公开(公告)号：US3982606A

公开(公告)日：1976-09-28

申请号：US543000

申请日：1975-01-22

申请人： James E. Berry ,  Andrew J. D. Straus

发明人： James E. Berry ,  Andrew J. D. Straus

IPC分类号： G01V1/52 ,  G01V1/40

CPC分类号： G01V1/523

摘要： An acoustical logging apparatus which has a means for interfering with those unwanted signals which inherently travel in the mud between the transmitter and the closest receiver of said apparatus during a logging operation. The signal interference means comprises a rotating sleeve having signal attenuation elements mounted thereon which are adapted to extend to the wall of the borehole to act as a centralizer when the apparatus is in the borehole. These elements are vertically stacked in an overlapped relationship so as to present an obstructed path through the mud for said signals but so as to offer only nominal resistance to displacement of mud as the apparatus is moved therethrough.

摘要翻译： 一种声学测井装置，其具有用于在测井操作期间干扰固有地在发射器和所述装置的最接近的接收器之间的泥浆中传播的那些不需要的信号的装置。 信号干扰装置包括具有安装在其上的信号衰减元件的旋转套筒，其适于延伸到钻孔的壁以在装置处于钻孔中时用作扶正器。 这些元件以重叠的关系垂直堆叠，以便为所述信号提供通过泥浆的阻碍路径，但是当设备移动通过其时，仅提供对泥浆的位移的标称阻力。