发明名称 |
Method and apparatus for reducing the effective bandwidth of ultrasonic waveform for transmission over a logging cable |
摘要 |
A method and apparatus for increasing the effective bandwidth of an acoustic return resulting from logging operations. The real time acoustic return is stored in memory. A transmitted acoustic return is produced for transmitting over a logging cable by transmitting the acoustic return out of the memory and onto the cable at a rate which is slower than real time.
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申请公布号 |
US4897646(A) |
申请公布日期 |
1990.01.30 |
申请号 |
US19880291525 |
申请日期 |
1988.12.29 |
申请人 |
ATLANTIC RICHFIELD COMPANY |
发明人 |
GOODWILL, WILLIAM P.;KYLE, DONALD G. |
分类号 |
E21B47/12 |
主分类号 |
E21B47/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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