Inclinometer system
US6842990B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Jan 18, 2005 |
| Priority date | — |
| Expiry date | Jun 19, 2023 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/022
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The invention relates to a device for measuring lateral displacement of a casing in a vertical bore and includes an inclinometer probe, a cable, and a cable reel with electronics mounted in the reel hub. The probe contains two servo-accelerometers, a microprocessor and an electrical circuit. The servo-accelerometers provide analog signals that indicate the inclination angle of the vertical bore hole. The electrical circuit converts the analog signal from each servo-accelerometers to a digital signal which is read by the microprocessor. The microprocessor analyses the data and transmits the digital encoded data over a twisted-pair cable to a digital display unit connected to the cable reel hub. DC power for the probe is provided by the electronics in the reel hub over the same twisted-pair cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.