CN105116131B - Research device and method for displacing hydrates in deposited layer to form anisotropism - Google Patents
Research device and method for displacing hydrates in deposited layer to form anisotropism Download PDFInfo
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- CN105116131B CN105116131B CN201510565869.5A CN201510565869A CN105116131B CN 105116131 B CN105116131 B CN 105116131B CN 201510565869 A CN201510565869 A CN 201510565869A CN 105116131 B CN105116131 B CN 105116131B
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Abstract
The invention discloses a research device and method for displacing hydrates in a deposited layer to form anisotropism. The research device comprises a control center for controlling the operation of the research device, and further comprises a disc type reaction kettle, wherein a plurality of sensors are arranged in the disc type reaction kettle; the disc type reaction kettle is communicated with a first constant flux pump and a second constant flux pump through corresponding pipelines respectively; the first constant flux pump is communicated with a storage tank through a corresponding pipeline; the second constant flux pump is selectively communicated with a first gas bottle and the storage tank; and gas, liquid or a gas-liquid mixture is introduced into the disc type reaction kettle by the storage tank to be analyzed. By monitoring corresponding changes in a process of monitoring hydrate reactions by a relative sensor, a dehydrate induction period, a generation speed, a saturation degree and an anisotropic distribution condition of the hydrates are determined, so that hydrate reaction distribution and saturation degrees in axial, radial and tangential directions of each reaction chamber, and the anisotropic distribution condition of the hydrates in sediment are obtained.
Description
Technical field
The present invention relates to a kind of research device and method for forming anisotropy research for hydrate displacement in sedimentary.
Background technology
CO2Ocean Plugging Technology Applied is to reduce Atmospheric CO2One of major measure, it will capture the CO of enrichment by pipeline2Directly
Connect in injection ocean water Cylinder or bottom sediment, CO2Sealed up for safekeeping in the form of liquid or solid-state hydrate.Wherein submarine sedimentary strata
Interior CO2Seal up for safekeeping is by CO2Note is stored in the porous bed of seabed, the CO of liquid2In sedimentary hole dissolving, diffusion, physics,
It is gathered under sedimentary cap rock in a large number under chemistry and mineralization, so as to form a trap space.Due to and human survival
There is the interval of sea water layer in space, has higher safety relative to general inland geological storage mode.In the event of seabed
Geological disaster, crustal movement cause reservoir fracture, CO2To be migrated along crack upwards, leak that (hydrate is likely to resolve into
CO2).Work as CO2Seepage flow enters hydrate stability zone domain again, and hydrate in reservoir is formed and constantly grown up again so that sedimentary
Porosity and permeability is strongly reduced, so as to close CO2Leakage path.Even if also part CO2Infiltration perhydrate cap rock after
Reforwarding is moved, rising is diffused in ocean, also due to CO2With density of sea water difference, CO is formed2" lake type " ocean seal up for safekeeping.
As can be seen here, submarine sedimentary strata is CO2Trapping provide permanent bank, action of gravity, hydrate coating and
The mechanism of recapturing of other geologic chemistry effects can prevent CO more2There is a large amount of effusion.There are many scholars to propose CO in recent years2
Replacement exploitation sea bed gas hydrate, not only CO2The generation heat of hydrate can be used to decompose gas hydrates, and CO2Water
Compound contributes to consolidating the reservoir of deficit, prevents from causing the natural disasters such as submarine landslide because of hydrate exploitation[5]。CO2Replacement exploitation
Method has economic and environmentally double meaning, with obvious advantage compared with traditional hydrate recovery method.
No matter CO2Seabed is sealed up for safekeeping or replacement exploitation of gas hydrate, and its essence is all CO in porous media2- pore water
Displacement forms hydrate the CO with thermal diffusion effect2Flow event.CO2Competition displacement biphase with pore water, dissolving, migration,
And form hydrate in the case where temperature, pressure, salinity and hole capillary pressure are constrained jointly and continue the seepage flow to around；CO2Water
Compound is formed can reduce formation porosity and permeability again, so as to affect CO2Migration in submarine sedimentary strata.Meanwhile, CO2Water
Discharge a large amount of latent heats of phase change (about 65kJ/mol) in compound forming process, and stratum stephanoporate framework, hydrate and pore-fluid
(CO2, sea water) have different macroscopic properties (such as specific heat capacity and heat conductivity), thermal diffusion of these heats in heterogeneous
Effect can not be ignored.Therefore, hydrate displacement in furtheing investigate sedimentary is formed and CO2Migration process, to CO2Seabed is sealed up for safekeeping, day
So gas hydrate replacement exploitation and assessment hydrate are hidden spinodal decomposition and are all had great importance.Come from the document of current report
See, CO in relevant deposit2Hydrate research is concentrated mainly on CO2- pore water stands pattern, and (" standing pattern " here is referred to
CO2With pore water in macroscopical resting state) hydration thermodynamic, dynamic experiment or numerical simulation is formed, lack to seabed
Liquid CO in sedimentary2The biphase competition displacement pattern of-pore water forms hydrate kinetic and thermal diffusion effect research.Therefore,
Obtain conclusion or model there is no method directly to apply.
The content of the invention
In view of above-mentioned the deficiencies in the prior art, one kind that the present invention is provided be used for hydrate displacement in sedimentary formed it is each to
The research device of opposite sex research and method, to obtain the formation regularity of distribution of simulated sea bottom carbon dioxide hydrate to related ginseng
Number.
For solving above-mentioned technical problem, the present invention program includes：
A kind of research device for forming anisotropy research for hydrate displacement in sedimentary, which includes grinding for control
Study carefully the control centre of plant running, wherein, research device also includes a disc type reactor, is disposed with multiple biographies in disc type reactor
Sensor, disc type reactor are connected with the first constant-flux pump, the second constant-flux pump respectively by correspondence pipeline, and the first constant-flux pump passes through phase
Pipeline is answered to be connected with storage tank, the second constant-flux pump selectivity is connected with the first gas cylinder, storage tank；By storage tank by gas
Body, liquid or gas-liquid mixture are imported and are analyzed in disc type reactor.
Described research device, wherein, above-mentioned first constant-flux pump is connected with storage tank bottom by the first pipeline, and first
Constant-flux pump is connected with total inlet pipe of disc type reactor by the second pipeline, is provided with first between the first pipeline and the second pipeline
Connecting line；
Multiple branch's outlet pipes on disc type reactor are connected with a total outlet pipe, and total outlet pipe is connected with the second constant-flux pump
Logical, the second constant-flux pump is connected with storage tank top by the 3rd pipeline, is provided with the second company between total outlet pipe and the 3rd pipeline
Adapter road, the 3rd pipeline are connected with the 4th pipeline, and the 4th pipeline is connected with the first gas cylinder, between the 4th pipeline and the first pipeline
The 3rd connecting line is provided with, the 5th pipeline on the 3rd pipeline, is provided with, the 5th pipeline is connected with the second gas cylinder；
First pipeline is provided with the first valve at nearly first constant-flux pump end, and nearly storage tank end is provided with the second valve；The
Two pipelines are provided with the 3rd valve at nearly first constant-flux pump end, are provided with the 4th valve pipe end is closely always entered；First connecting tube exists
Nearly first valve end is provided with the 5th valve, and the first connecting tube is provided with the 6th valve in nearly 3rd valve end；
Total outlet pipe is provided with the 7th valve at nearly second constant-flux pump end, and the 3rd pipeline is provided with the at nearly second constant-flux pump end
Eight valves；Second connecting tube is provided with the 9th valve in nearly 7th valve end, and the second connecting tube is provided with nearly 8th valve end
Tenth valve；3rd pipeline is provided with the 11st valve at nearly storage tank end, and the 5th pipeline is provided with the 3rd line connection
Standby pressure valve, the 5th pipeline are provided with the first pressure-reduced and-regulated valve at nearly second gas cylinder end；Below 3rd connecting line the 4th
The 12nd valve is provided with pipeline, is provided with the 13rd valve on the 3rd connecting line；
4th pipeline is provided with gas flowmeter at nearly first gas cylinder end, arranges on the 4th pipeline of gas flowmeter side
There is the second decompression venting valve, on the 4th pipeline of gas flowmeter opposite side, be provided with check valve.
Described research device, wherein, the bottom of above-mentioned disc type reactor is provided with multiple blow-off pipes, on each blow-off pipe
It is provided with sewage draining valve.
Described research device, wherein, above-mentioned first pipeline is provided with the first discharge pipe, first row at storage pot bottom
The first discharge valve is provided with outlet pipe；The second discharge is provided with the 3rd pipeline between 11st valve and the 12nd valve
Pipe, arranges the second discharge valve on the second discharge pipe；The 3rd discharge pipe is provided with total outlet pipe, the on the 3rd discharge pipe, is provided with
Three discharge valves.
Described research device, wherein, above-mentioned disc type reactor includes kettle, and total inlet pipe is arranged in the middle part of kettle, kettle
It is configured with a kettle cover, kettle cover and kettle are clamping hoop type structure, kettle cover forms reative cell with kettle, and reative cell forms many by dividing plate
Individual reaction chamber, total inlet pipe are provided with an import with the corresponding position of each reaction chamber, are provided with one on the side wall of each reaction chamber
Individual outlet, each outlet are configured with branch's outlet pipe, and each branch's outlet pipe is provided with control valve with the junction of total outlet pipe；
Each reaction intracavity is configured with one group of Time Domain Reflectometry probe, one group of temperature sensor, one group of pressure transducer, one group of acoustic transducer
Device and one group of platinum electrode；Time Domain Reflectometry probe, temperature sensor, pressure transducer, acoustic transducer, platinum electrode with control in
The heart is communicated to connect.
Described research device, wherein, above-mentioned one group of Time Domain Reflectometry probe includes two Time Domain Reflectometry probes, Time Domain Reflectometry
Probe is arranged in a plane in the vertical centre position of correspondence reaction chamber, and Time Domain Reflectometry probe is radially radiated with kettle
Equably install；One group of acoustic transducer includes two sets of acoustic transducers, and two sets of acoustic transducers are located at correspondence reaction chamber respectively
Radial direction 1/3, at 2/3 position；One group of platinum electrode includes two pairs of platinum electrodes, and two pairs of platinum electrodes are located at correspondence reaction chamber radially respectively
1/3rd, at 2/3 position；One group of temperature sensor includes three temperature sensors, and one group of pressure transducer includes three pressure sensings
Device, a temperature sensor form a measuring unit with a pressure transducer, and three measuring units are evenly arranged in correspondence
Entrance, the reaction chamber between exit and import and outlet；Time Domain Reflectometry probe gathers transducer communication link with TDR
Connect, acoustic transducer is communicated to connect with acoustics collection transducer, and platinum electrode is communicated to connect with impedance collection transducer, measurement
Unit, TDR collection transducers, acoustics collection transducer, impedance collection transducer are logical by data collecting instrument and control centre
Letter connection.
Described research device, wherein, above-mentioned disc type reactor is configured with the first water bath with thermostatic control equipment, and storage tank is configured with
Second water bath with thermostatic control equipment；Be provided with the first differential manometer between the entrance of each reaction chamber, exit, total inlet pipe with it is total
The second differential manometer is provided between outlet pipe, is each equipped with electromagnetic valve on the first differential manometer and the second differential manometer；In import, outlet
It is provided with filter plug.
Described research device, wherein, has been evenly arranged six reaction chambers, each dividing plate and kettle in above-mentioned disc type reactor
Body corresponding position is provided with the slot for inserting dividing plate, and slot passes through encapsulation process.
A kind of method using the research device, which comprises the following steps：
A, open fast plug at the top of storage tank, storage tank filled into distilled water, open the first valve, the second valve, the
Three valves and the 4th valve, the total inlet pipe distilled water of storage tank being pumped into by the first advection in disc type reactor, then
The correspondence reaction intracavity entered in disc type reactor by import, full of after distilled water, distilled water is by branching out in question response chamber
Bank of tubes goes out, and is pooled to total outlet pipe, now the control valve in branch's outlet pipe be in open mode, open the 7th valve, the 8th valve,
11st valve, the second advections of Jing are pumped into storage tank, and now the second discharge valve is in opening, and the 12nd valve is in
Closed mode, makes whole system full of distilled water, the air in whole system is discharged by the second discharge valve, air is eliminated
Impact to hydrate reaction process；
B, the first constant-flux pump of closing and the second constant-flux pump, close the second discharge valve, the 11st valve, the second valve, then
Storage tank is again filled with distilled water by the fast plug at the top of secondary opening storage tank, opens the 12nd valve, opens the dioxy that is stored with
Change the first gas cylinder of carbon, by the second decompression venting valve, settings pressure is 2MPa, and gas can pass through gas flowmeter Jing check valves
Into storage tank, the first discharge valve is now opened, under the effect of the pressure a part of distilled water in storage tank is discharged, is
Reacting gas carbon dioxide reserves memory space, and to ensure to have air to enter in whole system, certain volume to be discharged steams
After distilled water, the first discharge valve is closed；The second decompression venting valve is reset, dioxy is filled with by the first gas cylinder in storage tank
Change carbon, after the pointer of the second decompression venting valve is stable, close the second decompression venting valve and the 12nd valve；Second is opened now
Water bath with thermostatic control so that the carbon dioxide and water in storage tank carries out dissolving saturation at a constant temperature；By gas flowmeter
This gas flow for being filled with the carbon dioxide in storage tank is obtained with the water yield discharged by the first discharge valve；
C, until the carbon dioxide in step B dissolves saturation in distilled water after, open the first valve, the second valve, the
Three valves, the 4th valve, the 7th valve, the 8th valve, the 11st valve, close the 12nd valve, start the first constant-flux pump, the
Two constant-flux pumps, and the first water bath with thermostatic control is opened, start the carbon dioxide hydrate reaction under dynamic circulation state, it is anti-by time domain
Penetrate the monitoring hydration of probe, temperature sensor, pressure transducer, acoustic transducer, platinum electrode, the first differential manometer and the second differential manometer
The change of acoustics, TDR, electrical signal and temperature, pressure and pressure reduction in thing course of reaction, so that it is determined that hydrate induction period,
The anisotropic elastic solid situation of generating rate, saturation and hydrate.
Described method, wherein, said method also includes：
D, after hydrate reaction terminates, the measurement of permeability is carried out using distilled water；
It is first shut off the 11st valve, the second valve so that disc type reactor becomes a closed system, it is ensured that the closing
Parameter constant in system, then slowly opens the 3rd discharge valve, lentamente discharges a part of carbon dioxide saturated solution and cause
Disc type reacting kettle inner pressure is slightly above the balance pressure of relevant temperature carbon dioxide hydrate, and ensures disc type reactor interior temperature
Degree remains unchanged or changes very little, prevents the carbon dioxide hydrate for generating from decomposing；Then by the mixed liquor in storage tank
Distilled water is replaced by, after replacing is finished, the second gas cylinder is opened, the first decompression venting valve, the first constant-flux pump, the second advection is set
Pump, standby pressure valve three pressure is identical and the pressure that is equal in disc type reactor, to ensure the dioxy in disc type reactor
Change Kohlenhydrate to decompose；
Meanwhile, arrange the first constant-flux pump, the second constant-flux pump flow velocity it is identical, then open the 11st valve, the second valve,
Start the first constant-flux pump, the second constant-flux pump, start the measurement of permeability；
The first constant-flux pump, the second constant-flux pump distilled water stability of flow is treated, record between branch's inlet/outlet pipe of each reaction chamber,
The pressure reduction of differential pressure gauge between total inlet pipe, then using water in calculated each reaction chamber in Darcy's law and above-mentioned steps C
Total hydrate concentration in compound saturation, disc type reactor, and then calculate total in each reaction chamber and disc type reactor
Permeability containing hydrate sediment.
A kind of research device and side for forming anisotropy research for hydrate displacement in sedimentary that the present invention is provided
Method, using the technical approach of disc type reactor, the first constant-flux pump, the second constant-flux pump, associated pipe and control centre, by phase
The change of acoustics, TDR, electrical signal and temperature, pressure and pressure reduction during the Sensor monitoring hydrate reaction of pass, so as to true
Determine the anisotropic elastic solid situation of hydrate induction period, generating rate, saturation and hydrate, each cavity is obtained in axle
To, radially and tangentially in hydrate reaction distribution and saturation, and disc type reactor total hydrate in deposit it is each to
Different in nature distribution situation, so that obtain the formation regularity of distribution and the relevant parameter of simulated sea bottom carbon dioxide hydrate.
Description of the drawings
Fig. 1 is the structural representation of research device in the present invention；
Fig. 2 is the structural representation of disc type reactor in the present invention；
Fig. 3 is the structural representation of one reaction chamber of disc type reactor in the present invention.
Specific embodiment
The invention provides a kind of research device and side for forming anisotropy research for hydrate displacement in sedimentary
Method, for making the purpose of the present invention, technical scheme and effect clearer, clear and definite, the present invention is described in more detail below.Should
Work as understanding, specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
The invention provides a kind of research device for forming anisotropy research for hydrate displacement in sedimentary, such as schemes
Shown in 1, which includes the control centre 58 for controlling research device operation, and wherein, research device is also reacted including a disc type
Be disposed with multiple sensors in kettle 1, disc type reactor 1, disc type reactor 1 by correspondence pipeline respectively with the first constant-flux pump 2, the
Two constant-flux pumps 3 are connected, and the first constant-flux pump 2 is connected with storage tank 4 by respective line, 3 selectivity of the second constant-flux pump and
One gas cylinder 5, the second gas cylinder 6, storage tank 4 are connected；Gas, liquid or gas-liquid mixture are imported by disc type by storage tank 4 anti-
Answer and be analyzed in kettle 1.First gas cylinder, 5 general storage carbon dioxide, but such as methane hydrate, ethane can also be stored and be hydrated
Thing, gas hydrates or refrigerant hydrate etc., 6 general storage nitrogen of the second gas cylinder.The joint of storage tank 4 is using big
Fast to insert connection, the annular knurl pressure cap on top of directly can outwarding winding simultaneously extracts fast plug, the water filling in fluid reservoir, and without liquid storage of outwarding winding
Cover on tank, it is convenient and swift.First constant-flux pump 2, the flow of the second constant-flux pump 3, the equal scalable of pressure, can meet different experiments work
The requirement of condition.
It is in another preferred embodiment of the present invention, as shown in Figure 1, above-mentioned first constant-flux pump 2 by the first pipeline 7 with
4 bottom of storage tank is connected, and the first constant-flux pump 2 is connected with total inlet pipe 9 of disc type reactor 1 by the second pipeline 8, first pipe
The first connecting line 10 is provided between road 7 and the second pipeline 8；
Multiple branch's outlet pipes 11 on disc type reactor 1 are connected with a total outlet pipe 12, total outlet pipe 12 and the second advection
Pump 3 is connected, and the second constant-flux pump 3 is connected with 4 top of storage tank by the 3rd pipeline 13, total outlet pipe 12 and the 3rd pipeline 13 it
Between be provided with the second connecting line 14, the 3rd pipeline 13 is connected with the 4th pipeline 15, and the 4th pipeline 15 is connected with the first gas cylinder 5
It is logical, the 3rd connecting line 16 is provided between the 4th pipeline 15 and the first pipeline 7, is provided with the 5th pipeline on the 3rd pipeline 13
17, the 5th pipeline 17 is connected with the second gas cylinder 6；
First pipeline 7 is provided with the first valve 18 at nearly first constant-flux pump, 2 end, and 4 end of nearly storage tank is provided with the second valve
Door 19；Second pipeline 8 is provided with the 3rd valve 20 at nearly first constant-flux pump, 2 end, and nearly total 9 end of inlet pipe is provided with the 4th valve
21；First connecting tube 10 is provided with the 5th valve 64 at nearly first valve, 18 end, and the first connecting tube 10 is at nearly 3rd valve, 20 end
It is provided with the 6th valve 22；
Total outlet pipe 12 is provided with the 7th valve 23 at nearly second constant-flux pump, 3 end, and the 3rd pipeline 13 is at nearly second constant-flux pump, 3 end
It is provided with the 8th valve 24；Second connecting tube 14 is provided with the 9th valve 25 at nearly 7th valve, 23 end, and the second connecting tube 14 exists
Nearly 8th valve, 24 end is provided with the tenth valve 26；3rd pipeline 13 is provided with the 11st valve 27 at 4 end of nearly storage tank, and the 5th
Pipeline 17 and 13 junction of the 3rd pipeline are provided with standby pressure valve 28, and the 5th pipeline 17 is provided with first at nearly second gas cylinder, 6 end
Pressure-reduced and-regulated valve 29；The 12nd valve 30, the 3rd connecting tube is provided with the 4th pipeline 15 below 3rd connecting line 16
The 13rd valve 31 is provided with road 16；
4th pipeline 15 is provided with gas flowmeter 32, the 4th pipe of 32 side of gas flowmeter at nearly first gas cylinder, 5 end
The second decompression venting valve 33 is provided with road 15, is provided with check valve 34 on the 4th pipeline 15 of 32 opposite side of gas flowmeter.
Further, the bottom of above-mentioned disc type reactor 1 is provided with multiple blow-off pipes 35, is all provided with each blow-off pipe 35
Sewage draining valve 36 is equipped with, particularly each reaction chamber one blow-off pipe 35 of correspondence of disc type reactor 1.
Further, above-mentioned first pipeline 7 is provided with the first discharge pipe 37, the first discharge pipe at 4 bottom of storage tank
The first discharge valve 38 is provided with 37；Is provided with the 3rd pipeline 13 between 11st valve 27 and the 12nd valve 30
Two discharge pipes 39, arrange the second discharge valve 40 on the second discharge pipe 39；It is provided with the 3rd discharge pipe 41 in total outlet pipe 12, the 3rd
The 3rd discharge valve 42 is provided with discharge pipe 41.
In another preferred embodiment of the present invention, as shown in Figure 2 and Figure 3, above-mentioned disc type reactor 1 includes kettle
43, total inlet pipe 9 is arranged in the middle part of kettle 43, and kettle 43 is configured with a kettle cover, and kettle cover and kettle 43 are clamping hoop type structure, kettle cover with
Kettle forms reative cell, and reative cell forms the corresponding position of multiple reaction chambers 45, total inlet pipe 9 and each reaction chamber 45 by dividing plate 44
An import 46 is provided with, on the side wall of each reaction chamber 45, one outlet 47 is provided with, each outlet 47 is configured with one point
Payout tube 11, each branch's outlet pipe 11 are provided with control valve 48 with the junction of total outlet pipe 12；Configuration in each reaction chamber 45
There are 49, one group of one group of Time Domain Reflectometry probe, 50, one group of temperature sensor pressure transducer, 51, one group of acoustic transducer 52 and one group
Platinum electrode 53；Time Domain Reflectometry probe 49, temperature sensor 50, pressure transducer 51, acoustic transducer 52, platinum electrode 53 with control
Center to center communications connection processed.
Further, above-mentioned one group of Time Domain Reflectometry probe 49 includes two Time Domain Reflectometry probes, Time Domain Reflectometry probe peace
In one plane in the vertical centre position for being mounted in correspondence reaction chamber 45, Time Domain Reflectometry probe is radially radiated with kettle 43
Install evenly；One group of acoustic transducer 52 includes two sets of acoustic transducers, and two sets of acoustic transducers are respectively at positioned at correspondence instead
Answer the radial direction 1/3 in chamber 45, at 2/3 position, often covering acoustic transducer 52 includes two acoustic transducer parts, an emitter,
One receptor；One group of platinum electrode 53 includes two pairs of platinum electrodes, and two pairs of platinum electrodes are respectively at positioned at 45 chambers of correspondence reaction radially
1/3rd, at 2/3 position, each pair platinum electrode includes two platinum electrode pieces；One group of temperature sensor 50 includes three temperature sensors,
One group of pressure transducer 51 includes three pressure transducers, and a temperature sensor forms a measurement with a pressure transducer
Unit, three measuring units are evenly arranged at corresponding import 46, export anti-at 47 and between import 46 and outlet 47
Answer chamber 45；Time Domain Reflectometry probe 49 is communicated to connect with TDR collection transducers 54, and acoustic transducer 52 is changed with acoustics collection
Device 55 is communicated to connect, and platinum electrode 53 is communicated to connect with impedance collection transducer 56, measuring unit, TDR collection transducers 54, sound
Learn collection transducer 55, impedance collection transducer 56 to communicate to connect with control centre 58 by data collecting instrument 57.
Homogeneous group of 49, one group of Time Domain Reflectometry probe, 50, one group of temperature sensor pressure sensing in each independent reaction chamber 45
51, one group of acoustic transducer 52 of device and one group of platinum electrode 53, which is installed by mounting bracket, and considers them as far as possible
Between interference.According to the specification of disc type reactor, the quantity of reaction chamber 45 can suitably increase and decrease, more comprehensively can react
In whole operating radius, space measurement is comprehensive, and can reduce the interference between different monitoring meanss, improves certainty of measurement.This
Sample can determine well in each cavity radially, axially, tangential CO2The distribution of hydrate, saturation and permeability and drive
For Cambium periodicity feature.Meanwhile, hydrate distributional difference between different cavitys can be compared, with reference to installed in total inlet pipe and total
The temperature of escape pipe, pressure and differential pressure pick-up can analyze the total distribution in deposit of hydrate, permeability, saturation with
Each anisotropic character being distributed to the relation between (cavity), acquisition hydrate.Can be analyzed according to various monitoring measures
Hydrate growth characteristic, permeability, saturation and the regularity of distribution on each 45 different directions of reaction chamber (radially, tangential, axial direction),
Then the border circular areas hydrate according to the Analysis of Anisotropic of hydrate in each reaction chamber 45 centered on total inlet pipe 9
Anisotropic character in different directions, can be CO2Bury to provide with replacement exploitation of gas hydrate and weigh very much in seabed
The theoretical basiss wanted.
And above-mentioned disc type reactor 1 is configured with the first water bath with thermostatic control equipment 59, storage tank 4 is configured with the second water bath with thermostatic control
Equipment 60；At the import 46 of each reaction chamber 45, outlet 47 between be provided with the first differential manometer 61, total inlet pipe 9 with it is total
The second differential manometer 62 is provided between outlet pipe 12, is each equipped with electromagnetic valve 63 on the first differential manometer 61 and the second differential manometer 62；Enter
Filter plug is provided with mouth 46, outlet 47.Six reaction chambers 45 are evenly arranged in above-mentioned disc type reactor 1, each dividing plate 44
43 corresponding position of kettle is provided with the slot for inserting dividing plate, slot prevents mutual between dividing plate 44 by encapsulation process
Affect, the number of reaction chamber 45 in kettle can be made freely to be combined, the number in selective response chamber is needed according to experiment.
Present invention also offers a kind of method using the research device, which comprises the following steps：
Storage tank 4 is filled distilled water, opens the first valve 18, second by the fast plug at the top of step A, opening storage tank 4
The distilled water of storage tank 4 is sent into disc type reactor 1 by the first constant-flux pump 2 by valve 19, the 3rd valve 20 and the 4th valve 21
In total inlet pipe 9, then by import 46 enter disc type reactor 1 in corresponding reaction chamber 45 in, question response chamber 45 full of steaming
After distilled water, distilled water is discharged by branch's outlet pipe 11, is pooled to total outlet pipe 12, and now the control valve 48 in branch's outlet pipe 11 is in
Open mode, opens the 7th valve 23, the 8th valve 24, the 11st valve 27, and the second constant-flux pumps of Jing 3 send into storage tank 4, now
Second discharge valve 40 is in opening, and the 12nd valve 30 is closed, and makes whole system full of distilled water, will be whole
Air in individual system is discharged by the second discharge valve 40, eliminates impact of the air to hydrate reaction process；
Step B, close the first constant-flux pump 2 and the second constant-flux pump 3, the second discharge valve 40 of closing, the 11st valve 27, the
Storage tank 4 is again filled with distilled water by two valves 19, the fast plug being again turned at the top of storage tank 4, opens the 12nd valve
30, unlatching is stored with the first gas cylinder 5 of carbon dioxide, and by the second decompression venting valve 33, settings pressure is 2MPa, and gas can lead to
Cross 32 Jing check valves 34 of gas flowmeter and enter storage tank 4, now open the first discharge valve 38, will deposit under the effect of the pressure
A part of distilled water in storage tank 4 is discharged, and is that reacting gas carbon dioxide reserves memory space, so that ensure will not in whole system
There is air to enter, after certain volume distilled water to be discharged, close the first discharge valve 38；Reset the second decompression venting valve
33, carbon dioxide is filled with by the first gas cylinder 5 in storage tank 4, after the pointer of the second decompression venting valve 33 is stable, the is closed
Two decompression venting valves 33 and the 12nd valve 30；Now open the second water bath with thermostatic control 60 so that carbon dioxide in storage tank 4 and
Water carries out dissolving saturation at a constant temperature；The water yield discharged by gas flowmeter 32 and by the first discharge valve 38 is obtained
This is filled with the gas flow of the carbon dioxide in storage tank 4；
Step C, until the carbon dioxide in step B dissolves saturation in distilled water after, open the first valve 18, the second valve
The 19, the 3rd valve 20 of door, the 4th valve 21, the 7th valve 23, the 8th valve 24, the 11st valve 27, close the 12nd valve
30, start the first constant-flux pump 2, the second constant-flux pump 3, and open the first water bath with thermostatic control 59, start the dioxy under dynamic circulation state
Change Kohlenhydrate reaction, by Time Domain Reflectometry probe 49, temperature sensor 50, pressure transducer 51, acoustic transducer 52, platinum electricity
Pole 53, the first differential manometer 61 and the second differential manometer 62 monitoring hydrate reaction during acoustics, TDR, electrical signal and temperature,
The change of pressure and pressure reduction, so that it is determined that the anisotropic elastic solid of hydrate induction period, generating rate, saturation and hydrate
Situation.
All of data signal with Real-time Collection and can be transferred to control centre 58 by data collecting instrument 57.Wherein acoustics
Transducer 52 gathers the velocity of wave that transducer 55 obtains sound wave (horizontal, compressional wave) for launching and receive sound wave by acoustics, according to
Relation between velocity of wave and hydrate concentration, it may be determined that the hydrate concentration in 1 upper strata tangential direction of disc type reactor.When
The electromagnetic wave that the guiding of domain reflective probe 49 is transmitted is propagated in deposition medium of the disc type reactor 1 containing hydrate, is led to
Cross TDR collection transducers 54 and obtain waveform, so as to obtain dielectric constant, further according to the Jing between media water-bearing amount and dielectric constant
Formula is tested, the water content in deposition medium containing hydrate is obtained, so as to finally determine 1 intermediate layer of disc type reactor radially and tangentially
The change of water content and the change of hydrate concentration in deposit；Platinum electrode 53 accesses constant potential, by impedance collection
Transducer 56 can measure the impedance between two platinum electrodes 53, can monitor hydrate formation and generation by impedance variation
The parameters such as speed, combination temperature, pressure, deposit porosity calculate 1 lower floor's hydrate growing amount of disc type reactor and satisfy
And degree；Temperature sensor 50, pressure transducer 51, the first differential manometer 61, the second differential manometer 62 can enter to hydrate formation
Trip temperature, pressure and pressure reduction real-time monitoring, judge whether hydrate reacts and the extent of reaction, it is also possible to by thermodynamical equilibrium equation
Hydrate reaction amount is calculated, so that it is determined that hydrate concentration.But the first differential manometer 61,62 main work of the second differential manometer
Be measurement containing hydrate sediment permeability.Can be obtained by survey calculations such as acoustics, TDR, electricity and temperature, pressures
Each cavity hydrate in axial direction, radially and tangentially hydrate reaction distribution and saturation, and disc type reactor 1 is being deposited
Anisotropic elastic solid situation in thing, it is possible to understand that the formation regularity of distribution of seabed carbon dioxide hydrate.
Further, said method also includes：
Step D, after hydrate reaction terminates, the measurement of permeability is carried out using distilled water；
It is first shut off the 11st valve 27, the second valve 19 so that disc type reactor 1 becomes a closed system, it is ensured that
Parameter constant in the closed system, then slowly opens the 3rd discharge valve 42, lentamente discharges a part of carbon dioxide and satisfy
With liquid so that disc type reacting kettle inner pressure is slightly above the balance pressure of relevant temperature carbon dioxide hydrate, and ensure that disc type is anti-
Answer temperature in kettle 1 to remain unchanged or change very little, prevent the carbon dioxide hydrate for generating from decomposing；Then by storage tank 4
In mixed liquor be replaced by distilled water, after replacing is finished, open the second gas cylinder 6, the first decompression venting valve 29, the first advection be set
Pump 2, the second constant-flux pump 3 be identical with the pressure of standby pressure valve 28 and the pressure that is equal in disc type reactor 1, to ensure that disc type is anti-
Answer the carbon dioxide hydrate in kettle 1 not decompose；
Meanwhile, arrange the first constant-flux pump 2, the second constant-flux pump 3 flow velocity it is identical, then open the 11st valve 27, second
Valve 19, starts the first constant-flux pump 2, the second constant-flux pump 3, starts the measurement of permeability；
Treat the first constant-flux pump 2,3 distilled water stability of flow of the second constant-flux pump, record total inlet pipe 9 of each reaction chamber 45 with it is total
The pressure reduction of differential pressure gauge between outlet pipe 12, then using in calculated each reaction chamber 45 in Darcy's law and above-mentioned steps C
Total hydrate concentration in hydrate concentration, disc type reactor, and then calculate total in each reaction chamber and disc type reactor
The permeability containing hydrate sediment.Certainly the step can also replace vapor to carry out the test of permeability using gas,
Its difference is to carry out permeability test using gas, is that each pipeline open/closed sequence is different, and then controls each pipeline
Close or connect, this is no longer going to repeat them.
In test process, the effect of corresponding electromagnetic valve 63 on differential manometer is believed when differential pressure reaches maximum pressure difference
Electronic correspondence electromagnetic valve 63 number can be automatically transmitted to, so that electromagnetic valve 63 is automatically switched off, differential pressure pick-up is protected.In addition, can
With the hydrate by synthesizing different saturation and different distributions, measure corresponding permeability, it is hereby achieved that saturation and
Relation between permeability, can bury for carbon dioxide hydrate and replacement exploitation etc. provides important data.
This research device can also simulate the reaction under static state, the first two steps and above-mentioned steps A, step under simulation static state
Rapid B is identical, during three steps, after treating the carbon dioxide saturation in step B, opens the first valve 18, the 12nd valve 30, starts
First constant-flux pump 2 and the second constant-flux pump 3, set the first water bath with thermostatic control equipment 59 according to requirement of experiment and start so that titanium dioxide
Carbon saturated solution is circulated in systems, after carbon dioxide saturated solution is full of whole system, closes the 4th valve 21, the 7th valve
Door 23, stops the first constant-flux pump 2 and the second constant-flux pump 3, is at a completely enclosed standing shape in such disc type reactor 1
State, the hydrate reaction under this state can the reaction lower with above dynamic be contrasted, research trends environment and standing ring
The difference of both reactions in border, two steps below are identical with above-mentioned steps C, step D.
The decapacitation of this research device carries out carbon dioxide and distilled water and is circulated again or standing and reacting after advance saturation,
Can also be used for traditional batch (-type) or continuous supply hydrate reaction research.The first step is identical with step A.Second step, treats whole
System opens the first discharge valve 38, by storage tank full of after distilled water, stopping starting the first constant-flux pump 2 and the second constant-flux pump 3
Distilled water discharging in 4 is out；The 11st valve 27, the 13rd valve 31 is closed, the first gas cylinder 5 is opened, is set second and subtract
Pressure pressure maintaining valve 33, gas Jing gas flowmeters 32, check valve 34, the 12nd valve 30, into storage tank 4, are then shut off first
Valve 18, the 3rd valve 20, open the 5th valve 64, the 6th valve 22, and such air-flow can bypass the first constant-flux pump 2, enter
Disc type reactor 1, gas Jing the second valves 19, the 5th valve 64, the 6th valve 22, the 4th valve 21 enter disc type reactor 1
In total inlet pipe 9, now the sewage draining valve 36 corresponding with total inlet pipe 9 is opened, by total inlet pipe 9 and storage tank 4 to always entering
Distilled water in 9 this section of pipeline of pipe is all released, and after drained distilled water, closes sewage draining valve 36, and such carbon dioxide is just
Can be filled with total inlet pipe 9 of disc type reactor 1, now, in six reaction chambers 45 in disc type reactor 1, there was only pure distillation
Water, by import so that carbon dioxide and distilled water are contacted, can so study in traditional batch (-type) or continuous
Hydrate reaction under blowing model.
Certainly, only presently preferred embodiments of the present invention described above, the present invention are not limited to enumerate above-described embodiment, should
When explanation, any those of ordinary skill in the art are under the teaching of this specification, all equivalent substitutes for being made, bright
Aobvious variant, all falls within the essential scope of this specification, ought to be protected by the present invention.
Claims (7)
1. it is a kind of in sedimentary hydrate displacement formed anisotropy research research device, it include for control study
The control centre of plant running, it is characterised in that research device also includes a disc type reactor, is disposed with many in disc type reactor
Individual sensor, disc type reactor are connected with the first constant-flux pump, the second constant-flux pump respectively by correspondence pipeline, and the first constant-flux pump leads to
Cross respective line to be connected with storage tank, the second constant-flux pump selectivity is connected with the first gas cylinder, storage tank；Will by storage tank
Gas, liquid or gas-liquid mixture are imported and are analyzed in disc type reactor；
Above-mentioned first constant-flux pump is connected with storage tank bottom by the first pipeline, and the first constant-flux pump passes through the second pipeline and disc type
Total inlet pipe of reactor is connected, and is provided with the first connecting line between the first pipeline and the second pipeline；
Multiple branch's outlet pipes on disc type reactor are connected with a total outlet pipe, and total outlet pipe is connected with the second constant-flux pump, the
Two constant-flux pumps are connected with storage tank top by the 3rd pipeline, are provided with the second connecting tube between total outlet pipe and the 3rd pipeline
Road, the 3rd pipeline are connected with the 4th pipeline, and the 4th pipeline is connected with the first gas cylinder, arrange between the 4th pipeline and the first pipeline
There is the 3rd connecting line, on the 3rd pipeline, be provided with the 5th pipeline, the 5th pipeline is connected with the second gas cylinder；
First pipeline is provided with the first valve at nearly first constant-flux pump end, and nearly storage tank end is provided with the second valve；Second pipe
Road is provided with the 3rd valve at nearly first constant-flux pump end, is provided with the 4th valve pipe end is closely always entered；First connecting tube is nearly
One valve end is provided with the 5th valve, and the first connecting tube is provided with the 6th valve in nearly 3rd valve end；
Total outlet pipe is provided with the 7th valve at nearly second constant-flux pump end, and the 3rd pipeline is provided with the 8th valve at nearly second constant-flux pump end
Door；Second connecting tube is provided with the 9th valve in nearly 7th valve end, and the second connecting tube is provided with the tenth in nearly 8th valve end
Valve；3rd pipeline is provided with the 11st valve at nearly storage tank end, and the 5th pipeline and the 3rd line connection are provided with standby pressure
Valve, the 5th pipeline are provided with the first pressure-reduced and-regulated valve at nearly second gas cylinder end；The 4th pipeline below 3rd connecting line
On be provided with the 12nd valve, be provided with the 13rd valve on the 3rd connecting line；
4th pipeline is provided with gas flowmeter at nearly first gas cylinder end, is provided with the 4th pipeline of gas flowmeter side
Two decompression venting valves, are provided with check valve on the 4th pipeline of gas flowmeter opposite side；
The bottom of above-mentioned disc type reactor is provided with multiple blow-off pipes, is provided with sewage draining valve on each blow-off pipe；
Above-mentioned first pipeline is provided with the first discharge pipe at storage pot bottom, is provided with the first dump valve on the first discharge pipe
Door；The second discharge pipe is provided with the 3rd pipeline between 11st valve and the 12nd valve, arranges on the second discharge pipe
Two discharge valves；The 3rd discharge pipe is provided with total outlet pipe, on the 3rd discharge pipe, the 3rd discharge valve is provided with.
2. research device according to claim 1, it is characterised in that above-mentioned disc type reactor includes kettle, and total inlet pipe sets
Put in the middle part of kettle, kettle is configured with a kettle cover, kettle cover and kettle are clamping hoop type structure, kettle cover forms reative cell with kettle, instead
Room is answered to form multiple reaction chambers by dividing plate, total inlet pipe is provided with an import with the corresponding position of each reaction chamber, each reaction
One outlet is provided with the side wall in chamber, each outlet is configured with branch's outlet pipe, the company of each branch's outlet pipe and total outlet pipe
The place of connecing is provided with control valve；Each reaction intracavity is configured with one group of Time Domain Reflectometry probe, one group of temperature sensor, one group of pressure
Sensor, one group of acoustic transducer and one group of platinum electrode；Time Domain Reflectometry probe, temperature sensor, pressure transducer, acoustic transducer
Device, platinum electrode are communicated to connect with control centre.
3. research device according to claim 2, it is characterised in that above-mentioned one group of Time Domain Reflectometry probe includes two time domains
Reflective probe, Time Domain Reflectometry probe are arranged in a plane in the vertical centre position of correspondence reaction chamber, Time Domain Reflectometry probe
Radially radiated with kettle and equably installed；One group of acoustic transducer includes two sets of acoustic transducers, two sets of acoustic transducers
Respectively at the correspondingly radial direction 1/3 of reaction chamber, 2/3 position；One group of platinum electrode includes two pairs of platinum electrodes, two pairs of platinum electrode difference
At correspondence reaction chamber radially 1/3,2/3 position；One group of temperature sensor includes three temperature sensors, one group of pressure sensing
Device includes three pressure transducers, and a temperature sensor forms a measuring unit, three measurements with a pressure transducer
Unit is evenly arranged in corresponding entrance, the reaction chamber between exit and import and outlet；Time Domain Reflectometry probe with
TDR collection transducer communication connections, acoustic transducer with acoustics collection transducer communication connection, platinum electrode is and impedance collection
Transducer is communicated to connect, and measuring unit, TDR collection transducers, acoustics collection transducer, impedance collection transducer pass through data
Acquisition Instrument is communicated to connect with control centre.
4. research device according to claim 2, it is characterised in that above-mentioned disc type reactor is configured with the first water bath with thermostatic control
Equipment, storage tank are configured with the second water bath with thermostatic control equipment；The first pressure is provided between the entrance of each reaction chamber, exit
Difference meter, is provided with the second differential manometer between total inlet pipe and total outlet pipe, is each equipped with electricity on the first differential manometer and the second differential manometer
Magnet valve；Filter plug is provided with import, outlet.
5. research device according to claim 2, it is characterised in that be evenly arranged in above-mentioned disc type reactor six it is anti-
Chamber is answered, each dividing plate is provided with the slot for inserting dividing plate with kettle corresponding position, slot passes through encapsulation process.
6. a kind of method using research device as claimed in claim 1, which comprises the following steps：
Storage tank is filled distilled water, opens the first valve, the second valve, the 3rd valve by the fast plug at the top of A, opening storage tank
Tetra- valves of Men Yu, the total inlet pipe distilled water of storage tank being pumped into by the first advection in disc type reactor, then pass through
The correspondence reaction intracavity that import is entered in disc type reactor, full of after distilled water, distilled water is by branching out bank of tubes in question response chamber
Go out, be pooled to total outlet pipe, now the control valve in branch's outlet pipe be in open mode, open the 7th valve, the 8th valve, the tenth
One valve, the second advections of Jing are pumped into storage tank, and now the second discharge valve is in opening, and the 12nd valve is in closing
State, makes whole system full of distilled water, the air in whole system is discharged by the second discharge valve, eliminate air to water
The impact of compound course of reaction；
B, the first constant-flux pump of closing and the second constant-flux pump, close the second discharge valve, the 11st valve, the second valve, beat again
The fast plug at the top of storage tank is opened, storage tank is again filled with into distilled water, open the 12nd valve, open the carbon dioxide that is stored with
The first gas cylinder, by the second decompression venting valve, setting pressure is 2MPa, and gas can be entered by gas flowmeter Jing check valves
Storage tank, now opens the first discharge valve, discharges a part of distilled water in storage tank under the effect of the pressure, is reaction
Atmospheric carbon dioxide reserves memory space, to ensure to have air to enter in whole system, certain volume distilled water to be discharged
Afterwards, close the first discharge valve；The second decompression venting valve is reset, titanium dioxide is filled with by the first gas cylinder in storage tank
Carbon, after the pointer of the second decompression venting valve is stable, closes the second decompression venting valve and the 12nd valve；Second is opened now permanent
Tepidarium so that the carbon dioxide and water in storage tank carries out dissolving saturation at a constant temperature；By gas flowmeter and
The water yield discharged by the first discharge valve obtains this gas flow for being filled with the carbon dioxide in storage tank；
C, until the carbon dioxide in step B dissolves saturation in distilled water after, open the first valve, the second valve, the 3rd valve
Door, the 4th valve, the 7th valve, the 8th valve, the 11st valve, close the 12nd valve, start the first constant-flux pump, second flat
Stream pump, and the first water bath with thermostatic control is opened, start the carbon dioxide hydrate reaction under dynamic circulation state, visited by Time Domain Reflectometry
Pin, temperature sensor, pressure transducer, acoustic transducer, platinum electrode, the first differential manometer are anti-with the second differential manometer monitoring hydrate
The change of acoustics, TDR, electrical signal and temperature, pressure and pressure reduction during answering, so that it is determined that hydrate induction period, generation
The anisotropic elastic solid situation of speed, saturation and hydrate.
7. method according to claim 6, it is characterised in that said method also includes：
D, after hydrate reaction terminates, the measurement of permeability is carried out using distilled water；
It is first shut off the 11st valve, the second valve so that disc type reactor becomes a closed system, it is ensured that the closed system
In parameter constant, then slowly open the 3rd discharge valve, lentamente discharge a part of carbon dioxide saturated solution and cause disc type
Reacting kettle inner pressure is slightly above the balance pressure of relevant temperature carbon dioxide hydrate, and ensures disc type reactor temperature dimension
Hold constant or change very little, prevent the carbon dioxide hydrate for generating from decomposing；Then by the mixing fluid exchange in storage tank
For distilled water, after replacing is finished, open the second gas cylinder, arrange the first decompression venting valve, the first constant-flux pump, the second constant-flux pump with it is standby
The pressure of pressure valve is identical and the pressure that is equal in disc type reactor, to ensure the carbon dioxide hydrate in disc type reactor
Will not decompose；
Meanwhile, arrange the first constant-flux pump, the second constant-flux pump flow velocity it is identical, then open the 11st valve, the second valve, start
First constant-flux pump, the second constant-flux pump, start the measurement of permeability；
The first constant-flux pump, the second constant-flux pump distilled water stability of flow is treated, recorded between branch's inlet/outlet pipe of each reaction chamber, always entered
The pressure reduction of differential pressure gauge between pipe, then using hydrate in calculated each reaction chamber in Darcy's law and above-mentioned steps C
Total hydrate concentration in saturation, disc type reactor, and then calculate total aqueous in each reaction chamber and disc type reactor
The permeability of compound deposit.
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| CN105572014B (en) * | 2016-02-03 | 2018-11-13 | 青岛海洋地质研究所 | Gas hydrates saturation degree and deposit permeability synchronous measuring apparatus and method |
| CN106981248B (en) * | 2017-06-06 | 2023-04-07 | 石柳莹 | Earth movement geography demonstration instrument |
| CN108169448B (en) * | 2017-12-06 | 2020-06-12 | 中国科学院广州能源研究所 | Hydrate in-situ synthesis and comprehensive physical property testing device thereof |
| CN108896742B (en) * | 2018-08-01 | 2023-09-29 | 中国华能集团有限公司 | System for quantitatively analyzing shale anisotropy and application method thereof |
| CN114053969B (en) * | 2021-11-15 | 2022-06-28 | 清华大学深圳国际研究生院 | Carbon dioxide hydrate sequestration experimental device and carbon dioxide sequestration amount calculation method |
| CN115015086B (en) * | 2022-07-26 | 2024-01-26 | 中国石油大学(华东) | Hydrate stratum permeability on-site in-situ quantitative evaluation method based on complex conductivity |
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| CN103471976B (en) * | 2013-09-18 | 2016-02-24 | 中国科学院广州能源研究所 | A kind of device measured containing hydrate porous deposit permeability |
| CN103528865B (en) * | 2013-10-17 | 2016-03-30 | 中国科学院广州能源研究所 | Even high saturation gas hydrate preparation method and device in a kind of sediment |
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