CN105738951A - Multi-node OBS vertical cable earthquake collection system - Google Patents
Multi-node OBS vertical cable earthquake collection system Download PDFInfo
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- CN105738951A CN105738951A CN201610300796.1A CN201610300796A CN105738951A CN 105738951 A CN105738951 A CN 105738951A CN 201610300796 A CN201610300796 A CN 201610300796A CN 105738951 A CN105738951 A CN 105738951A
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- 239000011521 glass Substances 0.000 claims description 47
- 238000000034 method Methods 0.000 claims description 29
- 230000035807 sensation Effects 0.000 claims description 27
- 239000000725 suspension Substances 0.000 claims description 20
- 238000009413 insulation Methods 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 9
- 229920001971 elastomer Polymers 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 6
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 239000010963 304 stainless steel Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 240000007817 Olea europaea Species 0.000 claims description 3
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920002313 fluoropolymer Polymers 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 238000007747 plating Methods 0.000 claims description 3
- 229920001084 poly(chloroprene) Polymers 0.000 claims description 3
- 238000004073 vulcanization Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 abstract description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract 1
- 239000003345 natural gas Substances 0.000 abstract 1
- -1 natural gas hydrates Chemical class 0.000 abstract 1
- 238000009954 braiding Methods 0.000 description 12
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
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- 238000011156 evaluation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3808—Seismic data acquisition, e.g. survey design
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/38—Seismology; Seismic or acoustic prospecting or detecting specially adapted for water-covered areas
- G01V1/3843—Deployment of seismic devices, e.g. of streamers
- G01V1/3852—Deployment of seismic devices, e.g. of streamers to the seabed
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- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a multi-node OBS vertical cable earthquake collection system. The system comprises a first hydrophone array cable, a collection station, a second hydrophone array cable, a positioning floating drum, a floating body, an acoustic releaser and a counterweight anchor. Auxiliary bearing cables are weaved on the surfaces of the first hydrophone array cable and the second hydrophone array cable. Pressure-resistant hydrophones are uniformly and isometrically distributed on and connected with the first hydrophone array cable and the second hydrophone array cable along the axial direction. The collection is connected with and fixed on the part between the lower end of the auxiliary bearing cable weaved on the surface of the first hydrophone array cable and the upper end of the auxiliary bearing cable weaved on the surface of the second hydrophone array cable. The collection station comprises a main collection station and a slave collection station, is used for exploring seabed earthquakes and natural gas hydrates and is capable of carrying out unconventional processing on stereo observation earthquake data according to the characteristics of hydrate ore bodies such as a seabed diffuse type hydrate ore body, carrying out modeling and imaging on wideband wide-angle earthquake reflection stratums and providing technical support for hydrate identification and reserve prediction.
Description
Technical field
The present invention relates to offshore earthquake and natural gas hydrate resources exploration engineering field, be specifically related to a kind of vertical cable seismic acquisition configuration of multinode OBS.
Background technology
Along with the development of OBS and submarine seismograph exploration engineering and perfect, OBS has obviously effect in exploration sea bed gas hydrate.But current existing OBS equipment cannot be carried out the unconventional process of stereopsis geological data, wideband wide-aperture seismic reflection stratum modeling and imaging for the feature of the hydrate ore bodies such as seabed diffused, provide technical support for hydrate identification and reserve forecasting.Therefore, for realizing the target of sea bed gas hydrate resource exploration and pilot production, meet the general requirement of " subject study provides technical support for Gas Hydrate of The South China Sea resource exploration and environmental evaluation " this project, it is accomplished by the feature for hydrate ore bodies such as seabed diffuseds, the R & D design one natural gas hydrate resources vertical cable seismic acquisition configuration of exploration multinode OBS.
Summary of the invention
For the deficiencies in the prior art, it is desirable to provide a kind of the unconventional process of stereopsis geological data, wideband wide-aperture seismic reflection stratum modeling and imaging can be carried out for the feature of the hydrate ore bodies such as seabed diffused, provide the vertical cable seismic acquisition configuration of the multinode OBS of technical support for hydrate identification and reserve forecasting.
For achieving the above object, the present invention adopts the following technical scheme that
nullThe vertical cable seismic acquisition configuration of multinode OBS，Including the first hydrophone array cable、Acquisition station、Second hydrophone array cable、Location floating drum、Buoyancy aid、Acoustic releaser and counterweight anchor，Described first hydrophone array cable and the second hydrophone array cable surface are woven with auxiliary load-bearing cable，First hydrophone array cable and the second hydrophone array cable are axially equidistantly uniformly distributed respectively along it and are connected to pressure hydrophone，Acquisition station is fastened between auxiliary load-bearing cable lower end and the auxiliary load-bearing cable upper end of the second hydrophone array cable surface braiding of the first hydrophone array cable surface braiding，The auxiliary load-bearing cable upper end of the first hydrophone array cable surface braiding has been fixedly connected sequentially and has positioned floating drum and buoyancy aid，The auxiliary load-bearing cable lower end of the second hydrophone array cable surface braiding has been fixedly connected sequentially buoyancy aid、Acoustic releaser and counterweight anchor；
Acquisition station includes main acquisition station and from acquisition station, main acquisition station and be arranged on fixing bracket from the horizontal juxtaposition of acquisition station, main acquisition station includes glass apparatus cabin, preamplification gain panel, signal acquiring board, signal record plate, signal forward process module and power supply control administrative unit, preamplification gain panel, signal acquiring board, signal record plate, signal forward process module and power supply control administrative unit and are mounted in glass apparatus cabin, preamplification gain panel connects signal acquiring board, signal acquiring board connects signal record plate, signal acquiring board and signal record plate connect signal forward process module respectively, preamplification gain panel and signal record plate control administrative unit with power supply respectively and are connected, the glass apparatus cabin of main acquisition station is built-in is provided with three-component geophone, three-component geophone connects preamplification gain panel；
Include glass apparatus cabin, preamplification gain panel, signal acquiring board, signal forward process module and power supply from acquisition station and control administrative unit, preamplification gain panel, signal acquiring board, signal forward process module and power supply control administrative unit and are mounted in glass apparatus cabin, power supply controls administrative unit and connects signal acquiring board, signal acquiring board connects preamplification gain panel, and preamplification gain panel connects signal forward process module；
nullMain acquisition station and offer two cable connector holes and a vacuum gas filling hole from the glass apparatus cabin of acquisition station respectively，In cable connector hole, installation settings has weather proof receptacle base，First hydrophone array cable connector connects one of them the weather proof receptacle base on its glass apparatus cabin of main acquisition station and is connected with the preamplification gain panel of main acquisition station，Second hydrophone array cable connector connects from one of them the weather proof receptacle base its glass apparatus cabin of acquisition station and is connected with the signal acquiring board from acquisition station，Another weather proof receptacle base on its glass apparatus cabin of main acquisition station and being connected by watertight cable from another weather proof receptacle base its glass apparatus cabin of acquisition station，Another weather proof receptacle base on its glass apparatus cabin of acquisition station connects the signal forward process module of main acquisition station，The signal forward process module from acquisition station is connected from another weather proof receptacle base its glass apparatus cabin of acquisition station.
Further, the auxiliary load-bearing cable lower end of described first hydrophone array cable surface braiding is fixedly connected with load-bearing cable suspension ring, the auxiliary load-bearing cable upper end of the second hydrophone array cable surface braiding is fixedly connected with load-bearing cable suspension ring, the main acquisition station of acquisition station and be respectively fixedly connected with OBS suspension ring from acquisition station corner, main acquisition station and the OBS suspension ring from acquisition station corner are fixing with the auxiliary load-bearing cable upper end load-bearing cable suspension ring of the auxiliary load-bearing cable lower end load-bearing cable suspension ring of the first hydrophone array cable surface braiding and the braiding of the second hydrophone array cable surface respectively by rope to be connected.
Further, described first hydrophone array cable and the second hydrophone array cable are the 21 core watertight Bear high pressure rubber cables that inside is filled with Kafra fiber, first hydrophone array cable and the second hydrophone array cable are axially equidistantly connected to six 4 core hydrophone plug sockets with 25 meters of spacing along it, pressure hydrophone socket connection is on described 4 core hydrophone plug sockets, 21 cores of the first hydrophone array cable and the second hydrophone array cable are divided into two sidings, a piece shared shielding line, six roots of sensation independent signal line, six roots of sensation independent current source line and six roots of sensation independence ground wire, a piece shared shielding line and six 4 core hydrophone plug sockets share and connect, six roots of sensation independent signal line, six roots of sensation independent current source line and six roots of sensation independence ground wire and six 4 core hydrophone plug sockets independently connect.
Further, the described auxiliary load-bearing cable of the first hydrophone array cable surface braiding and the auxiliary load-bearing cable of the second hydrophone array cable surface braiding are six roots of sensation stainless steel cable, and every stainless steel cable is twisted mutually by 304 stainless steel silks that 10 diameters are 1mm and formed.
Further, the described auxiliary load-bearing cable of the first hydrophone array cable surface braiding and the auxiliary load-bearing cable of the second hydrophone array cable surface braiding are fixedly connected with the link being available for hanging the optional assembly such as fixing current meter, USBL location equipment, stroboscopic lamp, VHF wireless launcher.
Further, its glass apparatus cabin of the main acquisition station of described connection and the watertight cable from its glass apparatus cabin of acquisition station are 21 core watertight cables, draw in the middle of this watertight cable can 6 core hydrophone plugs of external extension hydrophone, reserved 2 cores of this 6 core hydrophone plug are standby.
Further, described its signal acquiring board of main acquisition station, signal record plate are connected with computer data by tcp data power board.
nullFurther，It is 0.2 square millimeter that described first hydrophone array cable and second its core section of hydrophone array cable are amassed，Cable inner conductor adopts 19/0.16 tin-plating round copper wire、Conductor diameter is 1.2mm、The maximum D.C. resistance of conductor when 20 DEG C≤150 Ω/km，Between cable internal core wire and heart yearn and shielding line, insulation resistance is at 20 DEG C、During 250VDC >=500M Ω，Stand to exchange 1500V/1min between cable internal core wire and heart yearn with shielding line not puncture，Cable insulation adopts fluoroplastics、Insulation nominal thickness is 0.5mm、Outer insulation diameter is 2mm，Cable shield tinned wird weaves、Count is not less than 85%，Cable jacket is neoprene、Thickness is 4.0mm，Cable tensile strength >=150kg，Weight≤90kg in cable air、Weight≤40kg in water.
Further, the outer layer vulcanization of rubber of described pressure hydrophone becomes flat olive shape, the working band of pressure hydrophone is 2～20KHz, sound pressure sensitivity is-160dB (± 1.5dB) (0dB=1V/ μ Pa), dynamic range >=120dB, change of sensitivity ranges for≤and the every 100 meters of degree of depth of 1.5dB/ reduce (0～5MPa), the every 10 DEG C of temperature of≤1.5dB/ reduce, ± 2.5dB/ working band scope rises and falls, and internal preamplifier amplification is 20 times, preamplifier is voltage-type, supply voltage is+12VDC, supply current≤10mA.
There is advantages that
The vertical cable seismic acquisition configuration of multinode OBS of the present invention, has and can carry out the unconventional process of stereopsis geological data, wideband wide-aperture seismic reflection stratum modeling and imaging, the feature providing technical support for hydrate identification and reserve forecasting for the feature of the hydrate ore bodies such as seabed diffused.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the vertical cable seismic acquisition configuration of multinode OBS of the present invention；
Fig. 2 is the acquisition station master-plan block diagram of the vertical cable seismic acquisition configuration of multinode OBS of the present invention；
Fig. 3 is its main acquisition station of acquisition station of multinode OBS of the present invention vertical cable seismic acquisition configuration and the attachment structure schematic diagram from acquisition station；
Fig. 4 is the pressure hydrophone distribution attachment structure schematic diagram of multinode OBS of the present invention its first hydrophone array cable of vertical cable seismic acquisition configuration and the second hydrophone array cable；
Fig. 5 is the back panel wiring schematic diagram of the core of multinode OBS of the present invention its first hydrophone array cable of vertical cable seismic acquisition configuration and the second hydrophone array cable and 4 core hydrophone plug sockets；
Fig. 6 is the data cube computation schematic diagram of the signal acquiring board of multinode OBS of the present invention vertical cable its main acquisition station of seismic acquisition configuration, signal record plate and computer.
In figure: 1, the first hydrophone array cable；2, acquisition station；3, the second hydrophone array cable；4, location floating drum；5, buoyancy aid；6, acoustic releaser；7, counterweight anchor；8, auxiliary load-bearing cable；9, pressure hydrophone；10a, siding；10b, shielding line；10c, holding wire；10d, power line；10e, ground wire；11, link；12, tcp data power board；20, OBS suspension ring；21, main acquisition station；22, from acquisition station；23, fixing bracket；24, glass apparatus cabin；25, preamplification gain panel；26, signal acquiring board；27, signal record plate；28, signal forward process module；29, power supply controls administrative unit；30, watertight cable；24a, cable connector hole；24b, vacuum gas filling hole；24c, weather proof receptacle base；241, three-component geophone；30a, 6 core hydrophone plugs；81, load-bearing cable suspension ring；90,4 core hydrophone plug socket.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the invention will be further described, in order to the technological thought that clearer understanding is claimed.
nullSuch as Fig. 1、2、The vertical cable seismic acquisition configuration of multinode OBS of the present invention shown in 3，Including the first hydrophone array cable 1、Acquisition station 2、Second hydrophone array cable 3、Location floating drum 4、Buoyancy aid 5、Acoustic releaser 6 and counterweight anchor 7，It is 0.2 square millimeter that first hydrophone array cable 1 and second its core section of hydrophone array cable 3 are amassed，Cable inner conductor adopts 19/0.16 tin-plating round copper wire、Conductor diameter is 1.2mm、The maximum D.C. resistance of conductor when 20 DEG C≤150 Ω/km，Between cable internal core wire and heart yearn and shielding line, insulation resistance is at 20 DEG C、During 250VDC >=500M Ω，Stand to exchange 1500V/1min between cable internal core wire and heart yearn with shielding line not puncture，Cable insulation adopts fluoroplastics、Insulation nominal thickness is 0.5mm、Outer insulation diameter is 2mm，Cable shield tinned wird weaves、Count is not less than 85%，Cable jacket is neoprene、Thickness is 4.0mm，Cable tensile strength >=150kg，Weight≤90kg in cable air、Weight≤40kg in water；First hydrophone array cable 1 and the second hydrophone array cable 3 surface weave have auxiliary load-bearing cable 8, the auxiliary load-bearing cable 8 of the first hydrophone array cable 1 surface weave and the auxiliary load-bearing cable 8 of the second hydrophone array cable 3 surface weave are six roots of sensation stainless steel cable, and every stainless steel cable is twisted mutually by 304 stainless steel silks that 10 diameters are 1mm and formed；First hydrophone array cable 1 and the second hydrophone array cable 3 are axially equidistantly uniformly distributed respectively along it and are connected to pressure hydrophone 9, the outer layer vulcanization of rubber of pressure hydrophone 9 becomes flat olive shape, the working band of pressure hydrophone 9 is 2～20KHz, sound pressure sensitivity is-160dB (± 1.5dB) (0dB=1V/ μ Pa), dynamic range >=120dB, change of sensitivity ranges for≤every 100 meters of degree of depth reduction (0～5MPa) of 1.5dB/, the every 10 DEG C of temperature of≤1.5dB/ reduce, ± 2.5dB/ working band scope rises and falls, internal preamplifier amplification is 20 times, preamplifier is voltage-type, supply voltage is+12VDC, supply current≤10mA；Acquisition station 2 is fastened between auxiliary load-bearing cable 8 lower end and auxiliary load-bearing cable 8 upper end of the second hydrophone array cable 3 surface weave of the first hydrophone array cable 1 surface weave, auxiliary load-bearing cable 8 upper end of the first hydrophone array cable 1 surface weave has been fixedly connected sequentially location floating drum 4 and buoyancy aid 5, and auxiliary load-bearing cable 8 lower end of the second hydrophone array cable 3 surface weave has been fixedly connected sequentially buoyancy aid 5, acoustic releaser 6 and counterweight anchor 7；nullAcquisition station 2 includes main acquisition station 21 and from acquisition station 22，Main acquisition station 21 and being arranged on fixing bracket 23 from the horizontal juxtaposition of acquisition station 22，Main acquisition station 21 includes glass apparatus cabin 24、Preamplification gain panel 25、Signal acquiring board 26、Signal record plate 27、Signal forward process module 28 and power supply control administrative unit 29，Preamplification gain panel 25、Signal acquiring board 26、Signal record plate 27、Signal forward process module 28 and power supply control administrative unit 29 and are mounted in glass apparatus cabin 24，Preamplification gain panel 25 connects signal acquiring board 26，Signal acquiring board 26 connects signal record plate 27，Signal acquiring board 26 and signal record plate 27 connect signal forward process module 28 respectively，Preamplification gain panel 25 and signal record plate 27 control administrative unit 29 with power supply respectively and are connected，The glass apparatus cabin 24 of main acquisition station 21 is built-in is provided with three-component geophone 241，Three-component geophone 241 connects preamplification gain panel 25；Include glass apparatus cabin 24, preamplification gain panel 25, signal acquiring board 26, signal forward process module 28 and power supply from acquisition station 22 and control administrative unit 29, preamplification gain panel 25, signal acquiring board 26, signal forward process module 28 and power supply control administrative unit 29 and are mounted in glass apparatus cabin 24, power supply controls administrative unit 29 and connects signal acquiring board 26, signal acquiring board 26 connects preamplification gain panel 25, and preamplification gain panel 25 connects signal forward process module 28；nullMain acquisition station 21 and offer a two cable connector hole 24a and vacuum gas filling hole 24b from the glass apparatus cabin 24 of acquisition station 22 respectively，In the 24a of cable connector hole, installation settings has weather proof receptacle base 24c，One of them weather proof receptacle base 24c on first its glass apparatus cabin 24 of the hydrophone array cable 1 main acquisition station of socket connection 21 is also connected with the preamplification gain panel 25 of main acquisition station 21，Second hydrophone array cable 3 socket connection is from one of them weather proof receptacle base 24c its glass apparatus cabin 24 of acquisition station 22 and is connected with the signal acquiring board 26 from acquisition station 22，Another weather proof receptacle base 24c on its glass apparatus cabin 24 of main acquisition station 21 and being connected by watertight cable 30 from another weather proof receptacle base 24c its glass apparatus cabin 24 of acquisition station 22，Connect its glass apparatus cabin 24 of main acquisition station 21 and the watertight cable 30 from its glass apparatus cabin 24 of acquisition station 22 is 21 core watertight cables，Drawing in the middle of this watertight cable 30 can 6 core hydrophone plug 30a of external extension hydrophone，Reserved 2 cores of 6 core hydrophone plug 30a are standby；Another weather proof receptacle base 24c on its glass apparatus cabin 24 of acquisition station 21 connects the signal forward process module 28 of main acquisition station 21, connects the signal forward process module 28 from acquisition station 22 from another weather proof receptacle base 24c its glass apparatus cabin 24 of acquisition station 22.
Concrete, auxiliary load-bearing cable 8 lower end of the first hydrophone array cable 1 surface weave is fixedly connected with load-bearing cable suspension ring 81, auxiliary load-bearing cable 8 upper end of the second hydrophone array cable 3 surface weave is fixedly connected with load-bearing cable suspension ring 81, the main acquisition station 21 of acquisition station 2 and be respectively fixedly connected with OBS suspension ring 20 from acquisition station 22 4 jiaos, main acquisition station 21 and the OBS suspension ring 20 from acquisition station 22 4 jiaos are fixing with the auxiliary load-bearing cable 8 upper end load-bearing cable suspension ring 81 of the auxiliary load-bearing cable 8 lower end load-bearing cable suspension ring 81 of the first hydrophone array cable 1 surface weave and the second hydrophone array cable 3 surface weave respectively by rope to be connected.
Concrete, auxiliary load-bearing cable 8 and the assisting of the second hydrophone array cable 3 surface weave of the first hydrophone array cable 1 surface weave are fixedly connected with the link 11 being available for hanging the optional assembly such as fixing current meter, USBL location equipment, stroboscopic lamp, VHF wireless launcher on load-bearing cable 8.
nullSuch as Fig. 4、Shown in 5，First hydrophone array cable 1 and the second hydrophone array cable 3 are the 21 core watertight Bear high pressure rubber cables that inside is filled with Kafra fiber，First hydrophone array cable 1 and the second hydrophone array cable 3 are axially equidistantly connected to six 4 core hydrophone plug sockets 90 with 25 meters of spacing along it，The socket connection of pressure hydrophone 9 is on described 4 core hydrophone plug sockets 90，21 cores of the first hydrophone array cable 1 and the second hydrophone array cable 3 are divided into two siding 10a、A piece shared shielding line 10b、Six roots of sensation independent signal line 10c、Six roots of sensation independent current source line 10d and six roots of sensation independence ground wire 10e，A piece shared shielding line 10b and six 4 core hydrophone plug socket 90 shares and connects，Six roots of sensation independent signal line 10c、Six roots of sensation independent current source line 10d and six roots of sensation independence ground wire 10e and six 4 core hydrophone plug socket 90 independently connect.
As shown in Figure 6, its signal acquiring board 26 of main acquisition station 21, signal record plate 27 are connected with computer data by tcp data power board 12.
nullThe operation principle of the present invention is: the first hydrophone array cable 1 and the second hydrophone array cable 3 surface weave have auxiliary load-bearing cable 8，Acquisition station 2 is fastened between auxiliary load-bearing cable 8 lower end and auxiliary load-bearing cable 8 upper end of the second hydrophone array cable 3 surface weave of the first hydrophone array cable 1 surface weave，First hydrophone array cable 1 and the second hydrophone array cable 3 are axially equidistantly uniformly distributed respectively along it and are connected to pressure hydrophone 9，First hydrophone array cable 1 and the second hydrophone array cable 3 are axially equidistantly connected to six 4 core hydrophone plug sockets 90 with 25 meters of spacing along it，The socket connection of pressure hydrophone 9 is on described 4 core hydrophone plug sockets 90，21 cores of the first hydrophone array cable 1 and the second hydrophone array cable 3 are divided into two siding 10a、A piece shared shielding line 10b、Six roots of sensation independent signal line 10c、Six roots of sensation independent current source line 10d and six roots of sensation independence ground wire 10e，A piece shared shielding line 10b and six 4 core hydrophone plug socket 90 shares and connects，Six roots of sensation independent signal line 10c、Six roots of sensation independent current source line 10d and six roots of sensation independence ground wire 10e and six 4 core hydrophone plug socket 90 independently connect，One of them weather proof receptacle base 24c on first its glass apparatus cabin 24 of the hydrophone array cable 1 main acquisition station of socket connection 21 is also connected with the preamplification gain panel 25 of main acquisition station 21，Second hydrophone array cable 3 socket connection is from one of them weather proof receptacle base 24c its glass apparatus cabin 24 of acquisition station 22 and is connected with the signal acquiring board 26 from acquisition station 22，Another weather proof receptacle base 24c on its glass apparatus cabin 24 of main acquisition station 21 and being connected by watertight cable 30 from another weather proof receptacle base 24c its glass apparatus cabin 24 of acquisition station 22，The data message gathered from acquisition station 22 is sent to main acquisition station 21，Its signal acquiring board 26 of main acquisition station 21、Signal record plate 27 is connected with computer data by tcp data power board 12，Thus the submarine earthquake of collection and gas hydrates information data can be exported on computer，For submarine earthquake and natural gas hydrate exploration，Have and can carry out the unconventional process of stereopsis geological data for the feature of the hydrate ore bodies such as seabed diffused、Wideband wide-aperture seismic reflection stratum modeling and imaging、The feature of technical support is provided for hydrate identification and reserve forecasting，Realize the target of sea bed gas hydrate resource exploration and pilot production，Meet the general requirement of " subject study provides technical support for Gas Hydrate of The South China Sea resource exploration and environmental evaluation " this project.
For a person skilled in the art, can technical scheme as described above and design, make other various corresponding changes and deformation, and all these change and deformation all should belong within the protection domain of the claims in the present invention.
Claims (9)
- null1. the vertical cable seismic acquisition configuration of multinode OBS，It is characterized in that: include the first hydrophone array cable (1)、Acquisition station (2)、Second hydrophone array cable (3)、Location floating drum (4)、Buoyancy aid (5)、Acoustic releaser (6) and counterweight anchor (7)，Described first hydrophone array cable (1) and the second hydrophone array cable (3) surface weave have auxiliary load-bearing cable (8)，First hydrophone array cable (1) and the second hydrophone array cable (3) are axially equidistantly uniformly distributed respectively along it and are connected to pressure hydrophone (9)，Acquisition station (2) is fastened between auxiliary load-bearing cable (8) lower end of the first hydrophone array cable (1) surface weave and auxiliary load-bearing cable (8) upper end of the second hydrophone array cable (3) surface weave，Auxiliary load-bearing cable (8) upper end of the first hydrophone array cable (1) surface weave has been fixedly connected sequentially location floating drum (4) and buoyancy aid (5)，Auxiliary load-bearing cable (8) lower end of the second hydrophone array cable (3) surface weave has been fixedly connected sequentially buoyancy aid (5)、Acoustic releaser (6) and counterweight anchor (7)；nullAcquisition station (2) includes main acquisition station (21) and from acquisition station (22)，Main acquisition station (21) and being arranged on fixing bracket (23) from acquisition station (22) horizontal juxtaposition，Main acquisition station (21) includes glass apparatus cabin (24)、Preamplification gain panel (25)、Signal acquiring board (26)、Signal record plate (27)、Signal forward process module (28) and power supply control administrative unit (29)，Preamplification gain panel (25)、Signal acquiring board (26)、Signal record plate (27)、Signal forward process module (28) and power supply control administrative unit (29) and are mounted in glass apparatus cabin (24)，Preamplification gain panel (25) connects signal acquiring board (26)，Signal acquiring board (26) connects signal record plate (27)，Signal acquiring board (26) and signal record plate (27) connect signal forward process module (28) respectively，Preamplification gain panel (25) and signal record plate (27) control administrative unit (29) with power supply respectively and are connected，The glass apparatus cabin (24) of main acquisition station (21) is built-in is provided with three-component geophone (241)，Three-component geophone (241) connects preamplification gain panel (25)；Glass apparatus cabin (24) is included from acquisition station (22), preamplification gain panel (25), signal acquiring board (26), signal forward process module (28) and power supply control administrative unit (29), preamplification gain panel (25), signal acquiring board (26), signal forward process module (28) and power supply control administrative unit (29) and are mounted in glass apparatus cabin (24), power supply controls administrative unit (29) and connects signal acquiring board (26), signal acquiring board (26) connects preamplification gain panel (25), preamplification gain panel (25) connects signal forward process module (28)；nullMain acquisition station (21) and offer two cable connector holes (24a) and a vacuum gas filling hole (24b) from the glass apparatus cabin (24) of acquisition station (22) respectively，Cable connector hole (24a) interior installation settings has weather proof receptacle base (24c)，One of them weather proof receptacle base (24c) on its glass apparatus cabin (24) of the first main acquisition station of hydrophone array cable (1) socket connection (21) is also connected with the preamplification gain panel (25) of main acquisition station (21)，Second hydrophone array cable (3) socket connection is from one of them the weather proof receptacle base (24c) its glass apparatus cabin (24) of acquisition station (22) and is connected with the signal acquiring board (26) from acquisition station (22)，Another weather proof receptacle base (24c) on its glass apparatus cabin (24) of main acquisition station (21) and being connected by watertight cable (30) from another weather proof receptacle base (24c) its glass apparatus cabin (24) of acquisition station (22)，Another weather proof receptacle base (24c) on its glass apparatus cabin (24) of acquisition station (21) connects signal forward process module (28) of main acquisition station (21)，Signal forward process module (28) from acquisition station (22) is connected from another weather proof receptacle base (24c) its glass apparatus cabin (24) of acquisition station (22).
- null2. the vertical cable seismic acquisition configuration of multinode OBS as claimed in claim 1，It is characterized in that: auxiliary load-bearing cable (8) lower end of described first hydrophone array cable (1) surface weave is fixedly connected with load-bearing cable suspension ring (81)，Auxiliary load-bearing cable (8) upper end of the second hydrophone array cable (3) surface weave is fixedly connected with load-bearing cable suspension ring (81)，The main acquisition station (21) of acquisition station (2) and be respectively fixedly connected with OBS suspension ring (20) from acquisition station (22) corner，Main acquisition station (21) and the OBS suspension ring (20) from acquisition station (22) corner are connected by rope is fixing with auxiliary load-bearing cable (8) upper end load-bearing cable suspension ring (81) of auxiliary load-bearing cable (8) lower end load-bearing cable suspension ring (81) of the first hydrophone array cable (1) surface weave and the second hydrophone array cable (3) surface weave respectively.
- null3. the vertical cable seismic acquisition configuration of multinode OBS as claimed in claim 1，It is characterized in that: described first hydrophone array cable (1) and the second hydrophone array cable (3) are the 21 core watertight Bear high pressure rubber cables that inside is filled with Kafra fiber，First hydrophone array cable (1) and the second hydrophone array cable (3) are axially equidistantly connected to six 4 cores hydrophone plug socket (90) with 25 meters of spacing along it，Pressure hydrophone (9) socket connection is on described 4 cores hydrophone plug socket (90)，21 cores of the first hydrophone array cable (1) and the second hydrophone array cable (3) are divided into two sidings (10a)、A piece shared shielding line (10b)、Six roots of sensation independent signal line (10c)、Six roots of sensation independent current source line (10d) and six roots of sensation independence ground wire (10e)，A piece shared shielding line (10b) shares with six 4 cores hydrophone plug socket (90) and is connected，Six roots of sensation independent signal line (10c)、Six roots of sensation independent current source line (10d) and six roots of sensation independence ground wire (10e) are independently connected with six 4 cores hydrophone plug socket (90).
- 4. the vertical cable seismic acquisition configuration of multinode OBS as claimed in claim 1 or 2, it is characterized in that: auxiliary load-bearing cable (8) of described first hydrophone array cable (1) surface weave and auxiliary load-bearing cable (8) of the second hydrophone array cable (3) surface weave are six roots of sensation stainless steel cable, every stainless steel cable is twisted mutually by 304 stainless steel silks that 10 diameters are 1mm and is formed.
- 5. the vertical cable seismic acquisition configuration of multinode OBS as claimed in claim 1 or 2, it is characterised in that: auxiliary load-bearing cable (8) of described first hydrophone array cable (1) surface weave and be fixedly connected with the link (11) being available for hanging the optional assembly such as fixing current meter, USBL location equipment, stroboscopic lamp, VHF wireless launcher in auxiliary load-bearing cable (8) of the second hydrophone array cable (3) surface weave.
- 6. the vertical cable seismic acquisition configuration of multinode OBS as claimed in claim 1, it is characterized in that: its glass apparatus cabin (24) of the main acquisition station of described connection (21) and the watertight cable (30) from its glass apparatus cabin (24) of acquisition station (22) are 21 core watertight cables, draw in the middle of this watertight cable (30) can 6 cores hydrophone plug (30a) of external extension hydrophone, reserved 2 cores of this 6 core hydrophone plug (30a) are standby.
- 7. the vertical cable seismic acquisition configuration of multinode OBS as claimed in claim 1, it is characterised in that: described its signal acquiring board of main acquisition station (21) (26), signal record plate (27) are connected with computer data by tcp data power board (12).
- null8. the vertical cable seismic acquisition configuration of multinode OBS as described in claim 1 or 2 or 3，It is characterized in that: it is 0.2 square millimeter that described first hydrophone array cable (1) and second hydrophone array cable (3) its core section are amassed，Cable inner conductor adopts 19/0.16 tin-plating round copper wire、Conductor diameter is 1.2mm、The maximum D.C. resistance of conductor when 20 DEG C≤150 Ω/km，Between cable internal core wire and heart yearn and shielding line, insulation resistance is at 20 DEG C、During 250VDC >=500M Ω，Stand to exchange 1500V/1min between cable internal core wire and heart yearn with shielding line not puncture，Cable insulation adopts fluoroplastics、Insulation nominal thickness is 0.5mm、Outer insulation diameter is 2mm，Cable shield tinned wird weaves、Count is not less than 85%，Cable jacket is neoprene、Thickness is 4.0mm，Cable tensile strength >=150kg，Weight≤90kg in cable air、Weight≤40kg in water.
- 9. the vertical cable seismic acquisition configuration of multinode OBS as described in claim 1 or 3, it is characterized in that: the outer layer vulcanization of rubber of described pressure hydrophone (9) becomes flat olive shape, the working band of pressure hydrophone (9) is 2～20KHz, sound pressure sensitivity is-160dB (± 1.5dB) (0dB=1V/ μ Pa), dynamic range >=120dB, change of sensitivity ranges for≤every 100 meters of degree of depth reduction (0～5MPa) of 1.5dB/, the every 10 DEG C of temperature of≤1.5dB/ reduce, ± 2.5dB/ working band scope rises and falls, internal preamplifier amplification is 20 times, preamplifier is voltage-type, supply voltage is+12VDC, supply current≤10mA.
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| CN108680949B (en) * | 2018-08-02 | 2024-01-26 | 自然资源部第二海洋研究所 | Quick connection and anti-collision device of hydrophone on Kevlar pull rope |
| CN108897063A (en) * | 2018-08-09 | 2018-11-27 | 青岛海洋地质研究所 | A kind of seabed bubble generation simulator |
| CN108897063B (en) * | 2018-08-09 | 2023-12-22 | 青岛海洋地质研究所 | Submarine bubble generation simulation device |
| US11327186B2 (en) | 2018-09-12 | 2022-05-10 | The First Institute Of Oceanography, Mnr | Submarine seismic monitoring apparatus and system based on submarine internet of things |
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