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    • 4. 发明授权
    • Method for simulating crosswell seismic data
    • 模拟井间地震数据的方法
    • US5481501A
    • 1996-01-02
    • US19501
    • 1993-02-19
    • Samuel N. BlakesleeSen-Tsuen Chen
    • Samuel N. BlakesleeSen-Tsuen Chen
    • G01V1/42G01V1/28G01V1/36
    • G01V1/42
    • A method for simulating crosswell seismic data between first and second spaced apart wells is disclosed. According to the invention, a surface seismic source is used to generate a seismic signal at a location on the surface of the earth substantially in line with, but not between, the wells and closer to the first well than to the second well. A plurality of downhole seismic receivers are located in the first well and at least one downhole seismic receiver is located in the second well. The actual arrival time of the seismic signal at each of the first well and second well seismic receivers is recorded. For each second well seismic receiver, the actual arrival time is then compared to an estimate of the seismic signal travel time calculated on the basis of an assumed interwell seismic velocity field. If the estimate of the seismic signal travel time is not equal to the actual arrival time for each second well seismic receiver, the assumed interwell seismic velocity field is modified and the calculation is repeated. In this manner, the actual interwell seismic velocity field can be determined.
    • 公开了一种在第一和第二间隔开的井之间模拟井下地震数据的方法。 根据本发明,表面地震源用于在地球表面上的一个位置上产生地震信号,其基本上与井之间但不在井之间并且靠近第一井而不是第二井。 多个井下地震接收器位于第一井中,并且至少一个井下地震接收器位于第二井中。 记录地震信号在第一井和第二井地震接收机中的每一个的实际到达时间。 对于每个第二井地震接收机,然后将实际到达时间与基于假定的井间地震速度场计算的地震信号行进时间的估计进行比较。 如果地震信号行进时间的估计不等于每个第二井地震接收机的实际到达时间,则假定的井间地震速度场被修改,并重复计算。 以这种方式,可以确定实际的井间地震速度场。
    • 6. 发明授权
    • Acoustic quadrupole shear wave logging device
    • 声四极杆剪切波测井装置
    • US5027331A
    • 1991-06-25
    • US496400
    • 1990-03-20
    • Graham A. WinbowSen-Tsuen ChenJames A. Rice
    • Graham A. WinbowSen-Tsuen ChenJames A. Rice
    • G01H1/04G01V1/46
    • G01V1/46G01H1/04
    • The quadrupole shear wave logging device of this invention includes a logging sonde, means for generating a quadrupole shear wave in the earth formation surrounding a borehole containing fluid, and means for detecting in the fluid the refraction of the quadrupole shear wave. In the preferred embodiment, the generating means comprises four similar sectors of a hollow piezoelectric cylinder. The four cylinders are polarized radially. The four sectors are so connected to the sonde that they are in the form of a split cylinder coaxial with the sonde axis. Electrical pulses of similar waveforms are applied across the inner and outer cylindrical surfaces of each sector to vibrate the four sectors. The electrical pulses are of such polarities that, during their initial motions of vibration, two oppositely situated sectors are caused to move outward and the remaining two oppositely situated sectors to move inward substantially simultaneously. Thus, the oppositely situated sectors will vibrate in phase whereas adjacent sectors will vibrate substantially opposite in phase. The vibrations of the four sectors generate four pressure waves: two positive pressure aves and two negative pressure waves. The four pressure waves generatred will interfere and produce a quadrupole shear wave in the formation. The pressure wave in the fluid caused by refraction of such quadrupole shear wave is detected by the detecting means comprising two detectors in the fluid spaced apart longitudinally from each other and from the generating means. Shear wave velocity of the formation may be determined from the time interval between the detections of the refraction of the quadrupole shear wave by the two detectors.
    • 本发明的四极剪切波测井装置包括测井探测器,用于在围绕包含流体的钻孔的地层中产生四极剪切波的装置,以及用于在流体中检测四极剪切波的折射的装置。 在优选实施例中,发电装置包括中空压电圆筒的四个相似的扇形。 四个圆柱体径向极化。 四个扇区与探头连接,它们是与探头轴线同轴的分裂圆柱体的形式。 类似波形的电脉冲跨越每个扇区的内圆柱面和外圆柱面施加,以振动四个扇区。 电脉冲具有这样的极性,即在振动的初始运动期间,使两个相对定位的扇区向外移动,并且剩余的两个相对定位的扇区基本上同时向内移动。 因此,相对位置的扇区将同相振动,而相邻的扇区将基本上相位振动。 四个扇区的振动产生四个压力波:两个正压力和两个负压波。 发生的四个压力波将在地层中干扰并产生四极剪切波。 由这种四极剪切波的折射引起的流体中的压力波由检测装置检测,该检测装置包括在彼此纵向彼此间隔开的并且与发生装置间隔开的流体中的两个检测器。 地层的剪切波速度可以由两个检测器对四极剪切波的折射检测之间的时间间隔确定。
    • 8. 发明授权
    • Shear wave logging using acoustic multipole devices
    • 使用声学多极装置进行剪切波测井
    • US4855963A
    • 1989-08-08
    • US140871
    • 1988-01-06
    • Graham A. WinbowSen-Tsuen ChenJames A. Rice
    • Graham A. WinbowSen-Tsuen ChenJames A. Rice
    • G01V1/46
    • G01V1/46Y10S367/912
    • The multipole shear wave logging device of this invention includes a logging sonde, means for generating a 2.sup.n -pole shear wave in an earth formation surrounding a borehole containing liquid where n is an integer greater than 2, and means for detecting in the liquid the refraction of the 2.sup.n -pole shear wave. In the preferred embodiment the generating means comprises six similar sectors of a hollow piezoelectric cylinder. The six sectors are polarized radially and are so connected to the sonde that they are in the form of a split cylinder coaxial with the sonde axis. Electrical pulses of similar wave forms are applied across the inner and outer cylindrical surfaces of each sector. The electrical pulses are of such polarities that adjacent sectors vibrate radially in substantially opposite phase. Circumferentially polarized sectors may also be used in the place of radially polarized sectors. The vibrations of the six sectors will generate compressional waves in the liquid which will interfere to produce an octopole shear wave in the formation. The compressional wave in the liquid caused by refraction of such octopole shear wave is detected by detecting means. The detecting means comprises two detectors in the liquid spaced apart longitudinally from each other and from the generating means. The shear wave velocity of the formation is determined from the time interval between detections of the refraction of the octopole shear wave by the two detectors.
    • 本发明的多极剪切波测井装置包括测井探测器,用于在围绕包含液体的井眼的地层中产生2n极剪切波的装置,其中n是大于2的整数,以及用于在液体中检测折射的装置 的2n极剪切波。 在优选实施例中,发电装置包括六个类似的中空压电圆筒的扇形。 六个扇区是径向极化的,并且与探头连接,它们是与探头轴线同轴的分裂圆柱体的形式。 类似波形的电脉冲跨越每个扇区的内圆柱面和外圆柱面施加。 电脉冲具有这样的极性,使得相邻扇区以基本上相反的相位径向地振动。 圆周极化扇区也可以用于放射偏振扇区的位置。 六个扇区的振动将在液体中产生压缩波,这将在地层中产生一个八极剪切波。 通过检测手段检测由这种八极剪切波的折射引起的液体中的压缩波。 检测装置包括液体彼此纵向间隔开并且与发生装置间隔开的两个检测器。 地层的剪切波速度由两个检测器对八极剪切波的折射检测之间的时间间隔确定。
    • 9. 发明授权
    • Method and apparatus for acoustic well logging
    • 声学测井的方法和装置
    • US4685091A
    • 1987-08-04
    • US609066
    • 1984-05-10
    • Jing-Yau ChungSen-Tsuen ChenJames C. WainerdiMark A. Miller
    • Jing-Yau ChungSen-Tsuen ChenJames C. WainerdiMark A. Miller
    • B06B1/08G01V1/145G01V1/44G01V1/00H04R17/00
    • G01V1/44B06B1/085G01V1/145Y10S367/912
    • Method and apparatus for acoustic wave generation and transmission into a subsurface earth formation. A logging sonde adapted to be suspended in a borehole within the formation houses a generator means for simultaneously generating a plurality of acoustic waves traveling in the direction of and spaced substantially evenly about the logitudinal axis of the sonde. An acoustic energy reflector means within the housing reflects the waves radially outwards of the axis and into the formation at angles generally perpendicular to the axis. Detectors within the housing spaced longitudinally from the generator and reflector detect acoustic energy in the formation resulting from the reflected waves. In a preferred embodiment, the generator means comprises four cylindrical magnetostrictively energized elements disposed about the central axis of the sonde, each having an axis parallel to the central axis, so that the four axes of the elements, when viewed in the direction of the central axis, define four corners of a square. The elements are designed so that upon energization, a given element vibrates longitudinally out of phase relative to the two elements adjacent thereto, vibration of the four elements in concert generating two positive and two negative waves which, when reflected into the formation, interfere to produce a quadrupole shear wave.
    • 声波产生和传播到地下地层的方法和装置。 适于悬挂在地层内的钻孔中的记录探测器容纳一个发生器装置,用于同时产生多个声波,该多个声波沿着探头的纵向轴线的方向和基本均匀地间隔开。 壳体内的声能反射器装置以大致垂直于轴线的角度径向向外反射波浪并进入地层。 壳体内与发生器和反射器纵向隔开的探测器检测由反射波产生的地层中的声能。 在优选实施例中,发电机装置包括围绕发射器的中心轴设置的四个圆柱形磁致伸缩激励元件,每个具有平行于中心轴线的轴线,从而当从中心轴线方向看时,元件的四个轴线 轴,定义一个正方形的四个角。 元件被设计成使得在通电时,给定元件相对于与其相邻的两个元件纵向异相振动,四个元件的振动一起产生两个正和负的负波,当反射到地层中时,它们会干扰产生 四极剪切波。