公开(公告)号：US20120326723A1

公开(公告)日：2012-12-27

申请号：US13523867

申请日：2012-06-14

申请人： Richard Bloemenkamp ,  Emmanuel Legendre ,  Alain Dumont

发明人： Richard Bloemenkamp ,  Emmanuel Legendre ,  Alain Dumont

IPC分类号： G01V3/20

CPC分类号： G01V3/24

摘要： An apparatus for making a resistivity measurement of an underground formation surrounding a borehole is provided. The apparatus includes a conductive tool body, at least one current injector electrode positioned between the tool body and a wall of the bore hole, at least one current return electrode positioned between the tool body and the wall of the bore hole, an electrical measurement device configured to monitor a voltage or a current signal indicative of an impedance imbalance, a regulator connected to the electrical measurement device, whereby the regulator is configured to receive the voltage or the current signal indicative of the impedance imbalance and is configured to generate an adjustment signal based on the voltage or the current signal indicative of the impedance imbalance.

摘要翻译： 提供了一种用于对围绕钻孔的地下地层进行电阻率测量的装置。 该装置包括导电工具主体，至少一个电流注入器电极，位于工具主体和钻孔的壁之间，至少一个电流返回电极，位于工具主体和钻孔的壁之间;电测量装置 被配置为监视指示阻抗不平衡的电压或电流信号，连接到所述电测量装置的调节器，由此所述调节器被配置为接收指示所述阻抗不平衡的电压或电流信号，并且被配置为产生调整信号 基于表示阻抗不平衡的电压或电流信号。

公开(公告)号：US20120218862A1

公开(公告)日：2012-08-30

申请号：US13499909

申请日：2010-10-26

申请人： Hiroshi Nakajima ,  Toshihiro Kinoshita ,  Hiroshi Hori ,  Alain Dumont ,  Hiroshi Nomura

发明人： Hiroshi Nakajima ,  Toshihiro Kinoshita ,  Hiroshi Hori ,  Alain Dumont ,  Hiroshi Nomura

IPC分类号： G01V1/44

CPC分类号： G01V1/44

摘要： Apparatus for acoustic measurement in a downhole environment to enable high quality measurements to be obtained in difficult logging conditions are disclosed. An example apparatus includes a downhole tool having a body with a plurality of transmitters located on the body. A receiver is located on the body a distance from the transmitters and an attenuator section is integrally formed on the body between at least one transmitter and the receiver.

摘要翻译： 公开了一种用于在井下环境中进行声学测量以在难以测井条件下获得高质量测量的装置。 示例性装置包括井下工具，其具有主体，其具有位于主体上的多个发射器。 接收器位于与发射器一定距离的身体上，并且衰减器部分在至少一个发射器和接收器之间的主体上整体形成。

公开(公告)号：US08225868B2

公开(公告)日：2012-07-24

申请号：US12333284

申请日：2008-12-11

申请人： Jan Stefan Morley ,  Alain Dumont

发明人： Jan Stefan Morley ,  Alain Dumont

IPC分类号： E21B47/01

CPC分类号： E21B17/1078 ,  E21B47/01 ,  Y10T29/49826

摘要： An interchangeable sleeve for a downhole tool includes a substantially cylindrical body configured to circumferentially engage the downhole tool, a blade extending radially from the body, and a transducer disposed within the blade. A drilling assembly includes a drill collar, an interchangeable blade configured to couple to the drill collar, and a transducer disposed within the blade. A size of the blade and a size of the transducer are selected based on a diameter of a borehole in which the downhole tool is to be used. A method of manufacturing an interchangeable sleeve for a downhole tool includes forming a blade on a body of the sleeve such that the blade extends radially from the body, disposing a transducer within the blade, and configuring the sleeve to circumferentially engage the downhole tool.

摘要翻译： 用于井下工具的可互换套管包括构造成周向接合井下工具的基本上圆柱形的主体，从主体径向延伸的叶片和设置在叶片内的换能器。 钻井组件包括钻铤，被配置为联接到钻铤的可互换刀片和设置在刀片内的换能器。 基于要使用井下工具的钻孔的直径来选择叶片的尺寸和换能器的尺寸。 制造用于井下工具的可互换套筒的方法包括在套筒的主体上形成刀片，使得刀片从主体径向延伸，在叶片内设置换能器，并且构造套筒以周向地接合井下工具。

公开(公告)号：US20100177594A1

公开(公告)日：2010-07-15

申请号：US12352848

申请日：2009-01-13

申请人： Sandip Bose ,  Alain Dumont ,  Henri Pierre Valero

发明人： Sandip Bose ,  Alain Dumont ,  Henri Pierre Valero

IPC分类号： G01V1/28

CPC分类号： G01V1/48

摘要： Methods and related systems are described for modified semblance criterions based on the approach of thresholding the signal energy. A first criterion is derived by posing the problem as that of detecting a signal with energy (or amplitude) greater than the specified threshold and deriving the generalized likelihood ratio test statistic. A second criterion is derived using the same method by posing the problem as that of rejecting any signal with energy (or amplitude) below a specified threshold and detecting it if its energy is above another threshold greater than or equal to the first. These appropriately modify the original semblance criterion which is shown to be equivalent to the GLRT test statistic in the absence of any threshold on the signal amplitude. In addition simpler modifications are also described. Tests on synthetic data illustrate the effectiveness of all these modifications which perform comparably well at suppressing unwanted arrivals while accurately processing the desired signals.

摘要翻译： 基于阈值信号能量的方法描述了修改的相似标准的方法和相关系统。 通过将问题作为检测具有大于指定阈值的能量（或幅度）的信号的问题得出第一标准，并导出广义似然比检验统计量。 通过将问题作为拒绝具有低于指定阈值的能量（或振幅）的任何信号的问题，通过使用相同的方法导出第二准则，并且如果其能量高于大于或等于第一阈值的阈值，则检测它。 这些适当地修改了在信号幅度没有任何阈值的情况下显示为等同于GLRT检验统计量的原始相似标准。 另外还描述了更简单的修改。 对合成数据的测试说明了所有这些修改的有效性，其在精确地处理期望的信号的同时抑制不期望的到达情况下相当好地执行。

公开(公告)号：US5345179A

公开(公告)日：1994-09-06

申请号：US848621

申请日：1992-03-09

申请人： Tarek M. Habashy ,  M. Reza Taherian ,  Alain Dumont ,  Jeffrey A. Beren

发明人： Tarek M. Habashy ,  M. Reza Taherian ,  Alain Dumont ,  Jeffrey A. Beren

IPC分类号： G01V3/30

CPC分类号： G01V3/30

摘要： A form of the disclosure is directed to determining properties of formations surrounding an earth borehole having a standoff layer. A method is disclosed for determining the conductivity and permittivity of the standoff layer and the conductivity and permittivity of the formations adjacent the standoff layer. A further form of the disclosure is directed to an electromagnetic logging apparatus having transmitting and receiving antennas in RTTR, RRTTRR or TTRRTT arrangements.

摘要翻译： 本公开的一种形式涉及确定具有隔离层的地球钻孔周围的地层的性质。 公开了一种用于确定隔离层的导电性和介电常数以及邻近隔离层的地层的导电率和介电常数的方法。 本公开的另一形式涉及具有RTTR，RRTTRR或TTRRTT布置的发射和接收天线的电磁测井装置。

公开(公告)号：US5198770A

公开(公告)日：1993-03-30

申请号：US793742

申请日：1991-11-18

申请人： Jean-Luc Decorps ,  Alain Dumont ,  Alan Sallwasser

发明人： Jean-Luc Decorps ,  Alain Dumont ,  Alan Sallwasser

IPC分类号： G01V11/00

CPC分类号： G01V11/002

摘要： The apparatus includes a pad (20) pressed against the wall of a borehole (12), the pad comprising a plurality of detecting devices (42, 43, 44, 45) disposed in alignment along the longitudinal direction of the borehole. Each detecting device includes a housing (112, 113) having complementary ends fitted with electrical connectors. The end of one housing (112) is extended by first skirts (117, 118) suitable for interfitting between second skirts (121) of the complementary end of the housing (113) of an adjacent detecting device. An annular element (111) and screws (120, 122) fixed to complementary ends together thus constituting a rigid pad (20) which can be disassembled.

公开(公告)号：US4786095A

公开(公告)日：1988-11-22

申请号：US159596

申请日：1988-01-25

申请人： Alain Dumont

发明人： Alain Dumont

IPC分类号： A01B1/06 ,  A01B1/20 ,  A01B1/22 ,  B25F1/02

CPC分类号： A01B1/227 ,  A01B1/06 ,  A01B1/20

摘要： Each gardening tool proper (1) has a hollow mounting end-piece (3) provided on its free edge with a hook-shaped or channel-shaped member (4a,4b) whose opening is directed towards the working end of the tool. A handle (2) of either wood or plastic has a diameter at the lower end thereof which permits engagement with slight friction within the end-piece (3). A tool-retaining device stationarily fixed near the lower end of the handle has a resilient loop (11) which is intended to be engaged within the hook-shaped or channel-shaped member (4a,4a) of the end-piece. After engagement, the loop can be stretched or slackened (by means 5and 7 to 10) in order to permit either rigid interassembly or subsequent separation of tool proper and handle.

摘要翻译： PCT No.PCT / FR87 / 00186 Sec。 371日期：1988年1月25日 102（e）日期1988年1月25日PCT提交1987年5月27日PCT Pub。 公开号WO87 / 07111 日期为1987年12月3日。每个园艺工具本身（1）都有一个中空的安装端件（3），其自由边缘上设有一个钩形或槽形构件（4a，4b），其开口朝向 工具的工作结束。 木材或塑料的手柄（2）在其下端具有直径，其允许与端部件（3）内的轻微摩擦接合。 在手柄的下端附近固定固定的工具保持装置具有弹性环（11），该弹性环将被接合在端件的钩形或槽形构件（4a，4a）内。 在接合之后，可以将环路拉伸或松弛（通过5和7至10），以便允许刚性组装或随后分离工具本身和手柄。