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    • 1. 发明授权
    • Acoustic communication apparatus for use with downhole tools
    • 用于井下工具的声学通讯装置
    • US08416098B2
    • 2013-04-09
    • US12509843
    • 2009-07-27
    • Fernando Garcia-OsunaMiguel Pabon
    • Fernando Garcia-OsunaMiguel Pabon
    • G01V3/00
    • G01V11/002
    • Acoustic communication apparatus for use with downhole tools are described. An example acoustic communication apparatus for use in a wellbore includes a first acoustic transducer to generate first acoustic signals. The first acoustic transducer is mounted in an interior of a first drill collar to transmit the first acoustic signals via at least a portion of a body of a drillstring or a mud channel within the drillstring to a second drill collar. Additionally, the example acoustic communication apparatus includes a first receiver mounted to the first drill collar to receive second acoustic signals transmitted from the second drill collar.
    • 描述了与井下工具一起使用的声学通信装置。 用于井眼的示例性声学通信装置包括产生第一声学信号的第一声学换能器。 第一声​​学换能器安装在第一钻铤的内部,以将钻铤内的钻柱或泥浆通道的主体的至少一部分的至少一部分传送到第二钻铤。 此外,示例性声学通信装置包括安装到第一钻铤以接收从第二钻铤传送的第二声信号的第一接收器。
    • 5. 发明授权
    • Method and apparatus for ultrasound velocity measurements in drilling fluids
    • 钻井液超声速度测量的方法和装置
    • US07418865B2
    • 2008-09-02
    • US10540403
    • 2003-11-21
    • Roger GriffithsMiguel Pabon
    • Roger GriffithsMiguel Pabon
    • G01N29/024G01V1/40G01V1/00
    • E21B47/082
    • The disclosure relates to methods and apparatus for determining the velocity of an ultrasound pulse in drilling fluids in downhole environments. A method for determining a velocity of ultrasound propagation in a drilling fluid in a downhole environment includes emitting an ultrasound pulse into the drilling fluid in a borehole using a first ultrasound transducer (37); detecting the ultrasound pulse after the ultrasound pulse has traveled a distance (d); determining a travel time (t) required for the ultrasound pulse to travel the distance (d); and determining the velocity of ultrasound propagation from the known distance (d) and the travel time (t). An apparatus for determining a velocity of ultrasound propagation in a drilling fluid in a downhole environment includes a first ultrasound transducer (37) disposed on a tool; and a circuitry (82) for controlling a timing of an ultrasound pulse transmitted by the first ultrasound transducer (37) and for measuring a time lapse between ultrasound transmission and detection after the ultrasound pulse has traveled a distance (d).
    • 本公开涉及用于确定井下环境中的钻井液中的超声脉冲的速度的方法和装置。 一种用于确定井下环境中的钻井液中的超声波传播速度的方法包括使用第一超声换能器(37)将钻井液中的超声脉冲发射到钻孔中。 在超声脉冲行进距离(d)之后检测超声脉冲; 确定超声波脉冲行进距离(d)所需的行进时间(t); 以及从已知距离(d)和行进时间(t)确定超声波传播的速度。 一种用于确定井下环境中钻井液中的超声波传播速度的装置,包括设置在工具上的第一超声换能器(37) 以及电路(82),用于控制由所述第一超声波换能器(37)发射的超声脉冲的定时,并且用于测量所述超声波脉冲行进了距离(d)之后的超声波发射和检测之间的时间间隔。