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| GEOPIC:
Geodata Processing And Interpretation Center |
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Introduction |
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Seismic Data Processing |
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Seismic & Log Data Interpretation |
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Seismic Software Development |
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Contact |
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| Introduction |
The Geodata Processing and Interpretation Centre (GEOPIC)
located at Dehra Dun was established in 1987. It is ONGC's
largest computing facility and one of the few centres
around the world where integrated processing and interpretation
of different geo-scientific data from seismic to petro-physical,
geological and reservoir engineering are carried out.
Over 60 per cent of the seismic data acquired by ONGC
is processed at GEOPIC, which includes all the 3-D seismic
data acquired so far over 69 prospects/fields. About 68
billion bits of data are processed here every day. |
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These 3-D data are interpreted synergetically to unravel the
structural and stratigraphic complexities of the sub-surface
in search for hydrocarbons. Over the years, 65 3-D prospects
have been interpreted.
Interpretation capabilities of GEOPIC can be assessed from
its success rate of 54 per cent for the exploratory locations
proposed by the Institute, in contrast to the global average
of 25 per cent. These capabilities have fetched processing
and interpretation contracts both for Indian and Foreign basins.
GEOPIC is a member of 'Consortium of Research on Elastic Wave
Exploration Seismology (CREWES)', University of Calgary,
Canada; SRB Project, University of Stanford and International
Association of Geophysical Contractors. It is also the
coordinating agency for introducing Multi-component technology
in ONGC.
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| Seismic
Data Processing |
GEOPIC is the largest 2D and 3D seismic data processing centre
in India, with a proven capacity for processing over 75,000
line kilometer of seismic data annually.
The explorations goals are achieved by high quality of 3D processing,
customized reprocessing tuned to meet interpretation objectives,
optimal utilization of resources and special processing and
creative techniques.
The services offered are:
High
resolution 2D, 3D & 4D seismic data processing
Amplitude
variation with offset (AVO)
Seismic
inversion
Prestack
time and depth migration
Velocity
depth modeling
VSP
data processing
Seismolithological
modeling
Subsurface
imaging in geologically complex setting
The facilities available are:
Hardware
Origin 2000 server; 20 CPU's ; 512 MB/CPU RAM, 1080 GB Hard
Disk
IBM 3083 Jx3 computer system
Robotic tape library
11 processing workstations
4 Inversion/Interpretation workstations
4 Inversion/Interpretation client nodes
3 Archival workstations
60 X-stations 3590, 3490B, 3480 cartridge drives, DLT drive,
9-track round cape drives B&W and
colour laser
printers, scanners, digitizers
Software
WGC processing software
Promax processing software
Time domain processing - FOCUS 2D & 3D
Inversion - Geodepth products - Power (2D and 3D); Earth model,
Geosec (2D and 3D) Probe
Interpretation - Seisx, Voxelgeo, Geolog and Welltie
Reservoir modelling - IRAP RMS, IRAP Mapping, STORM and Voxelgeo
Powerful velocity model building
Amplitude and AVO inversion
Major jobs completed are:
Volume
of data processed:
2,30,000 LKM of 2D data onland and offshore
54,000 LKM of 3D data onland and 31,000 LKM of 3D data offshore
Processed data for:
Sixty nine 3D projects
Hilly terrain, deserts, offshore, land marine ties and deep
waters
Vietnam offshore for British Petroleum
Western India onland for Selan Exploration
Basins in Iraq and Kazakhstan
Western India offshore for Essar Oil Ltd.
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| Seismic
And Log Data Interpretation |
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Computer aided interpretation is the mainstay of 3D seismic
interpretation as the amount of data used is voluminous. Interactive
interpretation techniques on workstations are being used in
GEOPIC for all geoscientific data.
The services offered are:
IIWS
based interpretation of 2D, 3D data
Structural
mapping
Integrating
seismic attributes with wireline, core and reservoir data
for reservoir characterisation
Seismic
modeling
3D
visualisation and animation
Palinspastic
restoration
AVO
analysis
Formulation
of geological models for exploration and development
Reservoir
characterization
The facilities available are:
Hardware
SUN workstations
Silicon graphic workstations
Micro VAX workstations
Digitizers
Scanners
Colour and B/W plotters
Software
Landmark software on SUN workstations and Geoquest-Schlumberger
software on SUN / Silicon
Graphics workstations for the following interpretative activities:
Structural interpretation
Stratigraphic interpretation
Attribute analysis
Seismic modeling
Wireline log evaluation
Petrophysical interpretation
Reservoir characterisation
3D animation and visualisation
Palinspastic restoration
Major projects completed are:
Projects
Interpreted
Sixty five 3D projects
Twenty seven 2D projects
Review of nineteen 3D projects based on drilling results
Interpretation
of:
Vietnam offshore 2D data for British Petroleum
3D data for Selan Exploration
2D data from basins of Egypt, Iraq and Kazakhstan
3D data for limits of carbonate reservoir and average porosity
distribution
Generation
of depth structure map from time structure map using layer
stripping method
Instantaneous
frequency attributes to pick up the paleochannel
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| Seismic
Software Development |
Options in the programmes of standard processing software are
optimized, modified and generated to meet the requirement of
processing groups in solving the data dependent problems. New
techniques are also inducted both for processing and interpretation.
The services offered are:
The following software packages have been developed and offered
for sale/use:
3D
Dip and Azimuth Transformation Software (DATS)
Design
of shot-receiver layouts for 3D data acquisition through simulation
ofcoverage
Post
stack 3D cross line statics estimation and application
PC/Workstation
based software under UNIX and Windows environment for processing
seismic data
in the field for QC
The facilities available are:
Rolta
6000/300 Workstation
All
the other hardware/software available for processing and interpretation
are also being used for
seismic software development |
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| Contact |
Geodata Processing and Interpretation Centre (GEOPIC)
Oil and Natural Gas Corporation Limited,
KDMIPE Campus,
9 Kaulagarh Road,
Dehra Dun 248 195,
Uttaranchal, India
Tel.: 91-135-757101-5
Fax: 91-135-750286
Email: geopic@nde.vsnl.net.in
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