Delph v29 2 - DELPH Seismic

DELPH Seismic
General Presentation
V2.9
Spring 2012

2
Introduction

 DELPH Seismic is a complete Acquisition,
Processing and Interpretation tool designed
to perform easily accurate and productive
surveys using shallow seismic systems and
sub-bottom profilers.

 DELPH Seismic does:
 Ensure quality data management
 Improve the interpretation workflow
 Eliminate bottlenecks during the processing
and interpretation

 Using these components with a unique global
viewer concept and powerful geographic
tools, the necessary time to complete a
mission report is drastically reduced.

http://delph.ixsea.com

3
DELPH Seismic Components

 DELPH Seismic includes all necessary
components to perform high-resolution
seismic and sub-bottom surveys:
 Turnkey Solutions
Including DELPH Acquisition Workstation,
iXBlue ECHOES or Third-Party SBPs
 DELPH Seismic Acquisition
Easy and High Quality Data Logger
 DELPH Seismic Interpretation
Data Processing and Geo-Interpretation
 DELPH Seismic Geo Tools
Build GeoSections and Horizon Surfaces
 DELPH Seismic Real-Time
Real-Time Processing, Interpretation and
GeoSections


4
Workflow


5
Architecture

 Acquisition of analog and digital  Processing  Interpretation
Seismic Systems & Sub-Bottom • Full Processing • Global viewer display
Profilers • Multiple Removal • Cross profiles browsing
• System monitoring • Swell Filter • Horizon Picking
• Waterfall display • Tide Compensation  Horizon tracking
• Full raw data logging (XTF / SEG-Y)  Horizon and Thickness export
 Geographic Tools
• 3D interpretation QC and display
• Vertical Fence Diagrams : GeoSections
• Horizon Surfaces display : Seismic DTMs
• Geographic interpretation with other sensor data (side-scan sonar,
bathymetry, magnetometer)


6
DELPH Seismic Acquisition


7
DELPH Seismic Acquisition - Features

 Compatible with all analog and most
digital sub-bottom profilers
 iXBlue ECHOES (1K5, 3K5, 5K, 10K)
 Sparkers, Boomers, AirGuns, …
 Edgetech FSSB, Benthos Chirp III
 Multi-Channel Acquisition
 Multiple Synchronous Channels
 Two Asynchronous Channels
 Real-time « waterfall », signal and
frequency spectrum display
 Automatic Contrast Enhancement
 High Pass and Low Pass Filters
 Data logging (XTF or SEG-Y format)
 Quality Control with Status Indicators

 Windows XP - Vista(1) - 7(1)

(1) Analog acquisition runs on Windows XP


8
DELPH Seismic Interpretation


9


10
DELPH Seismic Interpretation - Features
 Full report preparation tool
 Profile processing, edition
and interpretation
 Geographic Visualization
 Interpretation
 Horizon Surfaces
 GeoSections
 Other sensors

 Based on industry standards
 XTF and SEGY
 ShapeFile, KML
 GeoTiff
 TXT, CSV
 HTML, XML
 Bitmap, Tiff

 Windows XP - Vista - 7


11
Display

Display Global viewer Cross profile navigation Intuitive navigation tools

Processing DELPH Interpretation offers an innovative way of accessing and visualizing seismic data,
thus boosting the workflow from processing to interpretation and reporting.

Interpretation

Printing

Interoperability

DTM generation

GeoSections


12
On-Screen display of arbitrary length lines

Display  DELPH Seismic Interpretation is Time scale


Global viewer
Cross profile navigation
based on a fast proprietary
 Intuitive navigation tools indexing and caching mechanism
that allows to process and display
large datasets while preserving
Processing
computer resources.

Interpretation
 DELPH Seismic Interpretation can
display arbitrary length seismic /
Printing sub-bottom profiler lines.

Interoperability  Like unrolling paper to directly
access to features of interest, or
Along track
DTM generation interpreting large scale structures, scale
DELPH Seismic provides a direct
access to sub-bottom records
GeoSections [ Get rid of scrolling forward – backward like with
old tapes and benefit of a direct access …]


13
Cross profile navigation and multiple windows display

Display  DELPH Seismic Interpretation
 Global viewer can display several lines
simultaneously on one or

 Intuitive navigation tools
multiple screens.
Processing
 Crossing profiles locations are
displayed and each crossing
Interpretation
profile name is available.

Printing
 The vertical position of digitized [ Interpretation and vertical correction QC
layers in the crossing profiles is made easy …]
Interoperability displayed along with the reflector
name and corresponding travel
DTM generation time.

GeoSections  The crossing line can be opened
in a new window by clicking on
the graphical symbol


14
Intuitive navigation tools

Display  Intuitively
analyze the data
 Global viewer using mouse and keyboard
keys:

 Intuitive navigation tools

• Zoom to the complete profile
or a particular area
Processing
• Zoom in and out to the data
• Pan, scroll
Interpretation
• Adjust vertical and horizontal
scales
Printing

 The display is separated from
Interoperability
the processing

DTM generation
 Saving time on data access
drastically improves the QC and
GeoSections interpretation steps


15
Processing

Display

Processing Chirp processing Filtering Gain control Multiple removal Spatial processing Parallel processing

Interpretation Processing seismic data is necessary prior to perform the interpretation.

DELPH Seismic first class processing helps you to get the best from your sub-bottom data
Printing

Interoperability

DTM generation

GeoSections


16
Chirp processing

Display  When the shape of the signal
emitted in the water is known
DELPH Seismic allows you to
Processing apply chirp processing
 Chirp processing
 Filtering
 Gain control  Chirpprocessing can be used to


Multiple removal
Spatial processing obtain:
 Real and imaginary part of the
signal
Interpretation  Envelop or phase of the signal

Printing  The “signature deconvolution”
processing attenuates the ringing
of monochromatic seismic
Interoperability sources like sparkers or boomers.
It improves the vertical resolution
DTM generation of the seismic data.

GeoSections


17
Filtering

Display  Low frequency components of the raw signal must be removed to
obtain usable data
 DELPH Seismic allows you to perform High Pass and Low Pass
frequency filtering to improve your data
Processing

 The Time Varying Filter (TVF) is specially designed to dissociate
 Filtering
 Gain control
 Multiple removal
Spatial processing
noises in the water-column and in sediments (ex: remove lower
frequencies in shorter ranges and higher frequencies in far ranges).


Interpretation

Printing

Interoperability

Filtering OFF Filtering ON
DTM generation

GeoSections


18
Gain control

Display  The contrast and intensity of the data can be controlled directly using
a linear Time Varying Gain control or adaptive gain controls (AGC)
Processing  AGC automatically adjusts the energy to an average value all along


Chirp processing
Filtering
the trace, compensating the attenuation in time. Four different rules
 Gain control are available : decremental, linear, exponential and power.
 Spatial processing

Gain OFF
Interpretation

Printing

Interoperability Gain ON

DTM generation

GeoSections


19
Multiple removal

Display  Using the signature of the signal extracted near the bottom DELPH Seismic
Interpretation performs correlation and deconvolution processing to attenuate the
acoustic multiples.
Processing
 Chirp processing  The first multiple position can be displayed for each layer during the interpretation.
 This powerful processing tool helps you to distinguish the actual geological
 Filtering
 Gain control


Multiple removal
Spatial processing
interfaces from the signal multiples.

Interpretation

Printing
Multiple Removal OFF Multiple Display ON

Interoperability

DTM generation

GeoSections
Multiple Removal ON


20
Spatial processing – Horizontal Stacking

Display  DELPH Seismic Horizontal Stacking processing reduce the noise level by
averaging a ping with its neighborhood.

Processing


Chirp processing
Filtering
Stacking OFF
 Gain control

Interpretation

Printing
Stacking ON
Interoperability

DTM generation

GeoSections


21
Spatial processing – Heave Correction & Swell Filtering

Display  When a heave sensor data has been logged, it can be used to correct the
profile from the swell effect
 The Swell Filter can be applied using the tracked bottom and the swell period
Processing
 Filtering
 Gain control Swell OFF

Interpretation

Printing

Interoperability Swell ON

DTM generation

GeoSections


22
Spatial processing – Tide Compensation & Static Correction

Display  Tidal variations can be compensated based on a tide log file and/or user input.
 Static vertical correction from control points (ping/elevation) is also available
when no tide data is available or for finely tuning the matching of crossing
Processing
 Chirp processing lines. The offset between the picked seabed on crossing lines can be
 Filtering automatically used.
 Gain control

Interpretation

Printing

Interoperability

DTM generation

GeoSections


23
Spatial processing – Topographic Correction

Display  TopoCorrection vertically adjusts the profile based on the sensor immersion
data when a pressure sensor is available.

Processing
 Filtering Topo OFF
 Gain control

Interpretation

Printing

Interoperability Topo ON

DTM generation

GeoSections


24
Interpretation

Display

Processing

Interpretation Bottom and reflector tracking Across and Along Track Area Exclusion Measurement tool

Annotation and Drawing Tools
Printing

Interoperability
In DELPH Seismic, sub-bottom data interpretation benefits of productive digitizing
DTM generation methods and rich 2D and 3D geographic QC tools.

GeoSections


25
Bottom and reflector tracking

Display
 DELPH Seismic provides intuitive tools to digitize the seabed and geological
interfaces
Processing
 Reflector definitions are stored in a database and shared between all profiles
 DELPH Seismic Interpretation provides an automatic tracking tool that
Interpretation decreases significantly the digitizing workload
 Bottom and reflector
tracking
 Across and Along Track
Area Exclusion
 Measurement tool
 Annotation and Drawing
Tools

Printing

Example:
Interoperability 4km boomer data
Automatic seabed
DTM generation tracking in 6 sec.
Instant swell filtering
GeoSections


26
Across and along track area exclusion

Display
 Parts of the sub-bottom data
are sometimes of poor quality
Processing
 Recording of surface noise
 Direct surface reflections
Interpretation  Excessive recording length
 Bottom and reflector compared to acoustic
tracking
 Across and Along Track penetration
Area Exclusion  Acquisition or navigation
 Annotation and Drawing problem
Tools
 Recording during ship turns
 …
Printing
 The excluded data can be
Interoperability removed from the printing, DTM
generation and GeoSections :
 Exclusion areas are define on
DTM generation
the profile in a few clicks

GeoSections


27
Measurement tool

Display  Use the measurement tool to
obtain length of objects on the
Processing screen
 Distance
 Delta-time
Interpretation
 Bottom and reflector
 Slope
tracking  Thickness
 Across and Along Track
Area Exclusion
Tools

Printing

Interoperability

DTM generation

GeoSections


28
Annotation and drawing tools

Display  Annotate the sub-bottom profile
directly from DELPH Seismic
Processing Interpretation using:
 Segments, poly-lines and arrows
 Polygons for contouring areas
Interpretation
 Bottom and reflector  Rectangles, Ellipses and Pictures
tracking
 Across and Along Track  Text with adjustable font and style
Area Exclusion
Tools  Speed up the reporting process
 Chose different colors and line
Printing shapes for different objects
 Filling and transparency improve
the contouring while keeping and
Interoperability eye on data

DTM generation

GeoSections


29
Print on any Windows printer

Display  DELPH Seismic Interpretation
can print on any Windows
compatible printer up to A0
Processing
paper size

Interpretation
 The print layout is completely
configurable, including paper
Printing size and orientation, title, logo,
…
Interoperability
A preview helps you to adjust the
DTM generation layout before printing

GeoSections  Print
using a PDF Driver to
complete your reporting


30
Interoperability – Profile image output

Display  DELPH Seismic allows you to export data as a picture in TIF format. This functionality is
fully customizable (scale, orientation…)
Processing
 Snapshots of the current display can also be created with an optional magnification factor
for hi resolution outputs.
Interpretation

Printing

Interoperability

DTM generation

GeoSections

TIFF profile output JPEG Snapshot output


31
Interoperability – Interpretation reporting

Display  DELPH exports the interpreted reflectors to CSV formatted text files at a desired
resolution
• Multiple files and horizons can be exported at once
Processing
• Reflector time can be relative to the start of acquisition (depth), to the seabed
(burial) or to another layer (thickness)
Interpretation • A sound velocity and measurement unit can be specified for exporting
thicknesses
Printing • The report includes the date & time and position in a selected projection system

Interoperability

DTM generation

GeoSections


32
DELPH Seismic Interpretation - GeoTools


33
DTM Generation of horizon surfaces

Display  DTMs can be produced from digitized reflectors with just a few
clicks
 Results are displayed in DELPH RoadMap
Processing
 Synchronized cursor with the interpretation
 Display with other kinds of sensor data
Interpretation  DTMs are stored in geoTIFF file format and can be loaded in
third party GIS software
Printing

Interoperability

DTM generation

GeoSections


34
Seismic GeoSections

Display  Create vertical sections from the seismic profiles and get a complete view of the
survey field
Processing  Correlate the acquired profiles in Real-Time
 Use designed exclusion areas to remove the water column and far range

Interpretation  Match the interpretation against other kinds of sensor data

Printing

Interoperability

DTM generation

GeoSections


Delph v29 2 - DELPH Seismic

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