CN107677772A - Methane gradiometry system in ocean or lake-bottom deposit - Google Patents

Methane gradiometry system in ocean or lake-bottom deposit Download PDF

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Publication number
CN107677772A
CN107677772A CN201710845946.1A CN201710845946A CN107677772A CN 107677772 A CN107677772 A CN 107677772A CN 201710845946 A CN201710845946 A CN 201710845946A CN 107677772 A CN107677772 A CN 107677772A
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CN
China
Prior art keywords
methane
lake
ocean
gradiometry
deposit
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Application number
CN201710845946.1A
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Chinese (zh)
Inventor
程思海
王飞
何赵
杨天邦
王虎
陈晨
王金莲
孙程
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GUANGDONG ENVIRONMENTAL PROTECTION ENGINEERING RESEARCH & DESIGN INSTITUTE
Tongji University
Guangzhou Marine Geological Survey
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GUANGDONG ENVIRONMENTAL PROTECTION ENGINEERING RESEARCH & DESIGN INSTITUTE
Tongji University
Guangzhou Marine Geological Survey
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Application filed by GUANGDONG ENVIRONMENTAL PROTECTION ENGINEERING RESEARCH & DESIGN INSTITUTE, Tongji University, Guangzhou Marine Geological Survey filed Critical GUANGDONG ENVIRONMENTAL PROTECTION ENGINEERING RESEARCH & DESIGN INSTITUTE
Priority to CN201710845946.1A priority Critical patent/CN107677772A/en
Publication of CN107677772A publication Critical patent/CN107677772A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0027General constructional details of gas analysers, e.g. portable test equipment concerning the detector
    • G01N33/0036General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
    • G01N33/0057Warfare agents or explosives
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004Gaseous mixtures, e.g. polluted air
    • G01N33/0009General constructional details of gas analysers, e.g. portable test equipment
    • G01N33/0062General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Medicinal Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Combustion & Propulsion (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention discloses the methane gradiometry system in a kind of ocean or lake-bottom deposit, including at least methane test device in deposit, deck control system, signal transmission system, Subsea Control Systems, than pouring weight and the detection post than pouring weight is fixedly connected on;The Subsea Control Systems are electrically connected with by the signal transmission system and the deck control system;The methane test device is multiple, and multiple methane test devices are fixedly installed along the length direction of the detection post respectively, and the methane test device is electrically connected with by cable and the Subsea Control Systems.The present invention is simple in construction, measurement result is reliable and stable, workable.

Description

Methane gradiometry system in ocean or lake-bottom deposit
Technical field
The present invention relates to a kind of test system, more particularly to a kind of it is used to test in the deposit of seabed or lake-bottom The measuring system of methane gradient.
Background technology
In the deep of some deposits in seabed or lake, the ore deposits such as gas hydrates, oil and/or natural gas have been buried Hide, typically all contain substantial amounts of methane gas in these mineral reserve.In the seriously polluted and lake-bottom of eutrophication deposit In, due to the rotten decomposition of organic matter, it can also produce substantial amounts of methane gas.Due to the small volume of methane molecule, methane gas It is easy to spread and migrate into the deposit of surrounding from submarine mine Tibetan area and lake pollution source.Generally, in high pressure and Under the conditions of low-temperature physics, methane spread and migration process in, can be filled in the space between sedimentary particle, and containing The regularity of distribution successively decreased in gradient in amount.
Therefore, it is distributed by measuring the gradient of methane in seabed and lake sediment, it can be determined that methane migration direction, enter And speculate the depth of seabed mining deposits, assess lake pollution degree, for ocean gas hydrate investigation, Marine oil and gas resource Detect and lake environment is investigated and assessed and provides fast and efficiently GEOCHEMICAL EVIDENCE.
At present, it is usually individually to extract different layers to the method for testing of the methane gradient in Yu Haiyang and lake sediment Then the sample extracted is respectively placed in a confined space, thing to be deposited by the sediment sample of position to laboratory on ship In methane release to the methane content after confined space, tested in confined space, then according in the deposit of different layers position Methane content calculate deposit in methane gradient.
But during aforesaid operations, it is most in deposit due to the change of the temperature and pressure condition of sample Methane all escaped, very big error in measurement result and deposit between the actual content of methane be present.And with me The continuous development of state's economic strength and science and technology, country is just in seabeds such as Efforts To Develop gas hydrates, oil, natural gases Mineral Resource Survey, bury the survey of methane gradient in the deposit of the mineral reserve such as gas hydrates, oil and/or natural gas Amount, investigation and ocean, lake environment investigation for the hydrate, oil and gas deposit in seabed, tool are of great significance.
Therefore, those skilled in the art need badly research it is a kind of it is simple in construction, measurement result is reliable and stable, workable Methane gradiometry system in deposit.
The content of the invention
In view of the drawbacks described above of prior art, the present invention propose it is a kind of it is simple in construction, measurement result is reliable and stable, can Methane gradiometry system in the deposit of strong operability.
Another object of the present invention, it is to provide the survey that a kind of measurement result is accurately used to measure methane content in deposit Trial assembly is put.
To achieve the above object, the invention provides the methane gradiometry in a kind of ocean or lake-bottom deposit System, it is characterised in that including at least methane test device, deck control system, signal transmission system, underwater control in deposit System processed, than pouring weight and it is fixedly connected on the detection post than pouring weight;The Subsea Control Systems are passed by the signal Defeated system is electrically connected with the deck control system;The methane test device is multiple, multiple methane test devices It is fixedly installed along the length direction of the detection post, the methane test device is electrical by cable and the Subsea Control Systems Connection.
In some embodiments, the signal transmission system is wirerope.
In some embodiments, the methane test device includes pressure sensor, methane transducer and gas Cabin, the pressure sensor are arranged in the gas tank with the methane transducer;It is additionally provided with and passes through on the gas tank The inlet channel of air inlet electromagnetic valve control and the outlet passageway controlled by air outlet valve, are provided with the outside of the outlet passageway Waterproof ventilative layer;The air inlet electromagnetic valve, the pressure sensor and the methane transducer are controlled by cable and the deck System processed is electrically connected with.
In some embodiments, it is provided with the interface docked with vavuum pump outside the outlet passageway.
In some embodiments, the air outlet valve is hand-operated valve.
In some embodiments, the waterproof ventilative layer is from the side away from the gas tank to close to the gas The side in body cabin is followed successively by the one or several kinds in metal screen, miillpore filter, waterproof and breathable barrier film and stainless steel sintering felt.
In some embodiments, the bottom of the detection post is taper.
Beneficial effects of the present invention:
The said structure design of the present invention, the difference of detection post is fixed on due to multiple methane test devices being respectively perpendicular Highly, so as in methane test device without departing from residing home position in the case of, detected methane content is led to Cable is crossed to deck control system, the methane distribution situation of ocean or lake-bottom different height is surveyed in real time Amount, measurement result is accurate, reliable and stable.
The said structure design of the present invention, by the reading of methane data in gas tank is in institute by deck control system Detecting position carries out in-situ test, avoids and is brought in the prior art by needing to measure again after sample extraction to deck Error, ensure that the reliability of testing result.
In addition, using above-mentioned structure design, deck control system is electrically connected with Subsea Control Systems by wirerope, first Alkane test device is electrically connected with Subsea Control Systems, is avoided because underwater more cables are connected with deck control system simultaneously Caused inconvenience, reduces space, improves installation effectiveness.
Design, concrete structure and the caused technique effect of the present invention are described further below with reference to accompanying drawing, with It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 be one embodiment of the invention deposit in methane gradiometry system structural representation.
Fig. 2 is the structural representation of methane test device in Fig. 1.
Embodiment
As depicted in figs. 1 and 2, the invention provides the methane gradiometry in a kind of ocean or lake-bottom deposit System, as shown in figure 1, the system includes methane test device 1, deck control system 2 in deposit, as signal transmission system And the wirerope 3 of load bearing system, Subsea Control Systems 4, than pouring weight 5 and it is fixedly connected on detection post 7 than pouring weight.Wherein, water Lower control system 4 is electrically connected with by wirerope 3 and deck control system 2;Methane test device 1 is four, four methane tests Device 1 is respectively along the length direction fixed setting of detection post 7, that is, be respectively perpendicular the different height for being fixed on detection post.First Alkane test device 1 is electrically connected with by cable and Subsea Control Systems 4.
Because deck control system is electrically connected with Subsea Control Systems by wirerope, methane test device and underwater control System is electrically connected with, and is avoided the inconvenience due to underwater more cables are connected with deck control system simultaneously caused by, is reduced Space, improve installation effectiveness.
For the ease of the lifting of measuring system, hook 6 is additionally provided with the top of system.
In other embodiments, the quantity of methane test device can be increased and decreased according to specific circumstances.
Above-mentioned methane gradiometry system, it is fixed on detection post not due to multiple methane test devices being respectively perpendicular With height, in the case of in methane test device without departing from residing home position, to ocean or lake-bottom not Level methane distribution situation is measured, and detected methane content is surveyed by transmitting to deck control system 2 It is accurate to measure result, it is reliable and stable.
It is cone by the end set for detecting post 7 to reduce resistance when detection post 7 probes into ocean or lake-bottom Shape.
As shown in Fig. 2 the methane test device 1 of the present embodiment includes pressure sensor 19, methane transducer 12 and gas Cabin 13, pressure sensor 19 are arranged in gas tank 13 with methane transducer 12, the pressure being respectively used in detection gas cabin 13 And methane content.
As shown in Fig. 2 13 it is additionally provided with the inlet channel 14 controlled by air inlet electromagnetic valve 15 on gas tank and passes through The outlet passageway 17 that air outlet valve 18 controls, the outside of inlet channel 14 are provided with waterproof ventilative layer 16, and the waterproof ventilative layer 16 can To prevent S & W from entering in gas tank 13;Air inlet electromagnetic valve 15 is electrical by cable and the deck control system 2 in Fig. 1 Connection.
When specifically used, methane transducer 12, air inlet electromagnetic valve 15 and pressure sensor 19 pass through cable and underwater control System 4 is electrically connected with, and methane transducer 12 and pressure sensor 19 can be arrived detected real-time data transmission by cable Deck control system, deck control system control opening and the closing of air inlet electromagnetic valve 15 by cable 11.
During methane test device use, because the reading of methane data in gas tank is by deck control system Carried out in deposit situ, avoid and brought in the prior art by needing to measure again after sample extraction to deck Error, ensure that the reliability of testing result.
For the ease of extracting the vacuum in gas tank before system use, it is provided with and vavuum pump pair on outlet passageway 17 The interface connect.
For simplied system structure while realization uses function, air outlet valve 18 is used into hand-operated valve.
In the present embodiment, waterproof ventilative layer is followed successively by from the side away from gas tank 13 to the side close to gas tank 13: Metal screen, miillpore filter, waterproof and breathable barrier film and stainless steel sintering felt, when specifically used, according to the marine bottom detected Or the different situations of lake-bottom, it can increase and decrease.
The concrete application situation of the present invention is as follows:
First, methane test device is debugged.The air inlet electromagnetic valve 15 of methane test device 1 is closed above deck, Manual air outlet valve 18 is opened, vavuum pump is connected with outlet passageway 17, passing through pressure by being arranged at the interface of outlet passageway 17 Force snesor 19 monitors the vacuum state in gas tank 13, when the vacuum state in gas tank 13 meets to require, closes outlet Hand-operated valve 18, removes vavuum pump.Using foregoing method, each methane test device 1 is debugged.
Secondly, the methane test device debugged is in turn secured to detect by length direction of the clip along detection post 7 On post 7, wirerope 3 is electrically connected between deck control system 2 and Subsea Control Systems 4, and by each methane test device 1 It is electrically connected with respectively by cable and Subsea Control Systems 4.Now, methane transducer 12 and pressure sensor 19 can pass through cable Real-time data transmission to deck control system 2, deck control system 2 can also directly be controlled magnetic valve 15 by line by cable Open and close.
Then, whole detecting system is hung on hook 6, transfers and insert in deposit to be detected by winch, led to Cross deck control system 2 and open air inlet electromagnetic valve 15, deposit and gas tank 13 is in together with state.Inside and outside gas tank Gas concentration is different, and in the presence of gas pressure difference, the gas in deposit can be diffused into gas through waterproof ventilative layer 16 In cabin 13, when the numerical stability of pressure sensor 19, i.e., the gas in gas and deposit in gas tank 13 reaches dynamic During balance, air inlet electromagnetic valve 15 is closed by deck control system 2, now the methane concentration shown by methane transducer, be Methane concentration in gas tank 13.According to Henry Theorem, methane content is straight in the methane concentration and outside deposit in gas tank Correlation is connect, therefore the methane content in the deposit where the methane test device can be calculated according to the theorem.
Similarly, multiple methane testers 1 of different height on post 7 are detected by being arranged at, you can measurement different layers position Methane content in deposit, so as to calculate the methane gradient in this erect-position deposit.
After methane content in the deposit of certain layer of position has detected, detecting system is extracted on deck, cleaning or more Waterproof ventilative layer 16 is changed, after being vacuumized to gas tank 13, you can carry out measurement next time.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without Creative work can is needed to make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical scheme, all should be in the protection domain being defined in the patent claims.

Claims (7)

1. the methane gradiometry system in a kind of ocean or lake-bottom deposit, it is characterised in that including at least deposition Methane test device in thing, deck control system, signal transmission system, Subsea Control Systems, than pouring weight and it is fixedly connected on The detection post than pouring weight;The Subsea Control Systems are electrical by the signal transmission system and the deck control system Connection;The methane test device is multiple, and multiple methane test devices are consolidated along the length direction of the detection post respectively Fixed to set, multiple methane test devices are electrically connected with by cable and the Subsea Control Systems respectively.
2. the methane gradiometry system in ocean as claimed in claim 1 or lake-bottom deposit, it is characterised in that The signal transmission system is wirerope.
3. the methane gradiometry system in ocean as claimed in claim 2 or lake-bottom deposit, it is characterised in that The methane test device includes pressure sensor, methane transducer and gas tank, and the pressure sensor passes with the methane Sensor is arranged in the gas tank;The inlet channel controlled by air inlet electromagnetic valve is additionally provided with the gas tank and is led to The outlet passageway of air outlet valve control is crossed, waterproof ventilative layer is provided with the outside of the outlet passageway;It is the air inlet electromagnetic valve, described Pressure sensor and the methane transducer are electrically connected with by cable and the Subsea Control Systems.
4. the methane gradiometry system in ocean as claimed in claim 3 or lake-bottom deposit, it is characterised in that The interface docked with vavuum pump is provided with outside the outlet passageway.
5. the methane gradiometry system in ocean as claimed in claim 3 or lake-bottom deposit, it is characterised in that The air outlet valve is hand-operated valve.
6. the methane gradiometry system in ocean or lake-bottom deposit as described in any one of claim 2 to 5, its It is characterised by, the waterproof ventilative layer is followed successively by metal from the side away from the gas tank to the side close to the gas tank One or several kinds in filter screen, miillpore filter, waterproof and breathable barrier film and stainless steel sintering felt.
7. the methane gradiometry system in ocean as claimed in claim 6 or lake-bottom deposit, it is characterised in that The bottom of the detection post is taper.
CN201710845946.1A 2017-09-19 2017-09-19 Methane gradiometry system in ocean or lake-bottom deposit Pending CN107677772A (en)

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CN1723399A (en) * 2002-12-10 2006-01-18 加利福尼亚大学董事会 System and method for hydrocarbon reservoir monitoring using controlled-source electromagnetic fields
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CN205175906U (en) * 2015-12-04 2016-04-20 山东省科学院海洋仪器仪表研究所 Seabed cold spring dissolved gas normal position measuring device
CN105842005A (en) * 2016-04-01 2016-08-10 山东省科学院海洋仪器仪表研究所 Apparatus for acquisition of marine sediment porewater and on-line in-situ detection of gas in porewater, and control method thereof
CN207215789U (en) * 2017-09-19 2018-04-10 广州海洋地质调查局 Methane gradiometry system in ocean or lake-bottom deposit

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10025547C1 (en) * 2000-05-23 2001-12-06 Stiftung A Wegener Inst Polar Automatic deep-sea probe provides vertical measuring profile of sea water parameters by movement between measuring points at different depths
CN1723399A (en) * 2002-12-10 2006-01-18 加利福尼亚大学董事会 System and method for hydrocarbon reservoir monitoring using controlled-source electromagnetic fields
CN1975328A (en) * 2006-12-08 2007-06-06 国家海洋局第二海洋研究所 Multifrequency submarine acoustic in-situ testing system and method
CN201016731Y (en) * 2006-12-08 2008-02-06 国家海洋局第二海洋研究所 Multi-frequency sea-bottom acoustic original position testing system
CN201396147Y (en) * 2009-04-30 2010-02-03 中国石油天然气集团公司 Detector for subsurface oil-water interface or gas-liquid interface
US20110029273A1 (en) * 2009-07-10 2011-02-03 Schlumberger Technology Corporation Method and apparatus to monitor reformation and replacement of co2/ch4 gas hydrates
CN102221485A (en) * 2011-04-15 2011-10-19 同济大学 Submarine sediment interstitial water in-situ acquisition system
CN102297789A (en) * 2011-05-27 2011-12-28 同济大学 Original position time-sharing acquisition system for gas in deep seawater
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CN205175906U (en) * 2015-12-04 2016-04-20 山东省科学院海洋仪器仪表研究所 Seabed cold spring dissolved gas normal position measuring device
CN105842005A (en) * 2016-04-01 2016-08-10 山东省科学院海洋仪器仪表研究所 Apparatus for acquisition of marine sediment porewater and on-line in-situ detection of gas in porewater, and control method thereof
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