Simultaneous digitizing apparatus for an acoustic tool

Patent · Tue Aug 04 04:00:00 EDT 1987

OSTI ID:6222028

Zimmer, M D

This patent describes a well borehole to obtain multiple simultaneous data signals from N acoustic receivers carried by an elongated acoustic logging sonde sized and adapted for passage in the well borehole and suspended by a well logging cable having a single acoustic data conductor, the multiple simultaneous signals formed in response to a single acoustic energy pulse from an acoustic transmitter carried by the sonde, a data collection system comprising: (a) N acoustic receivers supported by an acoustic logging sonde forming N time overlapping acoustic logging output signals from the receivers where N is an integer; (b) first multiplexing means having N inputs connected to the outputs of the N acoustic receivers; (c) second multiplexing means connected to the first multiplexing means; (d) digital converter means operating at a first rate and connected to the second multiplexing means for forming a time based series of digital words representative of the output signals of the N receivers; (e) digital data buffer means in the sonde and connected to the digital converter means for recording in a formatted order a series of digital words from the converter means; (f) an acoustic transmitter monitor means for monitoring acoustic transmitter pulses transmitted by the acoustic transmitter and supplying the monitored transmitter pulses to the second multiplexing means; (g) control means connected to the first and second multiplexing means for controlling operation of the first and second multiplexing means to form a series of digital words.

• Assignee: Halliburton Co., Duncan, OK
• Patent Number(s): US 4684947
• OSTI ID: 6222028
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
BOREHOLES
CABLES
CAVITIES
COMMUNICATIONS
DATA TRANSMISSION
DIGITIZERS
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
EQUIPMENT
GEOLOGIC DEPOSITS
MINERAL RESOURCES
MONITORING
MULTIPLEXERS
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PROBES
PULSE CIRCUITS
PULSES
RECORDING SYSTEMS
RESOURCES
SIGNAL CONDITIONERS
SIGNALS
SONIC LOGGING
SONIC PROBES
TELEMETRY
TIMING CIRCUITS
WELL LOGGING
WELL LOGGING EQUIPMENT