公开(公告)号：US5539225A

公开(公告)日：1996-07-23

申请号：US307894

申请日：1994-09-16

申请人： William A. Loomis ,  Kenneth E. Stephenson ,  Jerome A. Truax ,  Wolfgang P. Ziegler ,  S. Zema Chowdhuri ,  Benoit Couet ,  Michael L. Evans ,  Paul Albats ,  Bradley A. Roscoe ,  Jacques M. Holenka ,  Keith A. Moriarty ,  William R. Sloan

发明人： William A. Loomis ,  Kenneth E. Stephenson ,  Jerome A. Truax ,  Wolfgang P. Ziegler ,  S. Zema Chowdhuri ,  Benoit Couet ,  Michael L. Evans ,  Paul Albats ,  Bradley A. Roscoe ,  Jacques M. Holenka ,  Keith A. Moriarty ,  William R. Sloan

IPC分类号： G01V5/10

CPC分类号： G01V5/104 ,  G01V5/101 ,  G01V5/107

摘要： Measurement-while-drilling apparatus includes a 14 MeV neutron accelerator, a near-spaced neutron detector which primarily senses source neutrons and whose output is proportional to source strength, one or more intermediately-spaced epithermal neutron detectors eccentered against the drill collar wall and primarily responsive to formation hydrogen concentration, and a third far-spaced radiation detector, either gamma ray or neutron, primarily responsive to formation density. The intermediately-spaced and far-spaced detector outputs, normalized by the near-spaced detector output, are combined to provide measurements of porosity, density and lithology and to detect gas. A thermal neutron detector and/or a gamma ray detector may also be provided at intermediate spacings to provide additional information of interest, such as standoff measurements and spectral analysis of formation composition. Tool outputs are related to the angular or azimuthal orientation of the measurement apparatus in the borehole.

摘要翻译： 测量同时钻探装置包括14MeV中子加速器，近距离中子探测器，其主要感测源中子并且其输出与源强度成比例，一个或多个间隔开的超热中子检测器偏心于钻铤壁，主要 响应于地层氢浓度，以及第三远距离辐射探测器，伽马射线或中子，主要响应地层密度。 通过近距离检测器输出归一化的中间间隔和远距离的检测器输出被组合以提供孔隙度，密度和岩性的测量并检测气体。 还可以以中间间隔提供热中子检测器和/或γ射线检测器以提供感兴趣的附加信息，例如间隔测量和地层组成的光谱分析。 刀具输出与钻孔中测量装置的角度或方位角方向有关。

公开(公告)号：USRE36012E

公开(公告)日：1998-12-29

申请号：US710997

申请日：1996-09-25

申请人： William A. Loomis ,  Kenneth E. Stephenson ,  Jerome A. Truax ,  Wolfgang P. Ziegler ,  S. Zema Chowdhuri ,  Benoit Couet ,  Michael L. Evans ,  Paul Albats ,  Bradley A. Roscoe ,  Jacques M. Holenka ,  Keith A. Moriarty ,  William R. Sloan

发明人： William A. Loomis ,  Kenneth E. Stephenson ,  Jerome A. Truax ,  Wolfgang P. Ziegler ,  S. Zema Chowdhuri ,  Benoit Couet ,  Michael L. Evans ,  Paul Albats ,  Bradley A. Roscoe ,  Jacques M. Holenka ,  Keith A. Moriarty ,  William R. Sloan

IPC分类号： G01V5/10

CPC分类号： G01V5/104 ,  G01V5/101 ,  G01V5/107

摘要： Measurement-while-drilling apparatus includes a 14 MeV neutron accelerator, a near-spaced neutron detector which primarily senses source neutrons and whose output is proportional to source strength, one or more intermediately-spaced epithermal neutron detectors eccentered against the drill collar wall and primarily responsive to formation hydrogen concentration, and a third far-spaced radiation detector, either gamma ray or neutron, primarily responsive to formation density. The intermediately-spaced and far-spaced detector outputs, normalized by the near-spaced detector output, are combined to provide measurements of porosity, density and lithology and to detect gas. A thermal neutron detector and/or a gamma ray detector may also be provided at intermediate spacings to provide additional information of interest, such as standoff measurements and spectral analysis of formation composition. Tool outputs are related to the angular or azimuthal orientation of the measurement apparatus in the borehole.

公开(公告)号：US5513528A

公开(公告)日：1996-05-07

申请号：US407725

申请日：1995-03-20

申请人： Jacques M. Holenka ,  Michael L. Evans ,  Philip L. Kurkoski ,  William R. Sloan ,  David L. Best

发明人： Jacques M. Holenka ,  Michael L. Evans ,  Philip L. Kurkoski ,  William R. Sloan ,  David L. Best

IPC分类号： E21B47/024 ,  E21B47/08 ,  G01V11/00 ,  G01V1/00

CPC分类号： G01V11/00 ,  E21B47/024 ,  E21B47/082 ,  Y10T307/438

摘要： A method and apparatus for measuring formation characteristics as a function of angular distance segments about the borehole is disclosed. The measurement apparatus includes a logging while drilling tool which turns in the borehole while drilling. Such characteristics as bulk density, photoelectric effect (PEF), neutron porosity and ultrasonic standoff are all measured as a function of such angular distance segments where one of such segments is defined to include that portion of a "down" or earth's gravity vector which is in a radial cross sectional plane of the tool. The measurement is accomplished with either a generally cylindrical tool which generally touches a down or bottom portion of the borehole while the tool rotates in an inclined borehole or with a tool centered by stabilizer blades in the borehole.

摘要翻译： 公开了一种用于测量作为围绕钻孔的角距离段的函数的地层特性的方法和装置。 测量装置包括在钻孔时在钻孔中钻孔的测井钻井工具。 这些特征如体密度，光电效应（PEF），中子孔隙率和超声波间隔都是作为这样的角距离段的函数测量的，其中一个这样的段被定义为包括“下”或地球重力向量的那部分 在工具的径向横截面中。 测量使用大致圆柱形的工具来实现，该工具通常在钻孔的下部或底部接触，同时工具在倾斜的钻孔中旋转或者以井眼中的稳定器叶片为中心的工具。

公开(公告)号：US5473158A

公开(公告)日：1995-12-05

申请号：US183089

申请日：1994-01-14

申请人： Jacques M. Holenka ,  Michael L. Evans ,  Philip L. Kurkoski ,  William R. Sloan ,  David L. Best

发明人： Jacques M. Holenka ,  Michael L. Evans ,  Philip L. Kurkoski ,  William R. Sloan ,  David L. Best

IPC分类号： E21B47/024 ,  E21B47/08 ,  G01V11/00 ,  G01V5/10 ,  G01V5/12

CPC分类号： G01V11/00 ,  E21B47/024 ,  E21B47/082 ,  Y10T307/438

摘要： A method and apparatus for measuring formation characteristics as a function of angular distance segments about the borehole is disclosed. The measurement apparatus includes a logging while drilling tool which turns in the borehole while drilling. Such characteristics as bulk density, photoelectric effect (PEF), neutron porosity and ultrasonic standoff are all measured as a function of such angular distance segments where one of such segments is defined to include that portion of a "down" or earth's gravity vector which is in a radial cross sectional plane of the tool. The measurement is accomplished with either a generally cylindrical tool which generally touches a down or bottom portion of the borehole while the tool rotates in an inclined borehole or with a tool centered by stabilizer blades in the borehole.

摘要翻译： 公开了一种用于测量作为围绕钻孔的角距离段的函数的地层特性的方法和装置。 测量装置包括在钻孔时在钻孔中钻孔的测井钻井工具。 这些特征如体密度，光电效应（PEF），中子孔隙率和超声波间隔都是作为这样的角距离段的函数来测量的，其中这些段之一被定义为包括“下”或地球重力向量的那部分 在工具的径向横截面中。 测量使用大致圆柱形的工具来实现，该工具通常在钻孔的下部或底部接触，同时工具在倾斜的钻孔中旋转或者以井眼中的稳定器叶片为中心的工具。

公开(公告)号：US5483061A

公开(公告)日：1996-01-09

申请号：US303109

申请日：1994-09-07

申请人： William R. Sloan

发明人： William R. Sloan

IPC分类号： G01V5/06 ,  G01V5/12

CPC分类号： G01V5/06

摘要： A method and apparatus is disclosed for distinguishing gamma ray induced pulses from shock induced pulses of a scintillation detector used in logging while drilling tools. The method and apparatus identifies detector pulses which occur within a predetermined time interval from a previous pulse as shock induced pulses and identifies pulses that occur after a predetermined time interval from a previous pulse as gamma ray induced pulses.

摘要翻译： 公开了一种用于区分伽马射线诱发脉冲与钻井工具中记录的闪烁检测器的冲击诱发脉冲的方法和装置。 所述方法和装置识别出在距前一脉冲的预定时间间隔内发生的冲击感应脉冲的检测器脉冲，并识别在作为伽马射线感应脉冲从先前脉冲的预定时间间隔之后出现的脉冲。