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1.发明申请公开(公告)号：US20190049617A1
公开(公告)日：2019-02-14
申请号：US15675575
申请日：2017-08-11
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Ravinath Kausik Kadayam Viswanathan , Yiqiao Song
Abstract: Nuclear magnetic resonance (NMR) methods and apparatus are provided for investigating a sample utilizing NMR pulse sequences. In various embodiments, the NMR pulse sequences have a solid state portion and a line-narrowing portion. In other embodiments, the NMR pulse sequences have a first line-narrowing portion and a second line-narrowing portion where the sequences of the different portions are different. In yet other embodiments, the NMR pulse sequences have a T1 portion and a line-narrowing portion. Processing of detected signals permits determination of characteristics of the sample including, in some cases, a differentiation of multiple components of the sample.
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Patent Agency Ranking
公开(公告)号：US20140035578A1
公开(公告)日：2014-02-06
申请号：US13952999
申请日：2013-07-29
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Yiqiao Song , Michael Wilt , Pabitra Sen
IPC: G01V3/32
CPC classification number: G01V3/32 , G01N24/08 , G01N24/081 , G01N24/085 , G01R33/3415 , G01R33/3621 , G01R33/445
Abstract: A nuclear magnetic resonance (NMR) system that uses a feedback induction coil to detect NMR signals generated within a substance is described herein. In one embodiment, the NMR system uses the Earth's magnetic field in conjunction with a transmitter coil that applies NMR sequences to a formation. The NMR sequences generate a weak NMR signal within the formation due to the weakness of the Earth's magnetic field. This weak NMR signal is detected using the feedback induction coil.
Abstract translation: 本文描述了使用反馈感应线圈来检测在物质内产生的NMR信号的核磁共振（NMR）系统。 在一个实施例中，NMR系统将地球磁场与发射机线圈结合使用，其将NMR序列应用于地层。 由于地球磁场的弱点，核磁共振序列在地层内产生一个较弱的核磁共振信号。 使用反馈感应线圈检测该弱核磁共振信号。
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公开(公告)号：US10724975B2
公开(公告)日：2020-07-28
申请号：US15675555
申请日：2017-08-11
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Ravinath Kausik Kadayam Viswanathan , Yiqiao Song
Abstract: Nuclear magnetic resonance (NMR) methods and apparatus are provided for investigating a sample utilizing NMR pulse sequences having solid state and CPMG pulse sequence portions. Various embodiments of solid state pulse sequences may be utilized including two-dimensional (repetitive) line-narrowing sequences. The hydrogen content of a solid portion of the sample may be determined by using one or more echoes resulting from the solid state sequence portion of the pulse sequence to establish a total organic hydrogen content of the sample, and by using a CPMG echo train to establish a fluid organic hydrogen content, and by subtracting one from the other to obtain the hydrogen content of the sample's solid portion. Additionally, or alternatively, the T2 values obtained from the line-narrowing and CPMG pulse sequences can be compared by plotting to obtain information regarding a characteristic of the sample. The NMR pulse sequence may also include a T1 portion.
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4.发明申请公开(公告)号：US20190049397A1
公开(公告)日：2019-02-14
申请号：US15675555
申请日：2017-08-11
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Ravinath Kausik Kadayam Viswanathan , Yiqiao Song
Abstract: Nuclear magnetic resonance (NMR) methods and apparatus are provided for investigating a sample utilizing NMR pulse sequences having solid state and CPMG pulse sequence portions. Various embodiments of solid state pulse sequences may be utilized including two-dimensional (repetitive) line-narrowing sequences. The hydrogen content of a solid portion of the sample may be determined by using one or more echoes resulting from the solid state sequence portion of the pulse sequence to establish a total organic hydrogen content of the sample, and by using a CPMG echo train to establish a fluid organic hydrogen content, and by subtracting one from the other to obtain the hydrogen content of the sample's solid portion. Additionally, or alternatively, the T2 values obtained from the line-narrowing and CPMG pulse sequences can be compared by plotting to obtain information regarding a characteristic of the sample. The NMR pulse sequence may also include a T1 portion.
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公开(公告)号：US10890685B2
公开(公告)日：2021-01-12
申请号：US15675575
申请日：2017-08-11
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Ravinath Kausik Kadayam Viswanathan , Yiqiao Song
Abstract: Nuclear magnetic resonance (NMR) methods and apparatus are provided for investigating a sample utilizing NMR pulse sequences. In various embodiments, the NMR pulse sequences have a solid state portion and a line-narrowing portion. In other embodiments, the NMR pulse sequences have a first line-narrowing portion and a second line-narrowing portion where the sequences of the different portions are different. In yet other embodiments, the NMR pulse sequences have a T1 portion and a line-narrowing portion. Processing of detected signals permits determination of characteristics of the sample including, in some cases, a differentiation of multiple components of the sample.
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公开(公告)号：US09715032B2
公开(公告)日：2017-07-25
申请号：US13952999
申请日：2013-07-29
Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
Inventor： Yiqiao Song , Michael Wilt , Pabitra Sen
IPC: G01N24/08 , G01R33/3415 , G01R33/44 , G01V3/32 , G01R33/36
CPC classification number: G01V3/32 , G01N24/08 , G01N24/081 , G01N24/085 , G01R33/3415 , G01R33/3621 , G01R33/445
Abstract: A nuclear magnetic resonance (NMR) system that uses a feedback induction coil to detect NMR signals generated within a substance is described herein. In one embodiment, the NMR system uses the Earth's magnetic field in conjunction with a transmitter coil that applies NMR sequences to a formation. The NMR sequences generate a weak NMR signal within the formation due to the weakness of the Earth's magnetic field. This weak NMR signal is detected using the feedback induction coil.
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