While drilling system and method
US7178607B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 30, 2004 |
| Grant date | Feb 20, 2007 |
| Priority date | — |
| Expiry date | Feb 19, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V11/002
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A while drilling system and method for determining annular pressure while drilling is provided. The system is positioned in a drilling tool suspended from a drilling rig via a drill string. The system includes at least one drill collar, a while drilling tool and at least one external sensor. The drill collar has a tubular sidewall defining a passage therein for the flow of drilling mud therethrough. The while drilling tool is supported in the passage of the at least one drill collar and selectively retrievable therefrom. The external sensor is positioned in the sidewall of the drill collar and isolated from the passage. The sensor is exposed to the wellbore for measurement thereof and adapted to wirelessly communicate with the while drilling tool. The system is preferably adapted for use in high temperature and pressure environments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.