CN102445371B - Integrated device for in-situ generation and decomposition of hydrate sediments and permeability measurement thereof - Google Patents
Integrated device for in-situ generation and decomposition of hydrate sediments and permeability measurement thereof Download PDFInfo
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- CN102445371B CN102445371B CN 201110353136 CN201110353136A CN102445371B CN 102445371 B CN102445371 B CN 102445371B CN 201110353136 CN201110353136 CN 201110353136 CN 201110353136 A CN201110353136 A CN 201110353136A CN 102445371 B CN102445371 B CN 102445371B
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- 239000013049 sediment Substances 0.000 title claims abstract description 53
- 230000035699 permeability Effects 0.000 title claims abstract description 38
- 238000000354 decomposition reaction Methods 0.000 title claims abstract description 20
- 238000005259 measurement Methods 0.000 title abstract description 7
- 238000011065 in-situ storage Methods 0.000 title abstract 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000007789 gas Substances 0.000 claims abstract description 25
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000002000 scavenging effect Effects 0.000 claims abstract description 14
- 238000003825 pressing Methods 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 230000009467 reduction Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000004821 distillation Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000011160 research Methods 0.000 abstract description 7
- 230000000704 physical effect Effects 0.000 abstract description 5
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- 238000007906 compression Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000013500 data storage Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract 2
- -1 natural gas hydrates Chemical class 0.000 abstract 2
- 238000005553 drilling Methods 0.000 abstract 1
- 238000005065 mining Methods 0.000 abstract 1
- 238000010223 real-time analysis Methods 0.000 abstract 1
- 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 20
- 239000012153 distilled water Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000004576 sand Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000004927 clay Substances 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 241001269238 Data Species 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000036571 hydration Effects 0.000 description 2
- 238000006703 hydration reaction Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 238000012827 research and development Methods 0.000 description 1
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- 229920006395 saturated elastomer Polymers 0.000 description 1
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Abstract
An integrated device for in-situ generation and decomposition of hydrate sediments and permeability measurement thereof belongs to the field of measuring the basic physical properties of natural gas hydrates. The device mainly comprises a reaction kettle, a cold store, a scavenging leakage detection system, a temperature control system, a gas supply system, a water supply system, a permeability measurement system and a computer data acquisition system. A compression type design is adopted for the reaction kettle so that different stress states can be simulated. The device has the following advantages that: the cold store and a constant temperature bath are capable of realizing quick and accurate control of temperatures; the gas supply system is quick and convenient to increase and preserve pressures; the data acquisition system has the functions of data storage and real-time analysis; the temperatures, pressures, historical sedimentary conditions and stress states of different hydrate sediment reservoirs can be simulated; and a hydrate sediment sample can be integrally taken out in a relatively convenient manner, and can be directly put in a low-temperature high-pressure three-axis tester for the mechanical characteristic testing research. Besides, the device plays an important role in guiding the drilling and safe mining of natural gas hydrates.
Description
Technical field
The present invention relates to a kind ofly for the generation of hydrate sediment original position and decomposition and permeability survey integrated apparatus thereof, belong to gas hydrate Basic Physical Properties fields of measurement.
Background technology
Gas hydrate have distribute wide, stock number is large, it is shallow to bury, energy density is high, the characteristics such as clean, is the unknown energy depot of undeveloped maximum still on the earth, is considered to the new forms of energy that 21 century is optimal, have the business development prospect.The safe working of gas hydrate is subject to the extensive attention of various countries scientist and government, has become the new study hotspot of industrial gas oil, and might produce far-reaching influence to the development of environmental science and energy industry.In May, 2007, China formally collects the gas hydrate sample at the Shenhu sea area of Northern Part of South China Sea, becomes the 4th country that collects the gas hydrate sample by national level research and development plan after the U.S., Japan, India.In November, 2008, China finds the hydrate sample at the Qinghai Qilianshan Area.This exists Gas Hydrate that strong evidence is provided for China marine site and permafrost region.The energy problem that China was adopted and solved to the Basic Physical Properties of researching natural gas hydrate, mechanical property to the standard-sized sheet of hydrate is of great immediate significance.
It is larger that the hydrate sediment core of original state obtains difficulty, and cost is high.In the boring and coring process, the variation of load can cause the disturbance of sediment structure; The change of temperature and pressure can make partially hydrated thing decompose.The core of obtaining can not react the hydrate sediment reservoir conditions really.And laboratory artificial synthesized hydrate sediment sample has the characteristics such as parameter controllability, cost be low.Under lab, the parameter data such as underground heat, landforms and mode of deposition according to China marine site and frozen soil zone, we can control sedimental grain composition, initial porosity, the parameters such as hydrate generation temperature, pressure and saturation degree, and then in simulating nature circle, gas hydrate sediment reservoir environment prepares sample.The experiment parameter that obtains and the actual conditions of reservoir are very approaching, can be used to refer to the safe working of water guide compound.In recent years, domestic and international many research institutions have carried out the sedimental experimental simulation work of gas hydrate, designed and produced many covers hydrate sediment laboratory simulation device, can tentatively reduce and reinvent the natural gas hydrate sediment, and can balance each other in reactor, the measurement of the correlation parameter such as permeability.But the hydrate sediment analogue means of current use can't carry out the compression concretion of sediment skeleton, historical accumulation condition and stress state that can't the real simulation hydrate sediment.And affected by the factor of its size and design aspect, the hydrate sediment sample that generates can't wholely take out, or gets its part and just can put into the cryogenic high pressure three-axis tester through operations such as cooled with liquid nitrogen, lathe processing and carry out the further research work such as mechanical characteristic.
Summary of the invention
In order to overcome above-mentioned problems of the prior art, the invention provides the generation of a kind of hydrate sediment original position and decomposition and permeability survey integrated apparatus thereof.This device can simulating natural condition under the parameter such as temperature, pressure, deposition historical conditions, saturation degree, factor of porosity of gas hydrate reservoir, can carry out generation and the decomposition of hydrate, can carry out the isoparametric measurement of permeability.The taking-up that the hydrate sediment sample energy of the corresponding size that obtains is more convenient is also put into the cryogenic high pressure three-axis tester and is carried out the further researchs such as Mechanics Performance Testing.Exploration and safe working to China marine site and the regional gas hydrate of frozen soil play important directive function.
The present invention solves the problems of the technologies described above the technical scheme that adopts: the generation of a kind of hydrate sediment original position and decomposition and permeability survey integrated apparatus thereof, it mainly comprises a reactor, scavenging leak detection system, temperature control system, air supply system, water system, permeability survey system and computer data acquisition system.Described reactor, scavenging leak detection system, temperature control system, air supply system, water system and the permeability survey system integration are arranged in freezer; Described reactor adopts high pressure-resistance structure, places lower thermal insulation board between chassis and base, and is fixedly connected with bolt; The first seepage flow pad is placed in center at base; The inner cover cylinder adopts fabricated structure, is placed on the base medium position; Exterior cover pipeline is enclosed within outside the inner cover cylinder, is clearance fit each other, and seals by the first O-ring seal between exterior cover pipeline and base; The cooling dome jacket casing is fixed on shaft collar outside exterior cover pipeline, and is placed on equally on base; Pressing plate is placed on inner cover cylinder and exterior cover pipeline, seals by the second O-ring seal between pressing plate and exterior cover pipeline, and with connecting link, pressing plate and base is fixed; Lifting nut and lifting bolt are housed on pressing plate; Piston and inner cover cylinder, exterior cover pipeline, pressing plate and base form the pressure chamber of sealing, seal by the 3rd O-ring seal between piston and pressing plate; The second seepage flow pad is installed in the bottom of piston; Upper thermal insulation board is placed on the top of piston.
Described base is provided with the base pipeline, is connected with air supply system, water system, and second pressure unit is set; Described cooling dome cylinder is connected with temperature control system by the pipe joint on shaft collar; Described piston is provided with temperature sensor mounted piston hole and piston tube pipeline joint, and piston tube pipeline joint and scavenging leak detection system are connected with the permeability survey system, and first pressure unit is set; Be connected a pressure difference transmitter between described base pipeline and described piston tube pipeline joint; Described piston hole bottom is provided with temperature sensor.
Described scavenging leak detection system mainly comprises a nitrogen cylinder, is connected with the piston tube pipeline joint through the first reduction valve and the first non-return valve.
Described temperature control system mainly comprises a calibration cell, an ebullator, is connected with shaft collar pipe joint on described shaft collar.
Described air supply system mainly comprises a constant pressure pump that is connected with the methane gas cylinder through the second reduction valve, and constant pressure pump is connected with the base pipeline through the second non-return valve.
Described water system mainly comprises a distillation water pot and an electric metering pump, and electric metering pump is connected with the base pipeline; A graduated cylinder is connected with the piston tube pipeline joint; A vacuum pump is connected with the piston tube pipeline joint.
Described permeability survey system mainly comprise one reclaim air bag through a flowmeter with is connected a gas-liquid separator and is connected with the piston tube pipeline joint.
Described computer data acquisition system mainly comprises the data acquisition module that a temperature sensor, flowmeter, the first pressure unit, the second pressure unit and differential pressure transmitter adopt electrical connection, and the data that gather is passed to industrial computer process.
The invention has the beneficial effects as follows: the generation of this gas hydrate original position and decomposition and permeability survey integrated apparatus thereof mainly comprise a reactor, freezer, vacuum pump, scavenging leak detection system, temperature control system, air supply system, water system, permeability survey system and computer data acquisition system.The scavenging leak detection system is used for the leak detection process before the experiment beginning, for experiment begins to prepare; Temperature control system is controlled the temperature in hydrate generation and decomposable process; Air supply system is supplied with the high pressure methane gas that hydrate reaction needs in reactor; Water system provides the distilled water of reaction needed in the reactor; The permeability survey system is used for measuring the permeability of hydrate sediment; Computer data acquisition system collecting temperature, pressure etc. detect data.Its advantage is:
1. mixer design pressure is 0～20MPa, and design temperature is-10 ℃～room temperature, can simulating natural condition under temperature, the pressure condition of seabed and frozen soil region gas hydrate reservoir, satisfy shop experiment research needs;
2. the axis of the piston is 100kN to maximum load, and specimen finish is 61.8mm, can carry out compression concretion to sediment, controls the initial density of hydrate sediment sample, the stress state on simulate formation 0-1000m stratum;
3. the inner cover cylinder adopts fabricated structure, the convenient taking-up after the hydrate sediment sample generates, and specimen size meets the triaxial test standard, can directly put into three-axis tester and carry out dynamic characteristic test;
4. freezer and calibration cell can be realized controlling fast and accurately of temperature, satisfy high precision test demand;
5. data acquisition system (DAS) possesses data storage, real time data and image analysis software support;
6. reactor adopts removably, is convenient to after test clean;
7. system cost is relatively cheap;
8. all can simulate with decomposing the generation of the gas hydrate of seabed and frozen soil region, Basic Physical Properties research, exploration and the safe working of gas hydrate played important directive function.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a kind of for the generation of hydrate sediment original position and decomposition and permeability survey integrated apparatus fundamental diagram thereof.
Fig. 2 is a kind of system diagram for the generation of hydrate sediment original position and decomposition and permeability survey integrated apparatus thereof.
Fig. 3 is the structural drawing of reactor.
in figure: 1, reactor, 2, temperature sensor, 3, calibration cell, 4, ebullator, 5, 5a, pressure unit, 6, pressure difference transmitter, 7, data acquisition module, 8, industrial computer, 9, reclaim air bag, 10, 10a, 10b, 10c, 10d, 10e, 10f, 10g, 10h, needle-valve, 11, flowmeter, 12, gas-liquid separator, 13, safety valve, 14, vacuum pump, 15, graduated cylinder, 16, nitrogen cylinder, 17, the first reduction valve, 17a, the second reduction valve, 18, the first non-return valve, 18a, the second non-return valve, 19, the methane gas cylinder, 20, constant pressure pump, 21, the distillation water pot, 22, electric metering pump, 23, freezer, 24, pressure head, 25, upper thermal insulation board, 26, piston, 26a, the piston tube pipeline joint, 26b, piston hole, 27, pressing plate, 28, lifting bolt, 29, the lifting nut, 30, connecting link, 31, shaft collar, 31a, the shaft collar pipe joint, 32, the cooling dome cylinder, 33, exterior cover pipeline, 34, the inner cover cylinder, 35, hydrate sediment, 36, the first seepage flow pad, 36a, the second seepage flow pad, 37, base, 37a, the base pipeline, 38, lower thermal insulation board, 39, the chassis, 40, the first O-ring seal, 40a, the second O-ring seal, 40b, the 3rd O-ring seal.
Embodiment
Figure 1 shows that a kind of fundamental diagram for the generation of hydrate sediment original position and decomposition and permeability survey integrated apparatus thereof, its course of work is: device is not tested after the inspection of scavenging leak detection system is not revealed, air supply system is supplied with methane gas to reactor, and by the Constant Pressure Pump Controlling reacting kettle inner pressure, water system is supplied with distilled water to reactor, freezer and calibration cell are controlled the required temperature of reaction, and the running parameter in course of reaction such as temperature, pressure signal etc. are by computer data acquisition system collection and analysis.After hydrate generated, the permeability that the permeability survey system is used for measuring hydrate sediment maybe can be taken out hydrate sediment and be put into three-axis tester and carry out dynamic characteristic test.
Fig. 2 is a kind of system diagram for the generation of hydrate sediment original position and decomposition and permeability survey integrated apparatus thereof, and the below is illustrated by each systemic-function:
1. the scavenging leak detection system course of work is: nitrogen cylinder 16 can provide leak detection and scavenging gas to whole system through the first reduction valve 17, needle-valve 10e and non-return valve 18.
2. the course of work of temperature control system is: after leak detection is completed, open freezer 23 and carry out the one-level temperature control, suitable environment temperature is provided, temperature controlling range is-10 ℃～room temperature; Then open calibration cell 3 and provide refrigerating fluid through ebullator 4 to cooling dome cylinder 32, and then control 1 temperature in reactor, temperature controlling range is-10 ℃～room temperature.
3. the course of work of air supply system is: methane gas cylinder 19 reaches set pressure and keeps set pressure to constant pressure pump 20 injection methane gass through the second reduction valve 17a and needle-valve 10f, and then constant pressure pump 20 provides the methane gas of set pressure through needle-valve 10g and the second non-return valve 18a to reactor 1.
4. the course of work of water system is: when needing saturated porous media (sediment) in experimentation, first with vacuum pump 14, reactor 1 is vacuumized, then distilling water pot 21 provides distilled water through electric metering pump 22 and needle-valve 10h to reactor 1; Open needle-valve 10b, needle-valve 10d and can carry out drain operation to graduated cylinder 15.
5. the course of work of permeability survey system is: to reactor 1 ventilating methane gas, methane gas enters through reactor 1, needle-valve 10b, needle-valve 10a, gas-liquid separator 12, flowmeter 11 and needle-valve 10 and reclaims air bag 9 constant pressure pump 20 by needle-valve 10g and non-return valve 18a; Obtain temperature signal, the first pressure unit 5, the second pressure unit 5a, the pressure signal of pressure difference transmitter 6 and the flow signal of flowmeter 11 of temperature sensor 2 by data acquisition system (DAS), in conjunction with the basic datas such as viscosity of cross-sectional area, height and the methane gas gas of hydrate sediment 35, then utilize the permeability of Darcy's law calculated hydration sediment 35.
6. the course of work of computer data acquisition system is: temperature sensor 2, the first pressure unit 5, the second pressure unit 5a, pressure difference transmitter 6 collect the simulating signals such as pressure of reactor 1 temperature and up and down pipe joint thereof, these signals are transferred to data acquisition module 7 to carry out data and processes and to obtain digital signal, and digital signal is imported into and carried out that data show and storage after industrial computer 8 again.
7. other work systems: safety valve 13 can be kept system and carry out in the safe pressure scope.
Figure 3 shows that the structural drawing of reactor.First shaft collar 31 and cooling dome cylinder 32 are placed on base 37, then exterior cover pipeline 33 and inner cover cylinder 34 are placed in cooling dome cylinder 32, be placed with in the middle of base 37 and prevent that hydrate sediment from entering the first seepage flow pad 36 of pipeline; After placing, a certain amount of clay or sand are put into inner cover cylinder 34, then place the seepage flow pad at the upper surface of clay or sand equally and prevent that hydrate sediment from entering and blocking pipe.With connecting link 30, pressing plate 27 is fixed on the upper surface of exterior cover pipeline 33, prevents from reacting gas reactor or distilled water and overflow from revealing between base 37 and exterior cover pipeline 33 and between pressing plate 27 and exterior cover pipeline 33.Piston 26 is installed, and upper thermal insulation board 25 with pressure head 24 compression pistons 26, makes clay or the sand inserted reach predetermined initial packing, simulates specific stress state, and keeps this stress state.At last the pipe joint of reactor base 37 and piston 26 is prepared test by access piping system shown in Figure 2.
Above-mentioned detection device has been carried out the original position generation of gas hydrate and the measurement test of decomposition and permeability thereof.Test methane gas used and derive from Dalian Da Te gas company limited, purity 99.9%.Water used is distilled water.First reactor 1 use distilled water is cleaned up, then dry, put into a certain amount of sand and with piston 26 compactings and keep certain pressure.Press Fig. 2 connecting line, check by nitrogen cylinder 16 whether pipeline has leakage, if can carry out next step test without leaking.
Open vacuum pump 14 reactor 1 is vacuumized, close vacuum pump 14 after reaching certain vacuum tightness, then distilling water pot 21 provides distilled water through electric metering pump 22 and needle-valve 10h to reactor 1, and at this time in reactor 1, sand is distilled water saturation.Methane gas cylinder 19 reaches set pressure and keeps set pressure to constant pressure pump 20 injection methane gass through the second reduction valve 17a and needle-valve 10f, and then constant pressure pump 20 provides the methane gas of set pressure through needle-valve 10g and the second non-return valve 18a to reactor 1.Portion gas and distilled water are discharged to graduated cylinder 15 through needle-valve 10b, needle-valve 10d, the distilled water volume that obtains taking by graduated cylinder 15, and calculate and control the saturation degree of hydrate sediment by the distilled water volume that obtains.Open freezer 23 and obtain low temperature environment, open simultaneously calibration cell 3 and ebullator 4, control and keep the interior hydrate sediment of reactor and generate and decompose the temperature environment that needs.Kept system temperature and pressure 24 hours, and guaranteed that the distilled water total overall reaction in the hydrate sediment hole was complete, this moment, the original position generation test of hydrate sediment was completed.The pressure of the temperature of rising calibration cell 3 or reduction constant pressure pump 20 can make the interior gas hydrate sediment of reactor 1 decompose, the decomposition situation of hydrate sediment under simulating natural condition.Temperature sensor 2, the first pressure unit 5, the second pressure unit 5a, pressure difference transmitter 6 collect the simulating signals such as pressure of reactor 1 temperature and up and down pipe joint thereof, these signals are transferred to data acquisition module 7 to carry out data and processes and to obtain digital signal, and digital signal is imported into and carried out that data show and storage after industrial computer 8 again.Hydrate has carried out the permeability survey test after generating.To reactor 1 ventilating methane gas, methane gas enters through reactor 1, needle-valve 10b, needle-valve 10a, gas-liquid separator 12, flowmeter 11 and needle-valve 10 and reclaims air bag 9 by needle-valve 10g and non-return valve 18a for constant pressure pump 20; Obtain temperature signal, the first pressure unit 5, the second pressure unit 5a, the pressure signal of pressure difference transmitter 6 and the flow signal of flowmeter 11 of temperature sensor 2 by data acquisition system (DAS), in conjunction with the basic datas such as viscosity of cross-sectional area, height and the methane gas gas of hydrate sediment 35, then utilize the permeability of Darcy's law calculated hydration sediment 35.Take out piston 26 with pressure head 24, unload lower connecting rod 30 and pressing plate 27, then connect lifting bolt 28 and lifting nut 29 with pressure head 24, can take out exterior cover pipeline 33, inner cover cylinder 34 and gas hydrate sediment 35, then take out inner cover cylinder 34, then the hydrate sediment sample that obtains generating that can be complete is put into the cryogenic high pressure three-axis tester and is carried out dynamic characteristic test.The native system duty is good, can obtain higher hydrate concentration, under simulating natural condition the generation of hydrate sediment with decompose environment and stress state, Basic Physical Properties research, exploration and the safe working of gas hydrate played important directive function.
Claims (6)
1. hydrate sediment original position generation and decomposition and permeability survey integrated apparatus thereof, it mainly comprises a reactor (1), scavenging leak detection system, temperature control system, air supply system, water system, permeability survey system and computer data acquisition system; It is characterized in that: described reactor (1), scavenging leak detection system, temperature control system, air supply system, water system and the permeability survey system integration are arranged in freezer (23); Described reactor (1) adopts high pressure-resistance structure, places lower thermal insulation board (38) between chassis (39) and base (37), and is fixedly connected with bolt; The first seepage flow pad (36) is placed in center at base (37); Inner cover cylinder (34) adopts fabricated structure, is placed on base (37) medium position; Exterior cover pipeline (33) is enclosed within outside inner cover cylinder (34), is clearance fit each other, and seals by the first O-ring seal (40) between exterior cover pipeline (33) and base (37); Cooling dome cylinder (32) is enclosed within outside exterior cover pipeline (33), is fixed on shaft collar (31), and is placed on equally on base (37); Pressing plate (27) is placed on inner cover cylinder (34) and exterior cover pipeline (33), seals by the second O-ring seal (40a) between pressing plate (27) and exterior cover pipeline (33), and with connecting link (30), that pressing plate (27) and base (37) is fixing; Lifting nut (29) and lifting bolt (28) are housed on pressing plate (27); Piston (26) forms with inner cover cylinder (34), exterior cover pipeline (33), pressing plate (27) and base (37) pressure chamber that seals, and seals by the 3rd O-ring seal (40b) between piston (26) and pressing plate (27); The second seepage flow pad (36a) is installed in the bottom of piston (26); Upper thermal insulation board (25) is placed on the top of piston (26); Described base (37) is provided with base pipeline (37a), is connected with air supply system, water system, and second pressure unit (5a) is set; Described cooling dome cylinder (32) is connected with temperature control system by the pipe joint (31a) on shaft collar (31); Described piston (26) is provided with piston hole (26b) and the piston tube pipeline joint (26a) of mounting temperature sensor (2), piston tube pipeline joint (26a) and scavenging leak detection system are connected with the permeability survey system, and first pressure unit (5) is set; Be connected a pressure difference transmitter (6) between described base pipeline (37a) and described piston tube pipeline joint (26a); Described piston hole (26b) bottom is provided with temperature sensor (2).
2. hydrate sediment original position according to claim 1 generation and decomposition and permeability survey integrated apparatus thereof, it is characterized in that: described scavenging leak detection system mainly comprises a nitrogen cylinder (16), is connected with piston tube pipeline joint (26a) through the first reduction valve (17) and the first non-return valve (18).
3. hydrate sediment original position according to claim 1 generation and decomposition and permeability survey integrated apparatus thereof, it is characterized in that: described temperature control system mainly comprises a calibration cell (3), an ebullator (4), is connected with shaft collar pipe joint (31a) on described shaft collar (31).
4. hydrate sediment original position according to claim 1 generation and decomposition and permeability survey integrated apparatus thereof, it is characterized in that: described air supply system mainly comprises a constant pressure pump (20) that is connected with the methane gas cylinder through the second reduction valve (17a), and constant pressure pump (20) is connected with base pipeline (37a) through the second non-return valve (18a).
5. hydrate sediment original position according to claim 1 generation and decomposition and permeability survey integrated apparatus thereof, it is characterized in that: described water system mainly comprises a distillation water pot (21) and an electric metering pump (22), and electric metering pump (22) is connected with base pipeline (37a); A graduated cylinder (15) is connected with piston tube pipeline joint (26a); A vacuum pump (14) is connected with piston tube pipeline joint (26a).
6. hydrate sediment original position according to claim 1 generation and decomposition and permeability survey integrated apparatus thereof, it is characterized in that: described permeability survey system mainly comprises one and reclaims air bag (9), its through a flowmeter (11) with is connected a gas-liquid separator (12) and is connected with piston tube pipeline joint (26a).
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