MARINE SEISMIC

Energy sources MultiJack

    • High charge rate
    • Flip-flop, simultaneous source, code sequences and multilevel sources support
    • High power
    • Easy handling

    MultiJack energy source is designed to supply operations of sparker and boomer sound sources that are typically used for high resolution (HR), ultra-high-resolution (UHR) marine seismic surveys and VSP.

    MultiJack is a unique energy source with the fastest charging rate available on the market, which results in possibility to acquire marine seismic profiles with the highest possible trace density and lateral resolution, correspondingly.

    In addition to the standard mode of operation with a single source, MultiJack energy sources can be combined in an array to implement the latest shooting technologies: 

    • Flip-flop mode
    • Multi-level source
    • Simultaneous source
    • Coded shooting

    Flip-flop shooting became an industry standard acquisition technique for 3D oil and gas surveys, while still seldom used in shallow seismic projects. Our MultiJack sources support flip-flop shooting mode to improve efficiency and ready to serve seismic parties, who are on the leading edge of marine engineering seismic acquisitions.

    The use of multilevel sources allows to achieve a pre-defined source directivity, with modifying the source signature shape and its spectral characteristics. The application of multilevel sources in conjunction with impulse-code sequences makes it possible to use a ghost wave as a source of useful signal.


    The use of code sequences also makes it possible to work with amplitudes of generated signals that are much smaller than the source signals amplitudes in a standard seismic survey with a single generation of the signal at each shot point. At the same time, the total energy of the recorded signal is preserved without loss in data quality.


    Simultaneous source (or multi-shooting) technology allows to achieve a number of significant advantages comparing to single source acquisition:

    Increase in the detail of research by using several nearby sources

    The possibility to determine kinematic and dynamic characteristics of geological medium at depths exceeding the length of recording system

    The transition from swathe shooting geometry to in-line shooting geometry due to source separation on either side of the recording system

    The transition from swathe shooting geometry to in-line shooting geometry due to source separation on either side of the recording system

    The acquisition of seismic data over a wide range of azimuths due to non-longitudinal towing scheme of several sources

    The acquisition of seismic data over a wide range of azimuths due to non-longitudinal towing scheme of several sources

    An important feature of MultiJack system while working in an array is its exceptional simplicity — all units are controlled by a single MultiJackPad remote control, which allows to set up and monitor all valuable parameters remotely. This is a unique solution on the market, which allows completely separate high voltage blocks from instrument room equipment. Acquisition with MultiJackPad is safer than ever.

    MultiJack energy sources are balanced by the maximum pulse energy and charge rate so that it is guaranteed to provide standard observation steps at a typical vessel speed of 3–5 knots.

    The standard set of MultiJack energy source consists of:

    • MultiJack Unit
    • Sync connector (2 pc.)
    • Power cable
    • Universal switching module for connecting the source
    • Documentation Kit

    In addition to MultiJack energy sources the following items can be purchased:

    Additionally, deck winches for HV cable and streamer with slip ring can be purchased to provide fast and safe deployment and recovery of UHR marine equipment during field operations.

    Geodevice team is ready for cooperation and developing customized equipment for special customer’s needs and ideas.

    Please, contact us for generating the most suitable high resolution marine acquisition setup for your purposes. We will consider all the requirements and provide you with the best solution to achieve high quality image, starting from acquisition up to final data delivery.

    We provide trainings, technical support and consultancy services, as well as processing of high-resolution marine seismic surveys.

    MultiJack model500HP1.51250HP1.52500HP3.05000HP6.012500HP6.025000HP1250000HP12
    Maximum pulse voltage4 kV (6 kV (option))
    Type of chargerpulse charger
    Trigger mode  external/repetitive/manual
    Support of survey technologiesconventional, Flip-flop, simultaneous source, coded and multi-level source
    Operating energy50‑500 J50‑1 250 J300‑2 500 J300‑5 000 J300‑12 500 J300‑25 000 J300‑50 000 J
    Charging rate  500-1 500 J/s500-1 500 J/s500-3 000 J/s6 000 J/s6 000 J/s6 000-12 000 J/s6 000-12 000 J/s
    Minimum period of operation at the minimum pulse energy   0.13 s0.13 s0.26 s0.15 s0.15 s0.1 s0.1 s
    Minimum period of operation at the maximum pulse energy0.4 s0.9 s0.9 s0.9 s2.1 s2.1 s4.2 s
    Minimum distance between shot points on maximum pulse energy and vessel speed is 3-5 knots0.6-1 m1.4-2.3 m1.4-2.3 m1.4-2.3 m3.3-5.5 m3.3-5.5 m6.5-10.8 m
    Power mains110 or 220 V, 50 Hz380 V, 50 Hz
    Maximum power consumption1/2/3 kW1/2/3/4/5/6 kW12 kW24 kW
    Overall dimensions54×41×27 cm    58×56×50 cm        58×59×69 cm    58×59×120 cm2 or 4 units 58×59×120 cm each
    Weight20 kg30 kg74 kg99 kg130 kg2×130 kg4×130 kg
    MultiJackPad
    Purpose of useremote control of MultiJack
    Maximum length of communication line     100 m
    Overall dimensions24 × 19.8 × 10.9 cm
    Weight1.5 kg


    The manufacturer reserves the right to make changes in the design of devices that do not significantly alter the functional characteristics of the product.

    RadExPro

    ZondST2d — 2D seismic data processing and interpretation software

    ZondST3d — 3D seismotomography interpretation (refracted waves)

    Electrodynamic source G-Boomer

    • UHR seismic source
    • Vertical resolution up to 10 cm
    • Applicable for fresh water and marine environments
    • Stable and repeatable broadband signature
    • Easy infield operations

    G-Boomer with MultiJack energy source is an ultra-high resolution marine acquisition setup, which is typically used for detailed stratigraphic studies and geological mapping in relatively shallow depths.

    G-Boomer is an easy-to-operate marine seismic source with stable broadband wavelet shape up to 5 kHz, providing vertical resolution up to 10 cm. It is applicable for operations in both fresh and salt waters. To provide deeper penetration several boomer plates can be combined on single frame. 2G and 4G boomers with 2 and 4 plates correspondingly are available for purchase for the deeper subsurface imaging with highest possible vertical resolution.

    Geodevice team is ready for cooperation and developing customized equipment for special customer’s needs and ideas. We have an experience of manufacturing modified version of G-Boomer source with significantly increased central frequency (up to 4 kHz) by the client’s request.

    Full acquisition setup includes towed HV power coaxial cable, MultiJack energy source, towed hydrophone array HRStreamer and seismograph. Additionally, deck winches for HV cable and streamer with slip ring can be purchased to provide fast and safe deployment and recovery of UHR marine equipment during field operations.

    Please, contact us for generating the most suitable high resolution marine acquisition setup for your purposes. We will consider all the requirements and provide you with the best solution to achieve high quality image, starting from acquisition up to final data delivery.

    We provide trainings, technical support and consultancy services, as well as processing of high-resolution marine seismic surveys.   

    Data examples:

    G-Boomer HF source, MultiJack-500HP1.5 energy source:

    G-Boomer2G-Boomer4G-BoomerG-Boomer HF
    Plates1241
    Maximum pulse energy300 J600 J1 200 J300 J
    Recommended pulse energy50 ÷ 250 J100 ÷ 500 J200 ÷ 1 000 J50 ÷ 250 J
    Maximum input power600 J/s1 200 J/s2 400 J/s600 J/s
    Sound pressure level relative to1 μPa at a distance of 1 m215 dB at 250 J220 dB at 500 J225 dB at 1000 J215 dB at 250 J
    Pulse spatial length*0.75 ÷ 1.5 ms0.2 ÷ 0.4 ms
    Frequency range*100 ÷ 6 000 Hz100 ÷ 10 000 Hz
    Recommended MultiJack500HP1.5500HP1.52500HP3.0500HP1.5
    Recommended coaxial HV cable1×101×201×501×10
    Plate size380×380×100 mm
    Weight in air15 kg
    Catamaranstainless steel

    *depends on shot energy

    RadExPro

    ZondST2d — 2D seismic data processing and interpretation software

    ZondST3d — 3D seismotomography interpretation (refracted waves)

    Freshwater sparkers FWS

    • High repeatable broadband signal
    • Suitable for any type of HR/UHR surveys
    • Replaceable electrode groups
    • Adjustable depth
    • Stainless steel frame

    Fresh water sparkers are developed for seismic reflection surveys in freshwater bodies (such as lakes and rivers) or waters with insufficient salinity.

    Physical principle of sparker operation requires saltwater envinronment to perform electrical discharge and generate acoustic signal.

    To operate in fresh water environmet additional salt water circulation system is required. Electrodes are covered with special hoses, connected with a salt water container. Closed circuit is performed by pumping water through the system. Circulation also removes gases generating during the shooting from the hoses

    All FWS sources in our line range support industry standard 2D and 3D acquisition techniques and ensure succesfull long-term in-field operations due to:

    • Broadband signal with exceptional repeatability
    • Optimal towing depth with it’s easy adjustment if required
    • Non-wearing electrodes due to negative discharge technology of MultiJack Energy Source
    • Specific tip arrangement for optimal signal generation
    • GPS installment tool for high-precision positioning

    Review some of our most popular modifications:

    FWS-125
    Is the most compact and light weight sparker in our list. In combimation with MultiJack-1250 it forms a portable setup for shallow engineering purposes with penetration depth up to 50 m and vertical resoltuion up to 10 cm. FWS-125 is often used for small objects detection in soft sediments, bedrock mapping for various construction purposes, sands searches.

    Key features:

    • Compact and light weight
    • Vertical resolution up to 10 cm
    • Operational depths: 1 – 500 m
    • Penetration up to 50 m
    • Shot point interval: 0.6 – 1 s
    • Ideally suits for small-scale operations

    Lake, FWS-125 source, MultiJack-500HP1.5 energy source :

    FWS-250
    Simplicity and functionality of FWS-250 made it one of the most used sparker sources on the market. FWS-250 has 4 groups of electrodes and 252 tips in total with maximum working energy of 2500J.

    More powerfull, it can be applied on wider water depth range and projects, required deeper penetration. Among the possible applications are engineering applications, geohazard assessment, stratigraphy studies, natural resources searches and many others.

    Key features:

    • Wide range of applications
    • Operational depths: 1- 2500 m
    • Vertical resolution up to 10 cm
    • Penetration up to 500 m below the seafloor
    • Shot point interval: 0.6 – 1 s

    Lake, FWS-250 source, MultiJack-2500HP3.0 energy source :

    Lake, FWS-100 source, MultiJack-1200HP energy source
    Courtesy of FSUE VSEGEI

    Lake, FWS-100 source, Jack-1200HP energy source
    Lake, FWS-100 source, Jack-1200HP energy source
    Lake, FWS-100 source, Jack-1200HP energy source

      

    ModelMax energyLevelsMax J at levelTips at levelGroups at levelRecommended
     MultiJack    		Recommended
     coaxial HV cable
    FWS-1251 2501125012621250HP1.52×10
    FWS-2502 5001250025242500HP3.04×12.5
    FWS-5005 0001500050445000HP6.04×12.5

    RadExPro

    ZondST2d — 2D seismic data processing and interpretation software

    ZondST3d — 3D seismotomography interpretation (refracted waves)

    Marine Sparkers SWS

    • Exceptional signature repeatability
    • Optimal towing depth
    • Non-wearing electrodes
    • Adjustable depth
    • Stainless steel frame

    Marine sparkers are among most widely used high and ultra-high resolution seismic sources for reflection marine seismic surveys.

    Modern sparkers are used for all types of engineering and scientific applications and operate in wide range of water depth – from first meters up to several kilometers, providing detailed, high-resolution images of subsurface.

    GEODEVICE designs and produces full range of marine sparkers: starting from lightweight SWS-250 for shallow engineering purposes up to powerfull SWS-2500 for oceanology studies.

    SWS-500 with GPS antenna on deck before the survey. Source is connected to HV power cable, wounded on an automatic winch

    All our sparkers support industry standard 2D and 3D acquisition techniques and ensure succesfull long-term in-field operations due to:

    • Exceptional signature repeatability
    • Optimal towing depth with it’s easy adjustment if required
    • Non-wearing electrodes due to negative discharge technology of MultiJack Energy Source
    • Specific tip arrangement for optimal signal generation
    • GPS installment tool for high-precision positioning

    Review some of our most popular modifications:

    SWS-500

    • Applicable for 2D/3D surveys
    • Vertical resolution up to 10 cm
    • Operational depth range – 3 m to 1500 m
    • Penetration up to 500 m below the seabed
    • Applications:
      •     Geohazard assessment
      •     Renewable installations
      •     Engineering surveys
      •     Mineral explorations
      •     Stratigraphic studies

    Data examples:

    Arctic Ocean, SWS-600 source, MultiJack-5000HP4.5 energy source
    Courtesy of  MAGE

    Arctic Ocean, SWS-270 source, MultiJack-5000HP4.5 energy source
    Courtesy of OJSC AMIGE

    Arctic Ocean, SWS-800 source, MultiJack-5000HP4.5 energy source
    Courtesy of LLC SPLIT

    TypeModelMax energyLevelsMax J at levelTips at levelGroups at levelRecommended
     MultiJack    		Recommended
     coaxial HV cable
    Conventional
     marine    		SWS-1251 2501125012621250HP1.52×10
    SWS-2502 5001250025242500HP3.04×12.5
    SWS-5005 0001500050045000HP6.04×12.5
    SWS-100010 0001100001008410000HP124×12.5
    SWS-250025 0001250002520625000HP126×16.7
    Dual-level
     marine sparkers    		2×SWS-2505 0002250025222×2500HP3.04×12.5
    2×SWS-50010 00025000504410000HP12 or 2×5000HP6.02×(4×12.5)
    2×SWS-100020 0002100001008425000HP12 or 2×10000HP122×(4×12.5)
    2×SWS-250050 0002250002520650000HP12 or 2×25000HP126×50
    Triple-level
     marine sparkers    		3×SWS-2507 5003250025223×2500HP3.06×16.7
    3×SWS-50015 0003500050423×5000HP6.06×16.7
    3×SWS-100030 000310000100823×10000HP126×50
    3×SWS-250075 000325000252023×25000HP126×50

    DWS sparker for deep-towed high-resolution systems

    • Vertical resolution up to 10 cm
    • Works in sea and fresh water
    • Zero electrode wear
    • Wide frequency range
    • Optional pressure plugs and pressure sensors

    The use of deep-towed high-resolution systems allows us to solve a number of problems that, due to physical limitations, cannot be implemented with near-surface equipment – one of these problems is the transition to the assessment of the elastic properties of bottom sediments.

    Placing the receiving-emitting line below the target reflection time has a number of advantages over the traditional method and allows you to:

    • Receive target reflections uncomplicated by interference with satellite waves.
    • Significantly reduce the impact of towing noise on the recording.
    • Increase the resolution of the laterals.
    • Increase the range of angles of incidence for the boundary under study.
    • To increase the bandwidth in the process.
    • Go to the evaluation of the elastic properties of the medium.

    In such studies, the forward wave pulse is not complicated by ghost-waves, which makes it possible to use it to control the quality of the excitation stability and evaluate the pulse shape for subsequent processing.

    However, the implementation of a survey with a deep towed system is technically more complex than the classical surface collection method. Such work has not become widespread due to the difficulty of monitoring the exact position of the source and receiving line positions, as well as the complexity of data processing.

    Realizing the important advantages of implementing deep surveys, we tried to solve a number of practical problems and offer a working industrial solution, including a deep-seated DWS sparker with replaceable electrode groups, special single-core load-bearing coaxial supply lines, depressors, pressure sensors, single-channel and multi-channel towed hydrophone streamers.

    The DWS deep towed sparker is a sealed connector mounted on a single-core load-bearing coaxial cable with replaceable multi-electrode groups and a removable container for operation in fresh water. The frequency composition of the emitted signal increases with the deepening of the sparker due to an increase in hydrostatic pressure and a decrease in the life period (growth-collapse) of the vapor-gas cavity. In this regard, a relatively small number of electrodes in the radiating group is sufficient for operation – we offer replaceable attachment for 1, 10, 50 or 100 electrodes.

    DWS sparkers are equipped with electrodes groups with an increased service life, which ensures a stable source signature at high energies per electrode, and also minimizes operational maintenance. Several models of easily replaceable groups allow you to achieve the desired pulse shape, and the design with minimal hydrodynamic resistance facilitates effective sinking.

    The immersion of the receiving and radiating system to the required depth is provided by specialized depressors suspended on a load-bearing cable supply line, and the control of sinking is performed using optional pressure sensors that can be installed inside the seismic streamer and / or attached to the sparker.

    We manufacture the sources of the required power and configuration. For the correct preparation of technical specifications for the purchase or rental of equipment, please contact us in any way specified on the website. The data processing capabilities can be found here. 

     DWS-1DWS-10DWS-50DWS-100
    Tips11050100
    The recommended range of energies100 ÷ 1 250 J
    Sound pressure level relative to 1 µPa at a distance of 1 m217 dB (at energy 3 J on the electrode)217 dB (at energy 3 J on the electrode)219 dB (at energy 3 J on the electrode)220 dB (at energy 3 J on the electrode)
    Pulse length*0.75 ÷ 2 ms
    Frequency range*100 ÷ 8 000 Hz
    Recommended MultiJack1250HP1.5
    Recommended coaxial supply line1×20

    *depending on the energy applied

    Towed HRStreamer for high resolution and ultra-high resolution marine seismic

    • Suitable for all types of HR/UHR surveys
    • Supports optimal towing depth, slanted cable and deep tow acquisitions
    • High sensitive hydrophones, protected from acceleration noise
    • AVO friendly
    • Custom configurations available

    HRStreamer is an easy-to-operate seismic streamer, which perfectly suits for basic UHR/HR marine seismic surveys.

    HRStreamer is protected from acceleration noises and allows to receive broadband signal in 10-10000Hz frequency range, which ensures registering the signal from UHR sources without any high frequency energy loses.

    Main advantage of the streamer is its flexibilty in terms of group adjustment. We designed unique streamer, which can be applied for wider depth range without loss of resolution comparing to traditional single-channel streamers.

    We use 4 groups with variable length, starting from the pure single hydrophone group and ending up with 48 hydrophones per group. These groups receive signal separately and can be used on its own or/and stacked together to increase signal-to-noise ratio.

    Single channel HRStreamer can be easily placed on a small boat and deployed/retrieved by a single person.

    Key features:

    • Wide depth range application due to variable length of hydrophone groups
    • Broadband signal registration: 10-10000 Hz
    • Towed buoys with positioning system
    • Noise acceleration protection
    • Environmental and shipping friendly (non-flammable filler)
    • Can be used with any HR/UHR source (sparker, boomer)
    • Easy to operate and maintenance

    In addition to HRStreamer the following items can be purchased:

    Lake, G-Boomer HF source, MultiJack-500HP1.5 energy source, HRStreamer:

    Lake, FWS-250 source, MultiJack-2500HP3.0 energy source, HRStreamer:

    Lake, FWS-125 source, MultiJack-500HP1.5 energy source, HRStreamer:

    Cable system
    Typelinear with preamplifiers
    Number of channels1-4
    Channel spacingas agreed
    End connector typeas agreed
    External diameter32 mm
    Piezoelectric element
    Operating frequency range10 – 10 000 Hz
    Sensitivity180 uV/Pa
    Capacity4000 pF
    Maximum operating pressure40 atm
    Preamplifier
    Typelow-noise asymmetric
    Gain6 dB
    Current consumption per channel10 mA
    Output impedance395 Ohm
    Supply voltage±12 V, bipolar
    Maximum output level±3.8 V
    RMS voltage of the intrinsic electrical noise,
    given by output, in the operating frequency band    		≤10 mkV
    Operation conditions
    Operating temperature range-10 ÷ +70 °С
    Storage temperature range-40 ÷ +70 °С

    RadExPro

    Multichannel towed hydrophone streamers HRStreamer-24 and HRStreamer-48

    • Registration in a wide frequency range
    • Acceleration-insensitive hydrophones
    • Groups or single receivers
    • Low-noise preamps
    • Optional pressure sensors
    • Eco-friendly and safe filler

    Multichannel HRStreamer is an easy to operate robust hydrophone array with up to 48 channels. We produce streamers with various group spacing, depending on the acquistion task – it can be 1 m, 2 m, 3.125 m or 6.25 m between groups.

    Number of channels in the streamer and separation between them mostly depends on the required resolution of the study. Typically, stratigraphy and shallow gas detection surveys are performed with 48 channel streamers with 3.125 m separation in between. Studies, which require identification of finer details, such as boulder detection for windfarm installations, are performed with 1 or 2 meter separation between the channels, resulting in 0.5/1 meter bin size.

    Hybrid hydrophone spacing, which is also available for manufacture, could provide a good trade-off between streamer length and trace density in the upper part of the section.

    All hydrophones are protected from acceleration to ensure the lowest noise level, resulting in high quality seismic images.

    HRStreamer is suited for all types of modern high resolution acquisitions, such as conventional surveys with optimal towing depth or slanted cable. Maximum allowable working pressure of 40 atm also allows to use HRStreamer for deep towed marine acquisition surveys. High accuracy depth control sensors, distributed along the receiver array provide exact measurements of streamer towing depth in real time to meet your acquisition expectations.

    For the best storage and usage experience all mutichannel streamers are supplied on deck winches. Manual and automatic versions of reels are available for purchase.

    Key features:

    • Applicable for all modern HR/UHR seismic surveys
    • Compatible with all types of high-resolution seismic sources
    • Towing depth control
    • Broadband signal registration: 10-10000 Hz
    • Noise acceleration protection
    • Environmental and shipping friendly (non-flammable filler

    Package contents:

    • Seismic streamer
    • Tow cable
    • Tensioner with draw bar
    • Battery pack
    • Battery charger
    • Technical documentation
    • Low-noise power supply (optional)
    • Built-in pressure sensors and INS (optional)

    Marine (SWS), freshwater (FWS) or deep-water (DWS) sparkers are used as high-frequency sources along with MultiJack energy sources. Data logging is provided by multi-channel high-frequency seismic stations. Specially designed SDW deck winches ensure the safety and convenience of performing descent lifting operations, towing and storage of streamers.

    In addition to HRStreamer the following may be purchased:

    To select the right configuration of the streamer or to draw up a technical specification for the purchase / rental of a complete equipment set for performing the survey, contact us in any way specified on the website. The data processing capabilities can be found here. We can also provide training for your staff in equipment and data processing skills as well as accompany or launch your project.

    Streamer
    Typelinear with pre-amplifiers
    Number of channels24 or 48
    Interval between channelsas agreed
    Type of end connectoras agreed
    Outer diameter42 mm
    Piezoelectric element
    Operating frequency range10 – 10 000 Hz
    Sensitivity of piezoelectric element180 dB
    Capacitance of piezoelectric element4000 pF
    Maximum operating pressure40 atm
    Preamplifier
    Typelow-noise asymmetric
    Gain factor6 dB
    Current consumption per channel10 mА
    Output impedance395 Ohm
    Supply voltage±12 V, bipolar
    Maximum output level±3.8 V
    RMS voltage of the intrinsic electrical noise,
    given by the output, in the operating frequency band    		≤10 mkV
    Operation conditions
    Operating temperature range-10 ÷ +70 °С
    Storage temperature range-40 ÷ +70 °С

    RadExPro

    BHStreamer − Bottom hydrophone streamer

    • Streamlined solid-state design
    • Wide frequency range (1 ÷ 8 000 Hz)
    • Low-noise preamps
    • Optional pressure sensors

    BHStreamer – a universal bottom hydrophone streamer designed for performing seismic surveys or monitoring in the water area. The streamer is manufactured in 24-channel or 48-channel versions with any pitch between single quick-response and acceleration-insensitive hydrophones. High-quality data is also ensured by low-noise preamps on each channel, shielded cables and a solid-state streamlined design without any cable tails.

    A wide frequency range (1 ÷ 8 000 Hz) provides registration of all types of waves, including Scholte ones, which can be used to determine the velocities of guided S-waves in the upper part of the section via UMASW (Underwater Multichannel Analysis of Surface Waves) method.

    BHStreamer can be connected to any modern linear seismograph – just provide us with the model of it so that we can install a compatible connector and ensure its correct pin arrangement.

    While performing data processing, it becomes especially important to describe the acquisition layout, for which it is necessary to be capable to calculate the position of each hydrophone on the bottom. In shallow waters, this problem is resolved by simple referencing of each channel with standard features. At depths of more than 1 m, the coordinates can be calculated using optionally installed pressure sensors with the necessary step along the streamer or by calculating the RP coordinates through a direct wave from the source.

    Specifically, for the BHStreamer we have developed 2 versions of shielded load-bearing cables with longitudinal sealing. The durable polyurethane cable sheath remains flexible in all weather conditions, does not break down on deck from UV light, is ideal for seawater and provides excellent maintainability. Kevlar reinforcement and stainless-steel Kellems grip installed at the beginning and end of the streamer ensure the safety and convenience of installing the receiving line on the bottom, using an anchor fixed at the end of the streamer, and its reliable fastening on the ship.

    Power to the pre-amplifiers located in the immediate vicinity of the hydrophones is provided by the included battery pack or an optional low-noise power supply.

    Marine (SWS), freshwater (FWS) or deep-water (DWS) sparkers along with MultiJack energy sources are used as high-frequency sources as well as seismic guns with civilian blank cartridges.

    Package contents:

    • Seismic Streamer
    • Battery pack
    • Battery charger
    • Low-noise power supply (optionally)
    • Reel or winch (optionally)
    • Pressure sensors (optionally)

    To select the right configuration of the streamer or to draw up a technical specification for the purchase or rental of a complete equipment set of equipment for performing the survey, contact us in any way specified on the website. The data processing capabilities can be found here. We can also provide training for your staff in equipment and data processing skills as well as accompany or launch your project.

    Streamer
    Typelinear with pre-amplifiers
    Number of channels24 or 48
    Geophone group interval2, 4 and 5 m or as agreed
    Type of end connectoras agreed
    Outer diameter42 mm
    Piezoelectric element
    Operating frequency range1 – 8 000 Hz
    Sensitivity of the piezoelectric element180 mkV/Pa
    Capacitance of the piezoelectric element4000 pF
    Maximum operating pressure40 atm
    Preamplifier
    Type of pre-amplifierlow-noise asymmetric
    Gain factor6 dB
    Current consumption per channel10 mА
    Output impedance395 Ohm
    Supply voltage±12 V, bipolar
    Maximum output level±3.8 V
    The root-mean-square voltage of the intrinsicelectrical noise, given by the output, in the operating frequency band≤10 mkV
    Operation conditions
    Operating temperature range-10 ÷ +70 °С
    Storage temperature range-40 ÷ +70 °С

    RadExPro

    ZondST2d — 2D seismic data processing and interpretation software

    Front and tail buoys

    • Easy and robust
    • Two options of GNSS receivers
    • RTK and PPK capabilities
    • Centimeter level positioning accuracy
    • Flashing lights for 24/7 operations
    • Continuous RAW GNSS data logging

    Modern ultra-high resolution marine seismic surveys provide high-density spatial coverage with up to 0.5 m bin size. Such surveys require accurate positioning of the source-receiver spread to achieve desired resolution.

    Front and tail buoys is a crucial part of 2D and 3D high-resolution marine seismic surveys, as they provide high accuracy control of streamer position, its towing depth and steering.

    GEODEVICE manufactures robust and easy-to-use buoys, equipped with water-resistant multiband GNSS receivers with radio modems for wireless communication with onboard station.

    GNSS receivers placed on front and tail buoys enable highly accurate hydrophone positioning with RTK or PPK modes, allowing for real-time coverage control.

    The streamer fasteners, placed every 10 cm, keep the receiver cable at a pre-determined towing depth, allowing for the easy implementation of constant or slanted acquisition techniques using the buoys.

    MaterialsStainless steel and polymer
    Dimensions1125×290×1590mm + 1000mm pole with GNSS receiver
    Weight30 kg with GNSS receiver, battery and flashing lights
    Satellite signalsGPS L1C/A, L2C; GLONASS L1OF, L2OF; Galileo E1B/C, E5b; BeiDou B1I, B2I; QZSS L1C/A, L1S, L2C
    SBAS signal receptionWAAS, EGNOS, MSAS, GAGAN
    Horizontal position accuracySBAS: 1 m RTK: 0.01 m + 1 ppm
    Communication with onboard or onshore GNSS base station433 / 868 / 900 / 915 MHz and optional GSM modem for broadcasting RTK positioning and receiving corrections
    RTK moderover, base or moving base
    Radiolink rangeup to 2 km or longer with larger antenna
    Autonomy in radio mode5 days with 95Wh battery or longer with larger battery
    RTK moderover
    ConnectorsUSB
    Wireless connectionWi-Fi, Bluetooth
    Offline position loggingtrack in txt and RAW GNSS data in RINEX with update rate up to 10 Hz
    Memorybuilt-in microSD up to 32 GB
    Flash lightyes
    Operating temperature-20 to +65 ºC
    Power3.7 VDC
    BatteryLi-ion, 3.7V, 95Wh

    Multi-band L1/L2 RTK/PPK GNSS receivers NK and FD for geophysical and hydrographic applications

    • Sealed vibration-proof housing
    • Radio link for communication
    • Rover, base or moving base modes
    • Raw GNSS data recording
    • External or built-in signal lights
    • Sealed batteries

    We have developed NK and FD sealed and vibration-proof GNSS receivers for navigation support of offshore hydrographic and geophysical surveys. The receivers can be mounted both on the vessel and on outboard equipment, such as towed buoys for seismic streamers and electrode arrays, as well as on seismic sources such as Sparker or Boomer. Built-in radio modems provide RTK operation and real-time transmission of navigation data to the vessel.

    NK GNSS system
    This is the most affordable option when the positioning of a large number of onboard devices is not required, for example when performing single channel UHR seismic or marine electrical resistivity and IP surveys. The onboard receiver is equipped with a radio modem and two RS232 connectors for transmitting data from both devices to a PC. The outboard receiver can be equipped with an optional GSM modem to receive NTRIP corrections from an onshore GNSS base to ensure centimeter accuracy of positioning in real time. Both receivers continuously record raw GNSS data for post-processing kinematic (PPK). Receiving data from additional outboard receivers requires a second (paired) onboard GNSS receiver or an optional radio modem unit. The NK receiver can be supplied with external signal lights mounted on a same pole and powered by a battery with two sealed connectors.

    FD GNSS system
    FD receivers are equipped with built-in signal lights and provide unique scalability with a virtually unlimited number of acquisition units. The system is optimized for multi-channel 2D/3D seismic surveys where from 4 to 20 or more simultaneously operating GNSS receivers are required. In addition, the receivers can operate in Moving base mode, i.e. when the base station is installed on the vessel and the coordinates of the outboard devices are measured with centimeter accuracy relative to it. This approach allows to have two or three receivers onboard to accurately measure course and roll of the vessel, as well as for “casting” the accuracy of the vessel’s “PPP” GNSS receiver to the outboard devices. Built-in radio modems provide two-way communication for receiving the correction and returning the RTK positioning back to the vessel. Navigation data reception on the PC is realized using the radio modem unit with Ethernet interface, which allows to place it in a suitable place on the vessel.

    Radio modems
    Different countries allow different unlicensed frequency ranges for civilian use. We use a wide range of RF modems and depending on the area of use we can equip receivers witn frequencies 433 / 868 / 900 / 915 MHz with an output power of up to 1W. The design of receivers provides easy replacement of radio modem antennas to ensure the necessary communication range.

    As always, we think about every detail of the equipment we develop

    • Any of the developed receivers can be used in Base (fixed installation on land) or Rover modes.
    • Power supply of the NK/FD GNSS receivers as well as external signal lights units are provided by sealed batteries with capacity of 95 Wh. They can be transported by any transportation without any problems and have a capacity of at least 5 days of autonomy. If you need more autonomy, we can offer even more powerful batteries.
    • All receivers are vibration-proof – the electronics are literally suspended on an elastic “skirt” in a spacious housing.
    • External signal lights are equipped with photodetector for automatic switching on/off. Operation mode of built-in lights in FD receivers can be not only programmed by time, but also controlled directly from the vessel via radio link.
    • Onboard and outboard FD GNSS receivers are unified and do not differ from each other.
    • Onboard NK GNSS receiver is equipped with a PPS+NMEA0183 connector for operation with DAQlink4/Sigma4.
    FD buoy/onboard GNSS RTK/PPK receiver with radio and flashing lightsNK buoy PPK GNSS receiver with radio and optional RTK capabilityNK onboard RTK/PPK GNSS receiver with radio for receiving outboard GNSS receiver positioning
    Satellite signalsGPS L1C/A, L2C; GLONASS L1OF, L2OF; Galileo E1B/C, E5b; BeiDou B1I, B2I; QZSS L1C/A, L1S, L2C
    SBASWAAS, EGNOS, MSAS, GAGAN
    Horizontal position accuracySBAS: 1 m
    RTK: 0.01 m + 1 ppm
    RTK moderover, base or moving baserover with optional GSM modem, baserover, base
    CorrectionsRTCM3NTRIP with optional GSM modemNTRIP
    GNSS antennamultiband built-in
    Radio433 / 868 / 900 / 915 MHz up to 1W
    Maximum number of outboard GNSS roversunlimited1 or more with optional extra modems
    Radio rangenormally up to 2 km / optionally up to 20 km
    ConnectorsUSB, powerUSB, power, SIM (optional)2×RS232, UART, power
    Wireless connectionWi-Fi, BluetoothWi-Fi, Bluetooth, optional GSMWi-Fi, Bluetooth
    Data loggingtrack in txt and RAW GNSS data in RINEX with update rate up to 10 Hz
    Memorybuilt-in microSD
    Flash lightbuilt-inexternal module (optional)–
    Operating temperature-20 to +65 ºC
    Power3.7 VDC5 VDC
    External batteryLi-ion, 3.7V, 95Wh–

     FD onboard radioNK onboard radio
    Radio communication433 / 868 / 900 / 915 MHz up to 1W
    Maximum number of outboard GNSS rovers4 or more with optional extra modems1 or more with optional extra modems
    Radio rangenormally up to 2 km / optionally up to 20 km
    Connectors100Base-TX, USB, DC power, AC power, virtual COM portsone or several USB, DC power
    Operating temperature-20 to +65 ºC
    Power24 VDC and 85-264 VAC5 VDC

    Deck winch DW

    • IP-66 protection
    • High-voltage slip ring
    • Integrated patch panel
    • Stainless steel frame and drum
    • Manual or electric drive

    Our deck winches are specifically engineered for use on seismic vessels to handle seismic streamers and high-voltage power cables.

    Deck winch with a power cable, connected to a sparker

    The use of winches significantly speeds up deployment and recovery operations while providing full control over the process. The winches are suitable for both 2D and sophisticated high-resolution and ultra-high-resolution 3D seismic surveys, making them a versatile option for any type of project.

    Our motorized winches are ideal for deploying and recovering 48-channel streamers and sparker power cables. Manual reels, on the other hand, are well suited for small vessels. The use of winches and reels greatly improves acquisition efficiency and operational safety. IP-67 protection and high quality materials make winches extremely durable and optimal for rough offshore environments.

    All sparker source winches come with a high voltage slip ring to ensure safe and efficient winch operation and an integrated patch panel for easy cable connection and source signature control.

    Deck winch with a multichannel streamer

    Check our video demonstrating the use of a reel on a seismic vessel:

    ModelDW-250SRDW-450SRDW-600SRDW-300_MariMag
    Compatible equipmentHRStreamer-1×48/0.5/250mHRStreamer-24х1/1/75mHRStreamer-24х1/2/75mHRStreamer-24х4/3.125/75mHRStreamer-48×1/1/75mHRStreamer-48×1/1-2/75mHRStreamer-48×1/2/75mHRStreamer-48×4/3.125/75mHRStreamer-24×4/6.25/100mMariMag tow cable:- 450 m of floating cable
    Materialsstainless steel
    Built-in sealed case–
    Slipringlow voltage
    Drum pitch diameter, mm500800
    Drum outer diameter, mm1 0001 4001 200
    Drum width, mm400450600450
    Driveelectric gear motor
    Motor power, W1 100
    Power supply220 or 380 VAC 50/60 Hz
    Weight without cable, kg200290300220
    Dimensions, mm1100×985×9801440×1470×11801440×1470×13301200×1270×1125
    ProtectionIP 67

    ModelDW-300HVDW-600HVDW-800HV
    Compatible equipmentsparker/boomer tow cable:- 1×50/50m- 1×50/75m- 1×100/50m- 4×11/50m- 4×11/75msparker/boomer tow cable:- 1×100/75m- 1×100/100msparker/boomer tow cable:- 6×16/75m
    Materialsstainless steel
    Built-in sealed casewith patch panel
    Slipringhigh voltage
    Drum pitch diameter, mm800
    Drum outer diameter, mm1 2001 400
    Drum width, mm450600800
    Driveelectric gear motor
    Motor power, W1 100
    Power supply220 or 380 VAC 50/60 Hz
    Weight without cable, kg250330350
    Dimensions, mm1200×1270×11251440×1470×13301440×1470×1620
    ProtectionIP 67

    Equipment & Software for Geophysical Surveys: Design, Manufacture, Support, Supply

    GEODEVICE is a group of specialized companies that develops, manufactures, and supplies
    advanced geophysical equipment and software for a wide range of applications, from land-
    based surveys to marine and borehole explorations.
    The key areas of GEODEVICE developments are high and ultra-high resolution marine seismic,
    borehole seismic, land, drone and marine magnetic.

    The focus is on a broad range of industries and scientific fields, providing tailored solutions for:

    • Geotechnical Monitoring
    • Engineering Surveys
    • Environmental Surveys
    • Archaeological Surveys
    • Geophysical Support for Geological Exploration

    Let’s Connect

    Need assistance? Get in touch with our team.

    Contact Us