Drilling system with downhole apparatus for determining parameters of interest and for adjusting drilling direction in response thereto
US5812068A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 1995 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Dec 12, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The present invention provides a measurement-while-drilling (MWD) system having a downhole computer and multiple downhole sensors. Relatively large amounts of basic or "raw" data are measured by downhole sensors, and these data are processed within a downhole computer to be reduced to parameters of interest, which may be utilized to control the drilling operation by downhole devices, stored downhole, telemetered to the surface, or both. The measurements may be correlated downhole with stored reference data thereby providing additional information pertaining to the drilling operation. Downhole depth correlation between downhole measured parameters may be made by utilizing surface determined or downhole determined borehole depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.