Drilling method and measurement-while-drilling apparatus and shock tool
US6588518B2 · kind B2 · utility
36Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A downhole drilling method comprises producing pressure pulses in drilling fluid using measurement-while-drilling (MWD) apparatus (18) and allowing the pressure pulses to act upon a pressure responsive device (16) to create an impulse force on a portion of the drill string.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.