出。

公开(公告)号：US20140319330A1

公开(公告)日：2014-10-30

申请号：US14352968

申请日：2012-10-18

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Markus Berheide ,  Bradley A. Roscoe ,  Jing Qian ,  Timothy Spillane ,  Irina Shestakova ,  Olivier G. Philip ,  Stefan Vajda

IPC: G01V5/10 ,  G01T3/06

CPC classification number: G01V5/107 ,  G01T1/202 ,  G01T3/06

Abstract: Embodiments described herein are directed to methods and neutron detectors for use in downhole and other oilfield applications. In particular, the neutron detector includes a scintillator formed at least partially from an elpasolite material. In a more specific embodiment, the scintillator is formed from a Cs2LiYCl6 (“CLYC”) material.

Abstract translation: 本文描述的实施例涉及用于井下和其它油田应用中的方法和中子探测器。 特别地，中子检测器包括至少部分地由堇青石材料形成的闪烁体。 在更具体的实施方案中，闪烁体由Cs2LiYCl6（“CLYC”）材料形成。

公开(公告)号：US20140124659A1

公开(公告)日：2014-05-08

申请号：US14127898

申请日：2012-06-26

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Markus Berheide ,  Bradley A. Roscoe ,  Jing Qian ,  Timothy Spillane

IPC: G01V5/10

CPC classification number: G01V5/10 ,  G01T3/06 ,  G01V5/107

Abstract: Borehole logging tools and systems that include a scintillator positioned to interact with scattered source neutrons that are received from a target formation. The scintillator emits luminescence in response to interaction with the scattered neutrons. The scintillator includes an aluminofluoride host material (e.g., LiCAF). In a specific embodiment, the aluminofluoride host material is doped with europium. In a further specific embodiment, a processor distinguishes scattered neutrons from gamma rays based upon identifying a peak within an output signal from the scintillator. In yet another specific embodiment, a system includes a first scintillator and a second scintillator. The processor subtracts luminescence generated by the second scintillator from luminescence generated by the first scintillator to identify a neutron response of the first scintillator.

Abstract translation: 钻孔测井工具和系统，其包括定位成与从靶层接收的散射源中子相互作用的闪烁体。 闪烁体响应于与分散中子的相互作用发射发光。 闪烁体包括氟化铝主体材料（例如LiCAF）。 在一个具体实施方案中，所述氟化铝主体材料掺杂有铕。 在另一特定实施例中，处理器基于识别来自闪烁体的输出信号内的峰值，将散射的中子与伽马射线区分开。 在又一具体实施例中，系统包括第一闪烁体和第二闪烁体。 处理器从由第一闪烁体产生的发光中减去由第二闪烁体产生的发光，以识别第一闪烁体的中子响应。

公开(公告)号：US10591630B2

公开(公告)日：2020-03-17

申请号：US15469722

申请日：2017-03-27

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Markus Berheide ,  Cornelis Huiszoon

IPC: G01V5/10

Abstract: A subsurface logging tool that is deployable in a wellbore that traverses a formation includes a gamma-ray scintillation detector with a thallium-based scintillator material. The scintillator material is suitable for high-temperature downhole environments (i.e., above 70° C.). As such, the scintillator material improves the performance of oilfield measurement(s) at temperatures above 70° C. and at least up to 175° C., when compared with the use of the other materials. The scintillator material may have an effective atomic number of at least sixty. The scintillator material may have the chemical formula Tl2LiY1-xCexCl6, where x is 0 to 1. Lithium (Li) may be partially or completely replaced by another alkali metal or by indium (In). Yttrium (Y) is partially or completely replaced by another rare earth element. Chlorine (Cl) is partially or completely replaced by another halide.

公开(公告)号：US10145979B2

公开(公告)日：2018-12-04

申请号：US15454458

申请日：2017-03-09

Applicant: Schlumberger Technology Corporation

Inventor： Bradley Albert Roscoe ,  James A. Grau ,  Zilu Zhou ,  Kenneth E. Stephenson ,  Markus Berheide

IPC: G01V5/08 ,  G01V5/12 ,  G01V5/10 ,  G01T1/20 ,  G01T1/208

Abstract: Methods and related systems are described for gamma-ray detection. A gamma-ray detector is made depending on its properties and how those properties are affected by the data analysis. Desirable properties for a downhole detector include; high temperature operation, reliable/robust packaging, good resolution, high countrate capability, high density, high Z, low radioactive background, low neutron cross-section, high light output, single decay time, efficiency, linearity, size availability, etc. Since no single detector has the optimum of all these properties, a downhole tool design preferably picks the best combination of these in existing detectors, which will optimize the performance of the measurement in the required environment and live with the remaining non-optimum properties. A preferable detector choice is one where the required measurement precision (logging speed) is obtained for all of the required inelastic elements and/or minimization of unwanted background signals that complicate the data analysis.

公开(公告)号：US20180275309A1

公开(公告)日：2018-09-27

申请号：US15469722

申请日：2017-03-27

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Markus Berheide ,  Cornelis Huiszoon

IPC: G01V5/10

Abstract: A subsurface logging tool that is deployable in a wellbore that traverses a formation includes a gamma-ray scintillation detector with a thallium-based scintillator material. The scintillator material is suitable for high-temperature downhole environments (i.e., above 70° C.). As such, the scintillator material improves the performance of oilfield measurement(s) at temperatures above 70° C. and at least up to 175° C., when compared with the use of the other materials. The scintillator material may have an effective atomic number of at least sixty. The scintillator material may have the chemical formula Tl2LiY1-xCexCl6, where x is 0 to 1. Lithium (Li) may be partially or completely replaced by another alkali metal or by indium (In). Yttrium (Y) is partially or completely replaced by another rare earth element. Chlorine (Cl) is partially or completely replaced by another halide.

公开(公告)号：US09897718B2

公开(公告)日：2018-02-20

申请号：US15104354

申请日：2014-12-17

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Marie-Laure Mauborgne ,  Ahmed Amine Mahjoub ,  Markus Berheide ,  Christian Stoller

IPC: G01V5/10

CPC classification number: G01V5/101

Abstract: Methods and downhole tools involving neutron-absorbing gamma ray windows are provided. One such method involves emitting neutrons from a neutron source in a downhole tool in a well into a surrounding geological formation. This may produce formation gamma rays through interactions between the neutrons and elements of the geological formation. The formation gamma rays may be detected by a gamma ray detector when the gamma rays pass via a gamma ray window that includes a neutron-absorbing material disposed in a substrate material of the downhole tool. The gamma ray window may be both more transmissive of gamma rays than the substrate material and less transmissive of neutrons than a window without the neutron-absorbing material. This may decrease a neutron flux that would otherwise reach the gamma ray detector and the tool materials surrounding it and thus would otherwise lead to a background signal contaminating a signal corresponding to the detected formation gamma rays.

公开(公告)号：US20170184759A1

公开(公告)日：2017-06-29

申请号：US15454458

申请日：2017-03-09

Applicant: Schlumberger Technology Corporation

Inventor： Bradley Albert Roscoe ,  James A. Grau ,  Zilu Zhou ,  Kenneth E. Stephenson ,  Markus Berheide

IPC: G01V5/12 ,  G01T1/20 ,  G01V5/10

CPC classification number: G01V5/125 ,  G01T1/20 ,  G01T1/208 ,  G01V5/08 ,  G01V5/101 ,  G01V5/102 ,  G01V5/105

Abstract: Methods and related systems are described for gamma-ray detection. A gamma-ray detector is made depending on its properties and how those properties are affected by the data analysis. Desirable properties for a downhole detector include; high temperature operation, reliable/robust packaging, good resolution, high countrate capability, high density, high Z, low radioactive background, low neutron cross-section, high light output, single decay time, efficiency, linearity, size availability, etc. Since no single detector has the optimum of all these properties, a downhole tool design preferably picks the best combination of these in existing detectors, which will optimize the performance of the measurement in the required environment and live with the remaining non-optimum properties. A preferable detector choice is one where the required measurement precision (logging speed) is obtained for all of the required inelastic elements and/or minimization of unwanted background signals that complicate the data analysis.

公开(公告)号：US20160320521A1

公开(公告)日：2016-11-03

申请号：US15104354

申请日：2014-12-17

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Marie-Laure Mauborgne ,  Ahmed Amine Mahjoub ,  Markus Berheide ,  Christian Stoller

IPC: G01V5/10

CPC classification number: G01V5/101

Abstract: Methods and downhole tools involving neutron-absorbing gamma ray windows are provided. One such method involves emitting neutrons from a neutron source in a downhole tool in a well into a surrounding geological formation. This may produce formation gamma rays through interactions between the neutrons and elements of the geological formation. The formation gamma rays may be detected by a gamma ray detector when the gamma rays pass via a gamma ray window that includes a neutron-absorbing material disposed in a substrate material of the downhole tool. The gamma ray window may be both more transmissive of gamma rays than the substrate material and less transmissive of neutrons than a window without the neutron-absorbing material. This may decrease a neutron flux that would otherwise reach the gamma ray detector and the tool materials surrounding it and thus would otherwise lead to a background signal contaminating a signal corresponding to the detected formation gamma rays.

Abstract translation: 提供了涉及中子吸收伽马射线窗的方法和井下工具。 一种这样的方法包括从井中的井下工具中的中子源发射中子到周围的地质层。 这可能通过中子和地质构造元素之间的相互作用产生形成γ射线。 伽马射线通过包括设置在井下工具的基底材料中的中子吸收材料的伽马射线窗口时，伽马射线检测器可以检测形成γ射线。 与没有中子吸收材料的窗口相比，伽马射线窗口可以比衬底材料更能够透射伽马射线，并且对中子的透射较少。 这可能会降低否则会到达伽马射线探测器和围绕它的工具材料的中子通量，从而否则会导致背景信号污染对应于检测到的地层伽马射线的信号。

公开(公告)号：US09217793B2

公开(公告)日：2015-12-22

申请号：US13660916

申请日：2012-10-25

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Zilu Zhou ,  Bradley A. Roscoe ,  Markus Berheide ,  Joshua Wayne Gibson

IPC: H01J47/00 ,  G01T1/185 ,  G01T3/00

CPC classification number: G01T1/185 ,  G01T3/008

Abstract: Apparatus and method for detecting radiation-of-interest, such as neutron radiation, employs a gas chamber, a gas that responds to ionizing particles by producing electrons and ions, a cathode that attracts ions, and a supporting layer with a conductive pathway. The conductive pathway collects electrons and responds to electrons that drift towards the conductive pathway by inducing production of further electrons and ions within the gas. The electrons that are collected at the conductive pathway and/or the ions that drift away from the conductive pathway will induce an electrical signal, which can be used to detect the radiation-of-interest.

Abstract translation: 用于检测诸如中子辐射的感兴趣的放射线的装置和方法采用气室，通过产生电子和离子来响应电离粒子的气体，吸引离子的阴极和具有导电路径的支撑层。 导电路径收集电子并响应于通过在气体内产生另外的电子和离子而向导电路径漂移的电子。 在导电路径处收集的电子和/或从导电路径漂移的离子将引起电信号，其可用于检测感兴趣的辐射。