发明名称 |
Method and apparatus for acquiring offset checkshot survey data using tube-wave conversion |
摘要 |
A method and apparatus for reliable and low-cost acquisition of offset checkshot survey data using tube wave conversion. An acoustic receiver is deployed in a fluid-filled well, preferably at or near the top thereof. At least one tube-wave conversion point is used, such as an interface between two immiscible fluids, a change in casing geometry or a wellbore constriction. The traveltime of a tube wave from the tube-wave conversion point to the acoustic receiver is determined. Then, a seismic signal is generated at a laterally offset location. The total seismic signal traveltime along a raypath from the source location to the tube-wave conversion point and then upwardly through the fluid-filled well to the acoustic receiver is measured. The previously determined tube-wave traveltime from the conversion point to the acoustic receiver is then subtracted from the total traveltime to obtain the seismic signal traveltime from the source location to the tube-wave conversion point.
|
申请公布号 |
US6591193(B2) |
申请公布日期 |
2003.07.08 |
申请号 |
US20010961592 |
申请日期 |
2001.09.24 |
申请人 |
EXXONMOBIL UPSTREAM RESEARCH COMPANY |
发明人 |
KREBS JEROME R.;CHEN SEN-TSUEN |
分类号 |
G01V1/28;G01V1/42;(IPC1-7):G06F19/00 |
主分类号 |
G01V1/28 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|