RE:EVOLUTION IN SEISMIC SEABED SURVEYING

GeoNode

GEONODE – NEXT GEN SEABED STATION

GEONODE — autonomous self-pop-up sea-bottom recorders is developed for work at a depth up to 7000 meters either in brine and fresh water.

COMBINATION OF UNIQUE FEATURES

THREE-DIRECTIONAL GEOPHONE 1
HYDROPHONE 2
SONAR MODEM 3
geonode
4 SEISMIC RECORDER
5 SELF-SOLUBLE ECO-ANCHOR
6 WIRELESS DATA TRANSFER

SEA-BOTTOM RECORDERS GEONODE — THE BEST SOLUTION FOR SEISMIC DATA COLLECTING BY SEARCH OF HYDROCARBONS

GEONODE – OPERATION DESCRIPTION

AUTONOMOUS SELF-POP-UP SEABED RECORDER GEONODE
1
arrangement of stations in the set area
2
«shooting-through» by seismic source point and data recording
3
operated self-pop-up, wireless data reading, preparation of stations for new arrangement

SEA-BOTTOM RECORDERS GEONODE — THE BEST SOLUTION FOR SEISMIC DATA COLLECTING BY SEARCH OF HYDROCARBONS

GEONODE – UNIQUE DEVICE AND COMPETITIVE ADVATAGE

vertical geophone and hydrophone increase survey density and frequency rate when image on multiple water waves is created

RECORD CLEANING IN THE CASE OF RINGING AND TRANSFORMED WAVES

FAST POP-UP AND ARRANGEMENT
Just initial delay depends on depth of sea during arrangement
CLEAR DATA
S waves are not able to travel through water and can't be recorded by towed sensors
3D COMPONENT GEOPHONE AND HYDROPHONE
Seabed structure images in PP and PS waves
geonode
MODULARITY
fast replacement of damaged components provide stability in the case of equipment loss and failure
REMOTE READOUT
high-speed WUSB wireless obtained data copying after pop-up
BROAD BAND DATA
Deep basin image creation


FOUR COMPONENT RECORDING ON THE SEABED
images of basins in one contrast in S waves of resistance and speeds
images through Gas "clouds" where data of P waves is not represented

COMPARISON OF MARINE SEISMIC SURVEY TECHNOLOGIES


Marine survey technologies Multi-azimuth Large distance Areas with obstacles Shooting time Shooting cost
Towed sensors * Narrow azimuth NO Limited No 1 1
Rich azimuth YES YES No 3 4
Seabed cable ** YES Limited Limited 2-3 4-5
Seabed stations Arranged by robots YES YES YES 8 10
GEONODE *** YES YES YES 1.8 0.8
*
specially equipped expensive vessel is required.
Seabed cable operation risk:

  • impossibility of work at the increased waves (weather)
  • High accident risk during the work on shoal
  • Noise of sensor towage
**
Operation – any hard geological conditions, including conditions when sensor towing is impossible
***
GEONODE allows faster, more precisious and cheaper shooting than other marine technologies

COMPARISON OF MARINE SEISMIC SURVEY TECHNOLOGIES

Seabed cables
Seabed stations
NAZ towed sensors
MAZ
Spiral path *
*
Seismic surveys by towed sensors on spiral path along the consecutive, continuously passing each other circular trajectories.

Coil Shooting. New method minimizes or completely excludes a time-out of plying and provides high-quality data on reflections in all range of azimuths.

COMPARISON OF MARINE SEISMIC SURVEY TECHNOLOGIES


SEISMO SHELF
Russia
FairfieldNodal Z700
USA
FairfieldNodal Z3000
USA
Seabird CASE Abyss
Norway
CGGVeritas Trilobit
France
Geospace Technologies OBX
USA
GEONODE
Device type Deployment free falling Connects by cable-rope Deployment by robots Deployment by robots Deployment by robots Connects by cable-rope Deployment free falling
Permissible depth 0 – 500 metres 0 – 700 metres 0 – 3000 metres 0 – 3000 metres 0 – 3000 metres 0 – 3450 metres 0 – 7000 metres
Loaded weight of one device 32,5 kg 30 kg 97 kg 150 kg 59 kg 15,9 kg 23 kg
Autonomous work time 30 days 15 days 60 days 60 days 75 days 30 days 90 days
Vessel requirements Any Adaptation required Adaptation required Special Special Special Any
Turn over to the vessel laboratory After deployment and recover After deployment and recover After deployment and recover After deployment and recover After deployment and recover After deployment and recover Free mode
Copying of obtained data Wired Wired Wired Wired Wired Wired Wireless
Data quality Full azimuth 4 components Full azimuth 4 components Full azimuth 4 components Tight azimuth 1 component Tight azimuth 1 component Tight azimuth 1 component Full azimuth 4 components
Productivity (square km per 24 hours) 5 sq.km 2 sq.km 1.2 sq.km 1.2 sq.km 1.2 sq.km 2 sq.km 10 sq.km
Device location on the sea surface No No No No No No Radio beacon with GPS, flag and lamp for day and night detection
Time synchronization External GPS receiver for manual connection with device after opening of the case External GPS receiver for manual connection with device External GPS receiver for manual connection with device External GPS receiver for manual connection with device External GPS receiver for manual connection with device External GPS receiver for manual connection with device Integrated receiver GPS/GLONASS automatically carries out synchronization
Data backup on the vessel No No No No No No Yes
Advatage No Relatively dense inline selection in comparison with other seabed systems Working in deep water – up to 3000 m. One vessel required. Working in deep water – up to 3000 m. One vessel required. Working in deep water – up to 3000 m. One vessel required. Relatively dense inline selection in comparison with other seabed systems Universal arrangement: line, cross. Free fall system and self-pop-up. Fast arrangement, pulling up and rearrangement
Disatvantage Case should be opened for data copying after pulling up Two vessels are necessary for work. Manual recharge – 8 hours. Robots are necessary for deployment. It is big and heavy equipment. Small number of devices in the line of arrangement. Battery recharge takes 30 hours Robots are necessary for deployment. It is big and heavy equipment. Small number of devices in the line of arrangement. Robots are necessary for deployment. It is big and heavy equipment. Small number of devices in the line of arrangement. Partially manual arrangement. Additional noise because of rope. Disatvantages found in competitive devices are not revealed

GEONODE – NEXT GEN SEABED STATION

high precision registration of seismic wave direction — images of the target horizons in P/PS waves
work in any weather conditions. GEONODE doesn't remove noise from a sea surface as stations aren't wired with a surface.
the new standard exceeding existing technologies — azimuthal 3D/4C survey
the ecological anchor —– Water soluable after shooting
fidelity — horizontal component allowing to obtain exact
geonode
low energy consumption — a long life at the bottom without replacement/recharge of batteries
immersion range of GEONODE station: 0 - 7000 meters Full contact of each station with a bottom of any water area
3D seismic survey in the Arctic — conditions of ice navigation
Rich azimuth shooting of the target horizons (remote source-receiver) from all directions. Unlimited aperture. Choice* is carried out in accordance with geological task
absence of risks and restrictions at shall depths, water areas with obstacles and intensive fishing activity, transit zones, including with the tidal effect
* Patents: marine areal seismic survey method (No. 0091134), self-soluble bottom anchor (No. 2509066 )