Page 19 - Acoustic Fluid Level Measurements

Index I-1

Petroleum Extension-The University of Texas at Austin
Index

Throughout this index, an f indicates a figure and a t indicates acquisition and recording of, 4-10 to 4-11
a table on that page. to consider real behavior of an acoustic wave, 3-2
converting time scale to depth, 3-14
absorption coefficient, 3-20 to 3-21, 3-22 correctly operating SCSSSV, 2-25
accelerometer, 4-4 examples of, 2-4t
acoustic echo. See echoes. graphical representation of, 3-13 to 3-14
acoustic fluid level measurements. See also gas lift wells; gas guidelines for, 2-1
wells; plunger lift wells; pumping wells. importance of composition in, 3-16
incorrectly operating SCSSSV, 2-25
advantages of over wireline equipment, 9-28 multiple echoes, 2-12f, 3-10f
automatic, 1-9, 7-2 to 7-4, 7-23, 7-26 overlay of, 2-23f
diversity in records of, 2-35 pulse generation systems and accuracy of, 4-7 to 4-8, 4-7f
as an essential tool, 1-22 to 1-23, 3-1 rod-pumped wells, 2-32f
history of, 4-2 to 4-4, 6-3 tasks involved, 3-6
importance of accurate results of, 5-15 unexplained echoes in, 2-2
misleading, 8-5 to 8-13 in wells with multiple producing zones, 7-13, 7-14f
mixed flow calculations from, 6-24 in a well with blast joints, 2-15f
public domain software for, 1-10, 1-11f
quality control of data, 2-1 to 2-2 acoustic resonance, 4-14, 4-15f
recommendations for acquisition of signal for, 2-3 acoustic signal
recommended operating procedures, 4-2, 4-13 to 4-19 digitalization of, 4-11, 4-19
from SBHP, 6-23 history of developments of, 4-4
technological advances and, 4-10 operating procedures in acquiring, 4-15 to 4-16
testing in stabilized conditions, 1-1, 1-6 overview and history of, 4-1 to 4-4
typical analysis of, 1-5f processing techniques used with, 4-1
well performance and, 1-1, 1-4 to 1-5 random, 4-16 to 4-17, 4-17f
acoustic fluid level measurements, examples of recommendations for acquisition of, 2-3
acoustic records and analysis, 2-4f recording and processing, 4-11
corrosion survey of intermediate casing, 2-4t, 2-27 to 2-30 safety considerations while acquiring, 4-11 to 4-12
deviated wellbore, 2-4f, 2-8 to 2-10, 2-8f, 2-10f, 2-20, technological advances in, 4-10
2-22, 2-22f acoustic velocity
ESP well casing shots, 2-4t, 2-15 to 2-20, 2-17f, 2-19f average, 8-14
ESP well with hole in tubing, 2-4t, 2-20 to 2-24 calculating from gas composition, 3-17
simple wellbore with uniform casing and tubing calculating round trip travel time and, 3-23
diameters, 2-4t, 2-5 to 2-8, 2-5t, 2-6f, 2-7f calculation of using known distance, 2-23f
stratified annular gas column, 2-4t, 2-30 to 2-35, 2-32f, 2-37f collar count method and, 2-19f, 2-30f
surface controlled subsurface safety valves (SCSSSV), comparing for reasonability, 5-13 to 5-15, 5-14f, 5-16
2-4t, 2-25 to 2-27 correlation function of RTTT versus, 2-35, 2-35f, 10-12,
tapered tubing and casing liner, 2-4t, 2-10 to 2-11, 2-11f, 10-13f, 10-14, 10-27
2-12f, 2-13 to 2-14, 2-13f defined, 3-1
well with blast joint opposite upper perforations, 2-4t, from depth of tubing, 2-36f
2-14 to 2-16, 2-14f, 2-16f in an ESP well, 2-18
acoustic pulse. See also amplitude attenuation; round trip estimating, 5-13 to 5-15, 5-14t
travel time (RTTT). gas and, 3-2, 3-15 to 3-16, 3-20, 3-23
amplitude versus time, 3-3 to 3-5, 3-3f, 3-4f gas composition and, 2-34 to 2-35, 3-16 to 3-20
converting travel time to distance, 2-1, 5-1 gas lift wells and, 10-6 to 10-7, 10-12, 10-12f, 11-16
generated by plunger, 11-7, 11-9, 11-11, 11-11f history of computation of, 4-2
generation of, 4-5 to 4-10 pressure and temperature and, 3-18f
observed at different depths, 3-4f pressure buildup test and, 7-4, 7-4f
observed at different locations, 3-4 in a simple wellbore, 2-5, 2-7
overview and history of, 4-1 to 4-4 in tubing, 8-14
recommendations on generation of, 4-14, 4-14f, 4-19 variation of, 5-14 to 5-15, 5-14f, 7-4f
recording, 4-10 to 4-11 verifying range of, 2-2
acoustic record analysis. See also digital filters. adiabatic gas law, 3-15
acquiring multiple records for, 2-2, 2-3, 2-9 to 2-10, after-flow
2-10f, 4-17, 10-35 ERCB standards and, 6-3

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