c revised 09/30/86 by cmp removed references to SEL programs 00010000 C*********************************************************************** C COPYRIGHT ATLANTIC RICHFIELD COMPANY 1991 * C*********************************************************************** c revised 10/21/86 by cmp added new processes 00020000 c revised 04/07/87 by cmp add/deleted processes for revision 5 00030000 c revised 10/17/88 by cmp add/deleted processes for version 8 00040000 c revised 09/03/93 by esn add/deleted processes for version 9 00050000 CUPAGE FUNCTN 00060002 CUINDX 00070000 CUINDX SPARC PROCESSES INDEXED BY FUNCTION 00080000 CU SPARC Processes by Function 00090000 CUINDX Amplitude Envelope 00100000 CU ***AMPE*** - amplitude envelope 00110000 CU 00120000 CU QUAD -- amplitude envelope; instantaneous frequency; instan- 00130000 CU taneous phase; smoothed instantaneous frequency 00140000 CU 00150000 CU 00160000 CUINDX Amplitude Versus Offset Programs 00170000 CU ***AVO*** - amplitude versus offset programs 00180000 CU 00190000 CU AVEL -- combined AVO and velocity analysis (see VANL - AVEL) 00200000 CU 00210000 CU AVOP -- RMS amplitude and AVO parameter calculation 00220000 CU 00230000 CU LITH -- gathers all traces in a CDP, calculates a transmission 00240000 CU angle in radians for each sample in each trace and uses 00250000 CU this information to produce lithologic data 00260000 CU 00270000 CU HZAA -- performs amplitude analysis along selected reflection 00280000 CU horizons and creates aux. traces to be displayed in HZAD 00290000 CU 00300000 CU HZAD -- displays amplitude analysis performed by HZAA 00310000 CU 00320000 CU 00330000 CUINDX Autocorrelation Programs 00340000 CU ***ACORR*** - autocorrelation programs 00350000 CU 00360000 CU CORR -- autocorrelation 00370000 CU 00380000 CU 00390000 CU EJECT 00400000 CUINDX Coherency Programs 00410000 CU ***COHER*** - coherency programs 00420000 CU 00430000 CU CNAX -- analyzes the coherent noise in a seismic section and 00440000 CU displays the energy spectrum in the frequency-phase domain00450000 CU 00460000 CU CNAC -- F-V analysis for coherent noise attenuation 00470000 CU (see COLOR - CNAC) 00480000 CU 00490000 CU CNAY -- attenuates high amplitude coherent noise trains according 00500000 CU to a known frequency-phase velocity relation 00510000 CU 00520000 CU COST -- computes relative static lags & adjusts data based on 00530000 CU these lags in a time invariant or variant manner 00540000 CU 00550000 CU CSTK -- stacks cdp's after both maximizing the signal-to-noise 00560000 CU ratio and producing the same signal amplitude as if 00570000 CU there were no weighting of the cdp trace 00580000 CU 00590000 CU CS3D -- 3-D coherency statics (see STAT - CS3D) 00600000 CU 00610000 CU EQMO -- equal moveout multiple suppression 00620000 CU (see F/K, MULTP - EQMO) 00630000 CU 00640000 CU FANF -- (also known as 2-D, dip, velocity, or pie-slice 00650000 CU filtering) filters noise that lies within the frequency 00660000 CU range of the signal but which arrives at the receiver 00670000 CU at an angle or velocity different from reflections 00680000 CU (see F/K, MULTP - FANF) 00690000 CU 00700000 CU FF2D -- fan filter for 2-D data in F-X domain 00710000 CU (see F/K, MULTP - FF2D) 00720000 CU 00730000 CU FF3D -- fan filter for 3-D data in F-X domain 00740000 CU (see F/K, MULTP - FF3D) 00750000 CU 00760000 CU FX3D -- spatial deconvolution of 3-D stacked data 00770000 CU (see MULTP - FX3D) 00780000 CU 00790000 CU RAMR -- radon transform multiple rejection 00800000 CU (see F/K, MULTP - RAMR) 00810000 CU 00820000 CU RAVE -- time-varying F-X predictive filtering 00830000 CU (see MULTP - RAVE) 00840000 CU 00850000 CU 00860000 CU EJECT 00870000 CUINDX Color Displays 00880000 CU ***COLOR*** - color displays 00890000 CU 00900000 CU CD3D -- cdp fold; horizon time; horizon velocity; average offset 00910000 CU 00920000 CU CNAC -- F-V analysis for coherent noise attenuation 00930000 CU (see COHER - CNAC) 00940000 CU 00950000 CU CPRO -- contour and profile displays of the 3-D velocity field, 00960000 CU including contours of time, velocity, depth, or interval 00970000 CU velocity along horizons or time slices 00980000 CU 00990000 CU FANA -- frequency vs dip or frequency vs wavenumber (also has 01000000 CU electrostatic plotter capability) 01010000 CU 01020000 CU HPLT -- color display of any trace header variable using two 01030000 CU other trace header variables as X and Y axes 01040000 CU 01050000 CU HZAD -- selects matrix traces created in HZAA and displays 01060000 CU amplitude versus offset information in color 01070000 CU 01080000 CU QULR -- trace only; amplitude envelope; instantaneous phase; 01090000 CU instantaneous frequency; weighted frequency; apparent 01100000 CU polarity; interval velocity; rms velocity impedance; 01110000 CU transit time; unspecified 01120000 CU 01130000 CU SP3D -- x-y coordinate grid plot of the shot or receiver statics 01140000 CU calculated in the "TRAX" or "TR3D" programs 01150000 CU 01160000 CU TFAN -- time-frequency-amplitude color display 01170000 CU (see DISP, F/K - TFAN) 01180000 CU 01190000 CU 01200000 CUINDX Dbias/'DC' Removal Processes 01210000 CU ***DB/DC*** - dbias/'dc' removal processes 01220000 CU 01230000 CU DBIA -- removes bias factor 01240000 CU EJECT 01250000 CUINDX Deconvolution processes 01260000 CU ***DECON*** - deconvolution processes 01270000 CU 01280000 CU DCNX -- deconvolution with autocorrelation averaging 01290000 CU 01300000 CU DCON -- least squares inverse filtering: spiking (removes 01310000 CU effects of wave forms) and predictive (removes effects 01320000 CU of reverberations); minimum-phase time domain operator 01330000 CU using Wiener-Levinson algorithm; spiking operator is a 01340000 CU special case of the predictive operator and is 01350000 CU equivalent (within a scale factor) to a unit prediction 01360000 CU distance operator (see MULTP - DCON) 01370000 CU 01380000 CU DDEC -- spiking deconvolution by means of the "direct decon- 01390000 CU volution" method; based on refining initial wavelet and 01400000 CU reflectivity estimates through iteratively improving 01410000 CU the match between the implied synthetic trace and the 01420000 CU actual field trace 01430000 CU 01440000 CU FX3D -- spatial deconvolution of 3-D stacked data 01450000 CU (see COHER - FX3D) 01460000 CU 01470000 CU GEND -- generalized deconvolution 01480000 CU 01490000 CU IDCN -- instrument deconvolution: compensates for the effects 01500000 CU of the data acquisition equipment of the seismic wave- 01510000 CU let or transforms the effects of one acquisition system 01520000 CU to another 01530000 CU 01540000 CU MNVD -- minimum variance deconvolution similar to program "DCON"; 01550000 CU for very short operation windows, "MNVD" should produce 01560000 CU a more reliable result than "DCON"; very slow program 01570000 CU 01580000 CU QCMP -- attenuation compensation via inverse Q filter 01590000 CU 01600000 CU RAVE -- time-varying F-X predictive filtering 01610000 CU (see COHER - RAVE) 01620000 CU 01630000 CU SCDA -- cepstrun extraction for surface consistent dcon 01640000 CU 01650000 CU SCDB -- 3-D surface consistent cepstral decomposition 01660000 CU 01670000 CU SCDC -- surface consistent deconvolution 01680000 CU 01690000 CU SIGD -- signature deconvolution (deterministic process) 01700000 CU 01710000 CU SURF -- cepstrum extraction and decomposition for surface 01720000 CU consistent decon 01730000 CU 01740000 CU SURG -- apply surface consistent decon operators 01750000 CU 01760000 CU VCOR -- Vibroseis correlation (see MULTP - VCOR) 01770000 CU 01780000 CU ZDCN -- operates only on amplitude spectrum which is flattened 01790000 CU in the frequency domain while the phase spectrum is left 01800000 CU unchanged 01810000 CU 01820000 CU 01830000 CUINDX Depth Conversion Processes 01840000 CU ***DPTCNV*** - depth conversion processes 01850000 CU 01860000 CU DPTH -- converts a time section to a depth section 01870000 CU EJECT 01880000 CUINDX Display Processes 01890000 CU ***DISP*** - display processes 01900000 CU 01910000 CU CD3D -- color display (see COLOR - CD3D) 01920000 CU 01930000 CU CORA -- multi-trace correlation analysis 01940000 CU 01950000 CU CPRO -- color contour and profile display (see COLOR - CPRO) 01960000 CU 01970000 CU CVPL -- composite velocity function display 01980000 CU 01990000 CU FANA -- frequency vs dip or frequency vs wavenumber (has both 02000000 CU electrostatic and color capability, see COLOR, F/K -FANA) 02010000 CU 02020000 CU GDSP -- maps the following for 3-D data: shots, receivers, depth 02030000 CU points, bin centers, fold, bin centers of gravity, x/y 02040000 CU coordinate axes, and fold per bin in up to 8 offset 02050000 CU divisions. May be used where applicable for 2-D data. 02060000 CU 02070000 CU GMAP -- maps the following: shots, receivers & cdp's; shots & 02080000 CU receivers; cdp's & average offset (3-D only); cdp's; 02090000 CU receivers 02100000 CU 02110000 CU HPLT -- displays trace header values in color 02120000 CU 02130000 CU HZAD -- horizon attribute display (used mainly for AVO) 02140000 CU 02150000 CU HZVD -- horizontal velocity analysis display 02160000 CU 02170000 CU QULR -- color display (see COLOR - QULR) 02180000 CU 02190000 CU SP2D -- 2-D surface consistent statics plot 02200000 CU 02210000 CU SP3D -- 3-D surface consistent statics plot (see COLOR - SP3D) 02220000 CU 02230000 CU STKP -- stacking diagram plots 02240000 CU 02250000 CU SRVY -- composite survey display (must precede "READ") 02260000 CU 02270000 CU TFAN -- time-frequency-amplitude color display 02280000 CU (see COLOR, F/K - TFAN) 02290000 CU 02300000 CU TSLC -- 3-D time slice generation 02310000 CU 02320000 CU VELD -- velocity analysis display; a plot of the coherence 02330000 CU measure called semblance generated by "VELA" velocity 02340000 CU analysis 02350000 CU 02360000 CU VPRO -- iso-velocity plot of rms velocities (suggested sequence: 02370000 CU "PROC VELF READ NMOC VPRO WRIT") 02380000 CU 02390000 CU VSPG -- display geophysical parameters from vsp data 02400000 CU 02410000 CU 02420000 CUINDX Editing Processes (Data or Trace Headers) 02430000 CU ***EDIT*** - editing programs (data or trace headers) 02440000 CU 02450000 CU ACHK -- amplitude check (despiking); identifies and despikes 02460000 CU traces based on one of the following: 1) absolute value; 02470000 CU 2) absolute mean; 3) second difference; 4) decay time; 02480000 CU and 5) energy burst ratio 02490000 CU 02500000 CU AIED -- automatic edit based on artificial intelligence 02510000 CU 02520000 CU EDIT -- contains the following processes: trace kill; trace 02530000 CU reverse; individual trace kill/reverse; kill by receiver; 02540000 CU reverse by receiver 02550000 CU 02560000 CU HCPY -- copy depth point trace header values from one dataset to 02570000 CU another 02580000 CU 02590000 CU HDMP -- ARCY trace header dump; prints specified trace header 02600000 CU values from selected traces 02610000 CU 02620000 CU HEDT -- kill or reverse polarity of traces based on their headers 02630000 CU (see GMDEF - HEDT) 02640000 CU 02650000 CU OFST -- offset analysis; retrieves offset distance statistics from02660000 CU trace headers. A list of minimum offset, maximum offset, 02670000 CU and average offset distance per cdp is supplied to the 02680000 CU user 02690000 CU 02700000 CU PANL -- panel repetition (i.e., the same traces/cdp back-to-back) 02710000 CU 02720000 CU PIKL -- load pick file times into trace headers (see STAT - PIKL) 02730000 CU 02740000 CU RMOD -- record modification (trace headers) 02750000 CU 02760000 CU SELT -- trace select (for processing specific/selected traces) 02770000 CU 02780000 CU SLST -- shotpoint list; assigns specific shotpoint numbers to 02790000 CU specific field file numbers 02800000 CU 02810000 CU SWAT -- automatic trace edit by similarity weighting 02820000 CU 02830000 CU SL3D -- 3-D polygon select 02840000 CU 02850000 CU TDIF -- trace differencing process 02860000 CU 02870000 CU TRAV -- 3-D traverse selection (see SORT - TRAV) 02880000 CU 02890000 CU TRIM -- automatic editting of high-amplitude seismic noises 02900000 CU EJECT 02910000 CUINDX Filter Processes 02920000 CU ***FLTR*** - filter processes 02930000 CU 02940000 CU FLTR -- frequency filtering; filters out unwanted frequencies 02950000 CU 02960000 CU OPAP -- general trace operator application; also allows filtering 02970000 CU with a user-input filter on card images 02980000 CU 02990000 CU PHAS -- apply a constant phase shift 03000000 CU 03010000 CU REJH -- monofrequency (highline) rejection filtering; performs 03020000 CU a frequency analysis on the input traces to determine 03030000 CU the true value of an estimated contaminant frequency 03040000 CU (such as one due to power line 60 hz interference) and 03050000 CU removes it from the seismic input traces. 03060000 CU 03070000 CU SPEC -- spectral shaping: applies specified frequency weighting 03080000 CU to data in shotpoint or cdp modes; only amplitude spec- 03090000 CU trum is weighted (i.e., no phase spectrum weighting) 03100000 CU 03110000 CU SPEW -- time-variant spectral whitening 03120000 CU 03130000 CU WRPF -- Western Geophysical radially predictive filter 03140000 CU 03150000 CU 03160000 CUINDX Frequency Analysis Processes 03170000 CU 03180000 CU ***FANAL*** - frequency analysis processes 03190000 CU 03200000 CU FRAN -- frequency analysis: power & phase; power spectrum; both 03210000 CU 03220000 CU FREQ -- frequency analysis: same as "FRAN" except that the 03230000 CU printer plots are multi-page and the data is not 03240000 CU decimated 03250000 CU EJECT 03260000 CUINDX Frequency-Wavenumber Domain Processes 03270000 CU ***F/K*** - frequency - wavenumber domain processes 03280000 CU 03290000 CU DMFK -- F-K dip moveout (see MIGRA, NMO - DMFK) 03300000 CU 03310000 CU DM3D -- 3-D Kirchoff dip moveout (see MIGRA, NMO - DM3D) 03320000 CU 03330000 CU EQMO -- equal moveout multiple suppression 03340000 CU (see COHER, MULTP - EQMO) 03350000 CU 03360000 CU FANA -- 2-D frequency-wavenumber analysis (see COLOR, 03370000 CU DISP - FANA) 03380000 CU 03390000 CU FANF -- (also known as 2-D, dip, velocity, or pie-slice 03400000 CU filtering) filters noise that lies within the frequency 03410000 CU range of the signal but which arrives at the receiver 03420000 CU at an angle or velocity different from reflections 03430000 CU (see COHER, MULTP - FANF) 03440000 CU 03450000 CU FF2D -- fan filter for 2-D data in F-X domain 03460000 CU (see COHER, MULTP - FF2D) 03470000 CU 03480000 CU FF3D -- fan filter for 3-D data in F-X domain 03490000 CU (see COHER, MULTP - FF3D) 03500000 CU 03510000 CU FXIN -- trace interpolation based on F-X domain (see INTRP - FXIN)03520000 CU 03530000 CU M2FK -- migration using an F-K domain algorithm which assumes a 03540000 CU constant velocity of propogation (see MIGRA - M2FK) 03550000 CU 03560000 CU M3FK -- 3-D F-K migration (see MIGRA - M3FK) 03570000 CU 03580000 CU RAMR -- radon transform multiple rejection 03590000 CU (see COHER, MULTP - RAMR) 03600000 CU 03610000 CU TFAN -- time-frequency-amplitude color display 03620000 CU (see DISP, F/K - TFAN) 03630000 CU EJECT 03640000 CUINDX Gain Processes 03650000 CU ***GAIN*** - gain processes 03660000 CU 03670000 CU AGCS -- automatic gain control 03680000 CU 03690000 CU AMPS -- computes & corrects surface consistent residual amplitude 03700000 CU anomalies for 2-D data 03710000 CU 03720000 CU EQUL -- trace amplitude equalization 03730000 CU 03740000 CU RAMS -- relative amplitude scaling 03750000 CU 03760000 CU RARS -- relative amplitude record scaling 03770000 CU 03780000 CU TRCS -- trace scaling: power of time (t**n); exponential 03790000 CU function of time (in db's); programmed gain curve (in 03800000 CU time-percent pairs); spherical divergence gain curve 03810000 CU 03820000 CU 03830000 CU 03840000 CUINDX Geometry/Line Definitions 03850000 CU ***GMDEF*** - geometry/line definitions 03860000 CU 03870000 CU DG3D -- diagonal line generator 03880000 CU 03890000 CU GDSP -- geometry display (see DISP - GDSP) 03900000 CU 03910000 CU GEOM -- 3-D geometry binning 03920000 CU 03930000 CU GMAP -- geometry display (see DISP - GMAP) 03940000 CU 03950000 CU GM3D -- 2-D & 3-D line geometry (see DISP - SRVY) 03960000 CU 03970000 CU HEDT -- kill or reverse polarity of traces based on their headers 03980000 CU (see EDIT - HEDT) 03990000 CU 04000000 CU NAVC -- determine navigation shotpoint 04010000 CU 04020000 CU NINA -- navigation input and analysis 04030000 CU 04040000 CU SISG -- SIS database input generation 04050000 CU 04060000 CU SRVY -- composite survey display (must precede "READ") 04070000 CU 04080000 CU SU3D -- 3-D rebin and sum of stacked traces 04090000 CU 04100000 CU VSPE -- vertical seismic profile geometry (see VSP - VSPE) 04110000 CU EJECT 04120000 CUINDX Horizon Analysis 04130000 CU ***HORIZ*** - horizon analysis 04140000 CU 04150000 CU CPRO -- contour and profile display (see DISP - CPRO) 04160000 CU 04170000 CU HZAA -- horizon attribute analysis 04180000 CU 04190000 CU HZAD -- horizon attribute display (see DISP - HZAD) 04200000 CU 04210000 CU HZVA -- horizon velocity analysis 04220000 CU 04230000 CU HZVD -- horizon velocity analysis display (see DISP - HZVD) 04240000 CU 04250000 CU LITH -- lithologic trace program used for AVO analysis 04260000 CU 04270000 CU VF3D -- general purpose 3-D velocity function specification 04280000 CU program (see NMO - VF3D) 04290000 CU 04300000 CU 04310000 CU 04320000 CUINDX Trace Interpolation 04330000 CU ***INTRP*** - trace interpolation 04340000 CU 04350000 CU D3NT -- 3-D post-stack trace interpolation 04360000 CU 04370000 CU FXIN -- trace interpolation based on F-X domain (see F/K - FXIN) 04380000 CU 04390000 CU XSMP -- 2-D post-stack dataset resampling 04400000 CU EJECT 04410000 CUINDX Migration Processes 04420000 CU ***MIGRA*** - migration processes 04430000 CU 04440000 CU The goal of the migration of seismic data is to take the seismic 04450000 CU wavefield as recorded at the surface and extract the wavefield 04460000 CU at depth at time zero. 04470000 CU 04480000 CU DMFK -- 2-D F-K dip moveout (see F/K, NMO - DMFK) 04490000 CU 04500000 CU DM3D -- 3-D Kirchoff dip moveout (see F/K, NMO - DM3D) 04510000 CU 04520000 CU DMIG -- diffraction migration 04530000 CU 04540000 CU KMIG -- Kirchhoff wave equation migration 04550000 CU 04560000 CU MPFK -- 2-D pre-stack F-K migration 04570000 CU 04580000 CU M2FK -- migration using an F-K domain algorithm which assumes a 04590000 CU constant velocity of propogation (see F/K - M2FK) 04600000 CU 04610000 CU M3FK -- 3-D F-K migration (see F/K - M3FK) 04620000 CU 04630000 CU SMIG -- finite difference migration 04640000 CU 04650000 CU SM3D -- 3-D finite difference migration 04660000 CU 04670000 CU UMIG -- finite difference unmigration used primarily with 04680000 CU pre-stack F-K migration and post-stack depth migration 04690000 CU 04700000 CU VADM -- pre-stack depth migration and focusing analysis 04710000 CU 04720000 CU VCFK -- F-K pre-stack migration interpolation 04730000 CU 04740000 CU ZMIG -- 2-D 45-degree poststack depth migration; obtains the 04750000 CU migrated solution by formulating the wave equation in 04760000 CU the frequency domain & decoupling the result to form two 04770000 CU one-way wave equations 04780000 CU 04790000 CU ZMPS -- 2-D 45-degree pre-stack depth migration 04800000 CU 04810000 CU ZM2D -- 2-D post-stack depth migration 04820000 CU EJECT 04830000 CUINDX Multiple Processes 04840000 CU ***MULTP*** - multiple processes 04850000 CU 04860000 CU DCON -- (see DECON - DCON) 04870000 CU try predictive deconvolution and vary the predictive 04880000 CU distance from zero lag to about 50 ms above multiple; 04890000 CU design operator to be continuously centered over 04900000 CU multiple; usually reduces multiple interference by 04910000 CU about 6 db; application is more appropriate to marine 04920000 CU data 04930000 CU 04940000 CU EQMO -- equal moveout multiple suppression 04950000 CU (see COHER, F/K - EQMO) 04960000 CU 04970000 CU FANF -- (see COHER, F/K - FANF) 04980000 CU (mainly marine application) apply water velocity (or 04990000 CU best calculated multiple velocities) to gathers and use 05000000 CU "FANF" to refect flat horizons starting at first known 05010000 CU waterbottom multiple time (starting times must be care- 05020000 CU fully varied with multiple start time) 05030000 CU 05040000 CU FF2D -- fan filter for 2-D data in F-X domain 05050000 CU (see COHER, F/K - FF2D) 05060000 CU 05070000 CU FF3D -- fan filter for 3-D data in F-X domain 05080000 CU (see COHER, F/K - FF3D) 05090000 CU 05100000 CU MUTE -- (see MUTE - MUTE) 05110000 CU try surgically muting near traces through known multiple 05120000 CU zone to help increase discrimination distance; upon 05130000 CU stacking, multiples may be attenuated 05140000 CU 05150000 CU RAMR -- radon transform multiple rejection 05160000 CU (see COHER, F/K - RAMR) 05170000 CU 05180000 CU RCOR -- selective trace retrocorrelation: obtained by cor- 05190000 CU relating the trace with a time-reversed version of 05200000 CU itself; a suite of retrocorrelated traces resembles a 05210000 CU record section in which the primary reflections have been 05220000 CU suppressed; a useful tool for identification of multiples 05230000 CU 05240000 CU SDSP -- (see SDOME - SDSP) 05250000 CU 05260000 CU STKW -- (see STACK - STKW) 05270000 CU improves the attenuation of long period multiples by 05280000 CU increasing the velocity discriminabilty of the 05290000 CU stacking process; also suppresses the portions of the 05300000 CU multiples which are not completely eliminated by F-K 05310000 CU filtering or the standard stack process - the near- 05320000 CU offset portions that are almost horizontal even after 05330000 CU move-out for the primary events 05340000 CU 05350000 CU SWAT -- similarity weighting of trace amplitudes 05360000 CU 05370000 CU VCOR -- Vibroseis correlation (see DECON - VCOR) 05380000 CU 05390000 CU 05400000 CUINDX Mute Processes 05410000 CU ***MUTE*** - MUTE processes 05420000 CU 05430000 CU MUTE -- front-end or surgical muting by distance, by trace, or 05440000 CU by water layer (see MULTP - MUTE) 05450000 CU 05460000 CU MU3D -- re-apply front-end mute to a 3-D stacked dataset 05470000 CU 05480000 CU 05490000 CUINDX NMO Processes 05500000 CU ***NMO*** - nmo processes 05510000 CU 05520000 CU DMFK -- fast FK dip moveout correction (see F/K, MIGRA - DMFK) 05530000 CU 05540000 CU DM3D -- 3-D Kirchoff dip moveout (see F/K, MIGRA - DM3D) 05550000 CU 05560000 CU NMOC -- normal move-out correction 05570000 CU 05580000 CU VELF -- general purpose velocity function specification program 05590000 CU 05600000 CU VF3D -- general purpose 3-D velocity function specification 05610000 CU program 05620000 CU 05630000 CU 05640000 CUINDX Read/Write Processes 05650000 CU ***R/W*** - read/write processes 05660000 CU 05670000 CU CRDA -- creates a direct access dataset 05680000 CU 05690000 CU GEOM -- reads and writes trace header information to perm. file 05700000 CU 05710000 CU NINA -- reads navigation information 05720000 CU 05730000 CU READ -- reads traces and updates headers 05740000 CU 05750000 CU WRIT -- writes traces with ARCY headers 05760000 CU 05770000 CU WT3D -- write blocked traces with ARCY header 05780000 CU 05790000 CU 05800000 CUINDX Salt Dome Stack Processes 05810000 CU ***SDOME*** - salt dome processes 05820000 CU 05830000 CU SDSP -- salt dome stack preparation 05840000 CU EJECT 05850000 CUINDX Sort Processes 05860000 CU ***SORT*** - sort processes 05870000 CU 05880000 CU COMD -- creates a set of traces, each composed of a window section05890000 CU from several requested shots for a specific receiver 05900000 CU location 05910000 CU 05920000 CU GATH -- performs one of the following sort types: by offset 05930000 CU within cdp; by shotpoint within cdp; reverse shotpoint 05940000 CU within cdp (fastest); by offset within each receiver 05950000 CU point; by shotpoint within each receiver point; by trace #05960000 CU within each shotpoint; common offset point 05970000 CU 05980000 CU LMPA -- generate angle gathers 05990000 CU 06000000 CU MSAM -- master and slave merge 06010000 CU 06020000 CU ORDR -- trace re-order between two datasets 06030000 CU 06040000 CU SELT -- selects traces and will sort them into any desired 06050000 CU order based on trace number or distance 06060000 CU 06070000 CU SORT -- sort trace data into any order based on trace header value06080000 CU 06090000 CU TRAV -- 3-D traverse selection (see EDIT - TRAV) 06100000 CU 06110000 CU 06120000 CUINDX Stacking Processes 06130000 CU ***STACK*** - stacking processes 06140000 CU 06150000 CU ANST -- stack of angle gathers for color plotting 06160000 CU 06170000 CU CSTK -- see COHER - CSTK (coherency stack) 06180000 CU 06190000 CU P100 -- produce 100% stacks from shot points 06200000 CU 06210000 CU STAK -- common cdp, shotpoint, or receiver stack 06220000 CU 06230000 CU STKW -- see MULTP - STKW (weighted stack) 06240000 CU 06250000 CU STOC -- stacking by offset continuation 06260000 CU EJECT 06270000 CUINDX Statics Processes 06280000 CU ***STAT*** - statics processes 06290000 CU 06300000 CU COST -- see COHER - COST (coherency statics) 06310000 CU 06320000 CU CS3D -- 3-D coherency statics (see COHER - CS3D) 06330000 CU 06340000 CU DATM -- event flattening 06350000 CU 06360000 CU DPDE -- computes average 3-D depth point datum elevation 06370000 CU 06380000 CU FLAT -- horizon flattening; corrects each trace to a specified 06390000 CU datum by means of an accurately calculated static shift 06400000 CU 06410000 CU LAGX -- computes static lag values for use in the calculation of 06420000 CU surface consistent residual statics; employs one-sided 06430000 CU method in which the pilot is formed of previously 06440000 CU analyzed and static aligned traces; designed to precede 06450000 CU "TRAC" or "TRAX" ("TRAC" is coded to take the 'NONE' 06460000 CU option; also can be used with TR3D) 06470000 CU 06480000 CU LA3D -- areal pilot static value estimation for 3-D data; 06490000 CU designed to replace LAGX and precedes TR3D 06500000 CU 06510000 CU MLRS -- multi-layer refraction statics 06520000 CU 06530000 CU PICK -- automatic first arrival picking (for refraction statics) 06540000 CU 06550000 CU PIKL -- load pick file times into trace headers (see EDIT - PIKL) 06560000 CU 06570000 CU SCHS -- surface consistent hand statics 06580000 CU 06590000 CU SP2D -- see DISP - SP2D (2-D statics plot) 06600000 CU 06610000 CU SP3D -- see DISP - SP3D (3-D statics color plot) 06620000 CU 06630000 CU STAH -- apply static from the trace header 06640000 CU 06650000 CU STAP -- statics application (21 processes available) 06660000 CU 06670000 CU STAT -- elevation & weathering statics for use by "GM3D" 06680000 CU 06690000 CU STAX -- apply shot, depth point, or geophone statics 06700000 CU 06710000 CU TRAC -- 2-D surface consistent residual statics 06720000 CU 06730000 CU TRAK -- TRAC with external pilot option 06740000 CU 06750000 CU TRAX -- 2-D or 3-D surface consistent residual statics must be 06760000 CU preceded by a lag measurement process such as "LAGX"; 06770000 CU "TRAX";, run one line at a time, can be used to supply 06780000 CU the required lags 06790000 CU 06800000 CU TR3D -- 3-D time residual analysis and correction must be preceded06810000 CU by "LA3D" 06820000 CU 06830000 CU TS3D -- smooth TR3D computed depth point solution 06840000 CU 06850000 CU VSPF -- VSP statics application 06860000 CU 06870000 CU 06880000 CUINDX Summation Processes 06890000 CU ***SUMM*** - summation processes 06900000 CU 06910000 CU OBIS -- offset binning and summing 06920000 CU 06930000 CU RSUM -- receiver summing: sums traces from common receiver 06940000 CU locations to simulate source arrays 06950000 CU 06960000 CU SU3D -- stacked 3-D sum and rebin, will sum stacked traces 06970000 CU inline and crossline and recalculate bin center 06980000 CU 06990000 CU TMIX -- trace mix: sum of stacked traces 07000000 CU 07010000 CU TSUM -- trace summing within the same shotpoint, cdp or file 07020000 CU 07030000 CU VSUM -- vertical summation or merging of similar traces across a 07040000 CU shotpoint, file, or cdp records based on some given 07050000 CU summation criteria 07060000 CU 07070000 CU 07080000 CUINDX Synthetic/Model Processes 07090000 CU ***SYN*** - synthetic/model processes 07100000 CU 07110000 CU DGEN -- data generation 07120000 CU 07130000 CU EGEN -- event generation 07140000 CU 07150000 CU FILL -- generates zero fill traces 07160000 CU 07170000 CU LITH -- lithologic trace program used for amplitude versus 07180000 CU offset analysis 07190000 CU 07200000 CU MERJ -- simulates quad output for synthetic log traces 07210000 CU 07220000 CU SLOG -- seismic log conversion program 07230000 CU 07240000 CU EJECT 07250000 CUINDX Velocity Analysis & Displays 07260000 CU ***VANL*** - velocity analysis & displays 07270000 CU 07280000 CU AVEL -- combined AVO and velocity analysis (see AVO - AVEL) 07290000 CU 07300000 CU CPRO -- color iso-velocity profile (see DISP - CPRO) 07310000 CU 07320000 CU CVAN -- constant velocity analysis 07330000 CU 07340000 CU CVPL -- composite velocity function display (see DISP - CVPL) 07350000 CU 07360000 CU HZVA -- horizontal velocity analysis 07370000 CU 07380000 CU HZVD -- horizontal velocity analysis display (see DISP - HZVD) 07390000 CU 07400000 CU PRCP -- interval velocity model display 07410000 CU 07420000 CU RTVL -- retrieve velocity functions from VF3D volume 07430000 CU 07440000 CU VELA -- velocity analysis: reflection events on cdp records 07450000 CU describe a hyperbolic curve and to stack the cdp traces, 07460000 CU the NMO must be known and applied so that the events are 07470000 CU 'flattened' and consequently summed in phase 07480000 CU 07490000 CU VDAT -- datum application to VELF cards 07500000 CU 07510000 CU VDDM -- reformat for velocity display from VADM 07520000 CU 07530000 CU VELD -- velocity analysis display (see DISP - VELD) 07540000 CU 07550000 CU VFFK -- reformat for velocity display from MPFK 07560000 CU 07570000 CU VOVR -- build velocity overlay traces 07580000 CU 07590000 CU VPRO -- iso-velocity profile of rms velocities (see DISP - VPRO) 07600000 CU 07610000 CU VSFK -- generate constant velocity displays for MPFK 07620000 CU 07630000 CU VSHF -- time shift VELF cards 07640000 CU 07650000 CU VSPA -- traveltime analysis for vertical seismic profile (vsp): 07660000 CU calculates the cross-correlation function between pairs 07670000 CU of adjacent traces (sucessive depths) in a VSP for the 07680000 CU purpose of estimating interval and average velocities; 07690000 CU 07700000 CU 07710000 CU EJECT 07720000 CUINDX Vertical Seismic Profile Processes 07730000 CU ***VSP*** - vertical seismic profile processes 07740000 CU 07750000 CU DATM -- event flattening 07760000 CU 07770000 CU VSPA -- traveltime analysis for vsp (see VANL - VSPA) 07780000 CU 07790000 CU VSPB -- spectral shaping for vsp data: corrects vsp data for 07800000 CU source variations as measured by a monitor receiver; 07810000 CU "VSPB" is normally run before vertical summing over all 07820000 CU shots with a given depth 07830000 CU 07840000 CU VSPC -- vsp spherical divergence processor: corrects zero 07850000 CU source-to-borehole offset vsp data for spherical 07860000 CU spreading amplitude loss within the direct arrival or 07870000 CU primary upgoing reflections 07880000 CU 07890000 CU VSPD -- vsp data restructuring and preprocessing 07900000 CU 07910000 CU VSPE -- vsp geometry (see GMDEF - VSPE) 07920000 CU 07930000 CU VSPF -- vsp statics application 07940000 CU 07950000 CU VSPG -- display geophysical parameters from vsp data 07960000 CU 07970000 CU VSPV -- concatenates traces for combined VSP display with VETs 07980000 CU 07990000 CU VSPW -- sum traces with similarity weighting algorithm 08000000 CU 08010000 CU VSUM -- vertical sum (see SUMM - VSUM) 08020000 CUEND 08030000