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

Product code : 1592556913

HRStreamer is a range of high sensitive single and multichannel marine towed streamers, specifically designed for high resolution and ultra-high resolution engineering marine seismic applications.

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    We have developed a unique type of single channel streamers with adjustable group length. Typically, the group length of single channel marine streamers is fixed and designed for operations in specific water depth range - the deeper water depth, the longer group is used to increase signal level. Long groups can hardly be used for shallow water acquisitions due to their directivity pattern, which results in filtering out high frequency energy.  We were able to overcome this issue by placing up to 4 groups with variable length, making the HRStreamer a universal solution for acquisitions in wide water depth ranges. Combining all groups together results in an equivalent single group length to increase signal-to-noise ratio.

    Multichannel HRStreamer is an easy to operate hydrophone array with up to 48 channels. Various group intervals are available for manufacture, such as standard spacings of 1 m, 2 m, 3.125 m, 6.25 m or popular these days combination of mixed hydrophone spacing in one streamer. Mixed hydrophone spacing of 1 and 2 meters provides 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 acquisition techniques, including conventional surveys with optimal towing depth and slanted cable registration. 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.

    Additionally, HRStreamer may be manufactured with single hydrophone per group to provide uniform directivity pattern of each receiver group. In combination with non-directional source, such as single-tip sparker they will provide AVO friendly high resolution marine seismic setup.

    In addition to HRStreamer the following items can be purchased:
    Cable system
    Type linear with preamplifiers
    Number of channels 1-48
    Interval between channels as agreed
    End connector type as agreed
    External diameter from 32 mm
    Piezoelectric element
    Operating frequency band 10 – 10 000 Hz
    Sensitivity 180 ± 30 uV/Pa
    Capacity 4000 pF
    Maximum working pressure 40 atm
    Sensitivity to accelerations protected against acceleration
    Preamplifier
    Type low-noise dissymmetric
    Gain 6 ± 0,5 dB
    Current consumption per channel 10 ± 1mA
    Output resistance 395 Ohm
    Power supply voltage ±12 V, bipolar
    Maximum output level ±3,8 V
    Root-mean-square voltage of the intrinsic electrical noise,
    given by output, in the operating frequency band
    less than 10 μV
    Usage conditions
    Operating temperature range -10 .. +70 °С
    Storage temperature range -40 .. +70 °С

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