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公开(公告)号：US08822912B2
公开(公告)日：2014-09-02
申请号：US13720677
申请日：2012-12-19
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen , Irina Molodetsky , Kenneth E. Stephenson
CPC classification number: H01J27/08
Abstract: An ion source includes a cathode to emit electrons, a cathode grid downstream of the cathode, a reflector electrode downstream of the cathode grid, reflector grid radially inward of the reflector electrode, and an extractor electrode downstream of the reflector electrode, the extractor electrode and cathode grid defining an ionization region therebetween. The cathode and the cathode grid have a first voltage difference such the electrons are accelerated through the cathode grid and into the ionization region on a trajectory toward the extractor electrode. The reflector grid and the extractor electrode have a second voltage difference less than the first voltage difference such that the electrons slow as they near the extractor electrode and are repelled on a trajectory toward the reflector electrode. The reflector electrode has a negative potential such that the electrons are repelled away from the reflector electrode and into the ionization region.
Abstract translation: 离子源包括发射电子的阴极，阴极下游的阴极栅极，阴极栅极下游的反射器电极，反射器电极的径向内侧的反射器栅极和反射器电极下游的提取器电极，提取器电极和 阴极栅极限定其间的电离区域。 阴极和阴极栅极具有第一电压差，使得电子通过阴极栅极加速并进入到提取器电极的轨迹上的电离区域。 反射器栅格和提取器电极具有小于第一电压差的第二电压差，使得电子随着它们靠近提取器电极而减慢并且在朝向反射器电极的轨迹上被排斥。 反射器电极具有负电位，使得电子被反射离开反射器电极并进入电离区域。
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公开(公告)号：US11310898B2
公开(公告)日：2022-04-19
申请号：US16722769
申请日：2019-12-20
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen
Abstract: A apparatus may include a power supply to receive a first voltage potential and output a second voltage potential that is greater than the first voltage potential and a cathode emitter to emit ions in response to application of the second voltage potential. The apparatus may also include a step down transformer to receive the second voltage potential and output a third voltage potential that is less than the second voltage potential. The apparatus may also include a heating element to, in response to application of the third voltage potential, heat the cathode emitter and lower a work function of the cathode emitter.
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公开(公告)号：US20210195721A1
公开(公告)日：2021-06-24
申请号：US16722769
申请日：2019-12-20
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen
Abstract: A apparatus may include a power supply to receive a first voltage potential and output a second voltage potential that is greater than the first voltage potential and a cathode emitter to emit ions in response to application of the second voltage potential. The apparatus may also include a step down transformer to receive the second voltage potential and output a third voltage potential that is less than the second voltage potential. The apparatus may also include a heating element to, in response to application of the third voltage potential, heat the cathode emitter and lower a work function of the cathode emitter.
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公开(公告)号：US20200348441A1
公开(公告)日：2020-11-05
申请号：US16932344
申请日：2020-07-17
Applicant: Schlumberger Technology Corporation
Inventor： Matthieu Simon , Jani Reijonen
IPC: G01V5/08 , E21B41/00 , H05H5/06 , H05H5/04 , E21B47/017
Abstract: A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.
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公开(公告)号：US10718880B2
公开(公告)日：2020-07-21
申请号：US16203867
申请日：2018-11-29
Applicant: Schlumberger Technology Corporation
Inventor： Matthieu Simon , Jani Reijonen
Abstract: A downhole tool may include a voltage multiplier within a housing. The voltage multiplier may transform input power to the downhole tool from a first voltage to a second voltage higher than the first. The downhole tool may also include multiple shielding rings surrounding at least the voltage multiplier to reduce electric field stresses within the downhole tool. Additionally, the downhole tool may include an insulator located between the shielding rings and the housing.
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Patent Agency Ranking
公开(公告)号：US20160133428A1
公开(公告)日：2016-05-12
申请号：US14539685
申请日：2014-11-12
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen
CPC classification number: G01V5/04 , G01V5/125 , H01J35/00 , H01J35/02 , H01J35/025 , H01J35/04 , H01J35/045 , H01J35/14 , H01J35/16 , H01J35/32
Abstract: A radiation generator may include an elongate generator housing having a proximal end and a distal end, a target electrode within the elongate generator housing at the distal end thereof, a charged particle source within the elongate generator housing at the proximal end thereof to direct charged particles at the target electrode. A plurality of accelerator electrodes may be spaced apart within the elongate generator housing between the target electrode and the charged particle source to define a charged particle accelerator section. Each accelerator electrode may include an annular portion having a first opening therein, and a frustoconical portion having a base coupled to the first opening of the annular portion and having a second opening so that charged particles from the charged particle source pass through the first and second openings to reach the target electrode.
Abstract translation: 辐射发生器可以包括具有近端和远端的细长的发生器壳体，在其远端处的细长发生器壳体内的靶电极，在其近端处的细长发生器壳体内的带电粒子源以引导带电粒子 在目标电极处。 多个加速器电极可以在细长发生器壳体内在目标电极和带电粒子源之间间隔开，以限定带电粒子加速器部分。 每个加速器电极可以包括其中具有第一开口的环形部分和截头圆锥形部分，其具有联接到环形部分的第一开口的基部，并且具有第二开口，使得带电粒子源的带电粒子通过第一和第二 开口到达目标电极。
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公开(公告)号：US09053893B2
公开(公告)日：2015-06-09
申请号：US13829697
申请日：2013-03-14
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen , Frederic Gicquel , Joel L. Groves , Peter Wraight , Kenneth E. Stephenson
CPC classification number: H01J27/024 , G21G4/02
Abstract: A radiation generator includes an insulator, with an ion source carried within the insulator and configured to generate ions and indirectly generate undesirable particles. An extractor electrode is carried within the insulator downstream of the ion source and has a first potential. An intermediate electrode is carried within the insulator downstream of the extractor electrode at a ground potential and is shaped to capture the undesirable conductive particles. In addition, a suppressor electrode is carried within the insulator downstream of the intermediate electrode and has a second potential opposite in sign to the first potential. A target is carried within the insulator downstream of the suppressor electrode. The extractor electrode and the suppressor electrode have a voltage therebetween such that an electric field generated in the insulator accelerates the ions generated by the ion source toward the target.
Abstract translation: 辐射发生器包括绝缘体，其中离子源承载在绝缘体内并被配置成产生离子并间接产生不期望的颗粒。 提取器电极承载在离子源下游的绝缘体内并具有第一电位。 中间电极承载在提取器电极下游的绝缘体的地电势处，并且成形为捕获不期望的导电颗粒。 此外，抑制电极被承载在中间电极下游的绝缘体内，并且具有与第一电位相反的第二电位。 目标在绝缘子的下游被保持在抑制电极的下游。 提取器电极和抑制电极之间具有电压，使得在绝缘体中产生的电场将离子源产生的离子朝向目标物加速。
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公开(公告)号：US20140263996A1
公开(公告)日：2014-09-18
申请号：US13829697
申请日：2013-03-14
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Jani Reijonen , Frederic Gicquel , Joel L. Groves , Peter Wraight , Kenneth E. Stephenson
CPC classification number: H01J27/024 , G21G4/02
Abstract: A radiation generator includes an insulator, with an ion source carried within the insulator and configured to generate ions and indirectly generate undesirable particles. An extractor electrode is carried within the insulator downstream of the ion source and has a first potential. An intermediate electrode is carried within the insulator downstream of the extractor electrode at a ground potential and is shaped to capture the undesirable conductive particles. In addition, a suppressor electrode is carried within the insulator downstream of the intermediate electrode and has a second potential opposite in sign to the first potential. A target is carried within the insulator downstream of the suppressor electrode. The extractor electrode and the suppressor electrode have a voltage therebetween such that an electric field generated in the insulator accelerates the ions generated by the ion source toward the target.
Abstract translation: 辐射发生器包括绝缘体，其中离子源承载在绝缘体内并被配置成产生离子并间接产生不期望的颗粒。 提取器电极承载在离子源下游的绝缘体内并具有第一电位。 中间电极承载在提取器电极下游的绝缘体的地电势处，并且成形为捕获不期望的导电颗粒。 此外，抑制电极被承载在中间电极下游的绝缘体内，并且具有与第一电位相反的第二电位。 目标在绝缘子的下游被保持在抑制电极的下游。 提取器电极和抑制电极之间具有电压，使得在绝缘体中产生的电场将离子源产生的离子朝向目标加速。
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公开(公告)号：US11566495B2
公开(公告)日：2023-01-31
申请号：US16723222
申请日：2019-12-20
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen , Giovana Stefan , Austin Jones , Matthieu Simon , Anthony Durkowski , Marc-Andre de Looz , Justin Mlcak
Abstract: A downhole tool may include a high-voltage power supply disposed within a housing to transform input power to the downhole tool from a first voltage to a second voltage greater than the first voltage. The high-voltage power supply may include an array of capacitors, which may include multiple rows of capacitors. The rows of capacitors may be parallel with a symmetric cross section as viewed from an end of the array of capacitors. The high-voltage power supply may also include diodes electrically coupled to the array of capacitors.
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公开(公告)号：US20210195723A1
公开(公告)日：2021-06-24
申请号：US16722887
申请日：2019-12-20
Applicant: Schlumberger Technology Corporation
Inventor： Jani Reijonen , Vincent Ernst
Abstract: The present disclosure relates to a downhole tool that includes a first photon flux detector disposed at a first radial position about a longitudinal axis of the downhole tool that measures a first signal indicative of an x-ray flux of the x-ray photons. The downhole tool also includes a second photon flux detector disposed at a second radial position about the longitudinal axis of the downhole tool that measures a second signal indicative of the x-ray flux of the x-ray photons. Further, the downhole tool includes a controller communicatively coupled to the first photon flux detector and the second photon flux detector that determines a condition associated with the electron beam based at least in part on a relative x-ray flux from the first photon flux detector and the second photon flux detector.
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