Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
Applications for Acoustic Logging (10)
|
- mechanical properties
- fracture gradients - porosity - pore pressure prediction - in-situ stresses - fracture detection - gas detection - lithology identification - seismic calibration - anisotropy |
|
|
Monopole
|
radially symmetric radiation
|
|
|
Dipole
|
antisymmetric radiation
|
|
|
Acoustic Logging is propagation of __ waves.
|
compression
|
|
|
UBI
|
Ultrasonic Borehole Imager
|
|
|
ATV
|
Acoustic televiewer
|
|
|
BTV
|
Borehole televiewer
|
|
|
UBI, ATV, and BTV use __ waves
|
acoustic
|
|
|
Televiewer
|
rotates and sends out sound waves that are reflected
|
|
|
FMI
|
formation micro imaging
|
|
|
BHC
|
borehole compensated
|
|
|
LSS
|
long space sonic
|
|
|
FWL
|
full wave form logging
|
|
|
DSI
|
dipole sonic imaging
|
|
|
BHC has __ transmitters and __ recievers.
|
2 and 4
|
|
|
Problems with BHC
|
suffered from cycle skipping, presence of damaged zone and borehole enlargement
|
|
|
Typical BHC geometry
|
L2 = 3'
|
|
|
Typical LSS geometry
|
L2 = 8'
|
|
|
Biggest advantage of acoustic logging
|
seperating waves
|
|
|
SNR
|
Signal Noise Ratio
|
|
|
SNR =
|
sqrt (sources x receivers)
|
