发明名称 |
Continuous measurement-while-drilling surveying |
摘要 |
A continuous measurement-while-drilling surveying apparatus includes a fiber optic gyroscope sensitive to rotation about the tool spin axis of the bottom hole assembly and a second fiber optic gyroscope sensitive to rotation of the bottom hole assembly about an axis normal to the tool spin axis. The first gyroscope may be shaped as a torus to accommodate flow of drilling mud through the bottom hole assembly. The outputs of the first and second gyroscopes are processed together with acceleration signals from three accelerometers in a microprocessor which determines the orientation, velocity and position of the bottom hole assembly on a continuous basis.
|
申请公布号 |
US2004089474(A1) |
申请公布日期 |
2004.05.13 |
申请号 |
US20030655594 |
申请日期 |
2003.09.05 |
申请人 |
UNIVERSITY TECHNOLOGIES INTERNATIONAL INC. |
发明人 |
NOURELDIN ABOELMAGD;TABLER HERB;SMITH WINSTON;IRVINE-HALLIDAY DAVE;MINTCHEV MARTIN P. |
分类号 |
E21B47/022;G01C21/16;(IPC1-7):E21B25/16 |
主分类号 |
E21B47/022 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|