Combination well logging device
    2.
    发明授权
    Combination well logging device 失效
    组合测井装置

    公开(公告)号:US5528556A

    公开(公告)日:1996-06-18

    申请号:US316005

    申请日:1994-09-30

    CPC分类号: G01V11/00 Y10S367/911

    摘要: The invention concern a combination well logging device adapted to be moved inside a borehole to measure the properties of geological formations through which the borehole passes.The device according to the invention comprises a series of elongate logging sections mounted end to end, including a first section adapted to be maintained with a generatrix applied against the wall of the borehole, a second section comprising a body and a measurement pad adapted to be spaced radially from the body for application against said wall, a third section adapted to be kept space from said wall, and first and second hinges connecting the second section to the first and third sections respectively in order to allow respective angles of inclination between the second section and the first and third sections.

    摘要翻译: 本发明涉及一种组合测井装置,其适于在井眼内移动以测量钻孔经过的地质构造的性质。 根据本发明的装置包括一系列沿着端部安装的细长测井部分,包括适于保持有母线施加在钻孔壁上的第一部分,第二部分包括主体和测量垫, 与主体径向间隔开以抵靠所述壁,适于与所述壁保持空间的第三部分,以及分别将第二部分连接到第一和第三部分的第一和第二铰链,以便允许第二部分 部分和第一部分和第三部分。

    Method and apparatus for deactivating a partially flooded perforating
gun assembly
    3.
    发明授权
    Method and apparatus for deactivating a partially flooded perforating gun assembly 失效
    用于去激活部分淹没的射孔枪组件的方法和装置

    公开(公告)号:US4649822A

    公开(公告)日:1987-03-17

    申请号:US728056

    申请日:1985-04-29

    申请人: Bronislaw Seeman

    发明人: Bronislaw Seeman

    摘要: A method and apparatus for deactivating a partially flooded perforating gun assembly utilizes a fuse which extends downwardly to the lower end of a perforating gun section and is then associated with an explosive coupler having a means for interrupting the transmission of an explosive force upon the presence of undesired fluid in the lower end of the gun section.

    摘要翻译: 用于去激活部分淹没的射孔枪组件的方法和装置利用一个保险丝,该保险丝向下延伸到射孔枪部分的下端,然后与具有中断爆炸力传递装置的爆炸联动器相关联, 枪部分下端的不需要的液体。

    Method and apparatus for obtaining a display of a characteristic of the
periphery of a well
    4.
    发明授权
    Method and apparatus for obtaining a display of a characteristic of the periphery of a well 失效
    用于获得井的周边特征的显示的方法和装置

    公开(公告)号:US4607352A

    公开(公告)日:1986-08-19

    申请号:US523821

    申请日:1983-08-15

    CPC分类号: G01D9/02 G01V1/24 G01V11/002

    摘要: The apparatus and method of the present invention pertain to visual presentation systems employing scan lines, wherein each scan line is divisible into sets of points respectively corresponding to locations at which well measurements are made. The resulting sets are shaded in accordance with the value of the respective measurements. Harsh transitions between adjacent sets are removed by having a parameter evaluated for each point of the scan line in accordance with (a) the spatial relationship of a subset of points which includes the point to adjacent sets of points; and (b) the well measurement made at the location to which the point corresponds. The parameter value is compared with a randomly or pseudo-randomly generated number, and the point is marked if the result of the comparison satisfies a preselected relationship. The parameter is evaluated and the comparison is made for all other points in the scan line.

    摘要翻译: 本发明的装置和方法涉及使用扫描线的视觉呈现系统,其中每个扫描线可分为对应于进行井测量的位置的点集合。 所得到的集合根据各个测量值的值进行着色。 根据(a)包括点到相邻点的点的子集的空间关系,通过对扫描线的每个点评估参数来去除相邻集之间的苛刻过渡; 和(b)在点对应的位置进行的井测量。 将参数值与随机或伪随机生成的数字进行比较,如果比较结果满足预选关系,则标记该点。 评估参数,并对扫描线中的所有其他点进行比较。

    Apparatus and method for determining velocity of acoustic waves in earth
formations

    公开(公告)号:US4367541A

    公开(公告)日:1983-01-04

    申请号:US100767

    申请日:1979-12-06

    申请人: Bronislaw Seeman

    发明人: Bronislaw Seeman

    IPC分类号: G01V1/50 G01V1/40 G01V1/28

    CPC分类号: G01V1/50

    摘要: The disclosure is directed to an apparatus and method for determining the velocity of acoustic wave energy propagating information surrounding a borehole. In accordance with one form of the apparatus, a transmitter is positioned in the borehole and periodically establishes acoustic wave energy in the surrounding formations. The acoustic wave energy is received at a plurality of spaced locations in the borehole and a plurality of signals are derived which are respectively representative of the wave energy received at the plurality of spaced locations in the borehole. Means are provided, for correcting a first portion of the signal from one of the receiver locations with first portions of signals from the other receiver locations. The time references of the first portion of the signals from the other locations are determined from an assumed velocity in conjunction with the time reference of the first portion of the signal from the one receiver location and the distance to each of the other receivers. The correlating is performed for a number of different assumed velocities to obtain a resultant first provisional velocity. In particular, the assumed velocity which yields substantially the maximum or best correlation is selected as the first provisional velocity. Means are also provided for correlating a second portion of the signal from said one of the receiver locations with second portions of the signals from the other receiver locations. Again, the second portions of the signals from the other receiver locations are determined using an assumed velocity, and the correlating of second portions is performed for a number of different assumed velocities to obtain a resultant second provisional velocity. An output velocity is then generated as a function of the first, second, and other similarly generated velocities. An output velocity for the compressional component of the acoustic wave energy and/or an output velocity for the shear component of the acoustic wave energy can be obtained using the disclosed technique.

    Method and apparatus for evaluating formation resistivity using focused
annular and azimuthal electrodes
    6.
    发明授权
    Method and apparatus for evaluating formation resistivity using focused annular and azimuthal electrodes 失效
    使用聚焦的环形和方位电极评估地层电阻率的方法和装置

    公开(公告)号:US5399971A

    公开(公告)日:1995-03-21

    申请号:US974029

    申请日:1992-11-10

    IPC分类号: G01V3/24 G01V3/20

    CPC分类号: G01V3/24

    摘要: The apparatus includes an array of azimuthal current electrodes (Aaz.sub.i) that are circumferentially spaced apart from one another on a body together with two annular guard electrodes (A2) disposed on opposite sides of the array of azimuthal current electrodes (Aaz.sub.i). Measurement currents (Iaz.sub.i) are emitted by the current electrodes (Aaz.sub.i) and focusing currents are emitted by the guard electrodes (A2). Azimuthal monitor electrodes (Maz.sub.i) are associated with respective ones of the azimuthal current electrodes (Aaz.sub.i). Two annular monitor electrodes (M3, M4) are disposed on opposite sides of the array of azimuthal current electrodes (Aaz.sub.i). For focusing purposes, a servo-control system controls the emission of the currents so as to substantially cancel the potential difference detected between the short circuited monitor electrodes (M3, M4) and each of the azimuthal monitor electrodes (Maz.sub.i). In response to the measurement currents (Iaz.sub.i), output signals (Raz.sub.i) are generated representative of the resistivity of the formations in a plurality of directions around the axis of the borehole. A high resolution output signal (Rhr) is also generated as a function of the sum of the measurement currents (Iaz.sub.i).

    摘要翻译: 该装置包括一个阵列的方位电流电极(Aazi),它们与设置在方位电流电极(Aazi)阵列的相对侧上的两个环形保护电极(A2)一起在主体上彼此周向间隔开。 测量电流(Iazi)由电流电极(Aazi)发射,聚焦电流由保护电极(A2)发射。 方位监视电极(Mazi)与各方位电流电极(Aazi)相关联。 两个环形监视电极(M3,M4)设置在方位电流电极阵列(Aazi)的相对两侧。 为了聚焦目的,伺服控制系统控制电流的发射,以便基本上消除在短路监视电极(M3,M4)和每个方位监视电极(Mazi)之间检测到的电位差。 响应于测量电流(Iazi),产生输出信号(Razi),其代表围绕钻孔的轴线的多个方向上的地层的电阻率。 作为测量电流(Iazi)之和的函数也产生高分辨率输出信号(Rhr)。

    Method and apparatus for measuring gamma rays in a borehole
    7.
    发明授权
    Method and apparatus for measuring gamma rays in a borehole 失效
    用于测量井眼中的伽马射线的方法和装置

    公开(公告)号:US4433240A

    公开(公告)日:1984-02-21

    申请号:US270670

    申请日:1981-06-04

    申请人: Bronislaw Seeman

    发明人: Bronislaw Seeman

    CPC分类号: G01T1/40 G01V5/06

    摘要: A gain stabilization loop for a gamma ray spectroscopy technique uses count rates from a pair of contiguous windows positioned on either side of at least one or more peaks of the detected spectrum. These count rates are combined to generate an error signal which minimizes the statistical errors. The stabilization loop modifies the response of the measurement apparatus so as to cancel the error signal.

    摘要翻译: 用于伽马射线光谱技术的增益稳定环路使用位于检测到的光谱的至少一个或多个峰值的任一侧上的一对连续窗口的计数率。 这些计数速率被组合以产生使统计误差最小化的误差信号。 稳定环路修改测量装置的响应,以消除误差信号。

    Nuclear spectroscopy method and apparatus for digital pulse height
analysis
    8.
    发明授权
    Nuclear spectroscopy method and apparatus for digital pulse height analysis 失效
    用于数字脉冲高度分析的核心光谱法和装置

    公开(公告)号:US5067090A

    公开(公告)日:1991-11-19

    申请号:US344729

    申请日:1989-05-01

    申请人: Bronislaw Seeman

    发明人: Bronislaw Seeman

    IPC分类号: G01T1/17 G01V5/10

    CPC分类号: G01T1/17 G01V5/101

    摘要: A nuclear spectroscopy method for pulse height analysis of an electrical signal emitted by a radiation detector and including nuclear events, such as pulses, whose amplitude is a measure of the energy of the gamma rays collected by said radiation detector, wherein (1) said signal is continuously converted to digital samples, at a given rate, and (2) each of the digital samples is processed so as to form a digital image of each detected pulse. The energy of each pulse is calculated by summing all sample values representative of this pulse and the sample just preceding the first sample representative of a pulse, as well as the sample just following the last sample representative of the same pulse.

    Logging apparatus and method for determining concentrations of
subsurface formation elements
    9.
    发明授权
    Logging apparatus and method for determining concentrations of subsurface formation elements 失效
    用于确定地下构造元素浓度的测井装置和方法

    公开(公告)号:US5053620A

    公开(公告)日:1991-10-01

    申请号:US450355

    申请日:1989-12-13

    IPC分类号: G01V5/06 G01V5/10

    CPC分类号: G01V5/101 G01V5/06

    摘要: Method and apparatus for identifying and determining the concentrations of subsurface formation elements next to a borehole, by detecting and counting the gamma rays resulting from the activation of Al atoms by neutrons emitted by a high energy source. The total count rates from Al are corrected for Si interference by (1) calculating the ratio of the count rates of gamma rays from Si activation to the count rates of the gamma rays resulting from the inelastic collisions of neutrons with Si atoms, thus providing a reference ratio independent of environmental parameters; (2) detecting and counting the gamma rays resulting from the Si inelastic collisions; (3) determining from the count rates of silicon inelastic gamma rays and from said ratio, the count rates of Si activation gamma rays; and (4) subtracting, from the total count rates of activation gamma rays, the count rates of Si activation gamma rays.The method comprises also detecting and counting the gamma rays resulting from the capture of said neutrons by atoms of a plurality of elements.

    摘要翻译: 通过检测和计数由高能源发射的中子激活Al原子而产生的伽马射线,来识别和确定钻孔旁边的地下构造元素的浓度的方法和装置。 通过(1)计算从Si激活的γ射线的计数率与由Si原子的中子的非弹性碰撞产生的伽马射线的计数率的比率来校正来自Al的总计数率,由此提供 参考比独立于环境参数; (2)检测并计数由Si非弹性碰撞产生的伽马射线; (3)从硅非弹性γ射线的计数率和所述比例确定Si激活γ射线的计数率; 和(4)从激活γ射线的总计数率中减去Si激活γ射线的计数率。 该方法还包括检测和计数由多个元素的原子捕获所述中子产生的伽马射线。

    Acoustic apparatus and method for detecting borehole wall
discontinuities such as vertical fractures
    10.
    发明授权
    Acoustic apparatus and method for detecting borehole wall discontinuities such as vertical fractures 失效
    用于检测井壁不连续性(如垂直裂缝)的声学仪器和方法

    公开(公告)号:US4885723A

    公开(公告)日:1989-12-05

    申请号:US332120

    申请日:1981-12-18

    IPC分类号: G01V1/46

    CPC分类号: G01V1/46 Y10S367/911

    摘要: Apparatus and methods are described for detecting fractures in a wall of a borehole penetrating an earth formation. An acoustic transducer produces pulses of acoustic energy at beam forming frequencies with the direction of the beam being so oriented as to preferentially excite transverse waves in the wall of the borehole. Discontinuities such as fractures cause a reflection of the transverse waves and these in turn are detected so that a positive identification of fractures is obtained. Fractures having various inclination angles are detected by employing apparatus and methods for scanning the acoustic beam while maintaining its orientation which preferentially enhances transverse waves. In this manner the transverse waves may be directed perpendicular to the fractures to enhance detectable reflections. A transducer employing an array of individually excitable acoustic elements is described with associated controls.

    摘要翻译: 描述了用于检测穿透地层的钻孔壁中的裂缝的装置和方法。 声学换能器以波束形成频率产生声能脉冲,其中波束的方向被定向成优先激发钻孔壁中的横波。 诸如断裂的不连续性导致横波的反射,并且这些反过来被检测,使得获得了断裂的肯定识别。 通过采用用于扫描声束的装置和方法来检测具有各种倾斜角的断裂,同时保持其取向优先增强横波。 以这种方式,横波可以垂直于裂缝定向以增强可检测的反射。 使用相关联的控制来描述采用单独可激发声学元件的阵列的换能器。