公开(公告)号：US09394781B2

公开(公告)日：2016-07-19

申请号：US14281945

申请日：2014-05-20

Applicant: Schlumberger Technology Corporation

Inventor： Matthieu Simon ,  Peter Wraight ,  Christian Stoller ,  Kenneth E. Stephenson ,  Andrew Bazarko

IPC: G01V5/12 ,  E21B47/00 ,  G01V5/04 ,  G01N23/083

CPC classification number: G01V5/125 ,  E21B17/16 ,  E21B47/00 ,  E21B49/00 ,  G01N23/083 ,  G01V5/04 ,  G01V5/12

Abstract: Logging-while-drilling tools incorporating an electronic radiation generator, such as an electronic X-ray generator, and a method for using the same are provided. One example of such a logging-while-drilling tool may include a circumferential drill collar, a chassis disposed radially interior to the drill collar, and an electronic X-ray generator and an X-ray detector disposed within the chassis. The electronic X-ray generator may emit X-rays out of the logging-while-drilling tool into a subterranean formation. The X-ray detector may detect X-rays that return to the logging-while-drilling tool after scattering in the subterranean formation, which may be used to determine a density and/or a lithology of the subterranean formation.

Abstract translation: 提供了包括诸如电子X射线发生器的电子辐射发生器的同时钻孔工具及其使用方法。 这种钻井测井工具的一个例子可以包括圆周钻铤，径向设置在钻铤内部的底盘，以及设置在底盘内的电子X射线发生器和X射线探测器。 电子X射线发生器可以将X射线从测井钻井工具中排出到地层中。 X射线检测器可以检测在地下地层散射之后返回到钻井测井工具的X射线，其可以用于确定地下岩层的密度和/或岩性。

公开(公告)号：US09335437B2

公开(公告)日：2016-05-10

申请号：US14325255

申请日：2014-07-07

Applicant: Schlumberger Technology Corporation

Inventor： Sicco Beekman ,  Tong Zhou ,  David Alan Rose ,  Christian Stoller

IPC: G01V5/10 ,  G01V5/12 ,  E21B47/00

CPC classification number: G01V5/102 ,  E21B47/00 ,  E21B47/1015 ,  G01V5/045 ,  G01V5/101 ,  G01V5/104 ,  G01V5/125

Abstract: A method for evaluating wellbore conduit condition includes using measurements of at least one of (i) inelastic gamma rays made during emission a burst of neutrons into the conduit from within the conduit at at least one spaced apart location from a position of the emission and (ii) epithermal neutrons or capture gamma rays therefrom detected at at least two spaced apart locations from the position of the emission within a selected time after the emission. The at least one of the measurements of inelastic gamma rays and epithermal neutron or capture gamma ray counts are characterized to estimate an amount of loss of iron in the conduit.

Abstract translation: 一种用于评估井眼导管状况的方法包括使用以下至少一种的测量：（i）在从发射位置的至少一个间隔开的位置处从导管内将中子爆发期间发射的中子期间产生的非弹性γ射线和（ ii）从发射之后的选定时间内在发射位置的至少两个间隔开的位置处检测到超热中子或捕获其γ射线。 非弹性γ射线和超热中子或捕获伽马射线计数的测量中的至少一个的特征在于估计导管中铁的损失量。

公开(公告)号：US09217325B2

公开(公告)日：2015-12-22

申请号：US13969591

申请日：2013-08-18

Applicant: Schlumberger Technology Corporation

Inventor： Laurent Villegas ,  Christopher S. Del Campo ,  Christian Stoller

IPC: G01V3/00 ,  G01V3/18 ,  E21B47/09 ,  G01V5/10 ,  G01V5/12 ,  E21B47/01

CPC classification number: E21B47/09 ,  E21B47/01 ,  G01V5/104 ,  G01V5/125

Abstract: Methods and systems for determining whether a tool has been deployed below a drill pipe are provided. A downhole tool can measure various characteristics, which then can be analyzed to determine the likelihood of a tool having been deployed below the drill pipe. For example, density and porosity measurements can be affected by the presence of casing or drill pipe, and thus such measurements can provide an indication of whether the tool has been deployed below the drill pipe.

Abstract translation: 提供了用于确定工具是否已部署在钻杆下方的方法和系统。 井下工具可以测量各种特性，然后可以对其进行分析，以确定工具已经部署在钻杆下方的可能性。 例如，密度和孔隙率的测量可能受套管或钻杆的存在的影响，因此这样的测量可以提供工具是否已经部署在钻杆下方的指示。

公开(公告)号：US20150285943A1

公开(公告)日：2015-10-08

申请号：US14434735

申请日：2013-10-11

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Christian Stoller ,  James A. Grau ,  Markus Berheide

IPC: G01V5/08 ,  E21B49/00

CPC classification number: G01V5/08 ,  E21B49/00 ,  G01N33/24

Abstract: A method for improving precision of measurement of material composition of formations determined by gamma ray spectral an analysis includes determining an accurate value of an amount of a selected by analyzing a spectrum of gamma rays detected from the formations using a technique that directly relates the gamma ray spectrum to the amount of the material. A precise value of the amount of the material is determined by analyzing the spectrum of detected gamma rays that indirectly relates the gamma ray spectrum to the amount of the material. A function relating the accurate value to the precise value over a selected axial interval along the wellbore is determined. The function is applied to the accurate value at at least one selected axial position along the wellbore to determine an accurate and precise value of the amount of the material.

Abstract translation: 用于提高由伽马射线光谱确定的地层的材料组成的测量精度的方法包括通过使用直接将伽马射线相关的技术来分析从地层检测的伽马射线的频谱来确定所选择的量的精确值 光谱到材料的量。 通过分析间接地将伽马射线谱与材料的量相关联的检测到的伽马射线的光谱来确定材料量的精确值。 确定沿着井眼将精确值与选定的轴向间隔上的精确值相关联的函数。 该功能应用于沿着井筒的至少一个选定的轴向位置处的精确值，以确定材料量的准确和精确的值。

公开(公告)号：US20150185358A1

公开(公告)日：2015-07-02

申请号：US14144871

申请日：2013-12-31

Applicant: Schlumberger Technology Corporation

Inventor： Christian Stoller ,  Fabien Haranger ,  James Grau ,  Jeffrey Miles ,  Markus Berheide

IPC: G01V5/10

CPC classification number: G01V5/101 ,  E21B47/00 ,  G01V5/10

Abstract: Composition-matched downhole tools and methods for using such tools are provided. One such method includes emitting neutrons using a neutron source in the downhole tool to generate formation gamma rays in a surrounding formation. At the same time, however, some of the neutrons may interact with different parts of the downhole tool to form tool gamma rays. The gamma ray spectra of at least some of the formation gamma rays and the tool gamma rays may be detected using a gamma ray detector. The tool gamma rays from the different parts of the tool may have a substantially similar spectral shape. As such, a processor may be used to analyze the spectra of the tool gamma rays using a single tool background standard, thereby simplifying the analysis and improving the precision of the results.

Abstract translation: 提供了组合匹配的井下工具和使用这种工具的方法。 一种这样的方法包括在井下工具中使用中子源发射中子，以在周围地层中产生地层γ射线。 然而，同时，一些中子可能与井下工具的不同部分相互作用，以形成工具伽马射线。 可以使用γ射线检测器检测至少一些形成γ射线和工具伽马射线的伽马射线光谱。 来自工具的不同部分的工具伽马射线可以具有基本相似的光谱形状。 因此，处理器可以用于使用单个工具背景标准来分析工具伽马射线的光谱，从而简化分析并提高结果的精度。

公开(公告)号：US20150124921A1

公开(公告)日：2015-05-07

申请号：US14072119

申请日：2013-11-05

Applicant: Schlumberger Technology Corporation

Inventor： Joel Groves ,  Christian Stoller

IPC: G01V5/12 ,  G21G4/02

CPC classification number: G21G4/02 ,  G01V5/101 ,  G01V5/125 ,  G01V5/145 ,  G21G4/04

Abstract: A method is for creating a gamma ray source downhole by creating a radioactive material through irradiation of an inert material by high energy neutrons, wherein the material to be activated may surround the neutron source in close proximity to form a compact gamma ray source. The gamma rays generated by the activation may be used to perform nuclear measurements downhole.

Abstract translation: 一种用于通过用高能中子照射惰性材料产生放射性材料来产生射线源的方法，其中待激活的材料可以围绕中子源紧邻形成紧凑的伽马射线源。 由激活产生的伽马射线可用于在井下执行核测量。

公开(公告)号：US20140325828A1

公开(公告)日：2014-11-06

申请号：US13829689

申请日：2013-05-01

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Christian Stoller

IPC: G01V13/00

CPC classification number: G01V5/04 ,  Y10T29/49002

Abstract: A method for making a well-logging tool for positioning in a wellbore of a geologic formation includes forming a radiation detector by securing a scintillator window and a scintillator housing together and joining together opposing ends of a photomultiplier housing and a scintillator housing. The method further includes securing the scintillator window to the scintillator housing with a brazed joint. The radiation detector is positioned within a well-logging housing.

Abstract translation: 用于制造用于定位在地质构造的井筒中的测井工具的方法包括通过将闪烁体窗和闪烁体壳固定在一起并将光电倍增管壳体和闪烁体壳体的相对端连接在一起来形成辐射检测器。 该方法还包括使用钎焊接头将闪烁体窗口固定到闪烁体外壳。 放射线检测器位于测井外壳内。

公开(公告)号：US20140263997A1

公开(公告)日：2014-09-18

申请号：US13829818

申请日：2013-03-14

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： Christian Stoller

IPC: G01T1/20 ,  G01V13/00 ,  G01V5/04

CPC classification number: G01V5/04 ,  G01T1/20 ,  G01V13/00 ,  Y10T29/49002

Abstract: A radiation detector is used in a well-logging tool for positioning in a wellbore of a geologic formation. The radiation detector includes a photomultiplier housing and a scintillator housing. A housing coupler joins together opposing ends of the photomultiplier housing and scintillator housing. A photomultiplier is contained within the photomultiplier housing and a scintillator body is contained within the scintillator housing. A scintillator window is secured to the housing coupler.

Abstract translation: 辐射探测器用于测井工具，用于定位在地质构造的井眼中。 辐射检测器包括光电倍增管壳体和闪烁体壳体。 外壳耦合器将光电倍增管壳体和闪烁体壳体的相对端连接在一起。 光电倍增器包含在光电倍增管外壳内，闪烁体包含在闪烁体外壳内。 闪烁体窗口固定到壳体耦合器。

公开(公告)号：US20140097336A1

公开(公告)日：2014-04-10

申请号：US14103878

申请日：2013-12-12

Applicant: Schlumberger Technology Corporation

Inventor： Michael L. Evans ,  Christian Stoller

IPC: G01V5/14

CPC classification number: G01V5/145 ,  G01V5/14

Abstract: An apparatus can measure characteristics of a formation surrounding a borehole. The apparatus includes a tool body having a neutron measurement section and a density measurement section. The neutron measurement section includes a neutron source and a neutron detector arrangement spaced in an axial direction from the neutron source. The density measurement section includes a gamma ray source and a gamma ray detector arrangement spaced in an axial direction from the gamma ray source. The neutron measurement section and the density measurement section are positioned in the tool body so that the sections overlap in the axial direction and are azimuthally spaced apart in the tool body. The tool body also includes shielding to block a direct signal path from the neutron source to the gamma ray detector arrangement and to block a direct signal path from the gamma ray source to the neutron detector arrangement.

Abstract translation: 设备可以测量围绕钻孔的地层的特征。 该装置包括具有中子测量部分和密度测量部分的工具主体。 中子测量部分包括在中子源的轴向上间隔开的中子源和中子探测器。 密度测量部分包括在伽马射线源的轴向上间隔开的伽马射线源和伽马射线检测器装置。 中子测量部分和密度测量部分位于工具主体中，使得部分在轴向方向上重叠并且在工具主体中在方位角间隔开。 工具主体还包括屏蔽以阻挡从中子源到伽马射线检测器装置的直接信号路径，并且阻挡从伽马射线源到中子探测器装置的直接信号路径。

公开(公告)号：US20140090890A1

公开(公告)日：2014-04-03

申请号：US13969591

申请日：2013-08-18

Applicant: Schlumberger Technology Corporation

Inventor： Laurent Villegas ,  Christopher S. Del Campo ,  Christian Stoller

IPC: E21B47/09

CPC classification number: E21B47/09 ,  E21B47/01 ,  G01V5/104 ,  G01V5/125

Abstract: Methods and systems for determining whether a tool has been deployed below a drill pipe are provided. A downhole tool can measure various characteristics, which then can be analyzed to determine the likelihood of a tool having been deployed below the drill pipe. For example, density and porosity measurements can be affected by the presence of casing or drill pipe, and thus such measurements can provide an indication of whether the tool has been deployed below the drill pipe.

Abstract translation: 提供了用于确定工具是否已部署在钻杆下方的方法和系统。 井下工具可以测量各种特性，然后可以对其进行分析，以确定工具已经部署在钻杆下方的可能性。 例如，密度和孔隙率的测量可能受套管或钻杆的存在的影响，因此这样的测量可以提供工具是否已经部署在钻杆下方的指示。