公开(公告)号：US20040119471A1

公开(公告)日：2004-06-24

申请号：US10696995

申请日：2003-10-30

Applicant: Baker Hughes Incorporated

Inventor： Martin Blanz ,  Thomas Kruspe

IPC: G01V003/00

CPC classification number: E21B49/00 ,  E21B49/08 ,  G01N24/081 ,  G01R33/281 ,  G01R33/5601 ,  G01R33/5605 ,  G01R33/5617 ,  G01R33/62 ,  G01V3/32

Abstract: An apparatus and method is discussed for characterizing a fluid sample downhole of aliphatic hydrocarbon compounds, aromatic hydrocarbon compound, or connate mud filtrates containing carbon-13 isotopes using an enhanced nuclear magnetic resonance (NMR) signal on a measurement-while-drilling device. To enhance the carbon-13 NMR signal these nuclei are being hyperpolarized. Either the Overhauser Effect (OE) or the Nuclear Overhauser Effect or optical pumping and the Spin Polarization Induced Nuclear Overhauser Effect (SPINOE) can serve as a mechanism for hyperpolarization of the carbon-13 nuclei.

Abstract translation: 讨论了一种装置和方法，用于在钻井测量装置上使用增强的核磁共振（NMR）信号来表征含有碳-13同位素的脂族烃化合物，芳烃化合物或原生泥浆滤液在井下的流体样品。 为了增强碳-13 NMR信号，这些核正在被超极化。 Overhauser效应（OE）或核超越效应或光泵浦和旋转极化诱导的核超越效应（SPINOE）可以作为碳-13核超极化的机制。

公开(公告)号：US20030151408A1

公开(公告)日：2003-08-14

申请号：US10132986

申请日：2002-04-26

Applicant: Baker Hughes Incorporated

Inventor： Thomas Kruspe ,  Martin Blanz ,  Peter Rottengatter

IPC: G01V003/00

CPC classification number: G01V3/32 ,  G01N24/081 ,  G01R33/343

Abstract: A loop-gap resonator for providing an excitation pulse in a down hole nuclear magnetic resonating (NMR) tool for determining a parameter of interest in a formation adjacent a borehole. The loop-gap resonator is constructed having one or more capacitive gaps formed in a nonmagnetic conductive loop. The loop-gap resonator may be deployed down a bore in a measurement while drilling (MWD) configuration or in a wire line configuration. The MWD configuration may utilize a non-rotating sleeve rotationally associated with the drill string.

Abstract translation: 一种用于在井下核磁共振（NMR）工具中提供激发脉冲的环形间隙谐振器，用于确定邻近钻孔的地层中的感兴趣参数。 环形间隙谐振器被构造成具有形成在非磁性导电环路中的一个或多个电容间隙。 环路间隙谐振器可以在钻孔（MWD）配置或线缆配置中在测量中的孔内部署下来。 MWD构造可以利用与钻柱旋转地相关联的非旋转套筒。

公开(公告)号：US20030038631A1

公开(公告)日：2003-02-27

申请号：US10177618

申请日：2002-06-20

Applicant: Baker Hughes Incorporated

Inventor： Thomas Kruspe ,  Arcady Reiderman ,  Martin Blanz ,  Peter Rottengatter

IPC: G01V003/00

CPC classification number: G01V3/32 ,  G01N24/081 ,  G01R33/34

Abstract: The present invention provides a novel use of a material having a high internal magnetostrictive damping and/ or using material with explicitly low magnetostriction as a NMR probe core material. The probe structural geometry facilitates the use of material, which has a relatively low magnetic permeability.

Abstract translation: 本发明提供具有高内磁致伸缩阻尼和/或使用具有明显低磁致伸缩的材料作为NMR探针芯材料的材料的新用途。 探头结构几何便于使用具有较低磁导率的材料。

公开(公告)号：US20030155915A1

公开(公告)日：2003-08-21

申请号：US10146534

申请日：2002-05-15

Applicant: Baker Hughes Incorporated

Inventor： Thomas Kruspe ,  Martin Blanz ,  Peter Rottengatter

IPC: G01V003/00

CPC classification number: G01R33/34053 ,  G01V3/32

Abstract: A slotted NMR antenna cover for improved mechanical ruggedness during transmission and reception of NMR signals in a down hole environment during either MWD or wire line operations. A NMR slotted antenna cover is provided comprising an elongated tubular structure with longitudinal gaps or slots filled with a RF transmissive or non-conductive material. The slots can befilled at the slot ends with soft magnetic material to improve efficiency of the antenna. The slots are radial concave to reduce eddy currents induced by alternating magnetic flux entering and leaving the slots surrounding the antenna. In another embodiment, the antenna cover is RF transmissive on only a portion of the antenna, via slots or transmissive material, so that the antenna cover can be used to allow RF transmission from the antenna in a side looking or beam pattern restricted mode only.

Abstract translation: 一个开槽的NMR天线盖，用于在MWD或线路操作期间在井下环境中传输和接收NMR信号期间改善机械坚固性。 提供了一种NMR开槽天线盖，其包括具有填充有RF透射或非导电材料的纵向间隙或狭缝的细长管状结构。 槽可以在槽端用软磁材料填充，以提高天线的效率。 槽是径向凹入的，以减少由交变磁通量进入和离开天线周围的槽引起的涡流。 在另一个实施例中，天线盖仅在天线的一部分上经由狭槽或透射材料进行RF透射，使得天线盖可用于仅允许来自天线的RF传输以侧视或波束模式限制模式。

公开(公告)号：US20030016013A1

公开(公告)日：2003-01-23

申请号：US10191153

申请日：2002-07-09

Applicant: BAKER HUGHES INCORPORATED.

Inventor： Thomas Kruspe ,  Martin Blanz ,  Peter Rottengatter ,  Holger F. Thern

IPC: G01V003/00

CPC classification number: G01R33/50 ,  G01V3/32

Abstract: NMR data are acquired with variable spacing between refocusing pulses, giving data with a variable interecho time TE. Under certain conditions, diffusion effects can be neglected and data acquired with a multiple TE spacing may be used to obtain a T2 distribution with increased resolution and reduced power requirements. In gas reservoirs, the maximum TE may be determined from diffusion considerations using a dual wait time pulse sequence and this maximum TE is used to acquire data with dual TE. By proper selection of TE, echos can be obtained with significantly reduced ringing.

公开(公告)号：US20020153136A1

公开(公告)日：2002-10-24

申请号：US10059565

申请日：2002-01-29

Applicant: Baker Hughes Incorporated

Inventor： Thomas Kruspe ,  Robert A. Slade ,  Martin Blanz ,  Peter Rottengatter ,  Hartmut Schrader ,  Rob Hawkes

IPC: E21B047/00 ,  E21B043/00

CPC classification number: G01V3/32 ,  E21B2041/0028

Abstract: A NMR device is presented that includes a drill collar having non-rotating sleeve containing permanent magnets. The non-rotating sleeve is clamped against a borehole wall and decoupled from drilling vibrations during NMR measurements. The transmitter and receiver are located on the rotating part of the drill collar. Alternatively the permanent magnets and the RF receiver antenna and/or receiver electronics are placed on the non-rotating sleeve which is clamped against the borehole wall and decoupled from drilling vibrations, with the transmitting antenna located on the rotating drill collar. Alternatively a non-rotating stabilizer is provided above or below a NMR sensor. A stabilizer is activated to stabilize the rotating NMR sensor located on the drilling collar in the bore hole. The permanent magnets and receiving and transmitting antennas are located on a non-rotating sleeve that is clamped against the borehole wall to decouple the permanent magnets and receiving and transmitting antennas from drilling vibrations.

Abstract translation: 提出了一种NMR装置，其包括具有包含永磁体的非旋转套筒的钻铤。 非旋转套筒被夹紧在钻孔壁上，并在NMR测量期间与钻孔振动解耦。 发射器和接收器位于钻铤的旋转部分上。 或者，永磁体和RF接收器天线和/或接收器电子器件放置在非旋转套筒上，该套筒被夹紧在钻孔壁上并与钻孔振动分离，发射天线位于旋转钻铤上。 或者，在NMR传感器的上方或下方设置非旋转稳定器。 激活稳定器以稳定位于钻孔中的钻铤上的旋转NMR传感器。 永久磁铁和接收和发射天线位于非旋转套筒上，该套筒抵靠钻孔壁夹紧，以使永磁体和接收和发射天线与钻孔振动分离。