CN109696537A - Gas hydrate synthesis decomposes observation device and its method under the conditions of high-voltage electrostatic field - Google Patents
Gas hydrate synthesis decomposes observation device and its method under the conditions of high-voltage electrostatic field Download PDFInfo
- Publication number
- CN109696537A CN109696537A CN201910080750.7A CN201910080750A CN109696537A CN 109696537 A CN109696537 A CN 109696537A CN 201910080750 A CN201910080750 A CN 201910080750A CN 109696537 A CN109696537 A CN 109696537A
- Authority
- CN
- China
- Prior art keywords
- kettle
- reaction kettle
- temperature
- pressure
- electrostatic field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels, explosives
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention discloses that gas hydrate synthesis under the conditions of a kind of high-voltage electrostatic field decomposes observation device and its method, device include: reaction kettle, high voltage electric field device, temperature and pressure control device, video monitoring devices, data acquisition device；Reaction kettle includes: autoclave body, kettle cover, dress sample cup, cup lid, cutting ferrule；High voltage electric field device includes: electrode plate, conductive column, high voltage power supply, provides high-voltage electrostatic field for the reaction kettle；Temperature and pressure control device includes: insulating box, gas cylinder, Pneumatic booster platform, surge tank, drying chamber, and different temperature and pressures is provided for the reaction kettle；Video monitoring devices include: camera and light source, and the hydrate observed in reaction kettle is generated or decomposed；Data acquisition device includes: temperature sensor, pressure sensor, data acquisition device and computer.When the present invention is capable of measuring under the conditions of different temperatures, pressure, electric field strength or different drilling fluid materials add, the formation induction time and decomposition rate of different type hydrate.
Description
Technical field
The present invention relates to untraditional reservoir engineerings and geotechnical engineering Basic Physical Properties field of measuring technique, more particularly to one kind
Gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field.
Background technique
The deep water that gas hydrates are mainly distributed on ocean, permafrost band and some inland lakes in nature sinks
In product object, wherein it is maximum with the hydrate original position reserves of disseminated in hypotonic fine-grained sediment reservoir, in such hydrate reservoir
The surface charge of clay mineral (shale) may directly affect the formation and decomposition of hydrate, with the Filling process of hydrate and
Scale is closely bound up；Simultaneously such hydrate exploitation, it is necessary to use special drilling fluid system, ensure drilling safety, efficiently.
Therefore, clay mineral surface charge, different drilling fluid materials etc. are studied to gas hydrate synthesis, decomposition and its rule
It influences, helps to differentiate the micromechanism of gas hydrate synthesis and OPTIMIZATION OF DRILLING FLUID formula in such reservoir, it is significant.In recent years
Come, the correlative study that domestic and international many scientific research institutions and colleges and universities have carried out gas hydrate synthesis in succession, decomposed rule and influence factor,
Means focus mostly on and test indoors, and the macro qualitative analysis conclusion of acquisition is more, but due to a lack of research means to the basis of micromechanism
Problem in science research is less.
Summary of the invention
In view of this, the embodiment provides gas hydrate synthesis under the conditions of a kind of high-voltage electrostatic field to decompose observation dress
It sets and method, is capable of measuring under the conditions of different temperatures, pressure, electric field strength or when different drilling fluid materials additions, different type
The formation induction time and decomposition rate of hydrate.
To achieve the above object, present invention employs a kind of technical solutions: gas hydrate synthesis point under the conditions of high-voltage electrostatic field
Solve observation device, comprising: reaction kettle, high voltage electric field device, temperature and pressure control device, video monitoring devices, data acquisition device；
The reaction kettle include: autoclave body, set on the autoclave body top kettle cover, be placed in the intracorporal dress sample cup of the kettle, solid
The cutting ferrule of the fixed dress sample cup；The top end opening of the autoclave body has a built-in space, and the top of the kettle cover sealing autoclave body is opened
Mouthful, the dress sample cup is placed in the built-in space of autoclave body, for filling sample；
The conduction that the high voltage electric field device includes: the electrode plate being placed in the reaction kettle, is connect with the electrode plate
Column, the high voltage power supply connecting with the conductive column provide high-voltage electrostatic field for the reaction kettle；
The temperature and pressure control device includes: insulating box, gas cylinder, the Pneumatic booster platform connecting with the gas cylinder and the gas
The surge tank of dynamic pressurization platform connection buffers tank connected drying chamber with described, and the reaction kettle is placed in insulating box, is described anti-
Kettle is answered to provide different temperature, the drying chamber connects reaction kettle, different pressure is provided for the reaction kettle；
The video monitoring devices include: the camera of gas hydrate synthesis and decomposition and be described in the shooting reaction kettle
The light source of reaction kettle polishing, the hydrate observed in the reaction kettle are generated or are decomposed；
The data acquisition device includes: the temperature sensor for measuring the reaction kettle internal and external temperature, the measurement reaction
The pressure sensor of kettle external pressure, the data acquisition device for acquiring data and the computer for handling data.
Further, it is equipped with card slot in the bottom of the kettle cover, sealing ring is set on the card slot to ensure autoclave body
Leakproofness.
Further, it is embedded in form in the middle part of the autoclave body, the form includes: the first form and the second form, described
Light source penetrates the polishing in kettle of the first form, and the camera shoots the generation and decomposition of hydrate in kettle by the second form.
Further, air inlet and air outlet are laid on the kettle cover, in the air inlet and air outlet respectively
It is furnished with admission line, outlet line, the drying chamber connection admission line is gas supply, pressure supply in kettle.
Further, the connecting line of the gas cylinder and Pneumatic booster platform is equipped with first pressure gauge and the first valve,
The admission line is equipped with second pressure gauge and the second valve, and third valve is equipped on the outlet line.
Further, the electrode plate includes: electric pole plate and lower electrode plate, the conductive column include: upper conductive column and
Lower conductive column；The high voltage power supply is connect by high-tension cable with upper conductive column, is powered for the electric pole plate, the top electrode
Plate and lower electrode plate form high-voltage electrostatic field, and the lower electrode plate is grounded by lower conductive column external connection.
Further, the conductive column is fixed by fixing piece, and the fixing piece includes: upper fixing element and lower fixing piece,
The upper conductive column is fixed on kettle cover by upper fixing element, and the lower conductive column is fixed on autoclave body by lower fixing piece.
Further, the electric pole plate is connect by several columns with kettle cover, and the lower electrode plate is by electrodes base
Support.
Further, the temperature sensor includes: temperature in the kettle sensor and the outer temperature sensor of kettle, temperature in the kettle
Degree sensor is placed in dress sample cup, and the outer temperature sensor of the kettle is placed in insulating box.
To achieve the above object, present invention employs another technical solutions: utilizing high-voltage electrostatic field item described above
Gas hydrate synthesis decomposes the method that observation device is tested under part, includes the following steps:
Check device air-tightness and safety: before sample installation, check whether each sealing element and easily worn part are intact；
Dress sample: experiment needs cleaning, dry dress sample cup first every time；Then sample is added, covers cup lid；Finally tighten kettle
Lid；
Device prepares: reaction kettle is put into insulating box, connection high voltage electric field device, temperature and pressure control device and data acquisition dress
The pipeline set installs light source and camera, closes the case lid of insulating box, opens data acquisition device；
Ventilation: the gas slowly in gas cylinder is passed through in kettle according to experimental program, reaches experimental design pressure；
Cooling: cooling down according to experimental program, drops or rise to same initial temperature according to ambient temperature every time；
Pressure regulation: before opening high voltage power supply, checking again for each pipeline, then open high voltage power supply, and being slowly adjusted to experiment needs
Seek voltage；
Observation: the temperature and pressure that video, temperature sensor and pressure sensor based on camera shooting measure respectively,
It observes the generation of hydrate, decompose.
The technical solution that the embodiment of the present invention provides has the benefit that (1) mixer design pressure is 0-
20MPa, lowest temperature are -20 DEG C, meet all kinds of gas hydrate synthesis and decomposition condition, while hydrate in energy simulated sea bottom reservoir
The environment for being formed and being decomposed；(2) the upper and lower electrode plate of high voltage electric field device is all placed in closed reaction kettle, high voltage power supply
It is adjusted and forms different electric field strengths between pole plate, simulate the electric field formed by clay mineral surface charge in different spaces position
The electric field strength set, influence of the comprehensive research clay mineral to gas hydrate synthesis and decomposition, easy to operate, safety；(3) sample is filled
Cup can be generated in cup using reaction kettle simulation wellbore hole environment with acid and alkali-resistance, decompose that hydrate is easy to operate, and high-efficient, energy is fastly
The performance of drilling fluid materials, is conducive to improve preferred efficiency when fast accurate evaluation hydrate simulation reality exploitation.
Detailed description of the invention
Fig. 1 is the work system figure of gas hydrate synthesis decomposition observation device under the conditions of high-voltage electrostatic field；
Fig. 2 is the composition schematic diagram of gas hydrate synthesis decomposition observation device under the conditions of high-voltage electrostatic field
Fig. 3 is the reaction kettle schematic diagram one of gas hydrate synthesis decomposition observation device under the conditions of high-voltage electrostatic field；
Fig. 4 is the reaction kettle schematic diagram two of gas hydrate synthesis decomposition observation device under the conditions of high-voltage electrostatic field；
Fig. 5 is the experimental method flow chart of gas hydrate synthesis decomposition observation device under the conditions of high-voltage electrostatic field.
Wherein: 1- autoclave body, 2- kettle cover, 3- electrode plate, 3-1- electric pole plate, electrode plate under 3-2-, 4- conductive column, on 4-1-
Conductive column, conductive column under 4-2-, 5- fixing piece, 5-1- upper fixing element, fixing piece under 5-2-, 6- column, the first column of 6-1-, 6-
The second column of 2-, 6-3- third column, 7- fill sample cup, 8- cup lid, 9- electrodes base, 10- cutting ferrule, the first form of 11-1-, 11-
The second form of 2-, 12- card slot, 12-1- sealing ring, the gas outlet 13-, 13-1- outlet line, 14- air inlet, 14-1- air inlet pipe
Line, 15- valve, the first valve of 15-1-, the second valve of 15-2-, 15-3- third valve, 16- pressure gauge, 16-1- first pressure
Table, 16-2- second pressure gauge, 17- drying chamber, 18- surge tank, 19- Pneumatic booster platform, 20- gas cylinder, 21- camera, 22- light
Source, 23- temperature sensor, 23-1- temperature in the kettle sensor, the outer temperature sensor of 23-2- kettle, 24- pressure sensor, 25- high
Voltage source, 26- data acquisition device, 27- computer, 28- insulating box, 29- ground wire, 30- reaction kettle, 31- high voltage electric field device,
32- temperature and pressure control device, 33- video monitoring devices, 34- data acquisition device.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
As shown in Figs. 1-2, it decomposes and sees the embodiment provides gas hydrate synthesis under the conditions of a kind of high-voltage electrostatic field
Survey device, comprising: reaction kettle 30, provide the high voltage electric field device 31 of high-voltage electrostatic field for the reaction kettle 30, be the reaction
Kettle 30 provides the video monitoring devices 33 of reaction kettle 30 described in the temperature and pressure control device 32 of different temperatures and pressure, Observable, adopts
The data acquisition device 34 of collection and processing data.
As shown in Figure 3-4, the reaction kettle 30 include: autoclave body 1, set on 1 top of autoclave body kettle cover 2, be placed in it is described
Dress sample cup 7 in autoclave body 1, the cup lid 8 on the dress sample cup 7, the fixed cutting ferrule 10 for filling sample cup 7.
The top end opening of the autoclave body 1, there is a built-in space, utilizes the top end opening of the kettle cover 2 sealing autoclave body 1, example
Such as, the top end opening of the 2 helixseal autoclave body 1 of kettle cover.In the middle part of the autoclave body 1 be embedded in form 11, the form 11 it is exhausted
Edge, thermal conductivity are good, can be used for testing video surveillance, it is preferred that the form 11 includes: the first form 11-1 and the second form
11-2, and the first form 11-1 and the second form 11-2 being arranged symmetrically in autoclave body 1.Preferably, the material of the autoclave body 1
For polyether-ether-ketone (PEEK).It is equipped with card slot 12 in the bottom of the kettle cover 2, sealing ring 12-1 is set on the card slot 12, it can
Ensure the leakproofness of the autoclave body 1.It is laid with air inlet 14 and gas outlet 13 on the kettle cover 2, in 14 He of air inlet
Admission line 14-1, outlet line 13-1 are furnished on gas outlet 13 respectively, can be experiment gas supply, pressure supply.
The dress sample cup 7 is placed in the built-in space of autoclave body 1, can with acid and alkali-resistance, can add different samples (for example,
Different drilling fluid materials), space is provided for the growth of hydrate, in the environment of simulation wellbore hole, carries out a variety of drilling fluid materials
Experiment, it is preferred that 7 material of dress sample cup be organic glass (PMMA).The cup lid 8 is equipped with cup aperture 8-1 (for example, ellipse
It is round), it is preferred that 8 material of cup lid is high-transparency nylon (PA).Preferably, the material of the cutting ferrule 10 is polysulfones
(PSF)。
The high voltage electric field device 31 includes: high voltage power supply 25, electrode plate 3, conductive column 4, and the high voltage power supply 25 exports
(for example, voltage is 0 to 50KV, output power 100W), support foreign current and voltage are shown continuously adjustable voltage, can be long-range
It controls to adjust, there is arcing defencive function.Preferably, the electrode plate 3 includes: electric pole plate 3-1 and lower electrode plate 3-2.It is excellent
Choosing, the material of the electric pole plate 3-1 and lower electrode plate 3-2 are 316L stainless steel.The electric pole plate 3-1 passes through several
Column 6 is connect with kettle cover 2, it is preferred that the quantity of the column 6 be three, respectively the first column 6-1, the second column 6-2 and
Third column 6-3.The lower electrode plate 3-2 is supported by electrodes base 9, is not directly contacted with the dress sample cup 7.Preferably, institute
The material for stating electrodes base 9 is polysulfones (PSF).
The conductive column 4 is fixed by fixing piece 5, it is preferred that the conductive column 4 includes: upper conductive column 4-1 and lower conduction
Column 4-2.Preferably, the material of the upper conductive column 4-1 and lower conductive column 4-2 are red copper.Preferably, the fixing piece 5 includes:
Upper fixing element 5-1 and lower fixing piece 5-2, it is furthermore preferred that fixed part 5-1 and lower fixing piece 5-2 is respectively upper fixed spiral shell
Silk and lower fixed screw.The upper conductive column 4-1 is fixed on kettle cover 2 by upper fixing element 5-1, and the upper conductive column 4-1 is worn
Electric pole plate 3-1 is connected after crossing kettle cover 2 and upper fixing element 5-1；The lower conductive column 4-2 is fixed on kettle by lower fixing piece 5-2
On body 1, the lower conductive column 4-2 connects lower electrode plate 3-2 after passing through autoclave body 1 and lower fixing piece 5-2, in the electric pole plate 3-
After 1 and lower electrode plate 3-2 is powered, high-voltage electrostatic field needed for can produce experiment.
The high voltage power supply 25 is connect by high-tension cable 25-1 with upper conductive column 4-1, is powered for the electric pole plate 3-1
High-voltage electrostatic field is formed, the lower electrode plate 3-2 ensures safety by lower conductive column 4-2 external connection ground line 29.The high pressure
Electric field arrangement 31 can carry out the experiment under the conditions of different electric field strengths, apply powering on for electric field by adjusting high voltage power supply 25
Built in pole plate 3-1, lower electrode plate 3-2, experiment can guarantee safe, long-term and lasting progress.It can be with mould using high-voltage electrostatic field
The electric field for the varying strength that quasi- clay mineral surface charge is formed, and it is tested to THF (tetrahydrofuran), CO2、CH4Equal hydrates
The influence of induction time and decomposition rate is formed, so as to differentiate influence of the reservoir CLAY MINERALS AND THEIR SIGNIFICANCE to gas hydrate synthesis, decomposition
And mechanism；Meanwhile different drilling fluid materials can be evaluated to the inhibition of hydrate and promote performance, it is hydrate drilling fluid materials
Preferably provide scientific reference.
The pressure that hydrate is generated and decomposed in the simulation of temperature and pressure control device 32 reservoir, acceptable accurate pressure control, and
Temperature control is carried out using Tempeerature-constant air form bath, provides an accurate temperature condition for simulated experiment, it can real-time detection hydrate
The temperature and pressure for generating and decomposing.The temperature and pressure control device 32 includes: insulating box 28, gas cylinder 20, Pneumatic booster platform 19, delays
Rush tank 18, drying chamber 17.The reaction kettle 30 is placed in insulating box 28, and insulating layer is laid in the insulating box 28, is kept
Temperature is constant.Gas in the gas cylinder 20 passes sequentially through Pneumatic booster platform 19, surge tank 18, drying chamber 17 and passes through kettle cover 1
Admission line 14-1, outlet line 13-1 be embodied as in kettle hydrate and generate gas supply, pressure supply.
The temperature and pressure control device 32 is additionally provided with several valves 15 and several pressure gauges 16, and the valve 15 includes:
First valve 15-1, the second valve 15-2 and third valve 15-3, the pressure gauge 16 include: first pressure gauge 16-1 and second
Pressure gauge 16-2.First pressure gauge 16-1 and the first valve are equipped on the connecting line of the gas cylinder 20 and Pneumatic booster platform 19
15-1, the drying chamber 17 are connect by admission line 14-1 with reaction kettle 30, and second is equipped on the admission line 14-1
Pressure gauge 16-2 and the second valve 15-2 is equipped with third valve 15-3 on the outlet line 13-1.
The video monitoring devices 33 include: camera 21 and light source 22, it is preferred that the cold light source 22 is LED cold light
Source.Preferably, the camera 21 is endoscope.The light source 22 penetrates first form 11-1 polishing in kettle on autoclave body 1,
The camera 21 shoots the case where hydrate in kettle is generated and decomposed by the second form 11-2.
The data acquisition device 34 includes: temperature sensor 23, pressure sensor 24, data acquisition device 26 and computer
27, the temperature sensor 23 and pressure sensor 24 distinguish hydrate under real-time monitoring different condition and generate, decompose whole process
Temperature, pressure value, the data acquisition device 26 can with the data of temperature collection sensor 23, pressure sensor 24, camera 21,
Computer 27 is transmitted and is stored in, the computer 27 handles it.The temperature sensor 23 includes: warm in kettle
Sensor 23-1 and the outer temperature sensor 23-2 of kettle are spent, the temperature in the kettle sensor 23-1, which is placed in, to be filled in sample cup 7 (for example, peace
It is placed on close to the bottom of dress sample cup 7), the outer temperature sensor 23-2 of the kettle is placed in insulating box 28.For example, the temperature sensing
- 20-200 DEG C of the measurement range of device 23, precision is up to 0.01 DEG C.The pressure sensor 24 is connected to the gas outlet 13 of autoclave body 1, institute
The measurement range 0-60MPa of pressure sensor 24 is stated, precision reaches 0.01MPa.Experimental data be divided into temperature in the kettle, pressure in kettle,
5 the outer temperature of kettle, voltage and current channels are by 17 automatic collection of data acquisition device 26 and computer, processing.
It is seen as shown in figure 5, being decomposed the embodiments of the present invention also provide gas hydrate synthesis under the conditions of a kind of high-voltage electrostatic field
The application method for surveying device, includes the following steps:
Step S11: check device air-tightness and safety: before sample installation, check whether are each sealing element and easily worn part
Intactly, for example, emphasis checks the leakproofness of the kettle cover 2 with 1 junction of autoclave body, the lower electrode plate 2-2 whether with ground
Line 29 connects；
Step S12: dress sample: experiment needs cleaning, the dry dress sample cup 7 first every time；Then sample is added, covers described
Cup lid 8, wherein fluid sample can not be filled it up with completely, prevent excessive；Finally tighten the kettle cover 2, the sealing on the kettle cover 2
Enclosing 12-1 needs the difference of foundation gas type, is replaced；
Step S13: device prepares: after the completion of dress sample, the reaction kettle 30 being put into insulating box 28, connects the high-voltage electricity
Pipeline (including the admission line 14-1, outlet line of field device 31, temperature and pressure control device 32 and data acquisition device 34
13-1, high-tension cable 25-1, ground wire 29 etc.), light source 22 and camera 21 are installed, the case lid of the insulating box 28 is closed, is opened
The data acquisition device 34 (including temperature sensor 23, pressure sensor 24, data acquisition device 26, computer 27 etc.)；
Step S14: ventilation: the first intake valve 15-1 is opened according to experimental program, by the gas in the gas cylinder 20
It is slowly introducing in kettle, experiment all should first arrange air in kettle every time；
Step S15: cooling: cooling down according to experimental program, it may be noted that being dropped every time according to ambient temperature when experiment cools down
Or rise to same initial temperature；
Step S16: before opening the high voltage power supply 25, each pipeline pressure regulation: is checked again for (for example, the ground wire 29
Deng), the high voltage power supply 25 is then opened, experiment demand voltage is slowly adjusted to, guards against electric current breakdown electric pole plate 3-1, lower electricity
Pole plate 3-2；
Step S17: observation: video, the temperature sensor 23 and pressure sensor based on the camera 21 shooting
24 temperature and pressures measured respectively are observed the generation of hydrate, are decomposed.
By above-mentioned experimental method, the present invention can be realized following functions: (1) simulating the generation of hydrate in reservoir, divides
Solution；(2) electric field for the varying strength that analog clay mineral surface charge is formed, tests its shadow to gas hydrate synthesis and decomposition
It rings；(3) analog wellbore environment tests generation or inhibiting effect of the different drilling fluid materials to hydrate.
Observation device in order to better understand the present invention, be described in detail below the reaction kettle 30 installation process and
The process of high-voltage electrostatic field test.Wherein the installation of the reaction kettle 30 includes the following steps:
Step S21: the fixed autoclave body 1 opens the kettle cover 2, sealing ring 12-1 is packed into the card slot 12 and is applied
Seal grease is smeared, the cup lid 8 is opened, sample is packed into the dress sample cup 7, tightens the kettle cover 2, by the reaction kettle 30
It is put into insulating box 28；
Step S22: the camera 21 for passing through the insulating box 28 connect with the second form 11-2, light source 22 and the first view
Window 11-1 connection；Air inlet 14 is connect with second pressure gauge 16-2 by admission line 14-1, is incited somebody to action by outlet line 13-1
Gas outlet 13 is connect with third valve 15-3；
Step S23: by conducting wire successively by the high-tension cable 25-1 of high voltage power supply 25 and upper conductive column 4-1, ground wire 29 with
Lower conductive column 4-2 connection.
High-voltage electrostatic field test includes the following steps:
Step S31: check device air-tightness: after installing the reaction kettle 30, closing the third valve 15-3, starting
With set the Pneumatic booster platform 19, successively open gas cylinder 20, the first valve 15-1, first pressure gauge 16-1, then open the
Two valve 15-2, second pressure gauge 16-2 open the data acquisition device 26, and experimental gas (for example, 10Mpa) is allowed to be passed through reaction
Kettle 30, the good standard of judgment means air-tightness are to remain constant in pressure 10 hours or more in kettle；
Step S32: after checking that air-tightness is intact, gas cylinder 20, the first valve 15-1, the successively air in displacement kettle: are closed
One pressure gauge 16-1, Pneumatic booster platform 19, the second valve 15-2, second pressure gauge 16-2 open third valve 15-3, to air
Exclude clean, closing third valve 15-3；
Step S33: ventilation: successively opening Pneumatic booster platform 19, gas cylinder 20, the first valve 15-1, first pressure gauge 16-1,
Second valve 15-2, second pressure gauge 16-2, are passed through experimental gas in kettle, after reaching experimental design pressure；Successively close gas
Bottle the 20, first valve 15-1, first pressure gauge 16-1, Pneumatic booster platform 19, the second valve 15-2, second pressure gauge 16-2.
Step S34: forming and decomposes: opening the incubator 28, camera 21, light source 22, reaches experiment to temperature in the kettle
It after the initial temperature of design, opens the high voltage power supply 25 and is adjusted to experimental design voltage, and start cooling and form hydrate, pass through
High pressure is studied in the observation of temperature and pressure and camera 21 that the temperature in the kettle sensor 23-1, pressure sensor 24 measure
Influence of the static field simulation clay mineral surface charge to gas hydrate synthesis；Similarly, after hydrate is formed completely, by described
The heating of insulating box 28 causes decomposition of hydrate, to study its influence to decomposition of hydrate.
Drilling fluid materials evaluation experimental step with it is above-mentioned consistent, notice that high voltage power supply 25 needs whole close in experiment.
The technical solution that the embodiment of the present invention provides has the benefit that (1) mixer design pressure is 0-
20MPa, lowest temperature are -20 DEG C, meet all kinds of gas hydrate synthesis and decomposition condition, while hydrate in energy simulated sea bottom reservoir
The environment for being formed and being decomposed；(2) the upper and lower electrode plate of high voltage electric field device is all placed in closed reaction kettle, high voltage power supply
It is adjusted and forms different electric field strengths between pole plate, simulate the electric field formed by clay mineral surface charge in different spaces position
The electric field strength set, influence of the comprehensive research clay mineral to gas hydrate synthesis and decomposition, easy to operate, safety；(3) sample is filled
Cup can be generated in cup using reaction kettle simulation wellbore hole environment with acid and alkali-resistance, decompose that hydrate is easy to operate, and high-efficient, energy is fastly
The performance of drilling fluid materials, is conducive to improve preferred efficiency when fast accurate evaluation hydrate simulation reality exploitation.
It is worth noting that: in the description of the present invention, " several " are meant that two or more, unless otherwise
Clear specific restriction.In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ",
Terms such as " fixations " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected,
It can be mechanical connection, for the ordinary skill in the art, can understand above-mentioned term at this as the case may be
Concrete meaning in invention.The connection types such as fixation described above are existing connection types well known to those skilled in the art, are lifted
The fixed forms such as glued, welding can be passed through for example.
Herein, the nouns of locality such as related front, rear, top, and bottom are to be located in figure with components in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field, it is characterised in that: include: reaction kettle, high voltage electric field
Device, temperature and pressure control device, video monitoring devices, data acquisition device；
The reaction kettle include: autoclave body, set on the autoclave body top kettle cover, be placed in the intracorporal dress sample cup of the kettle, fixed institute
State the cutting ferrule of dress sample cup；The top end opening of the autoclave body has a built-in space, the top end opening of the kettle cover sealing autoclave body, institute
It states dress sample cup to be placed in the built-in space of autoclave body, for filling sample；
The high voltage electric field device include: the electrode plate being placed in the reaction kettle, the conductive column being connect with the electrode plate, with
The high voltage power supply of the conductive column connection, provides high-voltage electrostatic field for the reaction kettle；
The temperature and pressure control device includes: insulating box, gas cylinder, the Pneumatic booster platform connecting with the gas cylinder and the pneumatic increasing
Present a theatrical performance as the last item on a programme connection surge tank, with the tank connected drying chamber of the buffering, it is the reaction kettle that the reaction kettle, which is placed in insulating box,
Different temperature is provided, the drying chamber connects reaction kettle, different pressure is provided for the reaction kettle；
The video monitoring devices include: the camera of gas hydrate synthesis and decomposition and for the reaction in the shooting reaction kettle
The light source of kettle polishing, the hydrate observed in the reaction kettle are generated or are decomposed；
The data acquisition device includes: the temperature sensor for measuring the reaction kettle internal and external temperature, measures outside the reaction kettle
The pressure sensor of pressure, the data acquisition device for acquiring data and the computer for handling data.
2. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 1, it is characterised in that:
The bottom of the kettle cover is equipped with card slot, sealing ring is arranged on the card slot to ensure the leakproofness of autoclave body.
3. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 1, it is characterised in that:
Form is embedded in the middle part of the autoclave body, the form includes: the first form and the second form, and the light source penetrates the first form toward kettle
Interior polishing, the camera shoot the generation and decomposition of hydrate in kettle by the second form.
4. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 1, it is characterised in that:
Air inlet and air outlet are laid on the kettle cover, are furnished with admission line, escape pipe respectively in the air inlet and air outlet
Line, the drying chamber connection admission line are gas supply, pressure supply in kettle.
5. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 4, it is characterised in that: institute
The connecting line for stating gas cylinder and Pneumatic booster platform is equipped with first pressure gauge and the first valve, and the is equipped on the admission line
Two pressure gauges and the second valve are equipped with third valve on the outlet line.
6. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 1, it is characterised in that: institute
Stating electrode plate includes: electric pole plate and lower electrode plate, and the conductive column includes: upper conductive column and lower conductive column；The high-voltage electricity
Source is connect by high-tension cable with upper conductive column, is powered for the electric pole plate, and the electric pole plate and lower electrode plate form height
Electrostatic field is pressed, the lower electrode plate is grounded by lower conductive column external connection.
7. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 6, it is characterised in that: institute
It states conductive column to fix by fixing piece, the fixing piece includes: upper fixing element and lower fixing piece, and the upper conductive column passes through upper solid
Determine part to be fixed on kettle cover, the lower conductive column is fixed on autoclave body by lower fixing piece.
8. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 6, it is characterised in that: institute
It states electric pole plate to connect by several columns with kettle cover, the lower electrode plate is supported by electrodes base.
9. gas hydrate synthesis decomposes observation device under the conditions of high-voltage electrostatic field according to claim 1, it is characterised in that: institute
Stating temperature sensor includes: temperature in the kettle sensor and the outer temperature sensor of kettle, and the temperature in the kettle sensor is placed in dress sample cup
In, the outer temperature sensor of the kettle is placed in insulating box.
10. decomposing the side that observation device is tested using gas hydrate synthesis under the conditions of high-voltage electrostatic field described in claim 1
Method, characterized by the following steps:
Check device air-tightness and safety: before sample installation, check whether each sealing element and easily worn part are intact；
Dress sample: experiment needs cleaning, dry dress sample cup first every time；Then sample is added, covers cup lid；Finally tighten kettle cover；
Device prepares: reaction kettle being put into insulating box, connects high voltage electric field device, temperature and pressure control device and data acquisition device
Pipeline installs light source and camera, closes the case lid of insulating box, opens data acquisition device；
Ventilation: the gas slowly in gas cylinder is passed through in kettle according to experimental program, reaches experimental design pressure；
Cooling: cooling down according to experimental program, drops or rise to same initial temperature according to ambient temperature every time；
Pressure regulation: before opening high voltage power supply, checking again for each pipeline, then open high voltage power supply, is slowly adjusted to experiment demand electricity
Pressure；
Observation: the temperature and pressure that video, temperature sensor and pressure sensor based on camera shooting measure respectively, observation
The generation of hydrate is decomposed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080750.7A CN109696537A (en) | 2019-01-28 | 2019-01-28 | Gas hydrate synthesis decomposes observation device and its method under the conditions of high-voltage electrostatic field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910080750.7A CN109696537A (en) | 2019-01-28 | 2019-01-28 | Gas hydrate synthesis decomposes observation device and its method under the conditions of high-voltage electrostatic field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109696537A true CN109696537A (en) | 2019-04-30 |
Family
ID=66234492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910080750.7A Pending CN109696537A (en) | 2019-01-28 | 2019-01-28 | Gas hydrate synthesis decomposes observation device and its method under the conditions of high-voltage electrostatic field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109696537A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110989015A (en) * | 2019-12-11 | 2020-04-10 | 中国地质科学院地球物理地球化学勘查研究所 | Hydrate synthesis reaction kettle and hydrate synthesis method |
| CN111561282A (en) * | 2020-05-08 | 2020-08-21 | 中国地质大学（武汉） | Core cutting device for natural gas hydrate under-pressure transfer system |
| CN113903236A (en) * | 2021-10-22 | 2022-01-07 | 中铁二院工程集团有限责任公司 | Intelligent temperature and pressure control difference water-rock action contrast monitoring experimental device and experimental method thereof |
| WO2022096025A1 (en) * | 2021-01-20 | 2022-05-12 | 中国科学院广州能源研究所 | Comprehensive testing device for impact of external field on physical properties of gas hydrate |
| CN115103817A (en) * | 2018-10-15 | 2022-09-23 | 爱尔兰国立都柏林大学 | System, method and generator for generating nanobubbles or nanodroplets under ambient conditions |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477093A (en) * | 2008-12-29 | 2009-07-08 | 中国科学院广州能源研究所 | Gas hydrate kinetic analysis apparatus |
| CN101532936A (en) * | 2009-04-14 | 2009-09-16 | 中国地质大学（武汉） | Method and device for evaluating inhibiting ability of drilling fluid on formation and decomposition of hydrate |
| CN101550816A (en) * | 2009-05-20 | 2009-10-07 | 中国科学院广州能源研究所 | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
| CN101718730A (en) * | 2009-12-04 | 2010-06-02 | 中国科学院广州能源研究所 | Method and device for measuring the resistivity of gas hydrate and hydrate-containing sediment in situ |
| CN102042998A (en) * | 2010-07-01 | 2011-05-04 | 青岛海洋地质研究所 | Hydrate formation kinetics simulation experiment device |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN109271679A (en) * | 2018-08-27 | 2019-01-25 | 华南理工大学 | A method of simulation extra electric field, which generates methane hydrate to decompose, to be influenced |
| CN209803129U (en) * | 2019-01-28 | 2019-12-17 | 中国地质大学（武汉） | Hydrate formation decomposition observation device under high-voltage electrostatic field condition |
-
2019
- 2019-01-28 CN CN201910080750.7A patent/CN109696537A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101477093A (en) * | 2008-12-29 | 2009-07-08 | 中国科学院广州能源研究所 | Gas hydrate kinetic analysis apparatus |
| CN101532936A (en) * | 2009-04-14 | 2009-09-16 | 中国地质大学（武汉） | Method and device for evaluating inhibiting ability of drilling fluid on formation and decomposition of hydrate |
| CN101550816A (en) * | 2009-05-20 | 2009-10-07 | 中国科学院广州能源研究所 | Three-dimensional exploitation simulated experiment apparatus for natural gas hydrate |
| CN101718730A (en) * | 2009-12-04 | 2010-06-02 | 中国科学院广州能源研究所 | Method and device for measuring the resistivity of gas hydrate and hydrate-containing sediment in situ |
| CN102042998A (en) * | 2010-07-01 | 2011-05-04 | 青岛海洋地质研究所 | Hydrate formation kinetics simulation experiment device |
| CN103645285A (en) * | 2013-12-17 | 2014-03-19 | 中国海洋石油总公司 | Visualized natural gas hydrate simulation test device and method |
| CN109271679A (en) * | 2018-08-27 | 2019-01-25 | 华南理工大学 | A method of simulation extra electric field, which generates methane hydrate to decompose, to be influenced |
| CN209803129U (en) * | 2019-01-28 | 2019-12-17 | 中国地质大学（武汉） | Hydrate formation decomposition observation device under high-voltage electrostatic field condition |
Non-Patent Citations (3)
| Title |
|---|
| MOHAMMAD REZA GHAANI 等: "Molecular-Dynamics Study of Propane-Hydrate Dissociation: Non-Equilibrium Analysis in Externally-Applied Electric Fields" * |
| SUN WEI 等: "Effects of dipole polarization of water molecules on ice formation under an electrostatic field" * |
| 梁德青 等: "微波对天然气水合物形成_分解过程的影响" * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115103817A (en) * | 2018-10-15 | 2022-09-23 | 爱尔兰国立都柏林大学 | System, method and generator for generating nanobubbles or nanodroplets under ambient conditions |
| CN110989015A (en) * | 2019-12-11 | 2020-04-10 | 中国地质科学院地球物理地球化学勘查研究所 | Hydrate synthesis reaction kettle and hydrate synthesis method |
| CN111561282A (en) * | 2020-05-08 | 2020-08-21 | 中国地质大学（武汉） | Core cutting device for natural gas hydrate under-pressure transfer system |
| WO2022096025A1 (en) * | 2021-01-20 | 2022-05-12 | 中国科学院广州能源研究所 | Comprehensive testing device for impact of external field on physical properties of gas hydrate |
| CN113903236A (en) * | 2021-10-22 | 2022-01-07 | 中铁二院工程集团有限责任公司 | Intelligent temperature and pressure control difference water-rock action contrast monitoring experimental device and experimental method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109696537A (en) | Gas hydrate synthesis decomposes observation device and its method under the conditions of high-voltage electrostatic field | |
| CN109236243B (en) | Three-dimensional comprehensive reservoir hydrate simulation analysis system and analysis method | |
| CN202305523U (en) | Diagenesis simulated experiment device | |
| CN201637726U (en) | Handheld gas chromatograph | |
| CN102435716A (en) | Diagenesis simulation experiment device | |
| CN105093074B (en) | A kind of experimental rig for measuring air pressure and crosslinked polyethylene electric branch growth characteristics being influenceed | |
| CN103927921B (en) | Hydrate Multi-functional analog experimental system under microbial action | |
| CN109557252B (en) | Comprehensive hydrate simulation system | |
| CN1664559A (en) | Dynamic high-temperature and pressure electro-chemical measurement experimental device | |
| CN107091817A (en) | Full spectrum in-situ characterization and combination experimental provision and method under Mars simulated environment | |
| CN206773155U (en) | Secondary cell thermal runaway test device | |
| CN109632868A (en) | A kind of closed system hydrocarbon thermal simulation experiment device and its application method | |
| CN102435539A (en) | High temperature seepage test device and method | |
| CN109632573A (en) | One kind is for supercritical pressure fluid flowing heat transfer visual experimental apparatus under the conditions of uniform heat flux | |
| CN209803129U (en) | Hydrate formation decomposition observation device under high-voltage electrostatic field condition | |
| CN104535113B (en) | Electric heating tube testing method | |
| CN103234832A (en) | Portable plastic pipe pressure endurance testing apparatus and application method thereof | |
| CN103927913A (en) | Deep stratum environment carbon dioxide geological sequestration simulation experiment system | |
| CN103808543B (en) | Self-heating substance heat reaction testing system | |
| CN108957254A (en) | Insulator surface flashover characteristics experimental provision and method under a kind of electric heating Composite Field | |
| CN205484152U (en) | Experimental device for calorimetry is measured gaseously than level pressure thermal capacitance | |
| CN104977224B (en) | A kind of phased desorption instrument of high temperature | |
| CN104407233B (en) | Hydrate dielectric property test device in a kind of deposit | |
| CN204945070U (en) | A kind of flash point tester for minisize oil plants with alarm function | |
| CN205607817U (en) | Similar material permeability testing experiment platform of many field couplings |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |