发明名称 |
A MEASUREMENT-WHILE-DRILLING ACOUSTIC SYSTEM EMPLOYING MULTIPLE, SEGMENTED TRANSMITTERS AND RECEIVERS |
摘要 |
This invention is directed toward apparatus and methods for obtaining acoustic measurements or "logs" of earth formations penetrated by a borehole. More particularly, the invention is directed toward obtaining the acoustic measurements while the borehole is being drilled. The downhole apparatus comprises a plurality of segmented transmitters and receivers which allow the transmitted acoustic energy to be directionally focused at an angle ranging from essentially 0 degree to essentially 180 degrees with respect to the axis of the borehole. Downhole computational means and methods are used to process the full acoustic wave forms recorded by a plurality of receivers. A two way communication system is also used in the preferred embodiment of the invention.
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申请公布号 |
CA2209947(C) |
申请公布日期 |
1999.06.01 |
申请号 |
CA19962209947 |
申请日期 |
1996.01.16 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
LEGGETT, JAMES V., III |
分类号 |
E21B44/00;G01V1/52;(IPC1-7):G01V1/44;E21B47/14 |
主分类号 |
E21B44/00 |
代理机构 |
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代理人 |
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地址 |
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