Apparatus for evaluating rock properties while drilling using drilling rig-mounted acoustic sensors
US9234974B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 2012 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jun 20, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for identifying rock properties in real-time during drilling, are provided. An example of an embodiment of such an apparatus includes one or more acoustic sensors positioned to detect drill sounds emanating from the drill bit and the rock encountered during drilling operations, connected to select components of a drilling rig to maximally pick up the drill sounds of the drill bit engaging rock during drilling operations. The apparatus also includes an inductive telemetry, wireless telemetry, or wired transmitting system. The apparatus also includes a computer to analyze the acoustic signals received from the acoustic sensors through the respective transmitting system for lithology type and petrophysical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.