CN109696360B - Hydrate exploitation reservoir response and sand production simulation multifunctional reaction kettle - Google Patents
Hydrate exploitation reservoir response and sand production simulation multifunctional reaction kettle Download PDFInfo
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- CN109696360B CN109696360B CN201910080625.6A CN201910080625A CN109696360B CN 109696360 B CN109696360 B CN 109696360B CN 201910080625 A CN201910080625 A CN 201910080625A CN 109696360 B CN109696360 B CN 109696360B
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- 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
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The application discloses a hydrate exploitation reservoir response and sand production simulation multifunctional reaction kettle, which comprises: the kettle comprises a kettle body, an upper end cover, a lower end cover, a piston, a plug and a water-cooling jacket; the kettle body is hollow to hold a sample; the upper end cover is provided with a shaft pressure injection hole, and the piston is pushed to move by the consolidation pressure provided by the shaft pressure injection hole so as to carry out consolidation test; a fluid inlet and a fluid outlet are respectively arranged on the lower end cover and the piston so as to perform a penetration test; the piston and the lower end cover are respectively provided with an acoustic wave transmitting probe and an acoustic wave receiving probe so as to carry out acoustic wave test; the side wall of the kettle body is also provided with a plurality of resistivity probes for resistivity test; the plug is outwards pulled out to enable the kettle body to be communicated with the sand outlet for sand outlet testing, and a collecting port is further formed below the kettle body. The application can perform the synthesis and decomposition test of the hydrate, and monitor the stress consolidation, sand sedimentation, fluid migration law, acoustic wave, resistivity and the like of the sample under the condition of maintaining the pressure of the overlying stratum.
Description
Technical Field
The application relates to the technical field of sand production and multi-physical parameter combined measurement, in particular to a multifunctional reaction kettle for hydrate exploitation reservoir response and sand production simulation.
Background
The hydrate mineral deposit occurrence environment in the nature is quite complex, in the actual exploitation process, along with the decomposition and output of multiphase fluid such as water, gas and the like, the effective force field around the exploited stratum can change in a complex way, the consolidation compaction state of the stratum also generates corresponding response behaviors such as sedimentation and the like along with the change of the hydrate, and the safety and stability of the whole exploitation process can be greatly influenced.
On the other hand, the decomposition of the hydrate enables the solid phase component to be converted into the gas phase component and the liquid phase component, the pore volume of the reservoir is increased to a certain extent, the smooth flow of gas is possibly facilitated, but sedimentation and compaction of the stratum structure can further influence the microscopic pore structure of the reservoir, the change of the permeability coefficient is caused, the output of the water, gas and fluid is changed, and the high efficiency of the whole exploitation process is influenced to a certain extent. In addition, after a series of stress field changes, the reservoir may have a risk of local damage and stripping during sedimentation, and the continuous migration process of water and gas fluid may also cause position change of particles and weakening of a supporting structure, which threatens safety and stability and efficiency of the exploitation process.
Aiming at the process, parameters of the production and sand production processes such as corresponding temperature, pressure, saturation, gas production, water production, sand production, relative and absolute permeability and the like are focused, and safety process parameters such as stratum settlement, porosity, effective stress and the like are also important to master the evolution characteristics of stratum conditions in the whole process. Therefore, in order to meet the requirement of hydrate exploitation, the coupling process of multiphase multi-field multi-factor control is fundamentally known, the sand production and reservoir response conditions and corresponding physical parameter changes in the hydrate exploitation process are explored, and it is necessary to design an indoor simulation experiment device for researching the sand production and exploitation response conditions of a focused hydrate reservoir, and meanwhile, researching various parameter evolution rules of porosity, wave velocity, resistivity, permeability and the like in the related process.
Disclosure of Invention
In view of the above, the embodiment of the application provides a hydrate exploitation reservoir response and sand production simulation multifunctional reaction kettle, which can explore formation stability and permeability response change mechanisms caused by sand production in a hydrate exploitation process, discuss direct parameters such as gas production, water production, sand production and the like in the processes, and dynamic response relations of indirect parameters reflecting formation information such as wave velocity, resistivity and the like and hydrate decomposition degree, analyze influences of parameters such as hydrate saturation and the like on the sand production process, the exploitation process and the formation stability, and further provide services for determining a hydrate sediment exploitation scheme.
In order to achieve the above purpose, the present application adopts a technical scheme that: hydrate exploitation reservoir response and sand production simulation multifunctional reaction kettle comprises: the kettle comprises a kettle body, an upper end cover, a lower end cover, a piston, a plug and a water-cooling jacket, wherein the upper end cover and the lower end cover are respectively positioned at the top and the bottom of the kettle body;
the kettle body is hollow so as to place a sample; the upper end cover is provided with a shaft pressure injection hole, and the piston is pushed to move by the consolidation pressure provided by the shaft pressure injection hole so as to carry out consolidation test;
the lower end cover is also provided with a fluid inlet, and the piston is also provided with a fluid outlet for performing a penetration test;
an acoustic wave receiving probe is arranged at the bottom of the piston, and an acoustic wave transmitting probe is arranged at the top of the lower end cover so as to perform acoustic wave test; the side wall of the kettle body is also provided with a plurality of resistivity probes for resistivity test;
the plug is pulled out outwards to enable the kettle body to be communicated with the sand outlet for sand outlet test, a collecting port is further arranged below the kettle body, and gas, liquid and solid after sand outlet test are collected through different outlets of the collecting port respectively; the plugs are inserted inward to seal the tank body when consolidation, penetration, sonic or resistivity tests are performed individually or simultaneously.
Further, an upper permeable stone and a lower permeable stone are respectively arranged at the bottom of the piston and the top of the lower end cover, and the upper permeable stone surrounds the sound wave receiving probe and the lower permeable stone surrounds the sound wave transmitting probe.
Further, an upper end cover sealing ring, a lower end cover sealing ring, a piston sealing ring, a transmitting probe sealing ring, a receiving probe sealing ring and a plug sealing ring are respectively arranged on the upper end cover, the lower end cover, the piston, the sound wave transmitting probe, the sound wave receiving probe and the plug.
Further, the upper end cover, the lower end cover and the plug are all connected with the kettle body through fixing devices.
Furthermore, a transparent window is further arranged on the plug, so that the sand outlet condition inside the sample can be observed in real time.
Further, the collecting port is sequentially provided with a gas port, a liquid port and a solid port from top to bottom so as to collect gas, liquid and solid after sand discharge test.
Further, the resistivity probes are symmetrically arranged on the kettle body and vertically distributed along the side wall, and are used for collecting the resistivity distribution condition of the longitudinal section of the reaction kettle.
Further, a sand control net is further arranged at the communication part of the plug and the kettle body and used for inhibiting the migration of sand particles along with the fluid in the sand production process, and the sand control effect of the sand control net is tested.
Furthermore, the inner wall of the kettle body is also provided with a permeable stone, so that fluid injected during sand test is uniformly introduced into the sample.
Furthermore, the reaction kettle is connected to the overturning bracket through a locking device so as to adjust the position of the reaction kettle.
The technical scheme provided by the embodiment of the application has the beneficial effects that: (1) The special reaction kettle can be used for conveniently filling sample framework materials, simulating different submarine hydrate reservoir structures and synthesizing hydrates in situ, and aiming at different mining areas, truly reflecting the occurrence conditions and structural characteristics of the hydrate reservoir; (2) The visual transparent window is arranged on the sand outlet of the reaction kettle, and in the hydrate sand outlet test process, the change of indexes such as gas production, water production, sand production and the like can be monitored through an external system, and the change condition of the stratum structure can be observed in real time through the transparent window; (3) The sand outlet of the reaction kettle is provided with a sliding plug, and through extrapolation and interpolation operations of the plug, the method can be realized: when the sand outlet is tested, the kettle body is ensured to be communicated with the sand outlet, the stable condition of the hydrate in the reaction kettle is broken, the hydrate is promoted to be decomposed, and a sand outlet channel is formed; the kettle body is isolated from the outside during non-sand discharge test (consolidation, seepage, sonic wave, resistivity and other test), and the stable condition of the hydrate in the reaction kettle is maintained; (4) The acoustic wave and resistivity probes are integrated on the reaction kettle, acoustic and electrical parameter changes of the reservoir can be monitored in real time through acoustic wave and resistivity tests while the sand process is measured, and interaction information between the hydrate and the skeleton in the reservoir is inverted; (5) Through consolidation-seepage-sand production tests of the reservoir, reservoir response conditions under different exploitation conditions can be known, a fluid-solid migration and seepage rule can be obtained, and economic indexes such as gas production, water production and the like under different exploitation working conditions can be analyzed.
Drawings
FIG. 1 is a front view of the structure of a reaction vessel of the present application;
FIG. 2 is a right side view of the structure of the reaction kettle of the present application;
FIG. 3 is a schematic diagram of a turnover frame according to the present application;
fig. 4 is a schematic structural diagram of a flip bracket according to the present application.
The device comprises a 1-kettle body, a 1-1-fluid port, a 1-2-pressure control port, a 2-upper end cover, a 2-1-shaft pressure injection hole, a 2-2-upper end cover sealing ring, a 3-lower end cover, a 3-1-fluid inlet, a 3-2-lower end cover sealing ring, a 4-piston, a 4-1-fluid outlet, a 4-2-piston sealing ring, a 5-upper permeable stone, a 6-lower permeable stone, a 7-sound wave receiving probe, a 7-1-transmitting and receiving sealing ring, an 8-sound wave transmitting probe, an 8-1-receiving and transmitting sealing ring, a 9-water cooling jacket, a 10-resistivity probe, a 11-plug, a 11-1-sand control net, a 11-2-transparent window, a 11-3-plug sealing ring, a 12-permeable stone, a 13-collecting port, a 13-1-gas port, a 13-2-liquid port, a 13-3-solid port, a 14-turnover bracket, a 14-1-locking device and a 15-fixing device.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, an embodiment of the present application provides a hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle, comprising: the kettle comprises a kettle body 1, an upper end cover 2 and a lower end cover 3 which are respectively positioned at the top and the bottom of the kettle body 1, a piston 4 penetrating through the upper end cover 3, a plug 11 arranged on the side surface of the kettle body 1, and a water-cooling jacket 9 arranged on the periphery of the kettle body 1. The upper end cover 2, the lower end cover 3 and the plug 11 can be connected with the kettle body 1 through fixing devices 15, and preferably, the fixing devices 15 can be a combination of nuts and bolts. The reaction kettle can be used for consolidation test, seepage test, sound wave test, side wall sand discharge test, resistivity test and the like, can be used for synthesizing and decomposing hydrate, and can be used for monitoring stress consolidation, sand discharge sedimentation and fluid migration rules of a sample and change rules of formation information such as sound waves and resistivity in the corresponding process under the condition of maintaining the pressure of an overlying formation.
Preferably, the kettle body 1 is a cylinder, and a sample is placed in the hollow part of the kettle body 1, so that the kettle body can be used as a space for synthesizing and testing a hydrate reservoir sample. The upper end cover 2 and the lower end cover 3 are respectively in sealing connection with the kettle body 1 and are respectively used for sealing the top and the bottom of the kettle body 1. Preferably, the materials of the kettle body 1, the upper end cover 2 and the lower end cover 3 are titanium alloy. Preferably, the kettle body 1 is in threaded connection with the upper end cover 2 and the lower end cover 3. For example, the well-sealed kettle body 1 can bear the pressure of up to 20MPa, and the water-cooling jacket 9 at the periphery of the kettle body 1 can provide effective temperature control of-10 to +100 ℃ so as to meet the hydrate formation condition.
The piston 4 passes through the center of the upper end cover 2 and is attached to the inner wall of the kettle body 1, the piston 4 is movably connected with the inner wall of the kettle body 1 and the center of the upper end cover 2 in a sealing manner, and the upper end cover 2 is provided with a shaft pressing injection hole 2-1. During consolidation test, hydraulic pressure is injected through the shaft pressure injection hole 2-1 by a hydraulic device to provide consolidation pressure to push the piston 4 to move, and the consolidation displacement amount of the sample is determined through the displacement of the piston 4.
The lower end cover 3 is also provided with a fluid inlet 3-1, the piston 4 is also provided with a fluid outlet 4-1 which is used as a fluid channel during permeation test, the Darcy law principle is adopted during permeation test, the fluid flows in the fluid inlet 3-1 of the lower end cover 3 during test, passes through a sample in the kettle body 1 and flows out from the fluid outlet 4-1 of the piston 4.
The bottom of the piston 4 is provided with an acoustic wave receiving probe 7, the top of the lower end cover 3 is provided with an acoustic wave transmitting probe 8, and the acoustic wave receiving probe 7 and the acoustic wave transmitting probe 8 are respectively used for receiving and transmitting acoustic wave signals penetrating through a sample when acoustic wave testing is carried out. The bottom of piston 4 and the top of lower end cover 3 still are equipped with last permeable stone 5 and lower permeable stone 6 respectively, and is preferred, go up permeable stone 5 and lower permeable stone 6 and be annular permeable stone, go up permeable stone 5 and encircle sound wave receiving probe 7, lower permeable stone 6 and encircle sound wave transmitting probe 8, the bottom of sound wave receiving probe 7 keeps the level with the bottom surface of last permeable stone 5, the top of sound wave transmitting probe 8 keeps the level with the top surface of lower permeable stone 6.
The plug 11 traverses the kettle body 1 from one side wall of the kettle body 1, is communicated with the kettle body 1, and can be pulled out to enable the kettle body 1 to be communicated with the outside or inserted inwards to seal the kettle body 1. The connection part (namely a sand outlet) of the plug 11 and the kettle body 1 is also provided with a sand control net 11-1 for inhibiting the migration of sand particles along with fluid in the sand outlet process, and the sand control effect of the sand control net 11-1 can be tested. The plug 11 is also provided with a transparent window 11-2. The other side wall of the kettle body 1 (the side wall is opposite to the side wall where the plug 11 is positioned) is also provided with a plurality of fluid ports 1-1 which are used as fluid channels for air inlet and/or water inlet to simulate the flow of water and gas, and the fluid enters the kettle through the fluid ports 1-1 and then contacts with a sample in the kettle. The side wall of the kettle body 1 (the side wall where the plug 11 is positioned) is also provided with a pressure control port 1-2, and a back pressure valve is arranged through the pressure control port 1-2 and used for adjusting outlet pressure in the sand discharge process. The inner wall (the position corresponding to the sand outlet) of the kettle body 1 can be further provided with a permeable stone 12, so that fluid such as water, gas and the like injected during sand testing can be uniformly introduced into the sample.
When the sand discharge test is carried out, the reaction kettle needs to be communicated with the external atmospheric environment, the plug 11 is pulled out so that materials such as gas, water, sand and the like flow out, and meanwhile, the transparent window 11-2 on the plug 11 can observe the sand discharge condition inside the sample in real time; when other tests are independently or synchronously carried out, the reaction kettle needs to be isolated from the external environment, the plug 11 is inserted inwards to isolate the kettle body 1 from an external sand-discharging collecting system, and the airtight stable condition inside the reaction kettle is maintained. The lower part of the kettle body 1 is also provided with a collecting port 13 which is positioned below the plug 11, the collecting port 13 is sequentially provided with a gas port 13-1, a liquid port 13-2 and a solid port 13-3 from top to bottom, and gas, liquid and solid after sand discharge test are collected through the gas port 13-1, the liquid port 13-2 and the solid port 13-3 respectively.
The upper end cover 2 is provided with an upper end cover sealing ring 2-2, the lower end cover 3 is provided with a lower end cover sealing ring 3-2, the piston 4 is provided with a piston sealing ring 4-2, the acoustic wave receiving probe 7 is provided with a transmitting and receiving sealing ring 7-1, the acoustic wave transmitting probe 8 is provided with a receiving and transmitting sealing ring 8-1, the plug 11 is also provided with a plug sealing ring 11-3, and the sealing rings are convenient to maintain and replace, and simultaneously ensure the integral tightness of the upper end cover 2, the lower end cover 3, the piston 4, the acoustic wave receiving probe 7, the acoustic wave transmitting probe 8 and the plug 11.
The side wall of the kettle body 1 is also provided with a plurality of resistivity probes 10, and the resistivity probes 10 are symmetrically arranged on the kettle body 1. According to the resistivity test requirement, the resistivity imaging device is arranged in parallel, namely vertically distributed along the side wall of the reaction kettle, and 8 pairs of resistivity probes 10 are taken as an example in fig. 2 and are used for acquiring the resistivity distribution condition of the longitudinal section of the reaction kettle, and resistivity imaging is carried out according to the resistivity distribution condition.
As shown in fig. 3 to 4, the position of the reaction vessel is controlled by the tilting bracket 14, and the position of the whole reaction vessel or the sample can be adjusted between horizontal placement (refer to fig. 4) and vertical placement (refer to fig. 3), and the position of the reaction vessel is fixed by the locking device 14-1 of the tilting bracket 14. In the seepage test process, the reaction kettle is in a horizontal placement state, and in the rest test, the reaction kettle is in a vertical placement state.
Through the structural design and component installation of the reaction kettle, the application can realize the following functions: (1) The temperature and pressure conditions in the reaction kettle are controlled in real time, so that the synthesis and decomposition processes of the hydrate are realized; (2) Simulating the stress of an overburden stratum of the hydrate reservoir to realize the test of the consolidation process of the hydrate reservoir; (3) Simulating gas production, water production and sand production process test of a hydrate reservoir under different exploitation fluid flow conditions; (4) The permeability test of the hydrate reservoir is realized under the conditions of hydrate existence, decomposition, consolidation, sand production and the like; (5) And simulating the monitoring and information inversion of the acoustic wave and the resistivity parameter of the hydrate reservoir under different exploitation conditions.
The comprehensive test of multi-field (temperature field, pressure field, stress field, seepage field) multiphase (gas, water and sand) coupling process under the hydrate exploitation sand production conditions is realized through the integrated application of consolidation, seepage and sand production test components, and the comprehensive detection and inversion of reservoir information under the hydrate exploitation sand production conditions are realized through the integrated application of acoustic wave and resistivity test components; the method is favorable for exploring the change characteristics of the formation porosity and the ground stress and the evolution rule of the permeability in the reservoir hydrate decomposition and corresponding sand production process, and further understanding the influence of the structural changes such as the porosity and the ground stress on the permeability characteristic. Finally, the gas production, water production, sand production rules and mechanisms are mastered, and advice is provided for hydrate exploitation.
The technical scheme provided by the embodiment of the application has the beneficial effects that: (1) The special reaction kettle can be used for conveniently filling sample framework materials, simulating different submarine hydrate reservoir structures and synthesizing hydrates in situ, and aiming at different mining areas, truly reflecting the occurrence conditions and structural characteristics of the hydrate reservoir; (2) The visual transparent window is arranged on the sand outlet of the reaction kettle, and in the hydrate sand outlet test process, the change of indexes such as gas production, water production, sand production and the like can be monitored through an external system, and the change condition of the stratum structure can be observed in real time through the transparent window; (3) The sand outlet of the reaction kettle is provided with a sliding plug, and through extrapolation and interpolation operations of the plug, the method can be realized: when the sand outlet is tested, the kettle body is ensured to be communicated with the sand outlet, the stable condition of the hydrate in the reaction kettle is broken, the hydrate is promoted to be decomposed, and a sand outlet channel is formed; the kettle body is isolated from the outside during non-sand discharge test (consolidation, seepage, sonic wave, resistivity and other test), and the stable condition of the hydrate in the reaction kettle is maintained; (4) The acoustic wave and resistivity probes are integrated on the reaction kettle, acoustic and electrical parameter changes of the reservoir can be monitored in real time through acoustic wave and resistivity tests while the sand process is measured, and interaction information between the hydrate and the skeleton in the reservoir is inverted; (5) Through consolidation-seepage-sand production tests of the reservoir, reservoir response conditions under different exploitation conditions can be known, a fluid-solid migration and seepage rule can be obtained, and economic indexes such as gas production, water production and the like under different exploitation working conditions can be analyzed.
Noteworthy are: in the description of the present application, the meaning of "a number" is two or more, unless explicitly defined otherwise. In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, as will be understood by those of ordinary skill in the art, in view of the specific meaning of the terms in the present application. The above-mentioned fixing and other connection methods are all known to those skilled in the art, and may be, for example, fixing methods such as gluing and welding.
In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of such orientation terms should not limit the scope of the claimed application.
The embodiments described above and features of the embodiments herein may be combined with each other without conflict.
The foregoing description of the preferred embodiments of the application is not intended to limit the application to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the application are intended to be included within the scope of the application.
Claims (10)
1. The utility model provides a hydrate exploitation reservoir response and play sand simulation multi-functional reation kettle which characterized in that: comprising the following steps: the kettle comprises a kettle body, an upper end cover, a lower end cover, a piston, a plug and a water-cooling jacket, wherein the upper end cover and the lower end cover are respectively positioned at the top and the bottom of the kettle body;
the kettle body is a hollow cylinder for placing a sample; the upper end cover is provided with a shaft pressure injection hole, and the piston is pushed to move by the consolidation pressure provided by the shaft pressure injection hole so as to carry out consolidation test;
the lower end cover is also provided with a fluid inlet, and the piston is also provided with a fluid outlet for performing a penetration test;
an acoustic wave transmitting probe is arranged at the bottom of the piston, and an acoustic wave receiving probe is arranged at the top of the lower end cover so as to perform acoustic wave test; the side wall of the kettle body is also provided with a plurality of resistivity probes for resistivity test;
the plug is pulled out outwards to enable the kettle body to be communicated with the sand outlet for sand outlet test, a collecting port is further arranged below the kettle body, and gas, liquid and solid after sand outlet test are collected through different outlets of the collecting port respectively; the plugs are inserted inward to seal the tank body when consolidation testing, penetration testing, sonic testing or resistivity testing is performed independently or simultaneously.
2. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the bottom of the piston and the top of the lower end cover are also respectively provided with an upper permeable stone and a lower permeable stone, and the upper permeable stone surrounds the sound wave receiving probe and the lower permeable stone surrounds the sound wave transmitting probe.
3. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the upper end cover, the lower end cover, the piston, the sound wave transmitting probe, the sound wave receiving probe and the plug are respectively provided with an upper end cover sealing ring, a lower end cover sealing ring, a piston sealing ring, a transmitting probe sealing ring, a receiving probe sealing ring and a plug sealing ring.
4. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the upper end cover, the lower end cover and the plug are all connected with the kettle body through fixing devices.
5. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: and a transparent window is further arranged on the plug so as to observe the sand outlet condition inside the sample in real time.
6. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the collecting port is sequentially provided with a gas port, a liquid port and a solid port from top to bottom so as to collect gas, liquid and solid after sand discharge test.
7. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the resistivity probes are symmetrically arranged on the kettle body and vertically distributed along the side wall, and are used for collecting the resistivity distribution condition of the longitudinal section of the reaction kettle.
8. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: and a sand control net is further arranged at the communication part of the plug and the kettle body and used for inhibiting the migration of sand particles along with the fluid in the sand production process, and the sand control effect of the sand control net is tested.
9. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the inner wall of the kettle body is also provided with a permeable stone, so that fluid injected during sand test is uniformly introduced into the sample.
10. The hydrate recovery reservoir response and sand production simulation multifunctional reaction kettle according to claim 1, wherein: the reaction kettle is connected to the overturning bracket through a locking device so as to adjust the position of the reaction kettle.
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| CN110630228B (en) * | 2019-09-23 | 2023-11-03 | 中国地质大学（武汉） | Evaluation of CO 2 /N 2 Device and method for sand production and sand prevention of shaft during hydrate exploitation by displacement method |
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