发明名称 |
Sonic well logging for alteration detection |
摘要 |
A method for determining alteration of a region of an earth formation surrounding an earth borehole, comprising the steps of providing a logging device that is moveable through the borehole; transmitting sonic energy into the formation and receiving, at a plurality of transmitter-to-receiver spacings, sonic energy that has traveled through the formation, and producing signals representative of the received sonic energy for the plurality of transmitter-to-receiver spacings; determining sonic transit times and differential transit times for the respective transmitter-to-receiver spacings; deriving a test statistic from the differential transit times; and determining the presence of alteration of a region of the formations from the test statistic. An associated apparatus for carrying out the method is also described.
|
申请公布号 |
US2003010494(A1) |
申请公布日期 |
2003.01.16 |
申请号 |
US20010741573 |
申请日期 |
2001.02.01 |
申请人 |
BOSE SANDIP;SHENOY RAMACHANDRA GANESH |
发明人 |
BOSE SANDIP;SHENOY RAMACHANDRA GANESH |
分类号 |
G01V1/44;(IPC1-7):E21B47/00 |
主分类号 |
G01V1/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|