发明名称 |
Detector pulse forming system for nuclear well logging tools |
摘要 |
For use in a nuclear well logging tool, detector pulse simulator circuits in the preferred and illustrated embodiments are set forth. The simulator circuit is adapted to be placed in a sonde for connection with a well logging tool to provide simulated detector pulses. It is selectively switched on to the output a calibrated pulse sequence function through a number of different levels. It incorporates a circuit means forming pulses limited in amplitude by an envelope yielding pulses of differing amplitude in progression. The circuit is stepped repetitively through its range of operation, for example, from a minimum voltage peak to some specified maximum and then recycles.
|
申请公布号 |
US4543478(A) |
申请公布日期 |
1985.09.24 |
申请号 |
US19820448089 |
申请日期 |
1982.12.09 |
申请人 |
HALLIBURTON COMPANY |
发明人 |
NUNLEY, ALLEN;KAMPFER, JOHN G. |
分类号 |
G01T1/17;G01T1/40;G01V5/04;(IPC1-7):G01V5/04;G01D18/00 |
主分类号 |
G01T1/17 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|