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公开(公告)号：US20160032708A1
公开(公告)日：2016-02-04
申请号：US14783244
申请日：2014-04-08
Inventor： Ahmed Amine Mahjoub , Sebastien Isambert , Emmanuel Fayeulle , Didier Fouillou , Michael L. Evans , Christian Stoller
CPC classification number: E21B47/011 , E21B17/1078
Abstract: A downhole tool operable for conveyance within a wellbore extending into a subterranean formation, and for obtaining one or more measurements of the subterranean formation, wherein the downhole tool comprises a sensor, a pressure housing containing the sensor and mounted on an external surface of the downhole tool, and a sliding stabilizer covering the pressure housing.
Abstract translation: 井下工具，其可操作用于在延伸到地下地层内的井筒内传送，并且用于获得地下地层的一个或多个测量值，其中所述井下工具包括传感器，包含所述传感器并安装在所述井下的外表面上的压力壳体 工具和覆盖压力壳体的滑动稳定器。
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公开(公告)号：US20160003025A1
公开(公告)日：2016-01-07
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: 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.
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公开(公告)号：US20150212230A1
公开(公告)日：2015-07-30
申请号：US14680731
申请日：2015-04-07
Applicant: Schlumberger Technology Corporation
Inventor： Christian Stoller
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。
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34.发明授权Well-logging apparatus including azimuthally-spaced, noble gas-based detectors 有权测井装置包括方位空间，惰性气体探测器公开(公告)号：US09052404B2
公开(公告)日：2015-06-09
申请号：US13728901
申请日：2012-12-27
Applicant: Schlumberger Technology Corporation
Inventor： Michael L. Evans , Avtandil Tkabladze , Christian Stoller
Abstract: A well-logging device may include a housing to be positioned within a borehole of a subterranean formation, and at least one radiation source carried by the housing to direct radiation into the subterranean formation. The well-logging device may also include noble gas-based radiation detectors carried by the housing in azimuthally spaced relation to detect radiation from the subterranean formation. A controller may determine at least one property of the subterranean formation based upon the detected radiation from the noble gas-based radiation detectors.
Abstract translation: 测井装置可以包括要定位在地下地层的钻孔内的壳体，以及由壳体承载以将辐射引导到地下地层中的至少一个辐射源。 测井装置还可以包括以方位角间隔的关系由壳体承载的惰性气体辐射探测器，以检测来自地下地层的辐射。 控制器可以基于来自稀有气体的辐射检测器的检测到的辐射来确定地下地层的至少一个性质。
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公开(公告)号：US09000359B2
公开(公告)日：2015-04-07
申请号：US13829818
申请日：2013-03-14
Applicant: Schlumberger Technology Corporation
Inventor： Christian Stoller
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。
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Patent Agency Ranking
公开(公告)号：US20250102699A1
公开(公告)日：2025-03-27
申请号：US18472435
申请日：2023-09-22
Applicant: Schlumberger Technology Corporation
Inventor： Christian Stoller
IPC: G01V5/10 , G01N23/2208 , G01N23/222 , G01V5/04
Abstract: A system may include one or more downhole tools, where a first downhole tool includes a pulsed neutron generator to emit neutrons into a borehole of a geological formation and one or more gamma-ray detectors to obtain a measurement of gamma-ray emissions, of a borehole environment, induced by the emitted neutrons. The system may also include data processing circuitry to determine a Sigma value associated with the borehole environment based on the measurement and determine elemental concentrations, excluding lithium, based on one or more gamma-ray energy spectra obtained via the one or more downhole tools. The data processing circuitry may also determine an elemental Sigma contribution of the elements other than lithium based on the elemental concentrations, determine a lithium Sigma contribution based on a difference between the Sigma value and the elemental Sigma contribution, and determine a lithium concentration within the borehole environment based on the lithium Sigma contribution.
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公开(公告)号：US11774629B2
公开(公告)日：2023-10-03
申请号：US17460825
申请日：2021-08-30
Applicant: Schlumberger Technology Corporation
Inventor： Pascal Millot , Adil Busaidy , Jeffrey Miles , Tong Zhou , Christian Stoller , David Rose , Richard Radtke
Abstract: A presence of cement may be identified based on a downhole tool that may emit neutrons into a wellbore having at least one cement casing. The neutrons may interact with the particular material via inelastic scattering, inelastic neutron reactions, capture of neutrons and/or neutron activation through one of these reactions and cause a material to emit an energy spectrum of gamma rays, and wherein the downhole tool is configured to detect an energy spectrum of the gamma rays that is specific to at least one of a plurality of elements and associated a region within the wellbore. An amount of elements, such as calcium and silicon, may be determined from the gamma ray spectra that may indicate a present of cement within the wellbore.
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公开(公告)号：US10365398B2
公开(公告)日：2019-07-30
申请号：US15145991
申请日：2016-05-04
Applicant: Schlumberger Technology Corporation
Inventor： Sicco Beekman , Tong Zhou , David Alan Rose , Christian Stoller
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.
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公开(公告)号：US10301934B2
公开(公告)日：2019-05-28
申请号：US14663158
申请日：2015-03-19
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Dominic Joseph Brady , Reza Taherian , Gary Oddie , Christian Stoller
Abstract: A downhole densitometer is used to determine one or more characteristics of a flowing fluid. The densitometer has one or more downhole x-ray sources and one or more downhole x-ray detectors. A fluid is allowed to flow past the x-ray sources. X-rays emitted by the x-ray sources and that have travelled through the flowing fluid are detected by the x-ray detectors. Characteristics of the flowing fluid are determined based on the detected x-rays. The densitometer may also have reference detectors used to measure a reference signal. The measured reference signal is used to normalize source emissions. The densitometer may be used as a permanent monitor and it may be used in conjunction with other sensors such as a flow-rate sensor or a capacitance sensor. The x-ray source may be, for example, a pyroelectric source, a radioisotopic source, or a traditional x-ray tube source.
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公开(公告)号：US10295700B2
公开(公告)日：2019-05-21
申请号：US15393793
申请日：2016-12-29
Applicant: Schlumberger Technology Corporation
Inventor： Sicco Beekman , Christian Stoller
IPC: G01V5/12
Abstract: A system for a downhole tool includes an X-ray generator that outputs X-ray radiation into a surrounding sub-surface formation using electrical power received from a power supply and a detector device adjacent the X-ray generator. The detector device includes a first detector with a first radiation sensitivity that outputs a first measurement signal based on interaction between a first portion of the X-ray radiation and the first detector. The detector device also includes a second detector with a second radiation sensitivity adjacent the first detector, where the second detector outputs a second measurement signal based on interaction between a second portion of the X-ray radiation and the second detector. Further, the detector device includes a control system communicatively coupled to the X-ray generator and the detector device, where the control system determines characteristics of the X-ray radiation output from the X-ray generator based at least in part on a radiation model that describes expected relationship between the characteristics of the X-ray radiation and doses indicated by the first measurement signal and the second measurement signal.
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