CN109599021B - A kind of geologic reservoir radial flow simulator - Google Patents
A kind of geologic reservoir radial flow simulator Download PDFInfo
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- CN109599021B CN109599021B CN201811301889.1A CN201811301889A CN109599021B CN 109599021 B CN109599021 B CN 109599021B CN 201811301889 A CN201811301889 A CN 201811301889A CN 109599021 B CN109599021 B CN 109599021B
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Abstract
The present invention provides a kind of geologic reservoir radial flow simulator, comprising: has the radial simulation chamber of cylindrical cavity；For simulating recovery well and the insertion intracorporal hollow simulation wellbore hole of cylindrical cavity；The bellows that pressure is covered for simulating the stratum being applied on porous media cover pressure loading sleeve；For measuring the parameter measurement system of porous media data in different simulated experiments；The data acquisition process unit of data acquisition, analysis and result output is realized while controlling experimentation to different experimentations.The present invention by quantitatively injecting gas, liquid formation hydrate in proportion, the synthesis process of hydrate under analog stratum, by the decomposition for the simulating hydrate that is depressured or heats up, the layer of sand misalignment covered under press strip part after hydrate exploitation is simulated by centainly covering pressure to the layer of sand application after decomposition of hydrate.
Description
Technical field
The present invention relates to geology field, in particular to the stratum after a kind of simulated formation decomposition of hydrate is covered under the conditions of pressure
Radial Flow Through Porous Media model equipment.
Background technique
Since this century, the whole world all recognizes that gas hydrates are a kind of cleaning energy for substituting conventional fossil fuel
Source.The whole world is it has been found that hydrate mineral reserve point is more than at 200, and with current energy-consuming trend, only the hydrate of exploitation 15% is just
It is used 200 years as long as the whole world.But the stabilization Temperature-pressure Conditions of its own formation, determine the particularity of its mining method,
In addition the influence with environment is need further to assess in its recovery process.Therefore, the research to hydrate exploitation at present
In addition to the runin that a few countries and area carried out individual well or single well group is adopted, overwhelming majority research is also in laboratory physics
The stage of simulation and numerical simulation.
Currently in order to developing and utilizing to the huge energy of this reserves, researcher proposes many methods:
1. heat injection method: being heated to decompose on equilibrium temperature by hydrate using injection hot water, steam or hot salt brine；
2. voltage drop method: below the pressure reduction of hydrate hiding to balance decomposition pressure；
3. chemical agent method: injection chemical agent, for example methanol or ethylene glycol are to change hydrate equilibrium formation condition.
The research of research thermal stimulation methane hydrate is only limitted to one-dimensional long cores clamping in experiment both at home and abroad at present
Device, the simulation of second vertical well.However hydrate exploitation is no different with conventional gas and oil, is equally that a three-dimensional seepage field pressure constantly drops
Low process.In order to which different exploitation sides in the synthesis, decomposition and recovery process of hydrate are grasped in more authentic and valid understanding
Reservoir properties, temperature, pressure, change of production rule etc. under the conditions of formula, different exploitation well groups influence the important sensitive ginseng of pilot production
Number needs the simulation of multifunction three-dimensional hydrate extracting experiment, with studied comprehensively on three dimension scale hydrate generation and
Decomposition behavior.And now the field of developing lack one kind can the comprehensive processing set gas hydrates exploitation simulated experiment dress
It sets, to study synthesis indoors to China's land-based area permafrost region test core, decompose gas hydrates mechanism, and to grasp land
Reservoir properties, temperature, pressure, yield during the hydrate pilot production of domain under the conditions of different development schemes, different exploitation well groups
The important sensitive parameter that changing rule etc. influences pilot production provides the support in terms of physical analogy.
Summary of the invention
Particularly, the present invention provides the stratum after a kind of simulated formation decomposition of hydrate and covers Radial Flow Through Porous Media mould under the conditions of pressure
Type device.
Specifically, a kind of geologic reservoir radial flow simulator provided by the invention, comprising:
Radial simulation chamber, is used to fill the cylindrical cavity of sea bottom hydrate reservoir shale flour sand porous media including both ends open
Body, is bolted the upper cover plate and lower cover plate of closing cylindrical cavity both ends open respectively, and lower cover plate is contacted with cylindrical cavity
Be provided on one side protrusion and squeeze station identical with cylindrical cavity internal diameter, the center point of upper cover plate be provided with through hole；
Hollow simulation wellbore hole is inserted into the intracorporal pit shaft of cylindrical cavity for simulating recovery well, including by the through hole, will
Pit shaft is limited in the spring capping at upper cover plate；The pit shaft is protruded into be provided on the intracorporal side wall of cylindrical cavity and be communicated with outside
Through-hole, the spring capping include that one end is the tube body that the open end other end is closed end, and tube body is using opening end cap in pit shaft
Open end is fixed on upper cover plate by bolt after stretching out one end of cylindrical cavity, is provided in the closed end of tube body and is stretched for pit shaft
Through-hole out is equipped with the spring covered outside pit shaft, and the regulating nut by being threaded on pit shaft in the inside of tube body, adjusts
Nut is saved using the relative position with closed end come the elastic force of adjustment spring；
Bellows cover pressure loading sleeve, pressure are covered for simulating the stratum being applied on porous media, including rubber closed at one end
Set improves the pressing ring and righting circle of rubber sleeve sealing performance, and the displacement sensor of measurement rubber sleeve displacement；Rubber sleeve passes through spiral shell
Line is screwed on the squeeze station of lower cover plate, and an enclosure space is formed between lower cover plate, and displacement sensor is extended back across lower cover plate
Enter the enclosure space；
Parameter measurement system, for measuring porous media data in different simulated experiments, the bellows including measuring pressure
Manograph, the temperature sensor for measuring temperature and the electrode for measuring resistance, are provided with multiple through-holes, bellows on lower cover plate
Manograph, the temperature sensor, motor are mounted in a through-hole simultaneously or disperse to be mounted in different through-holes；
Data acquisition process unit, the control system including having data processing software, while controlling experimentation
Data acquisition, analysis and result output are realized to different experimentations.
In an embodiment of the invention, be also equipped with inside the spring capping sealing pit shaft with it is described
The fixing piece of connecting sewing between upper cover plate, fixing piece include covering using the pressing sleeve that bolt is fixed outside the pit shaft, and be mounted on
Sealing ring in connecting sewing carries out extruding sealing to sealing ring after fixing piece is fixed.
In an embodiment of the invention, the side of the cylindrical cavity be provided with respectively with install additional porous media
Space and the bellows cover the confining pressure injection hole that communicates of enclosure space of pressure loading sleeve；Confining pressure injection hole and porous media it
Between be provided with isolation silt filter.
In an embodiment of the invention, the excircle of the pit shaft is provided with the anti-of isolation porous media entrance
Sand net；Dispersing liquid permeation pathway is separately provided at the inner periphery of the cylindrical cavity and the excircle of the pit shaft
Haydite permeable formation.
In an embodiment of the invention, the parameter measurement system further includes that will be used for consolidating for fixation measuring component
Reservation, margining tablet and Anti-slip cover, the fixing seat sealing are fixed in the through-hole and are internally provided with central passage, the limit
Film-making be flexible or metal disk and be provided with it is multiple axially penetrate through jack, be horizontally arranged in fixing seat after multiple combinations
In heart channel, the Anti-slip cover is screwed in the external opening end of central passage by external screw thread, and front end holds out against the margining tablet；Institute
Bellows manograph, temperature sensor and electrode is stated to protrude into the cylindrical cavity after the jack on Anti-slip cover and margining tablet,
The Anti-slip cover and the fixing seat, which contact, is provided with sealing element on the excircle of one end, the other end, which is provided with, prevents signal cable
The anti-turn bolt of loosening, the anti-turn bolt are radially provided with through-hole, and corresponding limitation is provided on the Anti-slip cover
Hole, after anti-turn bolt goes to position, the through-hole that is screwed on anti-turn bolt by fixing bolt and limiting holes avoid anti-turn bolt
Rotation.
In an embodiment of the invention, the bellows manograph includes pressure-measuring pipe, covers drawing outside pressure-measuring pipe
Pressure pipe, positioned at impulse tube end and sealing accommodates the bellows separation sleeve of pressure-measuring pipe end, injects anti-icing fluid in Xiang Suoshu pressure guiding pipe
Injection device；The end outer surface of the pressure guiding pipe is provided with multiple tracks radial convex loop, and the bellows separation sleeve is open at one end
Flexible boot, the inner surface in open end is provided with concave ring corresponding with bulge loop, the bellows separation sleeve using concave ring with it is described
It links together after bulge loop engaging on pressure guiding pipe, in the internal guard space for forming receiving anti-icing fluid.
In an embodiment of the invention, the bellows manograph, temperature sensor and electrode are along the cylindrical cavity
Intracorporal Liquid Flow direction is sequentially distributed；In one through-hole install a bellows manograph, a temperature sensor or
Multiple bellows manographs, temperature sensor and electrode are installed simultaneously in one electrode or a measured hole.
In an embodiment of the invention, the radial simulation chamber is mounted on angular adjustment apparatus, the angle
Adjustment device includes the fixed column that horizontal symmetrical is fixed on on the outside of two opposite faces of the cylindrical cavity, wherein a fixed column
End be mounted in a support support on the ground by the bearing block with bearing, the bearing block and the support
For arc sliding contact；Another is connect by bearing with worm gear elevating mechanism, and worm gear elevating mechanism is real by control fixed column
Existing cylindrical cavity realizes the lifting rotated horizontally in vertical height.
The present invention can form hydration using the porous media of installation in the case where quantitatively injecting gas, liquid in proportion
Object, and then the synthesis process of hydrate can also be by water by the decomposition for the simulating hydrate that is depressured or heats up under simulated formation
It closes the layer of sand application after object decomposes and covers pressure centainly to simulate the layer of sand misalignment covered under press strip part after hydrate exploitation, reach and grind
Whether can lead to the purpose of caving in because layer of sand is migrated after studying carefully hydrate exploitation.
Detailed description of the invention
Fig. 1 is the radial simulation cavity configuration schematic diagram of one embodiment of the present invention；
Fig. 2 is the hollow simulation shaft structure schematic diagram of one embodiment of the present invention；
Fig. 3 is the measurement component scheme of installation of one embodiment of the present invention；
Fig. 4 is the bellows manograph structural schematic diagram of one embodiment of the present invention；
Fig. 5 is the angular adjustment apparatus mounting structure schematic diagram of one embodiment of the present invention.
Specific embodiment
In the following description, the analog form of each system and operating process all use existing method, each internal system
And each pipe is no longer all shown unless otherwise indicated by the piping connection with control valve one by one between cylindrical cavity
Road and control valve, and be only illustrated with the course of work or experimental procedure.
As shown in Figure 1, one embodiment of the present invention discloses a kind of geologic reservoir radial flow simulator, generally
Include: the radial simulation chamber 1 as simulation main body, simulates the hollow simulation wellbore hole 2 of practical recovery well, simulated formation covers the capsule of pressure
Formula covers pressure loading sleeve 7, carries out the parameter measurement system 3 of experimentation DATA REASONING, and divides experimentation and result
The data acquisition process unit of analysis.
Radial direction simulation chamber 1 includes the cylinder that both ends open is used to fill sea bottom hydrate reservoir shale flour sand porous media
Cavity 11 is bolted the upper cover plate 12 and lower cover plate 13 of closing cylindrical cavity both ends open respectively；Upper cover plate 12 is under
The bottom surface of cover board 13 can directly be contacted with the end face of cylindrical cavity 11, while setting is close for installing on mutual contact surface
The seal groove of seal；The circular extrusion platform 121 for being provided with protrusion on one side contacted in upper cover plate 12 with cylindrical cavity 11, squeeze station
121 diameter is greater than the internal diameter of cylindrical cavity 11 but is less than the outer diameter of cylindrical cavity 11, on the opposite end face of cylindrical cavity 11
Be provided with the step of indent, the diameter of squeeze station 121 and the internal diameter of step is identical and pluggable step in, on the contact surface of the two
It is provided with seal groove and sealing strip；It is provided on lower cover plate 13 and mutually passes to passing through for installation measurement component inside cylindrical cavity 11
Perforation 131, through hole 131 is distributed on the inner sidewall to the path between the center of circle of cylindrical cavity 11.The number of through hole 131
Amount and distribution mode as far as possible can be arranged more when not influencing 11 structure of cylindrical cavity, then according to different requirement of experiment corresponding
Through hole 131 in the corresponding measurement component of installation, the through hole 131 not used then can be with temporary enclosed.
The inside dimension that chamber 1 is radially simulated in present embodiment is 300 × 210mm of φ, capacity 15L, maximum working pressure
30MPa, design pressure 30MPa；It is whole to be process using 316 two-phase alloys stainless steel materials, material power with higher
Learn performance, while the corrosion resistance that material has had.
As shown in Fig. 2, the hollow simulation wellbore hole 2 includes the pit shaft 21 being inserted into cylindrical cavity 11 by through hole, and will insert
Pit shaft 21 after entering is limited in the spring capping 22 at upper cover plate；Be provided on the side wall that pit shaft 21 protrudes into cylindrical cavity 11 with
The through-hole that outside communicates, to facilitate the hydrate in porous media to enter inside pit shaft 21.The spring capping 22 is including one end
The open end other end is the tube body 221 of closed end, and tube body 221 stretches out cylindrical cavity 11 in pit shaft 21 for 222 sets using open end
Open end 222 is fixed on lower cover plate 13 by bolt behind one end, is provided in the closed end of tube body 221 for the stretching of pit shaft 21
Through-hole 223 is equipped with the spring 224 covered outside pit shaft in the inside of tube body 221, and by being threaded on 21 excircle of pit shaft
Regulating nut 225, regulating nut 225 turns position by opposite with closed end come the elastic force of adjustment spring 224.
The bellows cover pressure loading sleeve 7 and cover pressure for simulating the stratum being applied on porous media, including rubber closed at one end
Gum cover 71, and the pressing ring 72 and righting circle 73 of 71 sealing performance of rubber sleeve are improved, and the displacement sensor of measurement rubber sleeve displacement
74.Rubber sleeve 71 is squeezed present a theatrical performance as the last item on a programme 121 and cylindrical cavity by being arranged on the squeeze station 121 for being threaded onto upper cover plate 12 of circumference
Body 11 squeezes sealing and fixes, and an enclosure space, displacement sensor 74 are formed between the rubber sleeve 71 and upper cover plate 12 after fixing
The enclosure space is protruded into after upper cover plate 12.
The envelope for covering pressure loading sleeve 7 with the space and bellows for installing porous media additional respectively is provided in the side of cylindrical cavity 11
The confining pressure injection hole 14 that space communicates is closed, confining pressure injection hole 14 is for connecting pressure stabilizing feed flow air supply unit and others with suit
It sets, injection pressure in the enclosure space of pressure loading sleeve 7 is covered to bellows by pressure stabilizing feed flow air supply unit, to more in cylindrical cavity 11
Hole medium applies stratum and covers pressure, and breathing phenomenon can occur in pressure change for rubber sleeve 71, and the displacement sensor 74 after installation
It is contacted with rubber sleeve 71, therefore passes through the change in displacement of rubber sleeve 71, can measured and currently cover buckling.
For prevent porous media with the flowing of gas-liquid and enter pit shaft 21, it is settable at the excircle of pit shaft 21 will be porous
The filter 15 that dielectric distance is opened, filter 15 can be collectively constituted by metal mesh and strainer, and the mesh number of filter 15 itself is not
The channel of gas-liquid is influenced, but can prevent porous media from passing through.
As shown in figure 3, the parameter measurement system 3 includes being mounted in each through hole 131 to measure porous media in difference
The measurement component of data in simulated experiment, the specific component that measures may include the bellows manograph 306 for measuring pressure, measurement temperature
The temperature sensor 307 of degree and the electrode 305 of measurement resistance；Bellows manograph 306 therein can prevent from freezing under low temperature.Capsule
Formula manograph 306, temperature sensor 307 and electrode 305 can be combined with each other during installation, can be same in a through hole 131
When installation three or installation multiple one of them or a through holes 131 in one in three is only installed.Specific measurement
Component can also be not limited to above-mentioned three kinds, can be according to the corresponding measuring piece of specific experimental selection.All measurement components are all
It is connect with data acquisition process unit, to control experimentation and analysis experimental result at any time.
The data acquisition process unit includes the control system with data processing software, while controlling experimentation
Data acquisition, analysis and result output, control system, which can be PC machine, industrial personal computer etc. and have number, to be realized to different experimentations
According to the equipment of processing and analytic function comprising receive the data of the simultaneously data collecting card, operation data capture card of change data
The compositions such as acquisition software, the data processing system for controlling whole experiment process.Wherein, data collecting card is mainly used for acquiring bellows
The measuring signal of manograph, temperature sensor, electrode, and it is transferred to data acquisition software, input port is that 8 tunnels are differential；It is defeated
Entering type is mA, and 4~20mA of input range, sampling rate 15 times per second, resolution ratio is 16, bandwidth 15.75Hz, accuracy ±
0.02%.
Data acquisition software is the maincenter of whole system, guarantees the measuring accuracy of each system, and realizes each system
It is intelligent.The data of all acquisitions are recorded with database form, program according to the basic parameter of input and experiment acquisition content into
Row record, initial data are stored in Microsoft Excel, and user can recall data by Excel program and functional module
Processing, and can be according to requiring to automatically generate laboratory report.
It is fixed on cylindrical cavity in use, can first be about to upper cover plate, then the pit shaft on upper cover plate and each measurement group is installed
Part refills the porous media as sample, and bellows are covered after pressure loading sleeve is mounted on lower cover plate and are fixed again with cylindrical cavity,
The connecting pipeline of each experimental provision is finally installed.
By quantitatively injecting gas in proportion, liquid forms hydrate, and the synthesis process of hydrate under analog stratum is led to
The decomposition for crossing decompression or heating simulating hydrate, by applying centainly to the layer of sand after decomposition of hydrate, covering pressure covers press strip to simulate
Whether the layer of sand misalignment under part after hydrate exploitation can cause to collapse after reaching research hydrate exploitation because layer of sand is migrated
The purpose of square.The space of the spatial distribution in temperature field in lanthanum chloride hydrate and decomposable process, saturation field can additionally be studied
Distribution, the fltting speed in decomposition of hydrate forward position, the decomposition mechanism of hydrate etc.；By control change producing well bottom pressure,
The purpose of creation datas such as heat injection temperature, Optimal Development parameter.
In present embodiment, radial chamber 1, parameter measurement system 3 and the data acquisition process unit of simulating constitutes basic reality
Frame is tested, other each systems pass through corresponding pipeline simultaneously and are connected to radial simulation chamber 1, according to different requirement of experiment by people
Work or data acquisition process unit carry out the control of corresponding system, to realize different simulation processes, are simulating some specific mistake
Cheng Shi, other systems needed not participate in are isolated by corresponding control valve.
Together by each analog machine integration single at present, simulating chamber by basic equipment and radial direction can for present embodiment
The experimental situation on basis is provided for different simulated experiments, it is real simultaneously or separately can to realize and control different simulations with a set of equipment
It tests, facilitates the integration and comparison of data, while can guarantee the uniqueness of experiment condition, reduce experimental error.
Present embodiment can measure the permeability of different porous medias by changing the outfit different type deposit, pass through routine
Analysis method the various data in each simulation process are analyzed and are summarized, to obtain selection reservoir in different simulations realities
All data informations in testing provide believable foundation for practical exploitation.By accurately controlling the gas into radial simulation chamber 1
And liquid injection rate, while accurate measurement gas and amount of liquid that radially simulation chamber exports, it can calculate in porous media hole
Air water saturation degree.By in the generation situation and heat injection recovery process of different location hydrate in the radial simulation chamber 1 of monitoring
The decomposition situation of hydrate, can analyze the variation of temperature, pressure curve in porous media in experimentation, and according to gas phase with
The fine difference of temperature determines the generation and decomposition of hydrate in porous media, to show that natural gas is hydrated in different medium
The P-T of object is balanced and decomposition condition.
The resistivity value of different zones is detected by saturation degree electrical property measuring point using the electrode in parameter measuring apparatus 3,
The saturation distribution situation of different zones is calculated and detected according to the relation value between resistivity and saturation degree.Resistance is methane
Gas hydrate synthesis and good instruction parameter is decomposed, system resistance quickly increases when gas hydrate synthesis, electricity when decomposition of hydrate
Resistance strongly reduces.
In an embodiment of the invention, for convenience of sealing element is installed, installation measurement component is passed through on the upper cover plate
Three sections of diminishing step structures of internal diameter can be set into perforation, and the smallest one end of internal diameter is located at 101 side of cylindrical cavity,
The particular number of through hole 107 can be set 25~30.The interlude of through hole 107 is used to install and limit on upper cover plate 104
Sealing element processed, diameter minimal segment pass through for cable, and it is empty that such structure can provide corresponding installation using diameter largest segment
Between, seal section is formed using interlude, minimal segment can then reduce leakage.
In an embodiment of the invention, as shown in figure 3, pacifying in through hole 131 for convenience of fixation measuring component
Equipped with fixing seat 301, margining tablet 302 and Anti-slip cover 303, the through hole 131 on lower cover plate 13 are circular through-hole, fixing seat
301 are internally provided with central passage, and sealing is fixed in through hole 131, specific fixed form can be welding or spiral shell
Line twist-on.
Margining tablet 302 be flexible disk or metal gasket and be provided with it is multiple axially penetrate through jack, axially penetrate through jack use
In passing through the cable of each measurement component, it is horizontally arranged in central passage, margining tablet 302 can make according to the depth of bearing
With one or more, each margining tablet 302 can be overlapped mutually installation, form flexible fastening and sealing, while side to the cable passed through
Just the measurement position of the corresponding measurement component of adjustment.
Anti-slip cover 303 is equally the tubular-shaped structures that a centre has the through-hole passed through for cable, is twisted by external screw thread
On the internal screw thread at the external opening end of central passage, the front end of Anti-slip cover 303 can hold out against margining tablet 302 by the depth tightened
To prevent margining tablet 302 from moving axially.
Bellows manograph 306, temperature sensor 307 and measuring electrode 305 pass through on Anti-slip cover 303 and margining tablet 302
It is protruded into after through-hole in cylindrical cavity 11, for the pressure-resistant performance for improving junction, Anti-slip cover 303 and fixing seat 301 contact one end
Settable sealing element 308 on excircle；The anti-turn bolt 304 for preventing signal line from loosening is provided in the other end of Anti-slip cover,
The anti-turn bolt 304 is radially provided with through-hole, and corresponding limiting holes are provided on Anti-slip cover 303, when anti-turn bolt 304
After going to position, through-hole and limiting holes can be screwed by fixing bolt to avoid anti-turn bolt 303 from rotating relative to Anti-slip cover.
As shown in figure 4, the bellows manograph 306 in present embodiment includes pressure-measuring pipe 3061, cover outside pressure-measuring pipe 3061
The pressure guiding pipe 3062 in portion, positioned at 3062 end of pressure guiding pipe and sealing accommodates the bellows separation sleeve 3063 of 3061 end of pressure-measuring pipe, to
The injection device of injection anti-icing fluid in pressure guiding pipe 3062；The pressure of received insert division porous media is transferred to by pressure-measuring pipe 3061
External pressure sensor, pressure sensor pass through the digital display secondary instrument provided for oneself and are directly shown or be transferred at data collection
It manages at unit 10.For pressure guiding pipe 3062 for protecting pressure-measuring pipe 3061, internal anti-icing fluid can prevent pressure-measuring pipe 3061 by porous Jie
Sharp freezing at matter.Bellows separation sleeve 3063 can form the compression cavity for being full of anti-icing fluid in the end of pressure-measuring pipe 3061
3064, with the pressure of accurate transfer receiving to pressure-measuring pipe 3061.
The end outer surface of pressure guiding pipe 3062 is provided with multiple tracks radial convex loop 3065, bellows separation sleeve 3063 is opened for one end
The flexible boot of mouth, the inner surface in open end are provided with concave ring 3066 corresponding with bulge loop 3065, and bellows separation sleeve 3063 utilizes
It is fastened togather after concave ring 3066 and 3065 inserting of bulge loop on pressure guiding pipe 3062, can be formed in inside while preventing from falling off
Accommodate the compression cavity 3064 of anti-icing fluid.
Gas hydrates have high resistivity (about 50 times or more of water resistance rate), and the resistivity on stratum is about
0~15000 Ω .m.In the present system, the resistivity measurement range of electrode 305 is 0~15000 Ω .m, precision 1%.For more
The distribution of accurate measurement hydrate, electrode 305 are such as arranged in the way of 13 × 3 by the way of evenly dispersed arrangement.
Above structure can reduce the quantity of arrangement through hole 131 while enhance bonding strength, reduce leakage point；Using more
The structure of layer combined type margining tablet 302 can be when receiving pressure be bigger, and margining tablet 302 is bonded more abundant with temperature point, it is ensured that
The reliability of measuring point sealing.
As shown in figure 5, in an embodiment of the invention, to carry out simulated experiment, Ke Yian under different angle
The angular adjustment apparatus 16 that can arbitrarily adjust radial simulation chamber placement angle is filled, which includes level
The fixed column 161 being symmetrically fixed on on the outside of 11 two opposite faces of cylindrical cavity, wherein the end of a fixed column 161 passes through band
There is the bearing block 162 of bearing to be mounted in the support 163 of a support on the ground, bearing block 162 and support 163 are sliding for arc
Dynamic contact；Another fixed column 161 is connect by bearing with worm gear elevating mechanism 164, and worm gear elevating mechanism 164 is solid by control
Fixed column 161 realizes that cylindrical cavity 11 rotates horizontally and the lifting in vertical height.
In the present solution, worm gear elevating mechanism 164 use existing Worm gear feed screw elevator, generally comprise worm reduction gear and
Elevating screw drives worm gear to realize and slows down, worm gear center is internal thread structure, is equivalent to by worm-drive using worm screw
The nut and elevating screw of elevating screw match, lifting speed be equal to worm screw input speed divided by worm and gear reduction ratio,
Then multiplied by the screw pitch of screw rod.It has high-precision elevating function, while not influencing the radial radial rotary for simulating chamber again；Make
Used time, radial chamber 1 of simulating is using 164 one end of worm gear elevating mechanism as drive end, and the other end is using arc sliding as passive
End, any inclination angle can be gone to around axis, is then locked again.It can be also tilted a certain angle simultaneously by worm gear elevating mechanism 164, so that
Radial simulation 1 analog of chamber from vertically to horizontal various situations, and can anticline certain angle, greatly expand research range.
In addition, geologic reservoir radial flow simulator of the invention is additionally provided with electricity consumption ground protection in terms of electricity consumption, break
Electric protection circuit, overtemperature prote, overpressure protection and electronic security circuit protection.
Wherein electricity consumption ground protection and power-off protecting circuit can avoid injury of the incoming call to equipment and human body after having a power failure suddenly,
Every power-off must restart general supply, and instrument can be just powered on, it is ensured that personal safety.
Overtemperature prote has carried out split-phase processing to some high-power instruments of heating, reaches in a basic balance, holding circuit system
System is stablized, with prevent in circuit a certain phase power it is excessive cause it is uneven between phase and phase.The PID control system designed by system
System can then be alarmed when real time temperature is more than the measuring temperature upper limit or lower limit, be mentioned to offline in thermostatic control system set temperature
Wake up operator note that and when system temperature beyond setting spend when, system can be automatically stopped current operation immediately, be then powered off add
Thermoelectric generator is simultaneously alarmed.
Overpressure protection processing mode includes the high pressure material that selection meets national " GB/T 1220-2007 stainless steel bar " standard
Material makes each device；And press member be designed in strict accordance with national " GB150.1~150.4-2011 pressure vessel " standard,
Processing and inspection.Pressure test includes hydraulic test and gas pressure test, the design pressure that hydraulic test pressure is 1.25 times, air pressure
The design pressure that test pressure is 1.15 times；Container and key pressure point are provided with the inlet pressure sensor of corresponding range, real
When monitor each pressure-measuring-point.It can be needed to set maximum pressure value according to test, when pressure-measuring-point is close to full scale or instrument pole
When limiting index, dynamical element stops working, software interface prompt and audible alarm.Safety valve is housed at the pump of each system, works as pressure
Power overstep the extreme limit pressure when releasing pressure automatically.Safety valve is opened after pressure reaches specified value, and is sounded an alarm.
Electronic security circuit protection using electro connecting pressure gauge carry out overpressure protection, electro connecting pressure gauge by measuring system,
Instruction system, magnetic help electric contact set, shell, the adjustment composition such as device and terminal box (connector assembly).General electro connecting pressure gauge
It is the positive/negative pressure for measuring the gas for not playing corrosiveness to copper and copper alloy, liquid medium, stainless steel electric contact pressure
Table does not play the gas of corrosiveness, the positive/negative pressure of liquid medium and the hair when pressure reaches predetermined value to stainless steel for measuring
Signal out connects control circuit, achievees the purpose that the alarm of automatic control.Electro connecting pressure gauge is based on the spring in measuring system
Pipe forces the end of bourdon tube to generate corresponding flexible deformation one and is displaced, pass through by pull rod under the pressure effect of measured medium
The transmission of gear drive simultaneously gives amplification, is indicated on scale by the instruction (together with contact) on fixed gear by by measured value
Out.At the same time, when its instantaneous of (dynamic circuit breaker or dynamic circuit connector) that be in contact with the contact (upper limit or lower limit) on setting pointer, cause
Circuit in control system is turned off or connects, to achieve the purpose that automatically control and transmit alarm.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (8)
1. a kind of geologic reservoir radial flow simulator characterized by comprising
Radial simulation chamber, is used to fill the cylindrical cavity of sea bottom hydrate reservoir shale flour sand porous media including both ends open,
Be bolted respectively closing cylindrical cavity both ends open upper cover plate and lower cover plate, lower cover plate contacted with cylindrical cavity one
Face is provided with protrusion and squeeze station identical with cylindrical cavity internal diameter, the center point of upper cover plate are provided with through hole；
Hollow simulation wellbore hole is inserted into the intracorporal pit shaft of cylindrical cavity for simulating recovery well, including by the through hole, by pit shaft
The spring capping being limited at upper cover plate；The pit shaft protrude into be provided on the intracorporal side wall of cylindrical cavity communicated with outside it is logical
Hole, the spring capping include that one end is the tube body that the open end other end is closed end, and tube body is stretched using opening end cap in pit shaft
Open end is fixed on upper cover plate by bolt behind one end of cylindrical cavity out, is provided in the closed end of tube body and is stretched out for pit shaft
Through-hole, the spring covered outside pit shaft, and the regulating nut by being threaded on pit shaft are installed in the inside of tube body, adjust
Nut is using the relative position with closed end come the elastic force of adjustment spring；
Bellows cover pressure loading sleeve, cover pressure for simulating the stratum being applied on porous media, including rubber sleeve closed at one end, mention
The pressing ring and righting circle of high rubber sleeve sealing performance, and the displacement sensor of measurement rubber sleeve displacement；Rubber sleeve is twisted by screw thread
On the squeeze station of lower cover plate, an enclosure space is formed between lower cover plate, displacement sensor protrudes into this after passing through lower cover plate
Enclosure space；
Parameter measurement system, for measuring porous media data in different simulated experiments, the bellows including measuring pressure survey pressure
Device, the temperature sensor for measuring temperature and the electrode for measuring resistance, are provided with multiple through-holes on lower cover plate, and bellows survey pressure
Device, the temperature sensor, motor are mounted in a through-hole simultaneously or disperse to be mounted in different through-holes；
Data acquisition process unit, the control system including having data processing software, to not while controlling experimentation
Same experimentation realizes data acquisition, analysis and result output.
2. geologic reservoir radial flow simulator according to claim 1, which is characterized in that
The fixing piece for sealing connecting sewing between the pit shaft and the upper cover plate is also equipped with inside the spring capping, it is fixed
Part includes covering using the pressing sleeve that bolt is fixed, and the sealing ring being mounted in connecting sewing outside the pit shaft, after fixing piece is fixed
Extruding sealing is carried out to sealing ring.
3. geologic reservoir radial flow simulator according to claim 1, which is characterized in that
It is provided in the side of the cylindrical cavity and covers pressure loading sleeve with the space and the bellows for installing porous media additional respectively
The confining pressure injection hole that enclosure space communicates；The filter that silt is isolated is provided between confining pressure injection hole and porous media.
4. geologic reservoir radial flow simulator according to claim 1, which is characterized in that
The excircle of the pit shaft is provided with the sand control screens that isolation porous media enters；The cylindrical cavity inner periphery and
The haydite permeable formation of dispersing liquid permeation pathway is separately provided at the excircle of the pit shaft.
5. geologic reservoir radial flow simulator according to claim 1, which is characterized in that
The parameter measurement system further includes the fixing seat that will be used for fixation measuring component, margining tablet and Anti-slip cover, the fixation
Seat sealing is fixed in the through-hole and is internally provided with central passage, and the margining tablet is flexible or metal disk and is provided with
It is multiple to axially penetrate through jack, it is horizontally arranged in the central passage of fixing seat after multiple combinations, the Anti-slip cover passes through outer spiral shell
Line is screwed in the external opening end of central passage, and front end holds out against the margining tablet；The bellows manograph, temperature sensor and electricity
Pole is protruded into the cylindrical cavity after passing through the jack on Anti-slip cover and margining tablet, and the Anti-slip cover contacts one with the fixing seat
Sealing element is provided on the excircle at end, the other end is provided with the anti-turn bolt for preventing signal cable from loosening, the anti-turn bolt
Be radially provided with through-hole, corresponding limiting holes are provided on the Anti-slip cover, after anti-turn bolt goes to position, by solid
Through-hole and the limiting holes that bolt is screwed on anti-turn bolt are determined to avoid anti-turn bolt from rotating.
6. geologic reservoir radial flow simulator according to claim 5, which is characterized in that
The bellows manograph includes pressure-measuring pipe, covers the pressure guiding pipe outside pressure-measuring pipe, is located at impulse tube end and sealing accommodates
The bellows separation sleeve of pressure-measuring pipe end, the injection device of the interior injection anti-icing fluid of Xiang Suoshu pressure guiding pipe；Outside the end of the pressure guiding pipe
Surface is provided with multiple tracks radial convex loop, and the bellows separation sleeve is flexible boot open at one end, and the inner surface in open end is arranged
One is connected to after having concave ring corresponding with bulge loop, the bellows separation sleeve to engage using concave ring with the bulge loop on the pressure guiding pipe
It rises, in the internal guard space for forming receiving anti-icing fluid.
7. geologic reservoir radial flow simulator according to claim 6, which is characterized in that
The bellows manograph, temperature sensor and electrode are sequentially distributed along the intracorporal Liquid Flow direction of the cylindrical cavity；One
Pacify simultaneously in one bellows manograph of installation, a temperature sensor or an electrode or a measured hole in a through-hole
Fill multiple bellows manographs, temperature sensor and electrode.
8. geologic reservoir radial flow simulator according to claim 1, which is characterized in that
The radial simulation chamber is mounted on angular adjustment apparatus, and the angular adjustment apparatus includes described in horizontal symmetrical is fixed on
Fixed column on the outside of two opposite faces of cylindrical cavity, wherein the end of a fixed column is installed by the bearing block with bearing
In the support of a support on the ground, the bearing block is contacted with the support for arc sliding；Another passes through bearing
It is connect with worm gear elevating mechanism, worm gear elevating mechanism realizes horizontal rotation and vertical height by control fixed column realization cylindrical cavity
Lifting on degree.
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| CN110361158B (en) * | 2019-06-27 | 2020-06-16 | 青岛海洋地质研究所 | Simulation method and device for stripping and migration of cement reservoir sand in depressurization process |
| CN111812152A (en) * | 2020-08-11 | 2020-10-23 | 中国科学院西北生态环境资源研究院 | Hydrate occurrence medium disturbance device |
| CN113848165A (en) * | 2021-09-28 | 2021-12-28 | 天津大学 | Simulation system and method for coupling effect of seepage field and temperature field |
| CN114884041B (en) * | 2022-04-07 | 2024-06-21 | 西北核技术研究所 | Bipolar pneumatic high-voltage high-power isolation and discharge protection device |
| CN114618379A (en) * | 2022-04-12 | 2022-06-14 | 中国海洋石油集团有限公司 | Experimental model for simulating hydrate accumulation and exploitation and experimental method thereof |
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| CN101709639B (en) * | 2009-11-20 | 2013-08-21 | 中国石油大学(华东) | Mineshaft multiphase flow device for simulating deep-water oil and gas production |
| CN103206210B (en) * | 2013-04-15 | 2015-04-15 | 中国石油大学(华东) | Experimental apparatus for exploiting natural gas hydrate reservoir by means of thermal fluid fracturing |
| CN103257079A (en) * | 2013-04-28 | 2013-08-21 | 中国科学院广州能源研究所 | Three-dimensional simulating device of natural gas hydrate mining stratum stability |
| CN104500031B (en) * | 2014-11-20 | 2017-03-29 | 中国科学院广州能源研究所 | Natural gas hydrate stratum drilling simulation device |
| CN106053245A (en) * | 2016-07-14 | 2016-10-26 | 中国科学院广州能源研究所 | Shearing device for mechanical tests of hydrate-containing sediments |
| CN107045054B (en) * | 2016-12-20 | 2019-07-12 | 中国科学院广州能源研究所 | The experimental provision and method of the relationship of husky behavior and the deformation of porous media radial direction are produced in a kind of researching natural gas hydrate recovery process |
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