Apparatuses and methods for at-bit resistivity measurements for an earth-boring drilling tool
US9394782B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2013 |
| Grant date | Jul 19, 2016 |
| Priority date | — |
| Expiry date | Sep 2, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B10/567
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A cutting element for an earth-boring drilling tool comprises a cutting body having a cutting surface thereon, and a sensor coupled with the cutting surface, the sensor configured to determine resistivity of a contacting formation. An earth-boring drilling tool comprises a bit body and an instrumented cutting element coupled with the bit body. The cutting element includes a cutting body having a cutting surface thereon, and at least one sensor located proximate the cutting surface. The at least one sensor is oriented and configured to determine resistivity of a contacting formation. A method of determining resistivity of a subterranean formation during a drilling operation comprises energizing a sensor of an instrumented cutting element of a drill bit, sensing a return signal flowing on or through the subterranean formation through the instrumented cutting element, and determining a resistivity of the subterranean formation based, at least in part, on the return signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.