公开(公告)号：USRE38129E1

公开(公告)日：2003-06-03

申请号：US09934808

申请日：2001-08-22

申请人： Robert L. Kleinberg

发明人： Robert L. Kleinberg

IPC分类号： E21B4710

CPC分类号： E21B49/081 ,  G01N33/2823

摘要： An improved method of fluid analysis in the borehole of a well. A fluid sampling tool is fitted with a pumpout module that can be used to draw fluids from the formation, circulate them through the instrument, and then expel this fluid to the borehole. It has been determined that certain measurements would be most valuable to implement down hole, such as the formation fluid bubble point and dew point. Accurate bubble point and dew point measurements are made by forming bubbles or a liquid drop in a measured sample, and detecting same.

摘要翻译： 井的钻孔中流体分析的改进方法。 流体采样工具装有可用于从地层抽取流体的循环模块，将其循环通过仪器，然后将该流体排出到钻孔中。 已经确定，某些测量对于实施井下（例如地层流体泡点和露点）将是最有价值的。 通过在测量样品中形成气泡或液滴并进行检测，可以进行准确的气泡点和露点测量。

公开(公告)号：US06563314B1

公开(公告)日：2003-05-13

申请号：US09247834

申请日：1999-02-10

申请人： Robert L. Kleinberg

发明人： Robert L. Kleinberg

IPC分类号： G01V300

CPC分类号： G01N24/081 ,  G01V3/32

摘要： A method for determining the nuclear magnetic resonance longitudinal magnetization decay of formations surrounding an earth borehole that involves: providing a logging device moveable through the borehole; applying a static magnetic field in the formations to align spins in the formations in the direction of the static magnetic field; producing a tipping pulse for tipping the direction of the spins with respect to the static magnetic field direction; and detecting the time varying magnitude of the spin magnetization as the magnetization returns toward the static magnetic field direction; the longitudinal magnetization decay being determinable from the detected time varying magnitude of the spin magnetization. Related methods and apparatus for implementing these methods are also described.

摘要翻译： 一种用于确定围绕地球钻孔的地层的核磁共振纵向磁化衰减的方法，其涉及：提供可通过钻孔移动的测井装置; 在地层中施加静磁场，以在静磁场的方向上将地层中的自旋对准; 产生相对于静磁场方向倾斜自旋方向的倾翻脉冲; 并且当磁化朝向静磁场方向返回时，检测自旋磁化的时变幅度; 纵向磁化衰减可以根据检测到的自旋磁化的时间变化幅度来确定。 还描述了用于实现这些方法的相关方法和装置。

公开(公告)号：US5055788A

公开(公告)日：1991-10-08

申请号：US431256

申请日：1989-12-05

申请人： Robert L. Kleinberg ,  Douglas D. Griffin ,  Masafumi Fukuhara ,  Abdurrahman Sezginer

发明人： Robert L. Kleinberg ,  Douglas D. Griffin ,  Masafumi Fukuhara ,  Abdurrahman Sezginer

IPC分类号： G01R33/34 ,  G01R33/38 ,  G01R33/44 ,  G01V3/32

CPC分类号： G01V3/32 ,  G01N24/081 ,  G01R33/341 ,  G01R33/3808 ,  G01R33/3671 ,  G01R33/443 ,  G01R33/448

摘要： Borehole NMR logging apparatus and methods, and methods for the interpretation thereof. A logging tool is provided which produces a strong, static and homogeneous magnetic field B.sub.0 in a Volume of an adjacent formation on one side of the tool to measure nuclear magnetic resonance characteristics thereof. In the preferred embodiment, the tool has an RF antenna mounted on the outside of the metal body of the tool, directing focussed oscillating magnetic fields B.sub.1 at said Volume to polarize or tip the Magnetic moments of hydrogen nuclei of fluids within rock pores. The same antenna can be used to receive signals of proton precession in the Volume of interest immediately after transmission of the RF polarizing field B.sub.1. Extremely rapid damping of the antenna between the transmitting and receiving modes of operation is accomplished by a Q-switch disclosed herein. The invention provides for the direct measurement of NMR decay having transverse relaxation time T.sub.2 behavior, and further provides for the fast repetition of pulsed measurements from within a borehole. An additional magnet array may be mounted offset from the first magnet configuration to prepolarize a formation before it is measured in order to pre-align a larger number of protons than the single magnet configuration could do by itself. Additional features of the invention are disclosed which increase the Signal/Noise ratio of the measured data, and improve the quality and quantity of borehole NMR measurements, per unit of time spent. Disclosed interpretation methods determine fluid flow permeability and longitudinal relaxation time T.sub.1 -type parameters by directly comparing the measured decay signals (such as T.sub.2 or T.sub.2 * type decay) to a representation which responds to both the decay time t.sub.dec and the imposed polarization period prior to such decay, t.sub.poi. The parameters of amplitude and T.sub.1 are determined and combined with certain preferred methods to generate robust values of the formation characteristics such as fluid flow permeability. Other related methods are disclosed.

公开(公告)号：US4641724A

公开(公告)日：1987-02-10

申请号：US511415

申请日：1983-07-06

申请人： Edward Y. Chow ,  Robert L. Kleinberg

发明人： Edward Y. Chow ,  Robert L. Kleinberg

IPC分类号： G01V1/44 ,  G01V1/40 ,  E21B49/00 ,  G01V1/00

CPC分类号： G01V1/44

摘要： In the apparatus and method of the invention, acoustic energy is propagated in two slightly differing, or offset, circumferential paths in such a way as to interact with the formation under investigation. The propagating energy is detected and the resulting waveforms are compared using semblance. The waveforms corresponding to the respective paths will be quite similar provided that the length of the paths are equal and that there are no fractures or other similar anomalies between the source and receiver. The waveforms for the respective paths will be quite dissimilar, however, if a fracture or similar anomaly does lie between the source and receiver for the respective paths. The semblance may be displayed in log format.

摘要翻译： 在本发明的装置和方法中，声能以两个稍微不同或偏移的周向路径传播，以便与正在研究的地层相互作用。 检测传播能量，并使用相似度对所得到的波形进行比较。 对应于相应路径的波形将非常相似，条件是路径的长度相等，并且源和接收器之间不存在断裂或其他类似的异常。 然而，对于相应路径，如果在源和接收器之间存在断裂或类似的异常，则相应路径的波形将是非常不相似的。 外观可以以日志格式显示。