System and method for transmitting signals downhole
US10738598B2 · kind B2 · utility
1Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 18, 2018 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Jan 29, 2039 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B47/24
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for operating a drilling system that has a mud pump disposed on an earth surface and a drill string with a bottom hole assembly (BHA) in a borehole. The method involves turning the mud pump ON or OFF according to a pre-determined sequence so that the mud flow in the borehole fluctuates between high and low. The mud pulser in the bottom hole assembly senses the fluctuation in the mud flow and generates a binary signal accordingly. The mud pulser further sends the binary signal to a measurement-while-drilling (MWD) tool in the bottom hole assembly. The binary signal executes one or more firmware in the MWD tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.