The total solution for UHR seismic
The wide range of
UHR Seismic Applications
Our UHR seismic services find their application in a wide range of activities, which require all a detailed knowledge of the sub bottom structures and seismic stratigraphy:
- Drill site surveys, pipeline / cable route surveys
- Offshore engineering projects / tunnels / bridges
- Wind farms foundation studies
- Dredging for coastal, river and harbor projects
- Sand searches / sand supply projects
- Horizontal drilling projects
- Scientific seismic research projects
- Hydrocarbon exploration
- Shallow gas hazard detection
- Offshore mining projects
Multi Channel UHR Seismic Acquisition
Our UHR multi-channel seismic services are often used for the detection of gas pockets in site surveys, but also to investigate shallow sub-bottom structures for large-scale offshore engineering projects such as tunnels, bridges and wind farms.
Various end-users have selected our equipment as the best currently available in the industry. In response we continue to develop new methods to satisfy their demands.
Available from the shelf…
We keep on stock a comprehensive range of multi-channel streamers, with different geometries, in order to provide the best solution for the prevailing water depth, penetration and required target resolution.
- Geo-Sense 24-channel with 24 x 3.125 m groups, total length 100 m
- Geo-Sense 48-channel with 48 x 3.125 m groups, total length 100 m
- Geo-Sense 48-channel with 48 x 1.0 m groups, total length 75 m
- Geo-Sense 48-channel with 24 x 1.0 m plus 24 x 2.0 m groups, total 100 m
The Geo-Sense Streamers plus the Multi-Trace Recorder (continuous recording with 24 bit resolution at 10 kHz sample rate) allow you to capture the full spectrum data needed for advanced, state-of-the-art processing. The Multi-Trace software comprises also all features for efficient quality control.
We have been acquiring and processing successfully data in 1.5 m (one and half meter) water depth………….. and in 6000 m water depth…......
Rental Pool
The 10 ft containerized spread is ideal for quick mobilization on a large (supply) vessel. Very often the slots for fixing a 20 - 10 ft container are already available on the back deck.
The 6-16 kJ spread typically composed of a Geo-Spark 6-16 kJ Pulsed Power Supply, a Geo-Source 800 tip or 1600 tip sparker, our Multi-Trace data acquisition system plus an UHR Geo-Sense streamer, of 24-48-96 channels. Obviously, you can also use our Geo-Sense single channel streamer with the Mini-Trace II acquisition unit.
Please note the 8 ft containerized version is just one grade smaller and has the advantage that it can easily be air freighted.
Portable 2-7 kJ Geo-Spark spread
This spread is based on our latest 2000 XF pulsed power supply, which can be expanded to 7 kJ by adding the extra 5 kJ capacitor unit.
The 2000 XF is typically combined with the lightweight Geo-Source 200 sparker, the Geo-Source 400 tip or the Geo-Source 800 tip.
The selection of the source (max energy – shooting rate) is mainly depending on the water depth, the required penetration, lateral and horizontal resolution. Practical considerations such as vessel size and means for deployment often decide which source is most suitable.
- 2000 XF plus Geo-Source 200 LW for small vessel (<20 m) operations
- 2000 XF plus Geo-Source 200-400 for medium vessel operations
- 2000 XF + 5 kJ plus Geo-Source 800 for larger vessel operations
A portable 2 kJ spread is normally shipped in 3 Euro pallet boxes and has a total weight of 750 kg.
The 2000 XF with 5 kJ extension is also available as containerized spread.
Portable 1 kJ Geo-Spark spread
The 1 kJ spread is using the Geo-Spark 1000 pulsed power supply, the first HV PPS developed by GMSS. It is typically combined with the Geo-Source 200 LW for small vessels or the Geo-Source 200 standard designed for larger vessels and rough working conditions.
Technical Support
Our rental services also provide quick online technical support, either via email: support@geosys.nl, or via Skype / telephone.
We also provide training sessions for our software packages via Skype.
Equipment Rental & Operator
Services
The synergy created by the combination of technical support, manufacturing and system rental makes Geo Marine Survey Systems a unique partner for all your UHR seismic projects.
Together with GeoSurveys, our partner from Portugal, we can provide the complete seismic package including advanced UHR processing, interpretation and final reporting services.
All our geophysical operators - processing geophysicists are company trained and know the equipment inside out. We can assist you in every phase of the project…….
- Mobilization
- UHR seismic acquisition and online QC
- UHR seismic processing
- Interpretation and Reporting
The skills of our geophysical operators are not limited to UHR seismic alone... Through our experience on numerous projects worldwide, we can also assist you in all standard survey techniques:
- Sub-bottom profiling
- Side scan sonar seafloor imaging and mosaicking
- Multi/single beam echo sounding
- Magnetometer surveys
Seismic Processing & Reporting
Services
Complete seismic processing and reporting services can be provided through the experts of GeoSurveys who have an outstanding know-how and experience in the elaboration of all UHR seismic data and associated data.
Making use of various software packages for onboard QC and data processing, we can provide full reporting and interpretation services on the job or from our offices.
Our services also include the typical site survey data:
- Processing and interpretation of bathymetric data
- Interpretation of Side Scan Sonar data, from manual to digital mosaicking
- Processing and interpretation of Magnetometric and Gravimetric data
- Analysis of Geotechnical data
- Seismic data processing, from single channel to advanced multi channel
- Seismic data interpretation, from 2D to full 3D
Client Rep Services
Client Rep and QC services rely on very experienced senior personnel, who have an independent view on the data acquisition process and on the data quality in the perspective of continued processing.
Several tests and checks are conducted to ensure that the acquired data sets are complete, comply with their format description and are of good quality, ready for final processing.
After the Client's representative having reviewed the (pre-processed) raw data, a short acceptance report will be written and signed by the offshore representative for line acceptance.
The entire QC process is conducted in accordance with the specifications as agreed to in the contract. As such, the contractor can be sure to deliver data up to their standards, and the Client has the means to check the results.
Based on the results, it can be agreed on board to change acquisition settings in order to achieve better results.
Project Management
Project Management Assistance is more than just an integrated service. These assignments usually evolve from a long-standing co-operation with a Client of preference and require a solid mutual confidence in the respective professional capabilities.
Typical tasks range from:
- Commercial/technical project analysis
- Tender preparation
- Vessel contracting
- Supplying equipment
- Onboard QC
- Final processing
- Interpretation and report generation
Training
Professional training in data processing and data interpretation is available through the experts of GeoSurveys.