EP 0099638 A3 19850911 - A METHOD AND SYSTEM OF DATA TRANSMISSION FOR A BOREHOLE LOGGING TOOL
Title (en)
A METHOD AND SYSTEM OF DATA TRANSMISSION FOR A BOREHOLE LOGGING TOOL
Publication
Application
Priority
- US 40033482 A 19820721
- US 40080482 A 19820722
Abstract (en)
[origin: EP0099638A2] A borehole logging system employs a transmitter of acoustic energy pulses and at least one receiver for producing an analog signal representative of the acoustic pulses traveling from the transmitter to the receiver through the formation adjacent the borehole as the logging system is moved through the borehole. A sample-and-hold unit 21 samples the analog signal and an analog-to-digital converter 23 produces a digital word representative of the sampled analog signal. A plurality of digital data words are stored in a memory 24 and converted to a digital serial word for transmission to the surface of the earth over the logging cable 26.
IPC 1-7
IPC 8 full level
E21B 47/14 (2006.01); G08C 19/28 (2006.01)
CPC (source: EP)
E21B 47/14 (2013.01); G08C 19/28 (2013.01)
Citation (search report)
- [Y] US 4210967 A 19800701 - INGRAM JOHN D [US]
- [Y] US 4214231 A 19800722 - DONNALLY WILLIAM [US]
- [Y] GB 2050770 A 19810107 - SHELL INT RESEARCH
- [Y] FR 2306489 A1 19761029 - SCHLUMBERGER PROSPECTION [FR]
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0099638 A2 19840201; EP 0099638 A3 19850911; NO 832489 L 19840123
DOCDB simple family (application)
EP 83303309 A 19830608; NO 832489 A 19830707