Acoustic well logging system having multiplexed filter digitizing
This patent describes a downhole well logging system including a fluid tight sonde sized and adapted for passage through a well bore for use in acoustic well logging for acoustic travel time measurement and full waveform acoustic signal processing comprising: means housed in the sonde for generating a high frequency content acoustic signal having several propagation modes in a well borehole; means for detecting arriving acoustic energy signals propagated through a well borehole and for generating analog electrical signal waveforms representative thereof; selectable analog high pass filter means housed in the sonde for supplying, in response to a control signal, selectably filtered representations of the representative analog waveform electrical signals as input to an analog to digital converter for conversion to digital form; and means housed in the sonde and responsive to signals output from the analog to digital converter, for generating the control signal to the selectable filter.
- Assignee:
- Halliburton Co., Duncan, OK
- Patent Number(s):
- US 4797668
- OSTI ID:
- 6434337
- Country of Publication:
- United States
- Language:
- English
Similar Records
Acoustic well logging method and system
Swept energy source acoustic logging system
Related Subjects
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
ANALOG SYSTEMS
DESIGN
DIGITAL SYSTEMS
EQUIPMENT
EXPLORATION
EXPLORATORY WELLS
GEOLOGIC DEPOSITS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
OPERATION
PETROLEUM DEPOSITS
RESOURCES
SIGNAL CONDITIONING
SONIC LOGGING
TESTING
WELL LOGGING
WELL LOGGING EQUIPMENT
WELLS