Telemetry equipment in modules
US4468762A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 3, 1981 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Aug 3, 2001 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A device for the remote control of data out of a drill hole to the earth surface during the operation of a drilling device which comprises a drill bit, a drill string and a pump raising a flushing liquid into the surrounding annular space of the drill hole and downward into flow channels of the drill string, consisting of devices arranged in the drill string for the ascertaining of desired informational data for the conversion of the informational data into a series of electrical control signals for the producing of pressure pulses in the downward directed flow of the flushing liquid as a function of the control signals and for the production of the necessary electrical energy, characterized in such a way that the devices part of a coaxial support within the flow channels of the drill string form a structural unit and are arranged over each other; separated axial sections of the structural unit are grouped and that at least the topmost section of the structural unit is constructed as an independent component and by means of an energizable pick-up tool is detachable from the rest of the structural units from the earth surface and is capable of being pulled up through the flow channe…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.