Method for measuring bit wear during drilling
US4627276A · kind A · utility
71Cited by
10References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1984 |
| Grant date | Dec 9, 1986 |
| Priority date | — |
| Expiry date | Dec 27, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B44/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for measuring the wear of milled tooth bits during oilwell drilling uses surface and subsurface wellsite sensors to determine averaged values of penetration rate, rotation speed and MWD (measurements-while-drilling) values of torque and weight-on-bit to obtain a real time measurement of tooth wear, drilling efficiency and the in situ shear strength of the rock being drilled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.