公开(公告)号：US20130234706A1

公开(公告)日：2013-09-12

申请号：US13774487

申请日：2013-02-22

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： SOUMYAJIT MANDAL ,  YI-QIAO SONG ,  SHIN UTSUZAWA ,  MARC THOMPSON

IPC: G01R33/28 ,  G01V3/32

CPC classification number: G01R33/46 ,  G01N24/081 ,  G01R33/28 ,  G01R33/3621 ,  G01R33/3808 ,  G01R33/445 ,  G01V3/32

Abstract: A broadband magnetic resonance (MR) receiver is described herein. The MR receiver can be used to process nuclear magnetic resonance (NMR) signals. The MR receiver includes a transformer that amplifies the MR signals and a preamplifier that receives the MR signals from the transformer. The preamplifier includes a common-drain amplifier stage and a common-source amplifier stage.

Abstract translation: 本文描述了宽带磁共振（MR）接收机。 MR接收机可用于处理核磁共振（NMR）信号。 MR接收机包括放大MR信号的变压器和从变压器接收MR信号的前置放大器。 前置放大器包括共漏极放大器级和公共源放大级。

公开(公告)号：US20130234705A1

公开(公告)日：2013-09-12

申请号：US13774457

申请日：2013-02-22

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： SOUMYAJIT MANDAL ,  SHIN UTSUZAWA ,  YI-QIAO SONG

IPC: G01R33/46

CPC classification number: G01R33/46 ,  G01N24/081 ,  G01R33/28 ,  G01R33/3621 ,  G01R33/3808 ,  G01R33/445 ,  G01V3/32

Abstract: A method and system for applying nuclear magnetic resonance (NMR) sequences to a substance are described herein. The method includes applying an NMR pulse sequence to the substance using a non-resonant transmitter circuit. The NMR pulse sequence includes a first pulse sequence segment applied at a first frequency to a first shell within the substance and a second pulse sequence segment applied at a second frequency to a second shell. The second pulse sequence segment is initiated before the first shell reaches thermal equilibrium. In some cases, the first pulse sequence segment and the second pulse sequence segment are interposed within each other. Such NMR pulse sequences, with multiple pulse sequence segments, can also be applied to different atomic nuclei.

Abstract translation: 本文描述了将核磁共振（NMR）序列应用于物质的方法和系统。 该方法包括使用非谐振发射器电路将NMR脉冲序列应用于物质。 NMR脉冲序列包括以第一频率施加到物质内的第一壳体的第一脉冲序列片段和以第二频率施加到第二壳体的第二脉冲序列片段。 第二个脉冲序列段在第一个壳达到热平衡之前启动。 在一些情况下，第一脉冲序列段和第二脉冲序列段彼此插入。 具有多个脉冲序列片段的NMR脉冲序列也可以应用于不同的原子核。

公开(公告)号：US20150260813A1

公开(公告)日：2015-09-17

申请号：US14213887

申请日：2014-03-14

Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION

Inventor： SOUMYAJIT MANDAL ,  SHIN UTSUZAWA ,  YI-QIAO SONG

IPC: G01R33/46 ,  G01V3/34 ,  G01R33/36 ,  G01V3/14

CPC classification number: G01R33/3621 ,  G01N24/081 ,  G01R33/3614 ,  G01V3/32

Abstract: A magnetic resonance (MR) receiver is described herein. The MR receiver can be used to process nuclear magnetic resonance (NMR) signals. The MR receiver includes a transformer that amplifies the MR signals and a preamplifier that receives the MR signals from the transformer. The preamplifier can include a transimpedance amplifier circuit with an input stage that includes a field effect transistor.

Abstract translation: 本文描述了磁共振（MR）接收机。 MR接收机可用于处理核磁共振（NMR）信号。 MR接收机包括放大MR信号的变压器和从变压器接收MR信号的前置放大器。 前置放大器可以包括具有包括场效应晶体管的输入级的跨阻抗放大器电路。