Data transmission in a drill string
Patent
·
OSTI ID:5728087
Data is transmitted through a drill string by means of acoustical energy by transmitting an acoustical signal for a first predetermined interval and ceasing transmission of the signal for a second predetermined interval to represent a first binary state; ceasing transmission of the signal for a third predetermined interval to represent a second binary state; and combining transmission and cessation of transmission of the signal in binary sequences representative of borehole data.
- Assignee:
- Nl Sperry Sun Inc
- Patent Number(s):
- US 4390975
- OSTI ID:
- 5728087
- Country of Publication:
- United States
- Language:
- English
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