CN208043777U - Hydrate generates the simulator of laws for plugging in gravel packing zone - Google Patents

Abstract

The utility model is related to exploitation of gas hydrates analogue experiment installations, the simulator of laws for plugging is generated more particularly to hydrate in a kind of gravel packing zone, it includes gravel packing zone analog module, mixes defeated module, temperature control module and supplying module, gravel packing zone analog module and mixed defeated module are arranged in temperature control module, and composition circuit is connected to by pipeline between gravel packing zone analog module and mixed defeated module, supplying module is connected to mixed defeated module by pipeline；Include acquiring measurement module for acquiring the data of the pressure data of gravel packing zone analog module, temperature data and image data.The utility model simulator is under the conditions of visualization, the secondary generation of hydrate, enrichment and laws for plugging in observation gravel layer in real time, to provide basic data for the formulation that gas hydrates pilot production well cobble-stone filling layer material is preferred, gravel packing zone adds epidermis factor evaluation and accurate decompression scheme, provide safeguard for the continuously steady production of exploitation of gas hydrates well.

Description

Hydrate generates the simulator of laws for plugging in gravel packing zone

Technical field

The utility model is related to exploitation of gas hydrates analogue experiment installations, and in particular to water in a kind of gravel packing zone Close the simulator that object generates laws for plugging.

Background technology

Gas hydrates are the unconventional energy resource that a kind of distribution is wide, energy resource density is high, and it is not to be developed and utilized to it Carry out research topic important for a period of time.With the success of China's Gas Hydrate In Sea Areas pilot production for the first time in 2017, with marine site The relevant technology of natural gas hydrate resources pilot production enters the stage of flourishing.However, for China's South China Sea generally existing Shale flour sand type gas hydrates reservoir, no matter conventional voltage drop method exploitation or the formation fluid based on three-phase control theory Extraction method is all inevitably related to stratum fine grained, the especially migration and production of shale particle.Effectively controlling sand measure is Ensure shale particle smoothly discharge while otherwise necessary means of the bulky grains such as Foraminiferal Shell discharge to maintain reservoir to stablize.Cause Which kind of mining type no matter this, take, and exploitation of gas hydrates well is all inevasible to need certain control sand measure, in well Bottom installation control sand medium, to alleviate stratum silt particle output engineering risk caused by entire production system.

Japan in 2013 is in Nankai Trough carry out global Gas Hydrate In Sea Areas pilot production for the first time, using bore hole Gravel filling control sand measure.Japan in 2017 carries out its second of Gas Hydrate In Sea Areas pilot production in Nankai Trough and makees When industry, the Geoform sand control screens formed using base tube+coated sand carry out control sand operation.China announced on May 18th, 2017 The whole world is realized for the first time in the message of shale flour sand gas hydrates reservoir success pilot production, this pilot production is prefilled with using novel Screen casing carries out control sand.To sum up, either outside casing gravel packing, or it is Geoform screen casings or novel restraining liner, wherein The control sand unit of most critical is exactly gravel packing zone.

Currently, since hydrate secondary generation in shaft bottom causes gravel to fill during all previous gas hydrates pilot production in the whole world The even completely plugged phenomenon still unobvious of layer permeability decrease.However, during practical exploitation of gas hydrates, as The gravel packing zone of sand block medium may be completely exposed in hydrate stable region, and objective reality hydrate is in gravel packing zone Secondary formation and block risk.The hydrate influence of secondary generation to hydrate well capacity in gravel packing zone is similar to mud The influence that matter ingredient is migrated, blocked.Gravel packing zone will be caused to add the increase of skin factor, seriously affect natural gas hydration The production capacity of object.Therefore the evaluation of gravel packing zone operating mode is in addition to conventional erosion, corrosion, the bigger faced in hydrate recovery well The problem of be in gravel packing zone due to shale accumulation and the secondary generation of hydrate caused by block.Patent publication No. CN106932170A discloses evaluating apparatus and the evaluation of a kind of migration laws for plugging of silt particle fine grained in gravel packing zone Method causes production capacity to decline evaluation and provides think of for the fine graineds such as hydrate layer output shale accumulated plugging in gravel packing zone Road, but at present still epidermis is added not specifically for the secondary Conduce Disciplinarian of hydrate in gravel packing zone and its to control sand measure The simulator of index impacts rule.Patent publication No. CN205643176U is provided to be hydrated in a kind of isometrical production tubing of routine The secondary visual experimental apparatus for generating risk assessment of object provides for the secondary generation laws for plugging evaluation of hydrate under different operating modes Certain reference, but the device cannot be satisfied the demand that risk assessment is blocked specifically for gravel packing zone.Therefore, in reality It is practical to the evaluation method of hydrate reservoir production capacity affecting laws about gravel packing zone in the gas hydrates test mining project of border The upper influence for not accounting for the secondary generation of hydrate completely at present, hydrate secondary shadow generated to reservoir productivity in gravel layer It rings evaluating apparatus and method is in space state.

In conclusion under the premise of ensureing that gravel packing zone control sand does not fail, gravel packing zone produces hydrate recovery well The influence of energy is mainly manifested in shale and blocks and secondary two aspect of generation blocking of hydrate.Study different gravel packing zone internal waters Closing influence of the Conduce Disciplinarian of object for preferred gravel packing zone material type, evaluation gravel packing zone to production capacity has to pass weight The effect wanted.In addition, find out hydrate generates enrichment discipline in gravel layer, for accurately formulating exploitation of gas hydrates well Decompression scheme ensures that hydrate production capacity will not be influenced with important indicative significance because of control sand filter medium clogging during pilot production.

Utility model content

In order to study the secondary generation laws for plugging of gas hydrates in gravel-pack, the utility model provides a kind of gravel Hydrate generates the simulator of laws for plugging in stone filling layer, which can in real time observe under the conditions of visualization The secondary generation of hydrate, enrichment and laws for plugging in gravel layer, to be gas hydrates pilot production well cobble-stone filling layer material Choosing, the additional epidermis factor evaluation of gravel packing zone and the formulation offer basic data for being precisely depressured scheme of fine quality, to be natural The continuously steady production of gas hydrate recovery well provides safeguard.

To achieve the goals above, the utility model adopts the following technical solution：Hydrate generates stifled in gravel packing zone The simulator of feeler gauge rule comprising gravel packing zone analog module mixes defeated module, temperature control module and supplying module, the gravel It stone filling layer analog module and mixes defeated module and is arranged in temperature control module, and the gravel packing zone analog module and mixed defeated Composition circuit is connected to by pipeline between module, the supplying module is connected to mixed defeated module by pipeline；It further includes being used for Acquire the pressure data of gravel packing zone analog module, the data acquisition measurement module of temperature data and image data.

Further, the temperature control module is step-by-step movement cryogenic thermostat module.

Further, the gravel packing zone module includes transparent high-voltage tube, and granular materials is filled in the high-voltage tube, The arrival end of high-voltage tube is equipped with current divider, and outlet end is equipped with porous web plate；The both ends of the high-voltage tube are both provided with end cap, The end cap of high-voltage tube both sides is connected by connecting hoop and is fastened；The arrival end of the high-voltage tube and outlet end are connected by high-pressure hose It is connected to mixed defeated module；The high-voltage tube is arranged on runing rest.

Further, the high-voltage tube is sapphire transparent high-voltage tube.

Further, the aperture of the porous web plate is less than the size of granular materials.

Further, the high-voltage tube and end cap are in contact side wall and it is both provided with high-pressure seal ring on end face.

Further, the mixed defeated module includes air and liquid mixer, magnetic agitation instrument, high pressure coil pipe, circulating pump and vacuum Pump, the magnetic agitation instrument are arranged in the lower section of air and liquid mixer, and the high pressure coil pipe is arranged in air and liquid mixer inner upper, It is provided with hole, is connected with the inside of air and liquid mixer, the outlet of the high pressure coil pipe is connected to gravel by circulating pump The entrance of the arrival end of filling layer analog module, the high pressure coil pipe is connected to gravel packing zone analog module outlet end；It is described It is also associated with vacuum pump on high pressure coil pipe.

Further, the supplying module includes gas cylinder group, water feeding tank and from motion tracking piston container, the high pressure Gas cylinders group and water feeding tank are connected by pipeline with air and liquid mixer respectively, described from motion tracking piston container and air and liquid mixer phase Connection.

Further, the data acquisition measurement module includes differential pressure pick-up, pressure sensor, temperature sensor, light Camera and high-speed camera are learned, the differential pressure pick-up is used to acquire the pressure difference at gravel packing zone both ends, the pressure sensing Device is used to acquire the pressure value at the entrance and exit of gravel packing zone analog module, and the temperature sensor is for acquiring gravel Temperature value at the entrance and exit of filling layer analog module, the optical camera capture a certain moment natural gas for pinpointing Formation form of the hydrate in gravel packing zone, the high-speed camera for acquiring gas-liquid two-phase in gravel packing zone in real time When middle flowing, the real-time moment of gas hydrates generates situation.

Hydrate generates the simulator of laws for plugging in the gravel packing zone of the utility model, can be in visualization condition Under, the secondary generation of gas hydrates, enrichment and laws for plugging in gravel packing zone are observed in real time, to be gas hydrates Pilot production well cobble-stone filling layer material is preferred, gravel packing zone adds epidermis factor evaluation and precisely the formulation of decompression scheme provides Basic data, to provide safeguard for the continuously steady production of exploitation of gas hydrates well.And practical gas hydrates are tried Adopt well cobble-stone filling layer material generation laws for plugging sensitivity assessment secondary to hydrate, the secondary generation risk conditions of hydrate Adverse effect degree and consideration gas hydrates in gravel packing zone secondary generation engineering of the lower gravel packing zone to production capacity The decompression solution formulation of risk provides foundation.

In addition, the simulator of the utility model, has further the advantage that：

(1) the gravel packing zone analog module can be simulated by the adjusting of runing rest and the cooperation of high-pressure hose The generation, enrichment of hydrate and laws for plugging in gravel packing zone under the conditions of different seepage directions correspond to the examination of practical hydrate Well is adopted, when may be implemented under the conditions of a variety of well type such as vertical well, inclined shaft, horizontal well using gravel packed type control sand operation, gravel Hydrate generates the evaluation of laws for plugging in layer；

(2) the gravel packing zone analog module coordinates differential pressure using sapphire transparent pipe as simulation gravel layer cavity Sensor measurement, can be from qualitative and quantitative generation situation of two angle analysis hydrates in gravel layer to gravel packed type The responsiveness that sand measure adds skin factor is controlled, hydrate can be especially observed by high-speed camera in gravel layer Transient state accumulation blocks process；

(3) whole system pressure resistance 15MPa disclosure satisfy that the practical gas hydrates pilot production well bottom pressure operating mode of simulation Demand meets 1:1 experimental simulation, directive significance of the enhancing analog result to site operation；

(4) high-pressure hose surface layer of the present invention contains insulating layer, prevents in temperature-fall period hydrate preferentially in delivery pipe It is generated in road, influences the evaluation of Hydrate Plugging rule in gravel layer.

Description of the drawings

Fig. 1 is the modular structure schematic diagram of the utility model；

Fig. 2 is the structural schematic diagram of gravel packing zone analog module；

Fig. 3 is the structural schematic diagram of mixed defeated module and supplying module.

In figure:1- gravel packing zone analog modules；2- temperature control modules；3- mixes defeated module；4- supplying modules；5- data acquire Measurement module；6- high-voltage tubes；7- end caps；8- connecting hoops；9- current dividers；10- high-pressure seal rings；11- simulates pack gravel layer； 12- perforated baffles；13- high-pressure hoses；14- runing rests；15- circulating pumps；16- vacuum pumps；17- is from motion tracking piston container； 18- high pressure coil pipes；19- gas cylinder groups；20- water feeding tanks；21- air and liquid mixers；22- magnetic agitation instrument.

Specific implementation mode

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only explaining this Utility model is not used to limit the utility model.

Hydrate generates the simulator of laws for plugging in the gravel packing zone of the utility model, as shown in Figure 1, including gravel Stone filling layer analog module 1, mixed defeated module 3, temperature control module 2, supplying module 4 and data acquire measurement module 5.Wherein, temperature control Module 2 is step-by-step movement cryostat, and cryogenic thermostat environment is provided for gravel packing zone analog module 1 and mixed defeated module 3.It is described Gravel packing zone analog module 1 and mixed defeated module 3 are arranged in temperature control module 2, and the gravel packing zone analog module 1 And it mixes and passes through pipeline connection composition circuit between defeated module 3.The supplying module 4 is connected to mixed defeated module 3 by pipeline, is used for High pressure methane gas and water are supplied into mixed defeated module 3.The data acquisition measurement module 5 is for acquiring gravel packing zone simulation Pressure data, temperature data and the image data of module 1.

As shown in Fig. 2, the gravel packing zone analog module 1 includes transparent high-voltage tube 6, the high-voltage tube 6 is sapphire Transparent high-voltage tube, pressure resistance be 15MPa, internal diameter 20mm, length 40-80mm, specific length can be needed according to actual tests into Row selection.It is filled with granular materials in the high-voltage tube 6, forms simulation gravel packing zone 11.Granular materials can be conventional Quartz sand, sintering ceramsite, walnut shell or various types of coated sand (containing consolidated sand containing Geoform).The arrival end of high-voltage tube 6 Current divider 9 is installed, outlet end is equipped with perforated baffle 12, and the aperture of perforated baffle 12 is less than the size of granular materials.It is described The both ends of high-voltage tube 6 are both provided with end cap 7, and metal end, the end cap 7 of 6 both sides of high-voltage tube is generally selected to be connected by connecting hoop 8 Fastening, the arrival end of the high-voltage tube 6 and outlet end are connected to mixed defeated module 3 by high-pressure hose 13.6 He of the high-voltage tube Side wall that end cap 7 is in contact and it is both provided with high-pressure seal ring 10 on end face, forms sealing dual fail-safe.The setting of high-voltage tube 6 is being revolved Turn on holder 14, runing rest 14 enables dummy level flowing, perpendicular flow or appoint for fixed and rotary high pressure pipe 6 The secondary generation, enrichment of hydrate, laws for plugging in gravel layer under the conditions of oblique flow of anticipating.

The main function for mixing defeated module 3 is to vacuumize to gravel packing zone analog module 1 before testing, filled to gravel Layer analog module 1 injects methane, water fluid-mixing, provides pressure environment, the gas liquid ratio environment used in simulated experiment.Such as Fig. 3 institutes Show, the mixed defeated module 3 includes air and liquid mixer 21, magnetic agitation instrument 22, high pressure coil pipe 18, circulating pump 15 and vacuum pump 16 And corresponding valve is constituted.The magnetic agitation instrument 22 is arranged in the lower section of air and liquid mixer 21, passes through magnetic agitation instrument 22 Rotation so that high pressure methane gas in air and liquid mixer 21 and water is sufficiently mixed.The high pressure coil pipe 18 is arranged in gas-liquid mixed 21 inner upper of device, is provided with hole, is connected with the inside of air and liquid mixer 21, sucks in air and liquid mixer 21 through overmulling Close uniform gas-liquid mixture fluid；The outlet of the high pressure coil pipe 18 is connected to gravel packing zone analog module by circulating pump 15 1 arrival end controls fluid-mixing flow velocity by circulating pump 15, fluid-mixing is made to flow into gravel packing zone analog module 1.It is described The entrance of high pressure coil pipe 18 is connected to 1 outlet end of gravel packing zone analog module, forms flow circuits.The high pressure coil pipe 18 On be also associated with vacuum pump 16, for being vacuumized to gravel packing zone analog module 1 before testing.

As shown in figure 3, the supplying module 4 includes gas cylinder group 19 and water feeding tank 20,19 He of gas cylinder group Water feeding tank 20 is connected by pipeline with air and liquid mixer 21 respectively, is supplied, is supplied water into air and liquid mixer 21.It is described from motion tracking Piston container 17 is connected with air and liquid mixer 21, due to two of hydrate in gravel packing zone analog module 1 in experimentation Secondary generation may lead to the pressure reduction of system, in order to maintain system pressure constant, by ensureing from motion tracking piston container 17 Internal system pressure is invariable.

The data acquisition measurement module 5 includes differential pressure pick-up, pressure sensor, temperature sensor, optical camera With high-speed camera and corresponding data, video acquisition software.The differential pressure pick-up is for acquiring gravel packing zone both ends Pressure difference, generally, differential pressure pickup upstream and downstream end are mounted on the both ends of simulation gravel packing zone 11, for measuring hydrate in gravel Layer in formed, enrichment, block during pressure difference variation.The pressure sensor is for acquiring gravel packing zone analog module 1 Entrance and exit at pressure value, the temperature sensor is used to acquire the entrance and exit of gravel packing zone analog module 1 The temperature value at place, generally, pressure sensor, temperature sensor are separately mounted to 1 upstream and downstream of gravel packing zone analog module correspondence Position, for observing gas hydrate synthesis in gravel layer, enrichment, blocking conditional critical Temperature-pressure Conditions, to be natural gas The formulation that hydrate pilot production well is finely depressured scheme provides critical risk point.The optical camera captures certain for the moment for pinpointing Formation form of the gas hydrates in gravel packing zone is carved, the high-speed camera for acquiring gas-liquid two-phase in gravel in real time When being flowed in stone filling layer, the real-time moment of gas hydrates generates situation.

The experimental procedure of above-mentioned experimental provision is：

(1) selection pack gravel layer and mounting device：Selection carries out the simulation gravel layer material that simulation uses, and loads Into in sapphire transparent high-voltage tube 6, and current divider 9, perforated baffle 12, golden end cap 7, connecting hoop 8 are installed successively, it is soft by high pressure Pipe 13 connects above-mentioned gravel packing zone analog module 1, mixed defeated module 3 and supplying module 4 with valve, connects data acquisition and measures Module 5 simultaneously opens temperature control module 2；

(2) it vacuumizes and is fed with gas-liquid：It closes supplying module 4 and mixes the valve between defeated module 3, connect gravel packing zone Analog module 1 and mixed defeated module 3, open the vacuum pump 16 mixed in defeated module 3, to circulatory system vacuumize process；Open supply Module 4 and the valve between defeated module 3 is mixed, gravel packing zone analog module 1 is closed and mixes the valve between defeated module 3, to mixed Air-liquid is injected according to a certain percentage in defeated module 3, so that system pressure is reached the experimental pressure of setting, is then shut off supplying module 4。

(3) gas-liquid delivery is simulated：Start the magnetic agitation instrument 22 for mixing defeated module 3, gas-liquid is made to be sufficiently mixed.Gravel is connected to fill Packing course analog module 1 and mixed defeated module 3, set 15 pump speed of circulating pump, play pump circulation.At the same time, temperature control module 2 is opened, if Constant temperature angle value (such as 2 DEG C) cools down to whole system；If there is generation of the gas hydrates in gravel layer in the process, The reduction for then leading to system pressure is maintained from motion tracking piston container 17 by tracking system pressure according to experiment demand selection Pressure in whole experiment process in air and liquid mixer 21 is constant or pressure decays automatically with the generation of hydrate；

(4) data acquisition and identification：During step (3), implement acquisition the circulatory system in pressure, pressure difference, temperature and Image, video data.

Particularly, what simulated experiment that the present apparatus was related to judge terminated is flagged with following three kinds：1. when simulation gravel filling When the pressure difference of 11 both sides of layer increases to 5 times of initial pressure difference or more, show the generation in gravel layer due to hydrate, Serious blocking is caused, experiment is stopped；2. when leading to 15 displacement pressure of circulating pump since hydrate is formed in gravel packing zone Power rises, and when whole system pressure value reaches 14MPa, close to system safety pressure resistance, stops experiment；3. when according to experiment demand, When selection maintains the work of system pressure constant-mode from motion tracking piston container 17, hydrate production quantity is enough to cause piston to hold Device is not enough to when maintenance system pressure (piston container plunger top is to the end), show system gas, water shortage to cause gravel bed water It closes object and generates blocking, stop experiment.

Based on above-mentioned experimental provision and method, following function may be implemented in the present invention：

(1) faced by simulating the different gravel packing materials secondary generation of hydrate under certain condition of same particle size distribution The difference of boundary's condition and hydrate enrichment chocking-up degree, is preferably applied to the gravel filling material of practical exploitation of gas hydrates well Matter.Such as two kinds of fillers of A, B of same particle size, if by simulated experiment prove in A materials hydrate it is secondary generate it is critical Condition is less than B, and being generated since hydrate is secondary causes the pressure difference climbing speed of later stage A filling layer both sides to be more than B, illustrates A It is unfavorable for maintaining hydrate exploitation well capacity and is easier to lead to test mining project risk, then preferred B is used as practical gas water Close the gravel packing zone material of object pilot production well；

(2) increase of the production quantity with hydrate in gravel layer, gravel layer permeability can reduce, and show experiment ginseng It is the increase for simulating 11 both sides pressure drop of gravel packing zone on number.Therefore, the present invention can be secondary by recording hydrate in real time The variation of gravel packing zone parasitic pressure drop under formation condition, foundation consider that hydrate is secondary in controlling sand medium and generate to hydrate Exploit the evaluation method that well capacity influences；

(3) in practical hydrate pilot production, the formulation for being depressured scheme needs to consider certain hydrate occuring regularity condition The flow assurance condition in lower shaft bottom.The present invention can be by simulating hydrate in the various sizes of gravel packing zone of same material Secondary generation, enrichment and laws for plugging judge the secondary critical temperature value for generating blocking of hydrate under the conditions of different gravels fillings And pressure value, the formulation to being depressured scheme provide critical risk and prompt point.It is real by simulating such as the gravel packing zone that grain size is C Verify it is bright when bottom pressure be XMPa, Y DEG C when, hydrate it is secondary generation cause parasitic pressure drop rise be 50%, illustrate the temperature Hydrate production well capacity is most likely resulted under degree pressure condition to be reduced, therefore when formulating decompression scheme, it is necessary to assure well The real time temperature at bottom is higher than Y DEG C or real-time pressure is less than XMPa.

It should be understood that for those of ordinary skills, it can be modified or changed according to the above description, And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.

Claims (9)

1. hydrate generates the simulator of laws for plugging in gravel packing zone, which is characterized in that it includes gravel packing zone mould Quasi- module mixes defeated module, temperature control module and supplying module, and the gravel packing zone analog module and mixed defeated module are arranged at temperature It controls in module, and composition circuit, the confession is connected to by pipeline between the gravel packing zone analog module and mixed defeated module Mixed defeated module is connected to by pipeline to module；It further includes for acquiring the pressure data of gravel packing zone analog module, temperature The data of degrees of data and image data acquire measurement module.

2. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 1, which is characterized in that The temperature control module is step-by-step movement cryogenic thermostat module.

3. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 1, which is characterized in that The gravel packing zone analog module includes transparent high-voltage tube, and granular materials, the entrance of high-voltage tube are filled in the high-voltage tube End is equipped with current divider, and outlet end is equipped with porous web plate；The both ends of the high-voltage tube are both provided with end cap, high-voltage tube both sides End cap is connected by connecting hoop and is fastened；The arrival end of the high-voltage tube and outlet end are connected to mixed defeated mould by high-pressure hose Block；The high-voltage tube is arranged on runing rest.

4. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 3, which is characterized in that The high-voltage tube is sapphire transparent high-voltage tube.

5. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 3, which is characterized in that The aperture of the porous web plate is less than the size of granular materials.

6. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 3, which is characterized in that Side wall that the high-voltage tube and end cap are in contact and it is both provided with high-pressure seal ring on end face.

7. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 1 or 3, feature exists In the mixed defeated module includes air and liquid mixer, magnetic agitation instrument, high pressure coil pipe, circulating pump and vacuum pump, the magnetic agitation Instrument is arranged in the lower section of air and liquid mixer, and the high pressure coil pipe is arranged in air and liquid mixer inner upper, is provided with hole, with The inside of air and liquid mixer is connected, and the outlet of the high pressure coil pipe is connected to gravel packing zone analog module by circulating pump The entrance of arrival end, the high pressure coil pipe is connected to gravel packing zone analog module outlet end；It is also connected on the high pressure coil pipe There is vacuum pump.

8. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 7, which is characterized in that The supplying module includes gas cylinder group, water feeding tank and divides from motion tracking piston container, the gas cylinder group and water feeding tank It is not connected with air and liquid mixer by pipeline, it is described to be connected from motion tracking piston container with air and liquid mixer.

9. hydrate generates the simulator of laws for plugging in gravel packing zone according to claim 8, which is characterized in that The data acquisition measurement module includes differential pressure pick-up, pressure sensor, temperature sensor, optical camera and high-speed camera Machine, the differential pressure pick-up are used to acquire the pressure difference at gravel packing zone both ends, and the pressure sensor is for acquiring gravel filling Pressure value at the entrance and exit of layer analog module, the temperature sensor is for acquiring entering for gravel packing zone analog module The temperature value of mouth and exit, the optical camera capture a certain moment gas hydrates in gravel packing zone for pinpointing In formation form, the high-speed camera in real time acquire gas-liquid two-phase flowed in gravel packing zone when, gas water The real-time moment for closing object generates situation.