CN114002073B - Device and method for testing physical properties of water body by considering deposition angle - Google Patents

Device and method for testing physical properties of water body by considering deposition angle Download PDF

Info

Publication number
CN114002073B
CN114002073B CN202111269922.9A CN202111269922A CN114002073B CN 114002073 B CN114002073 B CN 114002073B CN 202111269922 A CN202111269922 A CN 202111269922A CN 114002073 B CN114002073 B CN 114002073B
Authority
CN
China
Prior art keywords
test
pressure chamber
sample
assembly
block
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
Application number
CN202111269922.9A
Other languages
Chinese (zh)
Other versions
CN114002073A (en
Inventor
公彬
张瑞琪
蒋宇静
李彦龙
纳赛尔·戈尔萨纳米
毕延续
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Science and Technology
Original Assignee
Shandong University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong University of Science and Technology filed Critical Shandong University of Science and Technology
Priority to CN202111269922.9A priority Critical patent/CN114002073B/en
Publication of CN114002073A publication Critical patent/CN114002073A/en
Application granted granted Critical
Publication of CN114002073B publication Critical patent/CN114002073B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36—Embedding or analogous mounting of samples
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/38—Diluting, dispersing or mixing samples
    • 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
    • G01N3/02—Details
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/36—Embedding or analogous mounting of samples
    • G01N2001/366—Moulds; Demoulding
    • 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
    • G01N2203/0001—Type of application of the stress
    • G01N2203/0003—Steady
    • 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
    • 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
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0222—Temperature
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/022—Environment of the test
    • G01N2203/0244—Tests performed "in situ" or after "in situ" use
    • G01N2203/0246—Special simulation of "in situ" conditions, scale models or dummies
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/025—Geometry of the test
    • G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/026—Specifications of the specimen
    • G01N2203/0298—Manufacturing or preparing specimens
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0676—Force, weight, load, energy, speed or acceleration
    • 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
    • G01N2203/02—Details not specific for a particular testing method
    • G01N2203/06—Indicating or recording means; Sensing means
    • G01N2203/067—Parameter measured for estimating the property
    • G01N2203/0682—Spatial dimension, e.g. length, area, angle

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (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 device for testing mechanical properties of water body with deposition angle considered, which comprises a test bed, wherein a sample preparation part and a test part are arranged on the test bed; the sample preparation part comprises a frame which is detachably connected with the top surface of the test bed; the top surface of the frame is fixedly connected with a sample preparation assembly, the bottom end of the sample preparation assembly is provided with an oblique angle, and the sample preparation assembly is electrically connected with the test part; a die for manufacturing the sample is arranged below the sample manufacturing assembly; the test part comprises a test main body for installing a sample and a data collection assembly, wherein two ends of the test main body are respectively communicated with a fluid supply assembly and a fluid recovery assembly, and the fluid supply assembly and the fluid recovery assembly are respectively electrically connected with the data collection assembly; the sample preparation assembly is electrically connected with the data collection assembly. The invention has simple structure and strong applicability, can conveniently simulate the mechanical properties of natural gas hydrate deposit layers at different angles, is convenient for test and research, greatly shortens the test process and simplifies the test process.

Description

Device and method for testing physical properties of water body by considering deposition angle
Technical Field
The invention relates to the technical field of energy exploitation, in particular to a device and a method for testing mechanical properties of water body by considering a deposition angle.
Background
Natural gas hydrate (combustible ice) is an ice-like crystalline substance formed by natural gas and water under the conditions of high pressure and low temperature, and is widely distributed in deep sea or land area permafrost, and only generates a small amount of carbon dioxide and water after combustion, pollution is far less than coal, petroleum and the like, and reserves are huge, so the natural gas hydrate is internationally recognized as a substitute energy source of petroleum and the like.
According to drilling data, the natural gas hydrate deposit layer is formed by non-uniform deposition among the layers of the bands in the geological deposition process, so that various angles exist among the natural gas hydrate storage layers, the strength of the stratum deposit layer is reduced by recovering natural gas from the natural gas hydrate deposit layer, the instability of the stratum is increased, and disasters such as geological collapse, ground landslide and the like are caused. How to economically and safely mine natural gas hydrate in sedimentary formations at different angles, and simultaneously, geological disasters such as landslide and sedimentary formation collapse can not be caused, and the mechanical properties of the hydrate sediments need to be studied deeply.
Disclosure of Invention
The invention aims to provide a hydrate mechanical property test device considering a deposition angle so as 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 device for testing the mechanical properties of water and gas by considering a deposition angle, which comprises a test bed, wherein a sample preparation part and a test part are arranged on the test bed;
The sample preparation part comprises a frame, and the frame is detachably connected with the top surface of the test bed; the top surface of the frame is fixedly connected with a sample preparation assembly, the bottom end of the sample preparation assembly is provided with an oblique angle, and the sample preparation assembly is electrically connected with the test part; a die for manufacturing the sample is arranged below the sample preparation assembly;
The test part comprises a test main body and a data collection assembly, wherein the test main body is used for installing the sample, two ends of the test main body are respectively communicated with a fluid supply assembly and a fluid recovery assembly, and the fluid supply assembly and the fluid recovery assembly are respectively electrically connected with the data collection assembly; the sample preparation component is electrically connected with the data collection component.
Preferably, the sample preparation assembly comprises a hydraulic oil cylinder fixedly connected with the top end of the frame, a pressure head is fixedly connected with the output end of the hydraulic oil cylinder, and the bottom end of the pressure head is provided with the bevel angle; and a third sensor is fixedly connected to the hydraulic oil cylinder and is electrically connected with the data collection assembly.
Preferably, the die comprises a sample tube fixedly connected with the bottom surface of the frame, and the inner cavity of the sample tube is matched with the pressure head; the bottom wall is fixedly connected with the bottom end of the inner cavity of the sample tube and is detachably connected with the bottom end of the frame.
Preferably, the test main body comprises a main body frame, and the bottom end of the main body frame is fixedly connected with the top surface of the test bed; an inner pressure chamber is arranged on the bottom surface of the inner cavity of the main body frame, and the inner cavity of the inner pressure chamber is used for installing the sample; the outer wall of the inner pressure chamber is wound with a heat exchanger; the outside of the inner confining pressure chamber is provided with a confining pressure chamber which is coaxially arranged with the inner confining pressure chamber, and the confining pressure chamber is in sliding connection with the side wall of the main body frame; the top surface of the main body frame is fixedly connected with a pressing assembly, the pressing assembly is fixedly connected with the confining pressure chamber, and the pressing assembly is electrically connected with the data collecting assembly; the inner pressure chamber is communicated with the fluid recovery assembly; the confining pressure chamber communicates with the fluid supply assembly.
Preferably, the bottom end of the confining pressure chamber is fixedly connected with a aligning block, and the aligning block is abutted with the inner confining pressure chamber; the self-aligning block is provided with a built-in load sensor, and the built-in load sensor is electrically connected with the data collection assembly.
Preferably, the lower end of the inner pressure chamber is fixedly connected with the main body frame through a supporting plate, and the fluid recovery assembly penetrates through the supporting plate and then is communicated with the inner cavity of the inner pressure chamber; the top wall of the inner pressure chamber is in sliding connection with the inner cavity of the inner pressure chamber, and the aligning block is abutted with the top wall; the fluid supply assembly penetrates through the aligning block and the top wall and then is communicated with the inner cavity of the inner pressure chamber; the inner cavity of the inner pressure chamber is used for installing the sample, the sample is divided into a first test block and a second test block, and the first test block is matched with the second test block.
A method for testing mechanical properties of a hydrate in consideration of a deposition angle, comprising the following test steps:
s1, manufacturing the sample; selecting an appropriate bevel angle to press the sample, and recording data of the sample;
S2, installing the sample to be measured; installing the sample into the inner cavity of the inner pressure chamber, connecting the fluid supply assembly and the fluid recovery assembly, and connecting the fluid supply assembly and the fluid recovery assembly with the data collection assembly;
s3, performing a test; performing a test according to a set test target;
S4, collecting test data, and collecting the test data through the data collecting assembly;
S5, processing test data, analyzing and processing the data collected by the data collection assembly, and summarizing rules.
Preferably, in the step S1, aggregate is filled from the bottom wall position when the sample is prepared; the temperature for preparing the sample is not higher than 0 ℃.
Preferably, in the step S1, the first test block includes only two manufacturing methods, and the second test block includes three manufacturing methods.
Preferably, in the step S2, the center hole of the aligning block is opposite to the center hole of the top wall.
The invention discloses the following technical effects: according to the invention, samples with different bevels are manufactured through the bevel angle of the sample manufacturing assembly matched with the die, so that the samples are used for simulating uneven deposition between natural gas hydrate reservoirs, the similarity with a real stratum is higher, and the test result is more accurate; the oblique angle of the sample preparation assembly is convenient to replace, the angle of the oblique angle is convenient to adjust, deposition layers with different oblique angles are simulated, and the use is convenient; the test body combined sample preparation assembly can manufacture second test blocks in different forming processes according to actual stratum conditions, the test result is more accurate, more economical and efficient, and theoretical support is provided for safely exploiting natural gas hydrates in sedimentary layers in different angles; the invention can accurately measure the mechanical properties of the hydrates in different sedimentary formations, discuss the occurrence mechanism of geologic disasters such as landslide and sedimentary formation collapse in the process of exploiting the natural gas hydrates, provide theoretical support and research direction for safely and efficiently exploiting the natural gas hydrates and avoiding the occurrence of the geologic disasters, and accelerate the exploitation and utilization of the natural gas hydrates. The invention has simple structure and strong applicability, can conveniently simulate the mechanical properties of the natural gas hydrate deposit layers with different angles, is convenient for test and research, greatly shortens the test process, simplifies the test process, and provides theoretical support for safe and efficient exploitation of the natural gas hydrate deposit layers with different angles.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to these drawings without creating effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a device for testing the physical properties of water of hydration in consideration of the deposition angle according to the present invention;
FIG. 2 is a three-dimensional view of a sample preparation section according to the present invention;
FIG. 3 is a schematic diagram of a sample preparation section according to the present invention;
FIG. 4 is a schematic view of the structure of the test part of the present invention;
FIG. 5 is a schematic view of the structure of the test body of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 4A;
FIG. 7 is an enlarged view of a portion of B in FIG. 5;
FIG. 8 is a schematic view of the internal plenum structure of the present invention;
wherein, 1, frame; 2. a hydraulic cylinder; 3. a reinforcing plate; 4. a pressure head; 5. a sample tube; 6. a bottom wall; 7. a sample; 8. a test body; 9. magnetostrictive displacement sensor; 10. a pressing oil cylinder; 11. an oil cylinder accessory; 12. a main body frame; 13. a confining pressure chamber; 14. a linear slider; 15. an inner peripheral pressure chamber; 16. lifting oil cylinders; 17. a centering block; 18. a built-in load sensor; 19. a support plate; 20. a fluid supply tank; 21. a first pipe; 22. a fluid recovery tank; 23. a second pipe; 24. a first sensor; 25. a second sensor; 26. a third sensor; 27. a data collection module; 28. a data processing module; 29. a test bed; 30. a heat exchanger; 31. a top wall; 701. a first test block; 702. and a second test block.
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.
Referring to fig. 1 to 8, the present invention provides a device for testing mechanical properties of water body in consideration of a deposition angle, comprising a test stand 29, wherein a sample preparation part and a test part are arranged on the test stand 29;
The sample preparation part comprises a frame 1, and the frame 1 is detachably connected with the top surface of the test bed 29; the top surface of the frame 1 is fixedly connected with a sample preparation assembly, the bottom end of the sample preparation assembly is provided with an oblique angle, and the sample preparation assembly is electrically connected with the test part; a die for manufacturing the sample 7 is arranged below the sample manufacturing assembly;
The test part comprises a test main body 8 for installing a sample 7 and a data collection assembly, wherein two ends of the test main body 8 are respectively communicated with a fluid supply assembly and a fluid recovery assembly, and the fluid supply assembly and the fluid recovery assembly are respectively electrically connected with the data collection assembly; the sample preparation assembly is electrically connected with the data collection assembly.
According to the invention, the sample 7 with different bevels is manufactured through the bevel angle matching die of the sample manufacturing assembly, so that the sample 7 is used for simulating uneven deposition between natural gas hydrate reservoirs, the similarity with a real stratum is higher, and the test result is more accurate; the oblique angle of the sample preparation assembly is convenient to replace, the angle of the oblique angle is convenient to adjust, deposition layers with different oblique angles are simulated, and the use is convenient; the test main body 8 of the invention is combined with the sample preparation assembly, so that the second test blocks 702 in different forming processes can be manufactured according to actual stratum conditions, the test result is more accurate, more economical and efficient, and theoretical support is provided for safely exploiting natural gas hydrates in sedimentary layers in different angles; the invention can accurately measure the mechanical properties of the hydrates in different sedimentary formations, discuss the occurrence mechanism of geologic disasters such as landslide and sedimentary formation collapse in the process of exploiting the natural gas hydrates, provide theoretical support and research direction for safely and efficiently exploiting the natural gas hydrates and avoiding the occurrence of the geologic disasters, and accelerate the exploitation and utilization of the natural gas hydrates.
Further optimizing scheme, the sample preparation assembly comprises a hydraulic oil cylinder 2 fixedly connected with the top wall 31 of the frame 1, the output end of the hydraulic oil cylinder 2 is fixedly connected with a pressure head 4, and the bottom end of the pressure head 4 is provided with an oblique angle; the hydraulic cylinder 2 is fixedly connected with a third sensor 26, and the third sensor 26 is electrically connected with the data collecting assembly. The pressure head 4 is fixedly connected with the output end of the hydraulic cylinder 2 through bolts or other modes, different bevel angles can be obtained through changing the pressure head 4, and then the samples 7 with different bevel angles are obtained through pressing; the third sensor 26 is used for measuring the pressing distance of the pressing head 4, and calculating the porosity and the pressure of the sample 7 through the pressing distance under the condition of filling aggregate to a certain extent so as to simulate the consolidation degree of different sedimentary layers.
Further, in order to facilitate the installation of the hydraulic cylinder 2 and reduce the pressure intensity of the hydraulic cylinder 2 to the frame 1, a reinforcing plate 3 is arranged between the hydraulic cylinder 2 and the frame 1, and two ends of the reinforcing plate 3 are fixedly connected with the frame 1 and the base of the hydraulic cylinder 2 through bolts respectively.
Further optimizing scheme, the die comprises a sample tube 5 fixedly connected with the bottom surface of the frame 1, and the inner cavity of the sample tube 5 is matched with the pressure head 4; the bottom end of the inner cavity of the sample tube 5 is fixedly connected with a bottom wall 6, and the bottom wall 6 is detachably connected with the bottom end of the frame 1. When the sample 7 is prepared, the indenter 4 is first removed and inserted into the sample tube 5, then the assembly is inverted, and the aggregate is filled into the sample tube 5 from the position of the bottom wall 6, and the bottom wall 6 is fixedly connected with the frame 1 by bolts or threads.
Furthermore, the sample 7 is formed by pressing aggregate and other substances, and the pressing pressure is different, so that different deposition layer conditions can be simulated; the aggregate is generally prepared from common stratum materials such as quartz sand, kaolin, feng Pu Sha and the like, and can also be prepared from samples of target stratum.
Further optimizing scheme, the test main body 8 comprises a main body frame 12, and the bottom end of the main body frame 12 is fixedly connected with the top surface of the test bed 29; an inner pressure chamber 15 is arranged on the bottom surface of the inner cavity of the main body frame 12, and the inner cavity of the inner pressure chamber 15 is used for installing the sample 7; the outer wall of the inner pressure chamber 15 is wound with a heat exchanger 30; the top end of the inner pressure chamber 15 is provided with a pressure chamber 13 which is arranged corresponding to the inner pressure chamber 15, and the pressure chamber 13 is in sliding connection with the side wall of the main body frame 12; the top surface of the main body frame 12 is fixedly connected with a pressing component which is fixedly connected with the confining pressure chamber 13 and is electrically connected with the data collecting component; the inner pressure chamber 15 communicates with the fluid supply assembly and the fluid recovery assembly; the confining pressure chamber 13 communicates with the fluid supply assembly and the fluid recovery assembly.
Further, a heat exchanger 30 for exchanging heat with the sample 7 in the inner peripheral pressure chamber 15 is fixedly connected to the outer wall of the inner peripheral pressure chamber 15, and adjusts the temperature of the sample 7 in the inner peripheral pressure chamber 15.
Further, the fluid supply assembly comprises a separate test fluid supply device and a temperature adjustment fluid supply device, and the fluid recovery assembly comprises a separate test fluid recovery device and a temperature adjustment fluid recovery device; the two ends of the inner pressure chamber 15 are respectively communicated with a test fluid supply device and a test fluid recovery device, and are used for supplying and recovering test fluid to the inner pressure chamber 15, and the supply and recovery of the test fluid are required to be measured and recorded for later analysis of test rules; the two ends of the confining pressure chamber 13 are respectively communicated with a temperature adjusting fluid supply device and a temperature adjusting fluid recovery device, and are used for supplying and recovering fluid used for adjusting the temperature of the internal confining pressure chamber 15 into the confining pressure chamber 13, so that the inlet amount of the fluid with the adjusted temperature is not required to be measured, and only needs to be matched with the heat exchanger 30 for temperature adjustment, so that the temperature is reduced, the temperature is raised and the temperature is kept constant, and a proper test environment is created.
Further, the pressing assembly comprises a pressing oil cylinder 10 fixed at the top end of the main body frame 12, and the pressing oil cylinder 10 is fixedly connected with the confining pressure chamber 13; the periphery of the pressing oil cylinder 10 is provided with an oil cylinder accessory 11, and the oil cylinder accessory 11 comprises a servo valve and a hydraulic valve block small accumulator; the output end of the pressing cylinder 10 is fixedly connected with the top end of the confining pressure chamber 13 and is used for pushing the confining pressure chamber 13 to move downwards so as to press the sample 7 in the internal confining pressure chamber 15; the top end of the pressing oil cylinder 10 is provided with a magnetostrictive displacement sensor 9, and the magnetostrictive displacement sensor 9 is electrically connected with the data collection module 27.
Further, a lifting cylinder 16 is arranged at the lower end of the main body frame 12 and used for adjusting the position of the whole device and lifting part parts.
Further, the side wall of the main body frame 12 is longitudinally and slidably connected with a plurality of linear sliding blocks 14, and the linear sliding blocks 14 are fixedly connected with the outer wall of the confining pressure chamber 13 to limit the rising or falling of the confining pressure chamber 13.
In a further optimization scheme, the bottom end of the confining pressure chamber 13 is fixedly connected with a aligning block 17, and the aligning block 17 is abutted with the inner confining pressure chamber 15; the aligning block 17 is provided with a built-in load sensor 18, and the built-in load sensor 18 is electrically connected with the data collecting assembly.
In a further optimized scheme, the lower end of the inner peripheral pressure chamber 15 is fixedly connected with the main body frame 12 through a supporting plate 19, and the fluid recovery assembly penetrates through the supporting plate 19 and is communicated with the inner cavity of the inner peripheral pressure chamber 15; the top wall 31 of the inner pressure chamber 15 is in sliding connection with the inner cavity of the inner pressure chamber 15, and the aligning block 17 is abutted with the top wall 31; the fluid supply assembly penetrates through the aligning block 17 and the top wall 31 and then is communicated with the inner cavity of the inner pressure chamber 15; the inner cavity of the inner pressure chamber 15 is used for installing a sample 7, the sample 7 is divided into a first test block 701 and a second test block 702, and the first test block 701 is matched with the second test block 702.
Further, after the first test block 701 and the second test block 702 are combined, a rubber sleeve is sleeved outside, and then the rubber sleeve is put into the inner cavity of the inner pressure chamber 15, so that the first test block 701 and the second test block 702 are prevented from being broken in the test process, and the property of the test block is prevented from being influenced by liquid invasion of the inner pressure chamber.
Further, the test fluid supply device comprises a fluid supply box 20, the fluid supply box 20 is communicated with the test main body 8 through a first pipeline 21, a first sensor 24 is communicated with the first pipeline 21, and the first sensor 24 is electrically connected with the data collecting assembly. The fluid supply tank 20 supplies the low-temperature hydraulic oil for simulating the confining pressure acting on the sample 7 and the sealing hydraulic oil of the inner cavity of the peripheral pressure chamber 13 to the inner peripheral pressure chamber 15 of the test body 8 through the first pipe 21, and supplies the fluid for generating natural gas hydrate such as natural gas and water to the sample 7, simulates the generation process of the natural gas hydrate, and the first sensor 24 measures the fluid flow rate and the fluid pressure in the first pipe 21 and transmits the data to the data collection assembly.
Further, the test fluid recovery device comprises a fluid recovery tank 22, the fluid recovery tank 22 is communicated with the test main body 8 through a second pipeline 23, a second sensor 25 is arranged on the second pipeline 23, and the second sensor 25 is electrically connected with the data collection assembly. The fluid recovery tank 22 recovers the fluid discharged from the support plate 19 in the test body 8 through the second pipe 23, and circulates with the fluid supply tank 20 and the first pipe 21 to simulate the exploitation of natural gas hydrate.
Further, the data collection assembly comprises a data collection module 27 and a data processing module 28, and the data collection module 27 is electrically connected with the data processing module 28; the data collection module 27 is electrically connected with the first sensor 24, the second sensor 25, the third sensor 26, the magnetostrictive displacement sensor 9, the built-in load sensor 18 and other sensors, and collects data obtained by the sensors and transmits the data to the data processing module 28 for data processing, so as to obtain required mechanical rules and characteristics.
A method for testing mechanical properties of a hydrate in consideration of a deposition angle, comprising the following test steps:
S1, preparing a sample 7; selecting a proper oblique angle to press the sample 7, and recording data of the sample 7; sample 7 includes a first block 701 and a second block 702, the first block 701 including two fabrication methods,
The method comprises the following steps: uniformly mixing the dried aggregate with water glass or other water-soluble adhesives, filling a certain amount of aggregate from the bottom of the sample cylinder 5 according to design requirements, mounting the bottom wall 6, and pressing into a specified size by using the pressing head 4;
the second method is as follows:
filling ion distilled water saturated aggregate into the sample cylinder 5 from the bottom wall 6, and pressing into a water saturated test block by using the pressure head 4 at the temperature below 0 ℃;
The second block 702 includes three fabrication methods,
The method comprises the following steps: mixing deionized distilled water with aggregate, filling a certain amount of aggregate from the bottom of the sample barrel 5 according to design requirements, installing the bottom wall 6, and pressing into a specified size by using the pressing head 4. The first test block 701 and the second test block 702 are combined in an up-down mode, then the test block is filled into the inner pressure chamber 15, air in the inner pressure chamber 15 and a pipeline is exhausted, pure methane gas is introduced, the methane gas pressure is set and maintained according to a hydrate phase equilibrium curve, the complete generation of hydrate in a sample is proved when the pressure is not changed any more, deionized distilled water is filled into the inner pressure chamber 15, and the internal gas is exhausted.
The second method is as follows: the ice powder is mixed with the aggregate, then a certain amount of aggregate is filled from the bottom of the sample cylinder 5 according to the design requirement, the bottom wall 6 is arranged, and the ice powder is pressed into a specified size by the pressing head 4. The first test block 701 and the second test block 702 are combined and then are filled into the inner pressure chamber 15, the inner pressure chamber 15 and the air in the pipeline are discharged, the temperature is increased to be higher than 0 ℃, the ice powder is melted, pure methane gas is introduced, the pressure of the methane gas is set and maintained according to a hydrate phase balance curve, the complete generation of the hydrate in the sample is proved when the pressure is not changed any more, deionized distilled water is filled into the inner pressure chamber, and the gas in the cavity is emptied.
And a third method: the hydrate powder is mixed with the aggregate, and then a certain amount of aggregate is filled from the bottom of the sample cylinder 5 according to design requirements, the bottom wall 6 is arranged, and the mixture is pressed into a specified size by the pressing head 4. The first test block 701 and the second test block 702 are combined and then are placed in the inner pressure chamber 15, deionized water is filled into the inner pressure chamber 15, and the gas in the cavity is exhausted.
Wherein the first manufacturing method of the first test block 701 is adapted to the three manufacturing methods of the second test block 702; the second manufacturing method of the first test block 701 is three-phase adaptive to the manufacturing method of the second test block.
S2, mounting a sample 7 to be measured; mounting the sample 7 into the inner cavity of the inner pressure chamber 15, connecting the fluid supply assembly and the fluid recovery assembly, and connecting the fluid supply assembly and the fluid recovery assembly with the data collection assembly; when the test device is installed, the second test block 702 is installed at the lower end of the inner pressure chamber 15, and the plane of the second test block 702 is contacted with the bottom plate of the inner pressure chamber 15; the first test block 701 is arranged above the second test block 702, and the oblique angle of the first test block 701 is the same as the oblique angle of the second test block 702, and the first test block 701 and the second test block 702 are mutually spliced; the first pipeline 21 is communicated with the central hole of the aligning block 17, the central hole of the aligning block 17 is communicated with the central hole of the top wall 31, the first pipeline 21 is communicated with the top end of the inner pressure chamber 15, the second pipeline 23 is communicated with the central hole of the supporting plate 19, the central hole of the supporting plate 19 is communicated with the central hole of the bottom plate of the inner pressure chamber 15, the second pipeline 23 is communicated with the bottom end of the inner cavity of the inner pressure chamber 15, and the fluid in the fluid supply tank 20 and the fluid recovery tank 22 form circulation;
S3, performing a test; performing a test according to a set test target; the temperature and the pressure of the inner cavity of the inner pressure chamber 15 are raised, the temperature is 15-20 ℃, the pressure is 5-10 MPa, and the inner pressure chamber is in a dynamic balance state; the binder in the first block 701 dissolves and the ice in the second block 702 melts, forming voids, at which time the first block 701 becomes loose aggregate and the second block 702 is cemented together by the hydrate bonded aggregate; then deionized distilled water is injected into the inner cavity of the inner pressure chamber 15 through the fluid supply box 20 to reach saturation; the pressures of the first pipeline 21 and the second pipeline 23 at the upper end and the lower end of the inner pressure chamber 15 are gradually changed to form different pressure differences, so that the hydrate of the second test block 702 is decomposed, gas and water generated in the decomposition process enter the fluid recovery box 22 from the second pipeline 23 to be collected and counted, and the pressure of the first pipeline 21 is ensured to be higher than the pressure of the second pipeline 23 in the process, so that the fluid in the inner cavity of the inner pressure chamber 15 flows.
S4, collecting test data, and collecting the test data through a data collection assembly; the flow and pressure of the fluid in the first conduit 21 are measured by the first sensor 24 and the second sensor 25 and the data are transferred to the data processing module 28; the third sensor 26 is used for recording the pressing distance of the pressure head 4 in the manufacturing process of the sample 7, and further calculating the pressure born by the sample 7; the magnetostrictive displacement sensor 9 is used for measuring the moving distance of the pressurizing oil cylinder 10 driving the confining pressure chamber 13, and the built-in load sensor 18 is used for calculating the pressure of the aligning block 17 to the top wall 31 of the confining pressure chamber 15.
S5, processing test data, analyzing and processing the data collected by the data collection assembly, and summarizing rules.
In a further optimized scheme, in the step S1, when a sample 7 is manufactured, aggregate is filled from the position of the bottom wall 6; sample 7 was produced at a temperature of not higher than 0 ℃. Because the bottom surface of the pressure head 4 has an oblique angle, if aggregate is placed in the top end of the sample tube 5, the top surface of the aggregate is inconvenient to adjust, and the inside of the pressed sample 7 is easily pressed unevenly, so that the test result is affected. The pressing head 4 is stretched into the sample tube 5 for a certain distance, the inlet of the sample tube 5 is completely blocked, then the bottom wall 6 is taken down, quantitative aggregate is put in from the bottom wall 6, then the bottom wall 6 is reinstalled, and then pressing is carried out, and as the top surface of the bottom wall 6 is a plane, only the exposed surface of the aggregate is required to be smoothed, and the pressed sample 7 is uniformly stressed.
The test method comprises the following steps:
manufacturing a first test block 701:
The method ① is to uniformly mix the dried aggregate with water glass or other water-soluble adhesives, then fill a certain amount of aggregate from the bottom of the sample tube 5 according to design requirements, install the bottom wall 6, and press the aggregate into a specified size by using the pressing head 4;
The method ② is to fill ion distilled water saturated aggregate into the sample cylinder 5 from the bottom wall 6, and to press the ion distilled water saturated aggregate into a water saturated test block by a pressure head 4 under the temperature of 0 ℃;
A second test block 702 is made:
In the method ①, deionized distilled water is mixed with aggregate, then a certain amount of aggregate is filled from the bottom of the sample cylinder 5 according to design requirements, the bottom wall 6 is arranged, and the mixture is pressed into a specified size by the pressing head 4. The first test block 701 and the second test block 702 are combined in an up-down mode, then the combined test block is filled into the inner pressure chamber 15, air in the inner pressure chamber 15 and a pipeline is exhausted, pure methane gas is introduced, the methane gas pressure is set and maintained according to a hydrate phase equilibrium curve, the complete generation of hydrate in a sample is proved when the pressure is no longer changed, deionized distilled water is filled into the inner pressure chamber 15, and the internal gas is exhausted.
The method ② mixes the ice powder with the aggregate, fills a certain amount of aggregate from the bottom of the sample cylinder 5 according to the design requirement, installs the bottom wall 6, and presses the ice powder to the specified size by the pressing head 4. The first test block 701 and the second test block 702 are combined and then are filled into the inner pressure chamber 15, the inner pressure chamber 15 and the air in the pipeline are discharged, the temperature is increased to be higher than 0 ℃, the ice powder is melted, pure methane gas is introduced, the pressure of the methane gas is set and maintained according to a hydrate phase balance curve, the complete generation of the hydrate in the sample is proved when the pressure is not changed any more, deionized distilled water is filled into the inner pressure chamber, and the gas in the cavity is emptied.
The method ③ mixes the hydrate powder with the aggregate, fills a certain amount of aggregate from the bottom of the sample cylinder 5 according to the design requirement, installs the bottom wall 6, and presses the powder to a specified size by the pressing head 4. The first test block 701 and the second test block 702 are combined and then are placed in the inner pressure chamber 15, deionized water is filled into the inner pressure chamber 15, and the gas in the cavity is exhausted.
The first test block 701 and the second test block 702 are appropriately manufactured according to the test conditions and the test requirements, and then are matched.
Mounting a sample 7 to be measured:
Mounting the sample 7 into the inner cavity of the inner pressure chamber 15, connecting the fluid supply assembly and the fluid recovery assembly, and connecting the fluid supply assembly and the fluid recovery assembly with the data collection assembly; when the test device is installed, the second test block 702 is installed at the lower end of the inner pressure chamber 15, and the plane of the second test block 702 is contacted with the bottom plate of the inner pressure chamber 15; the first test block 701 is arranged above the second test block 702, and the oblique angle of the first test block 701 is the same as the oblique angle of the second test block 702, and the first test block 701 and the second test block 702 are mutually spliced; the first pipe 21 is communicated with the central hole of the aligning block 17, the central hole of the aligning block 17 is communicated with the central hole of the top wall 31, the first pipe 21 is communicated with the top end of the inner pressure chamber 15, the second pipe 23 is communicated with the central hole of the supporting plate 19, the central hole of the supporting plate 19 is communicated with the central hole of the bottom plate of the inner pressure chamber 15, the second pipe 23 is communicated with the bottom end of the inner cavity of the inner pressure chamber 15, and the fluid in the fluid supply tank 20 and the fluid recovery tank 22 is circulated.
The test was performed:
Performing a test according to a set test target; the temperature and the pressure of the inner cavity of the inner pressure chamber 15 are raised, the temperature is 15-20 ℃, the pressure is 5-10 MPa, and the inner pressure chamber is in a dynamic balance state; the ice in the first block 701 and the second block 702 melts to form a void, and at this time, the first block 701 becomes loose aggregate, and the second block 702 is not broken due to the binding by the hydrate; then deionized distilled water is injected into the inner cavity of the inner pressure chamber 15 through the fluid supply box 20 to reach saturation; the pressures of the first pipeline 21 and the second pipeline 23 at the upper end and the lower end of the inner pressure chamber 15 are gradually changed to form different pressure differences, so that the hydrate of the second test block 702 is decomposed, gas and water generated in the decomposition process enter the fluid recovery box 22 from the second pipeline 23 for collection and statistics, and the pressure of the first pipeline 21 is always higher than the pressure of the second pipeline 23 in the process, so that the fluid in the inner cavity of the inner pressure chamber 15 flows.
Collecting and processing test data:
Collecting test data through a data collection component; the flow and pressure of the fluid in the first conduit 21 are measured by the first sensor 24 and the second sensor 25 and the data are transferred to the data processing module 28; the third sensor 26 is used for recording the pressing distance of the pressure head 4 in the manufacturing process of the sample 7, and further calculating the pressure born by the sample 7; the magnetostrictive displacement sensor 9 is used for measuring the moving distance of the pressurizing oil cylinder 10 driving the confining pressure chamber 13, and the built-in load sensor 18 is used for calculating the pressure of the aligning block 17 to the top wall 31 of the confining pressure chamber 15; the collected data are subjected to classification processing to obtain the required mechanical properties of the natural gas hydrate sample 7 taking into account the reservoir deposit angle.
The invention has simple structure and strong applicability, can conveniently simulate the mechanical properties of the natural gas hydrate deposit layers with different angles, is convenient for test and research, greatly shortens the test process, simplifies the test process, and provides theoretical support for safe and efficient exploitation of the natural gas hydrate deposit layers with different angles.
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 (2)

1. The method for testing the mechanical properties of the hydrate by considering the deposition angle is characterized by comprising the following testing steps of:
s1, preparing a sample (7); selecting a suitable bevel angle to press the sample (7), and recording data of the sample (7);
S2, mounting a sample (7) to be measured; installing a sample (7) into the inner cavity of the inner pressure chamber (15), connecting the fluid supply assembly and the fluid recovery assembly, and connecting the fluid supply assembly and the fluid recovery assembly with the data collection assembly;
s3, performing a test; performing a test according to a set test target;
s4, collecting test data, and collecting the test data through a data collection assembly;
S5, processing test data, analyzing and processing the data collected by the data collection assembly, and summarizing rules;
The test device used for the hydrate mechanical property test method considering the deposition angle comprises a test stand (29), wherein a sample preparation part and a test part are arranged on the test stand (29);
The sample preparation part comprises a frame (1), and the frame (1) is detachably connected with the top surface of the test bench (29); the top surface of the frame (1) is fixedly connected with a sample preparation assembly, the bottom end of the sample preparation assembly is provided with an oblique angle, and the sample preparation assembly is electrically connected with the test part; a die for manufacturing the sample (7) is arranged below the sample preparation assembly;
the test part comprises a test main body (8) for mounting the test sample (7) and a data collection assembly, wherein two ends of the test main body (8) are respectively communicated with a fluid supply assembly and a fluid recovery assembly, and the fluid supply assembly and the fluid recovery assembly are respectively electrically connected with the data collection assembly; the sample preparation component is electrically connected with the data collection component;
The test main body (8) comprises a main body frame (12), and the bottom end of the main body frame (12) is fixedly connected with the top surface of the test bed (29); an inner pressure chamber (15) is arranged on the bottom surface of the inner cavity of the main body frame (12), and the inner cavity of the inner pressure chamber (15) is used for installing the sample (7); the outer wall of the inner pressure chamber (15) is wound with a heat exchanger (30); the outside of the inner confining pressure chamber (15) is provided with a confining pressure chamber (13) coaxially arranged with the inner confining pressure chamber (15), and the confining pressure chamber (13) is in sliding connection with the side wall of the main body frame (12); the top surface of the main body frame (12) is fixedly connected with a pressing assembly, the pressing assembly is fixedly connected with the confining pressure chamber (13), and the pressing assembly is electrically connected with the data collecting assembly; the inner confining pressure chamber (15) and the confining pressure chamber (13) are respectively communicated with the fluid recovery assembly and the fluid supply assembly;
The bottom end of the confining pressure chamber (13) is fixedly connected with a aligning block (17), and the aligning block (17) is abutted with the inner confining pressure chamber (15); the self-aligning block (17) is provided with a built-in load sensor (18), and the built-in load sensor (18) is electrically connected with the data collection assembly;
The lower end of the inner pressure chamber (15) is fixedly connected with the main body frame (12) through a supporting plate (19), and the fluid recovery assembly penetrates through the supporting plate (19) and then is communicated with the inner cavity of the inner pressure chamber (15); the top wall (31) of the inner peripheral pressure chamber (15) is in sliding connection with the inner cavity of the inner peripheral pressure chamber (15), and the aligning block (17) is abutted with the top wall (31); the fluid supply assembly penetrates through the aligning block (17) and the top wall (31) and then is communicated with the inner cavity of the inner pressure chamber (15); the inner cavity of the inner pressure chamber (15) is used for installing the sample (7), the sample (7) is divided into a first test block (701) and a second test block (702), and the first test block (701) is matched with the second test block (702);
The sample preparation assembly comprises a hydraulic oil cylinder (2) fixedly connected with the top end of the frame (1), a pressure head (4) is fixedly connected with the output end of the hydraulic oil cylinder (2), and the bevel angle is formed in the bottom end of the pressure head (4); a third sensor (26) is fixedly connected to the hydraulic oil cylinder (2), and the third sensor (26) is electrically connected with the data collection assembly;
The die comprises a sample tube (5) fixedly connected with the bottom surface of the frame (1), and the inner cavity of the sample tube (5) is matched with the pressure head (4); a bottom wall (6) is fixedly connected to the bottom end of the inner cavity of the sample tube (5), and the bottom wall (6) is detachably connected with the bottom end of the frame (1);
in step S1, the first test block (701) includes two manufacturing methods, and the second test block (702) includes three manufacturing methods;
the first test block (701) comprises two manufacturing methods:
The method comprises the following steps: uniformly mixing the dried aggregate with a water-soluble adhesive, filling the mixed aggregate from the bottom of a sample cylinder (5) according to design requirements, mounting a bottom wall (6), and pressing by using a pressing head (4);
the second method is as follows:
Filling ion distilled water saturated aggregate into the sample cylinder (5) from the bottom wall (6), and pressing into a water saturated test block by using a pressing head (4) at the temperature below 0 ℃;
The second block (702) includes three fabrication methods,
The method comprises the following steps: mixing deionized distilled water with aggregate, filling the aggregate from the bottom of a sample cylinder (5), mounting a bottom wall (6), and pressing by a pressing head (4); the first test block (701) and the second test block (702) are assembled in an up-down mode and then are filled into an inner pressure chamber (15), air in the inner pressure chamber (15) is exhausted, pure methane gas is introduced, the pressure of the methane gas is set and maintained according to a hydrate phase balance curve, the complete generation of hydrate in a sample is proved when the pressure is no longer changed, deionized distilled water is filled into the inner pressure chamber (15), and the inner gas is exhausted;
The second method is as follows: mixing ice powder with aggregate, filling the aggregate from the bottom of a sample cylinder (5) according to design requirements, mounting a bottom wall (6), and pressing into a specified size by using a pressing head (4); the first test block (701) and the second test block (702) are assembled and then are filled into an inner pressure chamber (15), air in the inner pressure chamber (15) and a pipeline is discharged, the temperature is increased to be higher than 0 ℃, ice powder is melted, pure methane gas is introduced, the pressure of the methane gas is set and maintained according to a hydrate phase equilibrium curve, the hydrate in a sample is proved to be completely generated when the pressure is no longer changed, deionized distilled water is filled into the inner pressure chamber, and the gas in the cavity is exhausted;
and a third method: mixing hydrate powder with aggregate, filling a certain amount of aggregate from the bottom of a sample cylinder (5) according to design requirements, mounting a bottom wall (6), and pressing by using a pressing head (4); the first test block (701) and the second test block (702) are combined and then are filled into an inner pressure chamber (15), deionized water is filled into the inner pressure chamber (15), and gas in the cavity is exhausted;
In step S1, when the sample (7) is manufactured, aggregate is filled from the position of the bottom wall (6); the manufacturing temperature of the sample (7) is not higher than 0 ℃; firstly, taking down the pressure head (4) and inserting the pressure head into the sample tube (5) to form a combination, then inverting the combination, filling aggregate into the sample tube (5) from the position of the bottom wall (6), reloading the bottom wall (6) after filling, and fixedly connecting the bottom wall (6) with the frame (1);
In the step S3, the temperature and the pressure of the inner cavity of the inner pressure chamber (15) are raised, the temperature is 15-20 ℃, the pressure is 5-10 MPa, and the inner pressure is in a dynamic balance state; the binder in the first test block (701) dissolves and the ice in the second test block (702) melts to form a void, at which time the first test block (701) becomes loose aggregate and the second test block (702) is cemented together by the hydrate bonded aggregate; then deionized distilled water is injected into the inner cavity of the inner pressure chamber (15) through the fluid supply box (20) to reach saturation; the pressures of the first pipeline (21) and the second pipeline (23) at the upper end and the lower end of the inner periphery pressure chamber (15) are gradually changed to form different pressure differences, so that the hydrate of the second sample (7) is decomposed, gas and water generated in the decomposition process enter the fluid recovery box (22) through the second pipeline (23) to be collected and counted, and the pressure of the first pipeline (21) is ensured to be higher than the pressure of the second pipeline (23) in the process, so that the fluid in the inner cavity of the inner periphery pressure chamber (15) flows.
2. The method for testing mechanical properties of a hydrate taking into account the deposition angle according to claim 1, wherein: in step S2, the center hole of the aligning block (17) is opposite to the center hole of the top wall (31).
CN202111269922.9A 2021-10-29 2021-10-29 Device and method for testing physical properties of water body by considering deposition angle Active CN114002073B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111269922.9A CN114002073B (en) 2021-10-29 2021-10-29 Device and method for testing physical properties of water body by considering deposition angle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111269922.9A CN114002073B (en) 2021-10-29 2021-10-29 Device and method for testing physical properties of water body by considering deposition angle

Publications (2)

Publication Number Publication Date
CN114002073A CN114002073A (en) 2022-02-01
CN114002073B true CN114002073B (en) 2024-05-17

Family

ID=79925039

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111269922.9A Active CN114002073B (en) 2021-10-29 2021-10-29 Device and method for testing physical properties of water body by considering deposition angle

Country Status (1)

Country Link
CN (1) CN114002073B (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996425A (en) * 1997-05-28 1999-12-07 Welker Engineering Company Vanishing head sample cylinder
CN202166560U (en) * 2011-06-30 2012-03-14 中国科学院武汉岩土力学研究所 Three-shaft testing device for natural gas hydrate containing sediment
CN104807685A (en) * 2015-05-19 2015-07-29 中国矿业大学 Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics
CN109187215A (en) * 2018-09-30 2019-01-11 中国矿业大学 A kind of sea area hydrate in-situ preparation and triaxial tests pressure chamber and its application method
CN110057639A (en) * 2019-04-29 2019-07-26 河海大学 A kind of sampling die and its method for making sample for simulating the rock mass of inter-laminar dislocation band containing multilayer
WO2020119394A1 (en) * 2018-12-11 2020-06-18 大连理工大学 Ct triaxial test device for hydrate sediments
CN111624070A (en) * 2020-06-08 2020-09-04 上海交通大学 Test sample and method for measuring external friction angle of saturated soil and structure by utilizing triaxial apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8623107B2 (en) * 2009-02-17 2014-01-07 Mcalister Technologies, Llc Gas hydrate conversion system for harvesting hydrocarbon hydrate deposits

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5996425A (en) * 1997-05-28 1999-12-07 Welker Engineering Company Vanishing head sample cylinder
CN202166560U (en) * 2011-06-30 2012-03-14 中国科学院武汉岩土力学研究所 Three-shaft testing device for natural gas hydrate containing sediment
CN104807685A (en) * 2015-05-19 2015-07-29 中国矿业大学 Joint test specimen method using 3D (three-dimensional) printing for making structure surface containing specific geometrical characteristics
CN109187215A (en) * 2018-09-30 2019-01-11 中国矿业大学 A kind of sea area hydrate in-situ preparation and triaxial tests pressure chamber and its application method
WO2020119394A1 (en) * 2018-12-11 2020-06-18 大连理工大学 Ct triaxial test device for hydrate sediments
CN110057639A (en) * 2019-04-29 2019-07-26 河海大学 A kind of sampling die and its method for making sample for simulating the rock mass of inter-laminar dislocation band containing multilayer
CN111624070A (en) * 2020-06-08 2020-09-04 上海交通大学 Test sample and method for measuring external friction angle of saturated soil and structure by utilizing triaxial apparatus

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Discrete element numerical simulation of mechanical properties of methane hydrate-bearing specimen considering deposit angles;Bin Gong等;Journal of Natural Gas Science and Engineering;20200128;第76卷;第1-17页 *
多功能水合物沉积物三轴试验***的研制与应用;周家作等;岩土力学;20200131;第41卷(第1期);第342-352页 *
天然气水合物快速加热分解导致地层破坏的实验;张旭辉等;海洋地质与第四纪地质;20110228;第31卷(第1期);第157-164页 *
张旭辉等.天然气水合物快速加热分解导致地层破坏的实验.海洋地质与第四纪地质.2011,第31卷(第1期),第157-164页. *

Also Published As

Publication number Publication date
CN114002073A (en) 2022-02-01

Similar Documents

Publication Publication Date Title
CN107894383B (en) Device and method for measuring permeability of sediment containing hydrate under triaxial stress condition
CN109519156B (en) Seepage experiment method for side water sandstone gas reservoir water drive profile model
CN102735548B (en) Multifunctional true triaxial flow solid coupling test system
CN102735547B (en) Coal-rock hydraulic fracturing testing method under true triaxial state
CN103868799B (en) Rock mechanical characteristic analyzer for non-conventional oil-gas reservoir stratum
CN109356553B (en) Coal bed gas horizontal well hole collapse cave building and pressure relief mining simulation test system
CN100594369C (en) Method and device for evaluating physical parameters of an underground reservoir from rock cuttings taken therefrom
CN102735600B (en) Method for testing coal sample seepage under true triaxial state
CN106383221B (en) A kind of reservoir stress sensitive experiment test method and device
CN102735549B (en) Multifunctional true triaxial flow solid coupling pressure chamber
CN201747363U (en) Coal bed gas well completion mode evaluating experimental apparatus
CN108316916B (en) Discharge and production pressure drop control simulation test method under different coal reservoir conditions
CN104563982A (en) High-temperature high-pressure dry gas injection longitudinal wave and efficiency testing device and method for gas condensate reservoir
CN109827848A (en) A kind of oil and gas reservoir pressure-break extended simulation dynamic monitoring system and method
CN109633754B (en) Simulation method of natural gas hydrate development simulation experiment device
CN107587863A (en) NGH containing the natural gas reservoir that underlies hides synthesis and exploitation three-dimensional experimental device system
CN110219625A (en) Flood pot test system based on 3D printing three-dimensional fracture-pore reservoir model
WO2022161137A1 (en) System for measuring dynamic physical properties of rock
CN109946215A (en) A kind of original position coal body gas absorption amount test simulator
CN203929583U (en) The proving installation of a kind of gas bearing shale factor of porosity and absorption parameter
CN107560972A (en) Coal adsorption-desorption Experiment of Methane device and method under ul-trasonic irradiation
CN109725357B (en) One-dimensional simulation device of natural gas hydrate development simulation experiment device
CN105842073A (en) In-situ solidification and shear experimental system of hydrate bearing sediments
CN114002073B (en) Device and method for testing physical properties of water body by considering deposition angle
CN204436354U (en) HTHP gas condensate reservoir note dry gas longitudinally involves efficiency test device

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