公开(公告)号：US20180210095A1

公开(公告)日：2018-07-26

申请号：US15862695

申请日：2018-01-05

Applicant: Schlumberger Technology Corporation

Inventor： Ken Stephenson ,  Peter Wraight ,  Wolfgang Ziegler ,  John J. Simonetti ,  Christian Stoller ,  Irina Molodetsky

IPC: G01T1/202 ,  H01J40/18 ,  G01T1/20 ,  G01V5/04

CPC classification number: G01T1/2023 ,  G01T1/2006 ,  G01V5/04 ,  H01J40/18

Abstract: A scintillator type radiation detector package is provided including a scintillation crystal directly coupled to the window of a photomultiplier. A scintillator package is also provided having a longer life at wellbore temperature with minimal deterioration of a hygroscopic scintillation crystal(s). Direct optical coupling of the scintillator to the photomultiplier reduces the amount of light lost at coupling interfaces and improved detection resolution over the conventional structures having separate packages for crystal and photomultiplier.

公开(公告)号：US20170226848A1

公开(公告)日：2017-08-10

申请号：US15500717

申请日：2015-07-31

Applicant: Schlumberger Technology Corporation

Inventor： Vincent Chatelet ,  Axel Quignard ,  Peter Wraight ,  Jean-Pierre Poyet ,  Fabien Nibodeau ,  Luke Perkins

IPC: E21B47/12 ,  G01V5/10

CPC classification number: E21B47/122 ,  E21B47/12 ,  G01V5/10 ,  G01V11/002

Abstract: An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.

公开(公告)号：US20160143123A1

公开(公告)日：2016-05-19

申请号：US14543806

申请日：2014-11-17

Applicant: Schlumberger Technology Corporation

Inventor： Joel L. Groves ,  Peter Wraight

IPC: H05H3/00 ,  G01V5/10

CPC classification number: H05H3/00 ,  H05H3/06

Abstract: Systems, methods, and apparatuses to identify functional issues of a neutron radiation generator are described. In certain aspects, a method includes receiving an operation extractor signal from an extractor electrode of a radiation generator, determining a calculated extractor signal of the radiation generator, and comparing the operation extractor signal to the calculated extractor signal. The calculated extractor signal may be determined from an operation acceleration signal from an acceleration member of the radiation generator, an operation electron beam signal from electrons backstreaming in the radiation generator, an ion signal of an ion beam of the radiation generator, or a combination thereof.

Abstract translation: 描述了识别中子辐射发生器的功能问题的系统，方法和装置。 在某些方面，一种方法包括从辐射发生器的提取器电极接收操作提取器信号，确定计算出的辐射发生器的提取器信号，并将操作提取器信号与所计算的提取器信号进行比较。 计算出的提取器信号可以根据来自辐射发生器的加速构件的操作加速度信号，来自在辐射发生器中向后流动的电子的操作电子束信号，辐射发生器的离子束的离子信号或其组合来确定 。

公开(公告)号：US20150362618A1

公开(公告)日：2015-12-17

申请号：US14303295

申请日：2014-06-12

Applicant: Schlumberger Technology Corporation

Inventor： Peter Wraight

IPC: G01V5/10

CPC classification number: G01V5/104

Abstract: A method includes emitting a burst of neutrons having a first duration into earth formations. Neutrons are detected at a first position spaced apart from the emitting in two time intervals following the burst. After a selected delay time, a second duration neutron burst is emitted into the formations. Gamma rays are detected in selected time intervals following the second burst. The detected neutrons in the two time intervals are used to calculate a thermal neutron capture cross section. Gamma rays detected at the first position in following the second duration burst are used to determine an apparent formation thermal neutron capture cross section and to adjust a time interval for each of the first duration, the second duration and the starting time thereof for detecting gamma rays. The estimated wellbore thermal neutron capture cross section is used to determine an apparent formation thermal neutron capture cross section.

Abstract translation: 一种方法包括将具有第一持续时间的中子爆发发射到地层中。 在与突发之后的两个时间间隔内的发射间隔开的第一位置处检测中子。 在选定的延迟时间之后，将第二持续时间的中子脉冲串发射到地层中。 在第二次突发之后的选定时间间隔内检测伽马射线。 在两个时间间隔内检测到的中子用于计算热中子俘获截面。 用于跟随第二持续时间脉冲串在第一位置处检测到的伽马射线用于确定表观地层热中子俘获截面并且调整用于检测伽马射线的第一持续时间，第二持续时间和开始时间中的每一个的时间间隔 。 估计的井筒热中子捕获截面用于确定表观地层热中子捕获截面。

公开(公告)号：US09129770B2

公开(公告)日：2015-09-08

申请号：US13830401

申请日：2013-03-14

Applicant: Schlumberger Technology Corporation

Inventor： Luke Perkins ,  Benjamin Levitt ,  Peter Wraight ,  Arthur D. Liberman

IPC: G21G4/02 ,  H01J27/02 ,  H01J27/16 ,  H01J27/20

CPC classification number: H01J27/205 ,  G21G4/02 ,  H01J27/02 ,  H01J27/08 ,  H01J27/16

Abstract: An ion source for use in a radiation generator includes a sealed envelope containing an ionizable gas therein. The ion source also includes a RF antenna external to the sealed envelope, the RF antenna to transmit time-varying electromagnetic fields within the sealed envelope for producing ions from the ionizable gas. There is at least one extractor within the sealed envelope having a potential such that the ions are attracted toward the at least one extractor.

Abstract translation: 用于辐射发生器的离子源包括其中含有可电离气体的密封外壳。 离子源还包括在密封外壳外部的RF天线，RF天线用于传输密封外壳内的时变电磁场，用于从可电离气体产生离子。 密封外壳内有至少一个提取器具有使得离子被吸引到至少一个提取器的电位。

公开(公告)号：US20150168592A1

公开(公告)日：2015-06-18

申请号：US14635430

申请日：2015-03-02

Applicant: Schlumberger Technology Corporation

Inventor： Christian Stoller ,  Peter Wraight ,  Bradley A. Roscoe

IPC: G01V5/10

CPC classification number: G01V5/102

Abstract: Systems and methods for measuring neutron-induced activation gamma-rays in a subterranean formation are provided. In one example, a downhole tool for measuring neutron-induced activation gamma-rays may include a neutron source and a gamma-ray detector. The neutron source may emit neutrons according to a pulsing scheme that includes a delay between two pulses. The delay may be sufficient to allow substantially all neutron capture events due to the emitted neutrons to cease. The gamma-ray detector may be configured to detect activation gamma-rays produced when elements activated by the emitted neutrons decay to a non-radioactive state.

Abstract translation: 提供了用于测量地下地层中的中子诱导活化γ射线的系统和方法。 在一个示例中，用于测量中子诱导的激活γ射线的井下工具可以包括中子源和γ射线检测器。 中子源可以根据包括两个脉冲之间的延迟的脉冲方案发射中子。 延迟可能足以允许由于发射的中子停止而基本上所有的中子俘获事件。 γ射线检测器可以被配置为检测由发射的中子激活的元素衰变到非放射性状态时产生的激活γ射线。

公开(公告)号：US20140265858A1

公开(公告)日：2014-09-18

申请号：US13830437

申请日：2013-03-14

Applicant: Schlumberger Technology Corporation

Inventor： Luke Perkins ,  Benjamin Levitt ,  Peter Wraight ,  Arthur D. Liberman

IPC: H01J27/02

CPC classification number: H01J27/024

Abstract: An ion source for use in a radiation generator includes an active cathode configured to emit electrons on a trajectory away from the active cathode, at least some of the electrons as they travel interacting with an ionizable gas to produce ions. In addition, there is at least one extractor downstream of the active cathode having a potential such that the ions are attracted toward the at least one extractor.

Abstract translation: 用于辐射发生器的离子源包括被配置为在远离有源阴极的轨迹上发射电子的活性阴极，当它们与可电离气体相互作用以产生离子时，至少一些电子。 此外，在活性阴极的下游存在至少一个提取器，其具有使得离子被吸引到至少一个提取器的电位。

公开(公告)号：US10174608B2

公开(公告)日：2019-01-08

申请号：US15500717

申请日：2015-07-31

Applicant: Schlumberger Technology Corporation

Inventor： Vincent Chatelet ,  Axel Quignard ,  Peter Wraight ,  Jean-Pierre Poyet ,  Fabien Nibodeau ,  Luke Perkins

IPC: E21B47/12 ,  G01V5/10

Abstract: An installation for intervention in a well, comprises a lower assembly comprising a neutron generator and a power source electrically connected to the neutron generator; a surface assembly comprising one or more safety devices, each safety device being either in a safe state or an unsafe state; and a communication module that connects the lower and surface assemblies. The surface assembly also comprises a surface transmitting device for transmitting data to the downhole assembly via the communication module including a first transmitter for transmitting an activating command, where the first transmitter transmits the activating command only if each of the safety device is in a safe state, and a second transmitter for transmitting a stopping command, where the second transmitter transmits the stopping command if one of the safety device is in an unsafe state.

公开(公告)号：US20180261349A1

公开(公告)日：2018-09-13

申请号：US15952277

申请日：2018-04-13

Applicant: Schlumberger Technology Corporation

Inventor： Luke T. Perkins ,  Christian Stoller ,  Peter Wraight

IPC: G21G4/02 ,  H05H3/06

CPC classification number: G21G4/02 ,  G01V5/10 ,  H01J35/00 ,  H01J35/04 ,  H01J35/14 ,  H01J2235/023 ,  H05G1/02 ,  H05G1/10 ,  H05H3/06

Abstract: Disclosed is a radiation logging tool, comprising a tool housing; a compact generator that produces radiation; a power supply coupled to the compact generator; and control circuitry. Embodiments of the compact generator comprise a generator vacuum tube comprising a source generating charged particles, and a target onto which the charged particles are directed; and a high voltage supply comprising a high voltage multiplier ladder located laterally adjacent to the generator vacuum tube. The high voltage supply applies a high voltage between the source and the target to accelerate the charged particles to a predetermined energy level. The compact generator also includes an electrical coupling between an output of the high voltage supply and the target of the generator vacuum tube to accommodate the collocated positions of the generator vacuum tube and the high voltage power supply.

公开(公告)号：US20160306070A1

公开(公告)日：2016-10-20

申请号：US15193849

申请日：2016-06-27

Applicant: Schlumberger Technology Corporation

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

IPC: G01V5/12 ,  E21B17/16 ,  E21B49/00

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。