CN113533677B - One-dimensional test device for testing physical properties of hydrate - Google Patents
One-dimensional test device for testing physical properties of hydrate Download PDFInfo
- Publication number
- CN113533677B CN113533677B CN202110880537.1A CN202110880537A CN113533677B CN 113533677 B CN113533677 B CN 113533677B CN 202110880537 A CN202110880537 A CN 202110880537A CN 113533677 B CN113533677 B CN 113533677B
- Authority
- CN
- China
- Prior art keywords
- module
- wall
- cap
- pressing
- sand
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 28
- 230000000704 physical effect Effects 0.000 title claims abstract description 14
- 239000004576 sand Substances 0.000 claims abstract description 39
- 239000000463 material Substances 0.000 claims abstract description 38
- 229920006395 saturated elastomer Polymers 0.000 claims abstract description 30
- 230000000007 visual effect Effects 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 238000003825 pressing Methods 0.000 claims description 95
- 238000007789 sealing Methods 0.000 claims description 30
- 239000005357 flat glass Substances 0.000 claims description 21
- 239000011521 glass Substances 0.000 claims description 17
- 238000004519 manufacturing process Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 23
- 238000000034 method Methods 0.000 description 21
- 230000008569 process Effects 0.000 description 20
- 239000007789 gas Substances 0.000 description 12
- 230000009471 action Effects 0.000 description 9
- 239000003345 natural gas Substances 0.000 description 9
- 238000012856 packing Methods 0.000 description 8
- 238000000354 decomposition reaction Methods 0.000 description 7
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 5
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 101000793686 Homo sapiens Azurocidin Proteins 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 208000010392 Bone Fractures Diseases 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 206010017076 Fracture Diseases 0.000 description 1
- -1 Natural gas hydrates Chemical class 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
Images
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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a one-dimensional test device for testing physical properties of hydrate, which comprises a low-temperature incubator and a body arranged in the low-temperature incubator, wherein the body comprises: the device comprises an axial loading module, a sample generating module, a simulated exploitation depressurization module, a sand-discharging visual module and a base; the sample generation module is internally provided with a water-saturated framework material, and a plurality of sensor interfaces are arranged on the sample generation module; the axial loading module is used for applying axial pressure to the water-saturated framework material; the water saturated framework material can be discharged from the simulated exploitation depressurization module; the sand-out visual module is used for observing the outflow quantity of the water-saturated framework material; the axial loading module and the simulated exploitation depressurization module are respectively arranged at two ends of the sample generation module; the axial loading module, the sample generating module and the simulated exploitation depressurization module are arranged in the sand-discharging visual module, and the axes of the axial loading module, the sample generating module, the simulated exploitation depressurization module and the sand-discharging visual module are positioned on the same straight line; the visual module of play sand sets up the top surface at the base.
Description
Technical Field
The invention relates to the technical field of research on physical properties of natural gas hydrate, in particular to a one-dimensional test device for testing physical properties of the hydrate.
Background
The natural gas hydrate is an ice-like cage-shaped crystalline compound formed by natural gas and water under low-temperature and high-pressure conditions, is widely distributed in deep water strata such as high-latitude polar frozen earth strata, ocean lakes and the like, has the characteristics of large reserve, high energy density and the like, and is considered as a potential energy source. The energy density of methane (the volume of methane per unit rock volume under standard conditions) is 10 times that of coal and black shale, and 2.5 times that of natural gas.
Natural gas hydrates are widely distributed in nature in the deep water environment of continents, islands, rising areas of active and passive continents edges, polar continents frames, and oceans and some inland lakes. The formation conditions of natural gas hydrate: low temperature, typically below 10 ℃; high pressure, typically above 10MPa; a sufficient source of natural gas (hydrocarbons, primarily methane); advantageous hydrate formation spaces.
The hydrate reservoir rock skeleton belongs to unconsolidated, weakly consolidated or fracture development stratum generally, the cement strength, the porosity, the effective stress and the permeability coefficient of the stratum are changed due to the exploitation of the hydrate, meanwhile, due to the fact that the hydrate is distributed in the submarine stratum in a layered mode, the permeability difference exists between a hydrate layer and a cover layer in the exploitation process, the original seepage balance is changed due to the decomposition of the hydrate, the phenomenon of water and sand discharge between layers is easy to occur, well collapse is caused due to the fact that stability of a well wall is poor, and effective exploitation and utilization of hydrate resources are seriously affected. Thus, formation sand production and sand control are one of the key problems faced in the hydrate decomposition process.
The hydrate in the south China sea area is filled in the pores of the muddy sediment in a dispersing mode or a weak cementing mode, and the serious sand production problem can be faced in the hydrate decomposition process, so that the exploitation well is blocked, the exploitation efficiency of the deep sea natural gas hydrate is seriously restricted, the exploitation cost is increased, and the commercialization process is influenced. How to solve the problems of well sand production and treatment thereof in the process of hydrate exploitation, the special conditions of occurrence of deep sea natural gas hydrate are required to be fully considered, the sand production mechanism in the process of hydrate reservoir exploitation is revealed, the deep layer reason influencing the sand production of the hydrate stratum is analyzed, the revelation of the conventional oil-gas well sand production prediction technology and sand prevention technology to the hydrate well treatment at present is discussed, and references are provided for subsequent research and engineering application. The problems of sand production and sand prevention in the hydrate exploitation process are studied, and the method has practical significance for economic and efficient development of deep sea hydrate resources in China.
Disclosure of Invention
The invention aims to provide a one-dimensional test device for testing physical properties of a hydrate, which aims to solve the problems in the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a one-dimensional test device for testing physical properties of hydrate, which comprises a low-temperature incubator and a body arranged in the low-temperature incubator, wherein the body comprises: the device comprises a sample body, a sand-discharging visual module and a base;
the sample body comprises an axial loading module, a sample generating module and a simulated exploitation depressurization module;
the sample generation module is internally provided with a water-saturated framework material, and the sample generation module is provided with a plurality of sensor interfaces; the axial loading module is used for applying axial pressure to the water-saturated framework material; the water saturated framework material can be discharged from the simulated production depressurization module; the sand-out visual module is used for observing the outflow quantity of the water-saturated framework material; the axial loading module and the simulated exploitation depressurization module are respectively arranged at two ends of the sample generation module; the axial loading module, the sample generating module and the simulated exploitation depressurization module are arranged in the sand-discharging visual module, and the axial loading module, the sample generating module, the simulated exploitation depressurization module and the sand-discharging visual module are positioned on the same straight line; the sand-discharging visual module is arranged on the top surface of the base.
Preferably, the sample generation module comprises a cylinder and a press cap;
the pressure cap is detachably connected with the outer wall of one end of the cylinder body, the pressure cap is connected with the simulated exploitation depressurization module, and the other end of the cylinder body is connected with the axial loading module; the sensor interfaces are arranged on the outer wall of the cylinder body at equal intervals.
Preferably, the axial loading module comprises an axial pressing piston, an axial pressing cap, a pressing head, an axial pressing cylinder, a sealing sleeve and a sand baffle;
the inner wall of one end of the shaft pressing cylinder is detachably connected with the outer wall of the other end of the cylinder, the other end of the shaft pressing cylinder is detachably connected with the shaft pressing cap, the pressing head is arranged in the shaft pressing cylinder, the outer wall of the sealing sleeve is respectively abutted to the inner wall of the cylinder and the inner wall of the shaft pressing cylinder, one end of the pressing head is positioned in the cylinder and is abutted to the inner wall of the cylinder, the other end of the pressing head is provided with a plug hole, one end of the shaft pressing piston penetrates through the end face of the shaft pressing cap and is abutted to the inner wall of the plug hole, the sealing sleeve is sleeved on the outer wall of the pressing head, and the shaft pressing piston and the pressing head are provided with a first communicated through hole; the sand baffle is fixedly connected with the side face of the pressure head.
Preferably, a first O-shaped ring is arranged between the shaft pressing piston and the shaft pressing cap, a second O-shaped ring is arranged between the shaft pressing piston and the inner wall of the shaft pressing cylinder, a third O-shaped ring is arranged between the shaft pressing cap and the shaft pressing cylinder, a fourth O-shaped ring is arranged between the pressure head and the sealing sleeve, a fifth O-shaped ring is arranged between the sealing sleeve and the inner wall of the shaft pressing cylinder, and a sixth O-shaped ring is arranged between the sealing sleeve and the inner wall of the cylinder;
preferably, the simulated mining depressurization module comprises a plug, an adjusting piece and a reducing press cap;
one end of the plug is arranged in the cylinder body, a hole elastic retainer ring is arranged between the plug and the inner wall of the cylinder body, the other end of the plug penetrates through the pressing cap and is sleeved with the reducing pressing cap, the adjusting piece is arranged between the reducing pressing cap and the plug, second through holes which are mutually communicated are formed in the plug, the adjusting piece and the reducing pressing cap, a seventh O-shaped ring is arranged between the plug and the reducing pressing cap, and a shaft elastic retainer ring is sleeved on the outer wall of the end face of the plug, which is close to the pressing cap.
Preferably, the sand-out visual module comprises a window press cap, an annular gasket, a sealing gasket, window glass, a main body, an eighth O-shaped ring, a ninth O-shaped ring and a joint;
the main part sets up to tubular structure, the bottom outer wall of main part with base top surface rigid coupling, the window press the cap be provided with two, and respectively with the connection can be dismantled to the both ends inner wall of main part, annular joint groove has been seted up respectively to main part inner wall both ends, annular joint groove inner wall rigid coupling has annular packing ring, window glass sets up to cylindrical structure, window glass's global with annular packing ring inner wall butt, eighth O type circle sets up window glass with between the annular packing ring, annular packing ring with window glass one side butt, sealing gasket sets up window glass opposite side with window press between the cap, the joint is provided with two, and relate to main part axis symmetry sets up on the main part perisporium, the joint is tubular structure, the joint intercommunication the main part inner chamber, two the joint respectively with axial loading module with the analog decompression module is connected, ninth O type circle sets up connect with between the main part inner wall.
Preferably, the two connectors are respectively in close contact with the axial compression piston and the reducing compression cap.
Preferably, the connector connected with the reducing pressure cap is communicated with a gauge, and the connector connected with the shaft pressure piston is connected with a pressurizing system.
Preferably, the low-temperature incubator is externally connected with a water supply system, an air supply system and a data acquisition system.
Preferably, the sensor interface is respectively connected with a temperature sensor, a pressure sensor and a resistance heater in an inserted mode.
The invention discloses the following technical effects: the set sample generation module can be used for storing and compacting the water-saturated framework materials, so that the materials are more close to the state in actual exploitation, the set axial loading module can apply set axial pressure to the water-containing compound sample generated after the low-temperature incubator applies moisture and natural gas, and the water-saturated framework materials are promoted to flow out of the set simulated exploitation depressurization module under the action of the axial pressure and the wrapping action of the gas and the water in the hydrate decomposition process, and then are observed and measured through the sand-yielding visual module. The invention can simulate the sand discharge process of the reservoir in the process of decomposing the hydrate under the action of axial pressure and the sand discharge process of the reservoir in the process of decomposing the hydrate under the action of different screen apertures, and can effectively reveal the sand discharge mechanism of the hydrate reservoir. The invention has the advantages of simple structure, convenient disassembly, low cost and visual sand discharge process, and has wide popularization and application values in the technical field.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a sample body according to the present invention;
FIG. 2 is a partial enlarged view of A1;
FIG. 3 is a front view of the sand out vision module of the present invention;
FIG. 4 is a left side view of the sand out vision module of the present invention;
FIG. 5 is a top view of the sand out vision module of the present invention;
FIG. 6 is a schematic diagram of an embodiment of the present invention;
1, a base; 2. a water saturated framework material; 3. a sensor interface; 4. a cylinder; 5. pressing the cap; 6. an axial compression piston; 7. pressing the cap by the shaft; 8. a pressure head; 9. a shaft pressing cylinder; 10. sealing sleeve; 11. a sand baffle; 12. a first through hole; 13. a first O-ring; 14. a second O-ring; 15. a third O-ring; 16. a fourth O-ring; 17. a fifth O-ring; 18. a sixth O-ring; 19. a plug; 20. a regulating piece; 21. reducing press cap; 22. circlips for holes; 23. a second through hole; 24. a seventh O-ring; 25. circlips for shafts; 26. pressing the cap of the window; 27. an annular gasket; 28. an annular gasket; 29. a sealing gasket; 30. a window glass; 31. a main body; 32. an eighth O-ring; 33. a ninth O-ring; 34. a joint; 35. a glass cylinder; 36. a left end cover; 37. a right end cover; 38. a locking lever.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
The invention provides a one-dimensional test device for testing physical properties of hydrate, which comprises a low-temperature incubator and a body arranged in the low-temperature incubator, wherein the body comprises: the device comprises a sample body, a sand-out visual module and a base 1;
the sample body comprises an axial loading module, a sample generating module and a simulated exploitation depressurization module;
the sample generation module is internally provided with a water-saturated framework material 2, and a plurality of sensor interfaces 3 are arranged on the sample generation module; the axial loading module is used for applying axial pressure to the water-saturated framework material 2; the water saturated framework material 2 can be discharged from the simulated exploitation depressurization module; the sand-out visual module is used for observing the outflow quantity of the water-saturated framework material 2; the axial loading module and the simulated exploitation depressurization module are respectively arranged at two ends of the sample generation module; the axial loading module, the sample generating module and the simulated exploitation depressurization module are arranged in the sand-discharging visual module, and the axes of the axial loading module, the sample generating module, the simulated exploitation depressurization module and the sand-discharging visual module are positioned on the same straight line; the sand-out visual module is arranged on the top surface of the base 1.
The water saturated skeleton material refers to loose particles of fine sand, kaolin and the like which are fully saturated with distilled water.
The set sample generation module can be used for storing and compacting the water-saturated framework material 2, so that the material is more similar to the state in actual exploitation, the set axial loading module can apply set axial pressure to a hydrate sample generated after the low-temperature incubator applies moisture and natural gas, and the water-saturated framework material is promoted to flow out of the set simulated exploitation depressurization module under the action of the axial pressure and the wrapping action of the gas and the water in the hydrate decomposition process, and then is observed and measured by the sand-yielding visual module. The invention can simulate the sand discharge process of the reservoir in the process of decomposing the hydrate under the action of axial pressure and the sand discharge process of the reservoir in the process of decomposing the hydrate under the action of different screen apertures, and can effectively reveal the sand discharge mechanism of the hydrate reservoir.
The maximum bearing pressure is 25MPa, and the applicable temperature is 15 ℃ below zero to 200 ℃.
In a further optimized scheme, the sample generating module comprises a cylinder 4 and a press cap 5;
the pressure cap 5 is detachably connected with the outer wall of one end of the cylinder body 4, the pressure cap 5 is connected with the simulated exploitation depressurization module, and the other end of the cylinder body 4 is connected with the axial loading module;
the preferable inner diameter of the cylinder 4 is 100mm, and the length is 500mm;
the cylinder 4 is used for storing water saturated framework materials, and the press cap 5 can be used for connecting a simulated exploitation depressurization module.
The axial loading module comprises an axial pressing piston 6, an axial pressing cap 7, a pressing head 8, an axial pressing cylinder 9, a sealing sleeve 10 and a sand baffle 11;
one end inner wall of the shaft pressing cylinder 9 is detachably connected with the other end outer wall of the cylinder body 4, the other end of the shaft pressing cylinder 9 is detachably connected with the shaft pressing cap 7, the pressing head 8 is arranged in the shaft pressing cylinder 9, the outer wall of the sealing sleeve 10 is respectively abutted with the inner wall of the cylinder body 4 and the inner wall of the shaft pressing cylinder 9, one end of the pressing head 8 is positioned in the cylinder body 4 and is abutted with the inner wall of the cylinder body 4, the other end of the pressing head 8 is provided with a plug hole, one end of the shaft pressing piston 6 penetrates through the end face of the shaft pressing cap 7 and is abutted with the inner wall of the plug hole, the sealing sleeve 10 is sleeved on the outer wall of the pressing head 8, and the shaft pressing piston 6 and the pressing head 8 are provided with a first communicated through hole 12; the sand baffle 11 is fixedly connected with the side surface of the pressure head 8.
The axial loading module can apply 40MPa of axial pressure at maximum.
The sand baffle 11 that sets up can prevent that water saturation framework material 2 from revealing from axial loading module side, and seal cover 10's setting can prevent that water saturation framework material 2 from revealing when guaranteeing that pressure head 8 applys axial pressure to water saturation framework material 2.
The sand guard 11 is made of a material with high density of fine pores.
In a further optimization scheme, a first O-shaped ring 13 is arranged between the shaft pressing piston 6 and the shaft pressing cap 7, a second O-shaped ring 14 is arranged between the shaft pressing piston 6 and the inner wall of the shaft pressing cylinder 9, a third O-shaped ring 15 is arranged between the shaft pressing cap 7 and the shaft pressing cylinder 9, a fourth O-shaped ring 16 is arranged between the pressure head 8 and the sealing sleeve 10, a fifth O-shaped ring 17 is arranged between the sealing sleeve 10 and the inner wall of the shaft pressing cylinder 9, and a sixth O-shaped ring 18 is arranged between the sealing sleeve 10 and the inner wall of the cylinder 4;
the O-shaped ring is made of acid gas corrosion resistant materials such as fluorine rubber materials.
The O-shaped ring can achieve the effect of auxiliary sealing, and the sealing performance is improved.
Further optimizing scheme, the simulated exploitation depressurization module comprises a plug 19, an adjusting piece 20 and a reducing press cap 21;
one end of a plug 19 is arranged in the cylinder body 4, a hole elastic retainer ring 22 is arranged between the plug 19 and the inner wall of the cylinder body 4, the other end of the plug 19 penetrates through the pressing cap 5 and is sleeved with a reducing pressing cap 21, an adjusting piece 20 is arranged between the reducing pressing cap 21 and the plug 19, the adjusting piece 20 and the reducing pressing cap 21 are all provided with mutually communicated second through holes 23, a seventh O-shaped ring 24 is arranged between the plug 19 and the reducing pressing cap 21, and an outer wall of the plug 19, which is close to the end face of the pressing cap 5, is sleeved with a shaft elastic retainer ring 25.
The simulated exploitation depressurization module can replace the reducing pressure cap according to simulated different sand outlet hole sizes, control the sand outlet amount and improve the measurement accuracy of the device.
Further optimizing scheme, the sand-out visual module comprises a window press cap 26, an annular gasket 27, an annular gasket 28, a sealing gasket 29, window glass 30, a main body 31, an eighth O-shaped ring 32, a ninth O-shaped ring 33 and a joint 34;
the main part 31 sets up to tubular structure, the bottom outer wall and the top surface rigid coupling of base 1 of main part 31, the window press cap 26 is provided with two, and can dismantle with the both ends inner wall of main part 31 respectively and be connected, annular joint groove has been seted up respectively to main part 31 inner wall both ends, annular joint groove inner wall rigid coupling has annular packing ring 27, window glass 30 sets up to the cylinder structure, the global and annular packing ring 27 inner wall butt of window glass 30, eighth O type circle 32 sets up between window glass 30 and annular packing ring 27, annular packing ring 28 and window glass 30 one side butt, sealing washer 29 sets up between window glass 30 opposite side and window press cap 26, joint 34 is provided with two, and set up on main part 31 perisporium about main part 31 axis symmetry, joint 34 is tubular structure, joint 34 intercommunication main part 31 inner chamber, both joints are connected with axial loading module and simulation exploitation depressurization module respectively, ninth O type circle 33 sets up between joint 34 and main part 31 inner wall.
When the observation measurement is carried out, the sand production process and the sand production mechanism in the hydrate exploitation process can be observed through the window glass 30 from the window press caps 26 arranged on two sides, and the corresponding theoretical support can be provided for the deep sea hydrate exploitation sand production control by combining the measured data.
Further optimized, the two joints 34 are respectively closely connected with the axial compression piston 6 and the reducing compression cap 21.
In a further optimized scheme, a joint 34 connected with the reducing pressure cap 21 is communicated with a gauge, and a joint 34 connected with the shaft pressure piston 6 is connected with a pressurizing system.
The provided meter can measure and record relevant data such as sand discharge speed, sand discharge quality and the like, and more accurate measurement data is obtained. The meter provided is provided in the present invention as a flow meter.
Further optimizing scheme, the low-temperature constant-temperature box is externally connected with a water supply system, an air supply system and a data acquisition system;
the water supply system, the air supply system and the data acquisition system are all of the prior art, the water supply system is used for providing moisture for the low-temperature incubator, the air supply system is used for extracting gas and providing natural gas for the low-temperature incubator, and the data acquisition system is used for controlling water quantity and gas content.
The water supply system consists of a water pump, a pressure sensor, a water tank, a shut-off valve and a flowmeter; the air supply system comprises an air pump, a shut-off valve, a natural gas tank and a flowmeter; the data acquisition system is composed of a data transmission part, a data acquisition part and a connection management part.
In a further optimized scheme, the sensor interface 3 is respectively connected with a temperature sensor, a pressure sensor and a resistance heater in an inserted mode.
Firstly, filling a water-saturated framework material 2 with a set grading granularity into a cylinder 4, compacting, installing a temperature sensor, a pressure sensor or a resistance heater through a sensor interface 3, inserting the filled water-saturated framework material 2, sequentially connecting an axial loading module, a sample generating module, a simulated exploitation depressurization module and a sand-discharging visual module, and adjusting a reducing press cap 21 to enable a regulating piece 20 to reach the diameter size required by test design; inserting the connected model body into the main body 31, connecting the two connectors 34 with the main body 31 through threads respectively, clamping the two connectors 34 with an axial loading module and a simulated exploitation depressurization module respectively, then integrally placing the combined one-dimensional test device for testing the physical properties of the hydrate into a low-temperature constant-temperature box, connecting peripheral systems such as a data acquisition system, a gas supply and water supply system, a gas exhauster and the like, closing a box door, setting the internal temperature of the constant-temperature box according to a hydrate phase equilibrium curve, exhausting air in the system, filling test gas such as natural gas in the system, and maintaining the set pressure to enable the water saturated framework material 2 to generate hydrate in a gap; after the hydrate is fully generated in the gaps of the water-saturated framework material 2, applying set axial pressure to the generated hydrate sample through an axial pressure piston 6; the gas pressure at the side of the sand-out visual module of the sample is reduced through the exhaust system, hydrate decomposition is promoted due to the fact that the balance condition of the hydrate is broken through the reduction of the gas pressure, and under the action of the axial pressure and the wrapping and clamping of gas and water in the hydrate decomposition process, the water-saturated framework material 2 flows to the sand-out visual module from the regulating piece 20 and the variable-diameter pressure cap 21, and then related data such as sand-out speed, sand-out quality and the like are measured and recorded through the meter.
In one embodiment of the present invention, in order to allow visual observation of the hydrate, a second sample generation module is provided, the second sample generation module comprising a glass cylinder 35, a left end cap 36, a right end cap 37 and a locking lever 38;
one end of the left end cover 36 is arranged at one end of the inner cavity of the glass cylinder 35 and is abutted against the inner wall of the glass cylinder 35, one end of the right end cover 37 is arranged at the other end of the inner cavity of the glass cylinder 35 and is abutted against the inner wall of the glass cylinder 35, a plurality of locking rods 38 are arranged in a circumferential array around the central line of the glass cylinder 35, two ends of the locking rods 38 penetrate through the left end cover 36 and the right end cover 37 respectively, two ends of the locking rods 38 are connected with nuts through threads respectively, adjusting holes are formed in the centers of the left end cover 36 and the right end cover 37, a water-saturated framework material 2 is arranged in the glass cylinder 35, and sealing rings are arranged at the abutted positions of the left end cover 36 and the right end cover 37 and the inner wall of the glass cylinder 35.
The right end cap 37 of the second sample generation module is connected to the simulated mining depressurization module to form a second sample body that can be replaced.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. The utility model provides a hydrate physical properties test one-dimensional test device, includes the low temperature thermostated container and sets up the body in the low temperature thermostated container, its characterized in that, the body includes: the device comprises a sample body, a sand-out visual module and a base (1);
the sample body comprises an axial loading module, a sample generating module and a simulated exploitation depressurization module;
the sample generation module is internally provided with a water-saturated framework material (2), and the sample generation module is provided with a plurality of sensor interfaces (3); the axial loading module is used for applying axial pressure to the water-saturated framework material (2); the water saturated framework material (2) can be discharged from the simulated production depressurization module; the sand-out visual module is used for observing the outflow quantity of the water-saturated framework material (2); the axial loading module and the simulated exploitation depressurization module are respectively arranged at two ends of the sample generation module; the axial loading module, the sample generating module and the simulated exploitation depressurization module are arranged in the sand-discharging visual module, and the axial loading module, the sample generating module, the simulated exploitation depressurization module and the sand-discharging visual module are positioned on the same straight line; the sand-discharging visual module is arranged on the top surface of the base (1);
the sample generation module comprises a cylinder body (4) and a press cap (5);
the pressure cap (5) is detachably connected with the outer wall of one end of the cylinder body (4), the pressure cap (5) is connected with the simulated exploitation depressurization module, and the other end of the cylinder body (4) is connected with the axial loading module; the sensor interfaces (3) are arranged on the outer wall of the cylinder body (4) at equal intervals;
the axial loading module comprises an axial pressing piston (6), an axial pressing cap (7), a pressing head (8), an axial pressing cylinder (9), a sealing sleeve (10) and a sand baffle (11);
the inner wall of one end of the shaft pressing cylinder (9) is detachably connected with the outer wall of the other end of the cylinder body (4), the other end of the shaft pressing cylinder (9) is detachably connected with the shaft pressing cap (7), the pressing sleeve (8) is arranged in the shaft pressing cylinder (9), the outer wall of the sealing sleeve (10) is respectively abutted with the inner wall of the cylinder body (4) and the inner wall of the shaft pressing cylinder (9), one end of the pressing sleeve (8) is positioned in the cylinder body (4) and is abutted with the inner wall of the cylinder body (4), the other end of the pressing sleeve (8) is provided with a plug hole, one end of the shaft pressing piston (6) penetrates through the end face of the shaft pressing cap (7) and is abutted with the inner wall of the plug hole, the sealing sleeve (10) is sleeved on the outer wall of the pressing sleeve (8), and the shaft pressing piston (6) and the pressing sleeve (8) are provided with first through holes (12) which are communicated; the sand baffle (11) is fixedly connected with the side surface of the pressure head (8);
the simulated exploitation depressurization module comprises a plug (19), an adjusting piece (20) and a reducing pressure cap (21);
one end of the plug (19) is arranged in the cylinder body (4), a hole elastic retainer ring (22) is arranged between the plug (19) and the inner wall of the cylinder body (4), the other end of the plug (19) penetrates through the pressing cap (5) and is sleeved with the reducing pressing cap (21), the regulating piece (20) is arranged between the reducing pressing cap (21) and the plug (19), the regulating piece (20) and the reducing pressing cap (21) are all provided with second through holes (23) which are communicated with each other, a seventh O-shaped ring (24) is arranged between the plug (19) and the reducing pressing cap (21), and a shaft elastic retainer ring (25) is sleeved on the outer wall of the plug (19) close to the end face of the pressing cap (5);
the sand-out visual module comprises a window press cap (26), an annular gasket (27), an annular gasket (28), a sealing gasket (29), window glass (30), a main body (31), an eighth O-shaped ring (32), a ninth O-shaped ring (33) and a joint (34);
the main body (31) is of a cylindrical structure, the outer wall of the bottom of the main body (31) is fixedly connected with the top surface of the base (1), two window press caps (26) are arranged and are respectively connected with the inner walls of the two ends of the main body (31), annular clamping grooves are respectively formed in the two ends of the inner wall of the main body (31), an annular gasket (27) is fixedly connected to the inner wall of the annular clamping grooves, the window glass (30) is of a cylindrical structure, the peripheral surface of the window glass (30) is abutted with the inner wall of the annular gasket (27), an eighth O-shaped ring (32) is arranged between the window glass (30) and the annular gasket (27), the annular gasket (28) is abutted with one side of the window glass (30), the sealing gasket (29) is arranged between the other side of the window glass (30) and the window press caps (26), the connectors (34) are symmetrically arranged on the peripheral wall of the main body (31) about the axis of the main body (30), the cylindrical structure is formed by abutting the peripheral surface of the window glass (30) with the inner wall of the main body (34), and the connectors (34) are axially connected with the loading module (33);
the sensor interface (3) is respectively inserted with a temperature sensor, a pressure sensor and a resistance heater;
a second sample generation module comprising a glass cylinder (35), a left end cap (36), a right end cap (37) and a locking lever (38); one end of left end cover (36) set up the one end in glass barrel (35) inner chamber, and with glass barrel (35) inner wall butt, the one end setting of right-hand member lid (37) is in the other end in glass barrel (35) inner chamber, and with glass barrel (35) inner wall butt, locking lever (38) are provided with a plurality of, a plurality of locking lever (38) are around glass barrel (35) central line circumference array setting, just the both ends of locking lever (38) run through respectively left end cover (36) with right-hand member lid (37), the both ends of locking lever (38) are provided with the nut through threaded connection respectively, left end cover (36) with regulation hole has all been seted up at right-hand member (37) center, be provided with in glass barrel (35) water saturation framework material (2), left end cover (36) with right-hand member lid (37) with glass barrel (35) inner wall butt department is provided with the sealing washer.
2. The one-dimensional test device for testing physical properties of hydrate according to claim 1, wherein: the novel hydraulic oil cylinder is characterized in that a first O-shaped ring (13) is arranged between the shaft pressing piston (6) and the shaft pressing cap (7), a second O-shaped ring (14) is arranged between the shaft pressing piston (6) and the inner wall of the shaft pressing cylinder (9), a third O-shaped ring (15) is arranged between the shaft pressing cap (7) and the shaft pressing cylinder (9), a fourth O-shaped ring (16) is arranged between the pressing head (8) and the sealing sleeve (10), a fifth O-shaped ring (17) is arranged between the sealing sleeve (10) and the inner wall of the shaft pressing cylinder (9), and a sixth O-shaped ring (18) is arranged between the sealing sleeve (10) and the inner wall of the cylinder (4).
3. The one-dimensional test device for testing physical properties of hydrate according to claim 1, wherein: the two connectors (34) are respectively closely connected with the axial compression piston (6) and the reducing compression cap (21).
4. A one-dimensional test device for testing physical properties of a hydrate according to claim 3, wherein: the connector (34) connected with the reducing press cap (21) is communicated with a gauge, and the connector (34) connected with the shaft press piston (6) is connected with a pressurizing system.
5. The one-dimensional test device for testing physical properties of hydrate according to claim 1, wherein: the low-temperature incubator is externally connected with a water supply system, an air supply system and a data acquisition system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110880537.1A CN113533677B (en) | 2021-08-02 | 2021-08-02 | One-dimensional test device for testing physical properties of hydrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110880537.1A CN113533677B (en) | 2021-08-02 | 2021-08-02 | One-dimensional test device for testing physical properties of hydrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113533677A CN113533677A (en) | 2021-10-22 |
| CN113533677B true CN113533677B (en) | 2023-06-23 |
Family
ID=78090054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110880537.1A Active CN113533677B (en) | 2021-08-02 | 2021-08-02 | One-dimensional test device for testing physical properties of hydrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113533677B (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042996A (en) * | 2010-07-01 | 2011-05-04 | 青岛海洋地质研究所 | Experimental apparatus for thermal diffusion effect of natural gas hydrate in porous medium |
| CN102052065A (en) * | 2010-07-01 | 2011-05-11 | 青岛海洋地质研究所 | Simulation exploiting experiment device for natural gas hydrate |
| CN104950074B (en) * | 2015-05-21 | 2016-09-14 | 中国科学院力学研究所 | Decomposition of hydrate seepage flow causes the shake out experimental technique measured and experimental provision |
| CN106680435B (en) * | 2017-01-12 | 2019-04-09 | 中国石油大学(华东) | A kind of hydrate produces sand experimental system for simulating |
| CN107860569B (en) * | 2017-10-31 | 2019-07-02 | 中国石油大学(华东) | The evaluation experimental device and method of sand control screen blocking characteristic during exploitation of gas hydrates |
| CN108316913B (en) * | 2018-01-08 | 2021-06-01 | 中国海洋石油集团有限公司 | Device and method for simulating and measuring sand production in marine natural gas hydrate reservoir exploitation process |
| CN209179748U (en) * | 2018-09-27 | 2019-07-30 | 中国石油大学(华东) | A kind of deep water gas hydrates well head stability experiment device |
| CN109557253B (en) * | 2018-11-02 | 2019-07-23 | 广州海洋地质调查局 | A kind of comprehensive hydrate simulation system and its experimental method |
| CN109513414A (en) * | 2018-12-12 | 2019-03-26 | 华南理工大学 | A kind of multi-functional adiabatic reaction kettle for gas hydrates simulation exploitation |
| CN109538170A (en) * | 2019-01-21 | 2019-03-29 | 吉林大学 | The pressure test device and method of fluid jet in-situ retorting gas hydrates |
| CN209802865U (en) * | 2019-01-28 | 2019-12-17 | 中国地质大学（武汉） | Multifunctional reaction kettle for simulating response and sand production of hydrate exploitation reservoir |
| CN209938583U (en) * | 2019-03-13 | 2020-01-14 | 西安开天铁路电气股份有限公司 | Sanding unit pipeline structure with adjustable exhaust aperture |
| CN110454146A (en) * | 2019-07-31 | 2019-11-15 | 中国地质大学（武汉） | The device and method to shake out in horizontal well with sand control in evaluation hydrate recovery process |
| CN111691881B (en) * | 2020-07-03 | 2023-12-22 | 中国石油大学(北京) | Device and method for simulating thermal settlement of hydrate-containing stratum |
-
2021
- 2021-08-02 CN CN202110880537.1A patent/CN113533677B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113533677A (en) | 2021-10-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109557253B (en) | A kind of comprehensive hydrate simulation system and its experimental method | |
| CN107894383B (en) | Device and method for measuring permeability of sediment containing hydrate under triaxial stress condition | |
| CN105403672B (en) | Simulate the experimental provision and method of exploitation of gas hydrates process stratum deformation | |
| CN105259003B (en) | A kind of experimental provision and method for synthesizing ocean gas hydrate sample | |
| CN109372499B (en) | Geological reservoir radial flow simulation system | |
| CN201803962U (en) | Heterogeneous model CT scanning simulation device | |
| CN104155188B (en) | A kind of gas hydrates deposit mechanical characteristic visual test device | |
| CN102735548B (en) | Multifunctional true triaxial flow solid coupling test system | |
| CN102735549B (en) | Multifunctional true triaxial flow solid coupling pressure chamber | |
| CN103174412A (en) | Coal bed gas reservoir layering co-mining high temperature and high pressure discharging mining dynamic evaluation instrument | |
| CN201654010U (en) | Plugging tester | |
| CN104833582A (en) | Natural gas hydrate sediment triaxial test device | |
| CN109557252A (en) | A kind of comprehensive hydrate simulation system | |
| CN108051354B (en) | Hypotonic hydrate deposit permeability measuring method and device based on pulse attenuation analysis | |
| CN105334142A (en) | Experiment device for simulating shield mud membrane formation | |
| CN211206162U (en) | Device for researching penetration rule of drilling and completion fluid along stratum around well | |
| CN110924907B (en) | Multi-section pressure measurement water-gas alternating oil extraction experimental device and method for CT scanning | |
| CN205209906U (en) | Experimental device for test sand control screen pipe erosion resistant ability | |
| CN113533677B (en) | One-dimensional test device for testing physical properties of hydrate | |
| CN202866787U (en) | Whole course visible experiment device for displacement of reservoir oil of high-pressure gas injection | |
| CN108181440B (en) | Experimental device for testing water quality index of reinjection water of large-scale underground water-sealed cave depot | |
| CN204903490U (en) | Two multi -functional rock core fasteners of confined pressure of fine and close oil reservoir of crack nature and experimental apparatus | |
| CN110631897A (en) | Multifunctional rock core holder | |
| CN100487755C (en) | Coalbed methane reservoir forming simulation device | |
| CN114427997B (en) | Manufacturing method of fracture-cavity core model, model and water-flooding experimental method |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |