CN114893177B - Water injection fracturing shear test system for simulating geothermal system dry-hot rock - Google Patents
Water injection fracturing shear test system for simulating geothermal system dry-hot rock Download PDFInfo
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- CN114893177B CN114893177B CN202210703299.1A CN202210703299A CN114893177B CN 114893177 B CN114893177 B CN 114893177B CN 202210703299 A CN202210703299 A CN 202210703299A CN 114893177 B CN114893177 B CN 114893177B
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- 238000012360 testing method Methods 0.000 title claims abstract description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 238000002347 injection Methods 0.000 title claims abstract description 57
- 239000007924 injection Substances 0.000 title claims abstract description 57
- 239000011435 rock Substances 0.000 title claims abstract description 28
- 238000004088 simulation Methods 0.000 claims abstract description 73
- 238000010438 heat treatment Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004321 preservation Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000005338 heat storage Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000005284 excitation Effects 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000011161 development Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000002591 computed tomography Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000013028 emission testing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007660 shear property test Methods 0.000 description 1
- 230000000153 supplemental effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a water injection fracturing shear test system for simulating dry-hot rock of a geothermal system, which comprises the following components: the outer shell is fixedly connected with a first pressurizing assembly and a second pressurizing assembly, an upper auxiliary pressurizing assembly and a lower auxiliary pressurizing assembly are arranged in the outer shell, the first pressurizing assembly penetrates into the outer shell to be abutted with the upper auxiliary pressurizing assembly, the second pressurizing assembly penetrates into the outer shell to be abutted with the lower auxiliary pressurizing assembly, a simulation test piece is arranged in the outer shell and positioned in the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, a simulation water injection well is formed in the top surface of the simulation test piece, the simulation water injection well is communicated with a high-pressure water injection pipe, and the top end of the simulation test piece is abutted with the upper pressurizing assembly; according to the invention, the stress condition of the dry hot rock under the real condition is simulated, so that the test is closer to the excitation process of the dry hot rock reservoir under the real condition, the test result is more accurate, and the parameters and the scheme optimization are provided for the design and the construction of the artificial heat storage layer.
Description
Technical Field
The invention relates to the technical field of hot dry rock water injection fracturing shear test, in particular to a water injection fracturing shear test system for simulating hot dry rock of a geothermal system.
Background
Geothermal resources are novel clean and renewable energy sources, and the development and utilization attention of the geothermal resources is gradually increased worldwide. A large amount of geothermal energy is stored in deep dry hot rock of stratum, the dry hot rock is anhydrous or high Wen Yanti (150-650 ℃) with low water content, few pores or cracks exist, the permeability is extremely low, the geothermal energy is mainly composed of metamorphic rock and crystalline rock mass, a water flow channel is formed by means of reservoir transformation technologies such as hydraulic fracturing, a mining and injection well pattern is formed, and the heat exchange area is increased to realize geothermal resource development.
The drilling and drying heat energy source taking engineering consumes longer time and has higher cost and risk. Therefore, before the artificial heat storage layer is built and demonstrated, an indoor hot dry rock water injection fracturing shear test is developed, and the method becomes a necessary means for geothermal development at the present stage.
The patent with publication number of CN110242267A discloses a water injection fracturing shear test system and a water injection fracturing shear test method for simulating hot dry rock of a geothermal system, wherein only one side of a part of a simulated test piece can be loaded with shear stress, and the pressure born by the hot dry rock positioned in the deep underground is from all directions, so that the environment where the hot dry rock is positioned cannot be well simulated, and the deviation of test results is possibly caused.
Disclosure of Invention
The invention aims to provide a water injection fracturing shear test system for simulating dry-hot rock of a geothermal system, so as to solve the problems of the prior art.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a water injection fracturing shear test system for simulating dry-hot rock of a geothermal system, which comprises the following components: the device comprises an outer shell, wherein a first pressurizing assembly and a second pressurizing assembly are fixedly connected to the outer side wall of the outer shell, an upper auxiliary pressurizing assembly and a lower auxiliary pressurizing assembly are arranged in the outer shell, the first pressurizing assembly penetrates into the outer shell to be abutted against the upper auxiliary pressurizing assembly, the second pressurizing assembly penetrates into the outer shell to be abutted against the lower auxiliary pressurizing assembly, a simulation test piece is arranged in the outer shell and is positioned in the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, a simulation water injection well is formed in the top surface of the simulation test piece, a high-pressure water injection pipe is communicated with the simulation water injection well, and an upper pressurizing assembly is abutted against the top end of the simulation test piece;
the upper auxiliary pressurizing assembly comprises a plurality of first supporting pieces, the first supporting pieces are circumferentially arranged at the outer side of the simulation test piece at equal intervals, and the first supporting pieces are abutted with the outer side wall of the simulation test piece;
the lower auxiliary pressurizing assembly comprises a plurality of second supporting pieces, the second supporting pieces are circumferentially arranged on the outer side of the simulation test piece at equal intervals, and the second supporting pieces are abutted to the outer side wall of the simulation test piece.
Preferably, the first pressurizing assembly comprises a plurality of first pressurizing pieces, the plurality of first pressurizing pieces are circumferentially arranged on the outer side wall of the outer shell at equal intervals, the first pressurizing pieces are arranged in one-to-one correspondence with the first supporting pieces, and the pressurizing ends of the first pressurizing pieces extend into the outer shell and are abutted with the outer side wall of the first supporting pieces;
the one end that is close to of first pressurization spare is equipped with two engaging lugs, two the engaging lug symmetry sets up and the rigid coupling is in on the lateral wall of first pressurization spare, the engaging lug passes through screw fixed mounting on the lateral wall of shell body.
Preferably, the second pressurizing assembly comprises a plurality of second pressurizing pieces, the second pressurizing pieces are circumferentially arranged on the outer side wall of the outer shell at equal intervals, the second pressurizing pieces are arranged in one-to-one correspondence with the second supporting pieces, and the pressurizing ends of the second pressurizing pieces extend into the outer shell and are abutted to the outer side wall of the second supporting pieces.
Preferably, the first supporting plate is arranged in an arc shape, a plurality of first supporting plates are surrounded to be circular, a plurality of first auxiliary rods are fixedly connected to one side of the first supporting plate, a plurality of first auxiliary rods are arranged in an interval sequence, a first auxiliary groove is formed between every two adjacent first auxiliary rods, a plurality of second auxiliary rods are fixedly connected to the other side of the first supporting plate, a plurality of second auxiliary rods are arranged in an interval sequence, a second auxiliary groove is formed between every two adjacent second auxiliary rods, the first auxiliary rods are inserted into the second auxiliary grooves, gaps are reserved between the end parts of the first auxiliary rods and the side walls of the second auxiliary grooves, the second auxiliary rods are inserted into the first auxiliary grooves, gaps are reserved between the end parts of the second auxiliary rods and the side walls of the first auxiliary grooves, through grooves are formed in the first auxiliary rods and the second auxiliary rods, through grooves in the first auxiliary rods and the second auxiliary rods are correspondingly arranged up and down, and the through grooves are provided with through nails with small diameters, and the through nails are arranged in the through grooves and have small diameters.
Preferably, the second supporting plate is arranged in an arc shape, a plurality of second supporting plates are surrounded into a circle, a plurality of third auxiliary rods are fixedly connected to one side of each second supporting plate, a plurality of third auxiliary rods are arranged in an interval sequence, a third auxiliary groove is formed between every two adjacent third auxiliary rods, a plurality of fourth auxiliary rods are fixedly connected to the other side of each second supporting plate, a fourth auxiliary groove is formed between every two adjacent fourth auxiliary rods in an interval sequence, each third auxiliary rod is inserted into each fourth auxiliary groove, a gap is reserved between the end part of each third auxiliary rod and the side wall in each fourth auxiliary groove, each fourth auxiliary rod is inserted into each third auxiliary groove, a gap is reserved between the end part of each fourth auxiliary rod and the side wall of each third auxiliary groove, a sliding block is fixedly connected to the bottom end of each second supporting plate, the sliding block is located at the middle position of each second supporting plate, the axis of the sliding block is located on the diameter of each second supporting plate, the sliding block is connected to the sliding groove in a sliding groove, a circumferential direction is formed in the sliding groove, a circular bottom plate is arranged on the top surface of the bottom plate, and the circular bottom plate is abutted to the circular bottom plate in a certain position, and the circular bottom plate is arranged on the top surface of the circular bottom plate in a round bottom plate in a sliding groove.
Preferably, the bottom wall of the outer shell is fixedly connected with a placing base, a cavity is formed in the placing base, a telescopic rod is fixedly connected to the bottom wall of the cavity, the telescopic end of the telescopic rod penetrates into the outer shell and is fixedly connected with a supporting plate, and the supporting plate is in butt joint with the bottom surface of the circular bottom plate.
Preferably, the upper pressurizing assembly comprises an upper pressurizing column, the upper pressurizing column is located at the top end of the simulation test piece, and a pressurizing plate is arranged between the upper pressurizing columns.
Preferably, a first pipe inserting hole is formed in the side wall of the pressurizing plate, a second pipe inserting hole is formed in the bottom surface of the pressurizing plate, the first pipe inserting hole is communicated with the second pipe inserting hole, a high-pressure water injection pipe is arranged in the first pipe inserting hole in a penetrating mode, a telescopic pipe is arranged in the second pipe inserting hole in a penetrating mode, the telescopic pipe is communicated with the high-pressure water injection pipe, one end, far away from the high-pressure water injection pipe, of the telescopic pipe penetrates into the simulated water injection well, and a sealing piece is arranged between the telescopic pipe and the simulated water injection well.
Preferably, a heating cavity is formed in the first supporting piece, a heating layer and a heat preservation layer are arranged in the heating cavity, and the heating layer is close to the simulation test piece.
The invention discloses the following technical effects:
according to the invention, the simulation test piece is placed in the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, then the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly are placed in the outer shell, the first pressurizing assembly and the second pressurizing assembly respectively apply pressure to the first supporting pieces and the second supporting pieces, so that the simulation test piece bears circumferential pressure, meanwhile, the upper pressurizing assembly provides vertical pressure for the simulation test piece, the environment where the hot dry rock is located can be better simulated, meanwhile, the first pressurizing assembly and the second pressurizing assembly apply different pressures to the simulation test piece to simulate shearing forces applied when the simulation test piece is located at different ground depths, a simulation water injection well is formed in the simulation test piece, normal-temperature water is introduced into the simulation water injection well through a high-pressure water injection pipe, and the injection fracturing engineering of the normal-temperature water in the site is simulated.
According to the invention, the stress condition of the dry hot rock under the real condition is simulated, so that the test is more similar to the excitation process of the dry hot rock reservoir under the real condition, and parameters and scheme optimization are provided for the design and construction of the artificial heat storage layer.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a top view of the upper supplemental pressurization assembly;
FIG. 4 is a schematic view of the connection between the first support plates;
FIG. 5 is a top view of the lower auxiliary pressurizing assembly;
FIG. 6 is a schematic illustration of the connection between the second support sheets;
FIG. 7 is a top view of a circular base plate;
FIG. 8 is a cross-sectional view A-A of FIG. 7;
wherein, 1, the outer shell; 2. simulating a test piece; 3. simulating a water injection well; 4. a high pressure water injection pipe; 5. a first support sheet; 6. a second support sheet; 7. a first pressing member; 8. a connecting lug; 9. a screw; 10. a second pressing member; 11. a first auxiliary lever; 12. a second auxiliary lever; 13. a through groove; 14. a limit nail; 15. a third auxiliary lever; 16. a fourth auxiliary lever; 17. a slide block; 18. a chute; 19. a circular bottom plate; 20. placing a base; 21. a cavity; 22. a telescopic rod; 23. a supporting plate; 24. pressurizing the column; 25. a pressurizing plate; 26. a telescopic tube; 27. a seal; 28. a heating layer; 29. and a heat preservation layer.
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. 1-8, the present invention provides a water injection fracturing shear test system for simulating geothermal system dry hot rock, comprising: the device comprises an outer shell 1, wherein a first pressurizing assembly and a second pressurizing assembly are fixedly connected to the outer side wall of the outer shell 1, an upper auxiliary pressurizing assembly and a lower auxiliary pressurizing assembly are arranged in the outer shell 1, the first pressurizing assembly penetrates into the outer shell 1 to be abutted against the upper auxiliary pressurizing assembly, the second pressurizing assembly penetrates into the outer shell 1 to be abutted against the lower auxiliary pressurizing assembly, a simulation test piece 2 is arranged in the outer shell 1, the simulation test piece 2 is positioned in the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, a simulation water injection well 3 is formed in the top surface of the simulation test piece 2, a high-pressure water injection pipe 4 is communicated with the simulation water injection well 3, and the top end of the simulation test piece 2 is abutted against the upper pressurizing assembly;
the upper auxiliary pressurizing assembly comprises a plurality of first supporting pieces 5, the plurality of first supporting pieces 5 are circumferentially arranged at equal intervals on the outer side of the simulation test piece 2, and the first supporting pieces 5 are abutted with the outer side wall of the simulation test piece 2;
the lower auxiliary pressurizing assembly comprises a plurality of second supporting pieces 6, the second supporting pieces 6 are circumferentially arranged on the outer side of the simulation test piece 2 at equal intervals, and the second supporting pieces 6 are abutted with the outer side wall of the simulation test piece 2.
According to the invention, the simulation test piece 2 is placed in the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, then the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly are placed in the outer shell 1, the first pressurizing assembly and the second pressurizing assembly respectively apply pressure to the first supporting plates 5 and the second supporting plates 6, so that the simulation test piece 2 bears circumferential pressure, meanwhile, the upper pressurizing assembly provides vertical pressure for the simulation test piece 2, the environment where the dry hot rock is located can be better simulated, meanwhile, the first pressurizing assembly and the second pressurizing assembly apply different pressures for the simulation test piece 2 to simulate shearing forces applied when the simulation test piece 2 is located at different ground depths, the simulation test piece is provided with the simulation water injection well 3, normal-temperature water is introduced into the simulation water injection well 3 through the high-pressure water injection pipe 4, and the injection fracturing engineering of the normal-temperature water in the site is simulated.
In a further optimized scheme, the first pressurizing assembly comprises a plurality of first pressurizing pieces 7, the plurality of first pressurizing pieces 7 are circumferentially arranged on the outer side wall of the outer shell 1 at equal intervals, the first pressurizing pieces 7 are arranged in one-to-one correspondence with the first supporting pieces 5, and the pressurizing ends of the first pressurizing pieces 7 extend into the outer shell 1 and are abutted with the outer side wall of the first supporting pieces 5;
the one end that is close to shell body 1 of first pressure piece 7 is equipped with two engaging lugs 8, and two engaging lugs 8 symmetry set up and the rigid coupling is on the lateral wall of first pressure piece 7, and engaging lug 8 passes through screw 9 fixed mounting on the lateral wall of shell body 1.
Further optimizing scheme, the second pressurization subassembly includes a plurality of second pressure pieces 10, and a plurality of second pressure pieces 10 circumference equidistant setting is on the lateral wall of shell body 1, and second pressure pieces 10 and second backing sheet 6 one-to-one set up, and the pressurization end of second pressure pieces 10 stretches into in the shell body 1 and with the lateral wall butt of second backing sheet 6. The second pressure element 10 and the outer housing 1 are connected in the same way as the first pressure element 7 and the outer housing 1, the second pressure element 10 and the first pressure element 7 preferably being hydraulic cylinders.
Further optimizing scheme, first supporting plate 5 sets up to the arc, a plurality of first supporting plates 5 enclose into circularly, a plurality of first auxiliary rod 11 are fixed in first supporting plate 5 one side rigid coupling, a plurality of first auxiliary rod 11 interval sequence is arranged, form first auxiliary tank between two adjacent first auxiliary rod 11, the opposite side rigid coupling of first supporting plate 5 has a plurality of second auxiliary rod 12, a plurality of second auxiliary rod 12 interval sequence is arranged, form the second auxiliary tank between two adjacent second auxiliary rod 12, first auxiliary rod 11 inserts in the second auxiliary tank, leave the clearance between the tip of first auxiliary rod 11 and the lateral wall of second auxiliary tank, in the second auxiliary rod 12 inserts first auxiliary tank, leave the clearance between the tip of second auxiliary rod 12 and the lateral wall of first auxiliary tank, through groove 13 has all been seted up on first auxiliary rod 11 and the second auxiliary rod 12, through groove 13 upper and lower correspondence setting on first auxiliary rod 11 and the second auxiliary rod 12, wear to be equipped with spacing nail 14 in through groove 13, the diameter of spacing nail 14 is less than the width of through groove 13.
The quantity of first backing sheet 5 is four preferably, and four first backing sheets 5 enclose into circularly on the lateral wall of simulation test piece 2, make simulation test piece 2 receive circumferential pressure, and first auxiliary rod 11 and the crisscross setting of second auxiliary rod 12 between two adjacent first backing sheets 5 can avoid simulation test piece 2 atress inhomogeneous condition to take place. The limiting nails 14 enable the adjacent two first supporting sheets 5 to relatively move, and meanwhile separation of the adjacent two first supporting sheets 5 is avoided.
Further optimizing scheme, the second supporting plate 6 sets up to the arc, a plurality of second supporting plates 6 enclose into circularly, a plurality of third auxiliary rod 15 have been fixed with to one side of second supporting plate 6, a plurality of third auxiliary rod 15 interval sequence is arranged, form the third auxiliary tank between two adjacent third auxiliary rod 15, the opposite side rigid coupling of second supporting plate 6 has a plurality of fourth auxiliary rod 16, a plurality of fourth auxiliary rod 16 interval sequence is arranged, form the fourth auxiliary tank between two adjacent fourth auxiliary rod 16, the third auxiliary rod 15 inserts in the fourth auxiliary tank, leave the clearance between the tip of third auxiliary rod 15 and the lateral wall in the fourth auxiliary tank, the fourth auxiliary rod 16 inserts in the third auxiliary tank, leave the clearance between the tip of fourth auxiliary rod 16 and the lateral wall in the third auxiliary tank, the bottom rigid coupling of second supporting plate 6 has the slider 17, the slider 17 is located the intermediate position of second supporting plate 6, the axis of slider 17 is located the diameter of second supporting plate 6, slider 17 sliding connection is in spout 18, spout 18 sets up on the top surface of circular bottom plate 19, the axis of spout 18 is located the diameter of bottom plate 19, a plurality of top surface and the circumference of the simulation test piece 2 of the circumference of a plurality of butt pieces 19 are set up to the interval and the bottom plate 19. The second supporting piece 6 is connected to the circular bottom plate 19 in a sliding manner, and a baffle is fixedly connected to one end of the chute 18, which is close to the outer edge of the circular bottom plate 19, so that the second supporting piece 6 is prevented from falling out of the chute 18.
Further optimizing scheme, the bottom wall of the outer shell 1 is fixedly connected with a placing base 20, a cavity 21 is formed in the placing base 20, a telescopic rod 22 is fixedly connected to the bottom wall of the cavity 21, the telescopic end of the telescopic rod 22 penetrates into the outer shell 1 and is fixedly connected with a supporting plate 23, and the supporting plate 23 is abutted to the bottom surface of the circular bottom plate 19. The telescopic rod 22 is provided to facilitate the operator to take out the simulation test piece 2. When the telescopic rod 22 is retracted to the shortest position, the bottom surface of the pallet 23 abuts against the bottom wall of the outer casing 1.
Further optimizing scheme, go up the pressurization subassembly and include last pressurization post 24, go up pressurization post 24 and be located the top of simulation test piece 2, go up and be provided with pressurization board 25 between the pressurization post 24. A gap is left between the pressing plate 25 and the first supporting plate 5. The pressurizing column 24 is located on an external pressurizing machine (not shown in the drawing), and the external pressurizing machine pressurizes the simulation test piece 2 through the pressurizing column 24.
Further optimizing scheme has seted up first intubate hole on the lateral wall of pressurization board 25, has seted up the second intubate hole on the bottom surface of pressurization board 25, and first intubate hole and second intubate hole intercommunication are worn to be equipped with high-pressure water injection pipe 4 in the first intubate hole, wear to be equipped with flexible pipe 26 in the second intubate hole, flexible pipe 26 and high-pressure water injection pipe 4 intercommunication, flexible pipe 26 is kept away from the one end of high-pressure water injection pipe 4 and is penetrated in the simulation water injection well 3, is provided with sealing member 27 between flexible pipe 26 and the simulation water injection well 3.
Further optimizing scheme, offered the heating chamber in the first backing sheet 5, be provided with zone of heating 28 and heat preservation 29 in the heating chamber, zone of heating 28 is close to simulation test piece 2. The simulation test piece 2 is heated through the heating layer 28, and the environment where the dry-heated rock is located is further simulated. The heating layer 28 and the heat insulating layer 29 are all of the prior art, and will not be described here.
When the test piece simulation device is used, firstly, the simulation test piece 2 is placed into the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, then the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly are placed into the outer shell 1, the middle position of the outer side wall of the first supporting piece 5 is opposite to the pressurizing end of the first pressurizing piece 7, the middle position of the outer side wall of the second supporting piece 6 is opposite to the pressurizing end of the second pressurizing piece 10, the pressure is applied to the simulation test piece 2 through the first pressurizing piece 7 and the second pressurizing piece 10, the external pressurizing machine is started, the pressurizing column 24 applies vertical pressure to the simulation test piece 2, the heating layer 28 heats the simulation test piece 2, the acoustic emission monitoring device is started to monitor the whole test process, normal-temperature water is injected into the simulation water injection well 3 through the high-pressure water injection pipe 4 until the simulation test piece 2 is subjected to shearing damage, the experiment is stopped, meanwhile, the monitoring of the acoustic emission testing machine is stopped, the damaged test piece is placed into the cross-size CT scanning testing machine, and the propagation and expansion characteristics of each section crack of the test piece are reconstructed in an inversion mode.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (5)
1. A water injection fracturing shear test system for simulating geothermal system dry hot rock, its characterized in that includes: the water injection device comprises an outer shell body (1), wherein a first pressurizing assembly and a second pressurizing assembly are fixedly connected to the outer side wall of the outer shell body (1), an upper auxiliary pressurizing assembly and a lower auxiliary pressurizing assembly are arranged in the outer shell body (1), the first pressurizing assembly penetrates into the outer shell body (1) to be in butt joint with the upper auxiliary pressurizing assembly, the second pressurizing assembly penetrates into the outer shell body (1) to be in butt joint with the lower auxiliary pressurizing assembly, a simulation test piece (2) is arranged in the outer shell body (1), the simulation test piece (2) is positioned in the upper auxiliary pressurizing assembly and the lower auxiliary pressurizing assembly, a simulation water injection well (3) is formed in the top surface of the simulation test piece (2), a high-pressure water injection pipe (4) is communicated with the simulation water injection well (3), and the top end of the simulation test piece (2) is in butt joint with the upper pressurizing assembly;
the upper auxiliary pressurizing assembly comprises a plurality of first supporting pieces (5), the first supporting pieces (5) are circumferentially arranged at equal intervals on the outer side of the simulation test piece (2), and the first supporting pieces (5) are abutted with the outer side wall of the simulation test piece (2);
the lower auxiliary pressurizing assembly comprises a plurality of second supporting pieces (6), the second supporting pieces (6) are circumferentially arranged at equal intervals on the outer side of the simulation test piece (2), and the second supporting pieces (6) are abutted with the outer side wall of the simulation test piece (2);
the first pressurizing assembly comprises a plurality of first pressurizing pieces (7), the plurality of first pressurizing pieces (7) are circumferentially arranged on the outer side wall of the outer shell (1) at equal intervals, the first pressurizing pieces (7) are arranged in one-to-one correspondence with the first supporting pieces (5), and the pressurizing ends of the first pressurizing pieces (7) extend into the outer shell (1) and are abutted to the outer side wall of the first supporting pieces (5);
two connecting lugs (8) are arranged at one end of the first pressing piece (7) close to the outer shell (1), the two connecting lugs (8) are symmetrically arranged and fixedly connected to the outer side wall of the first pressing piece (7), and the connecting lugs (8) are fixedly arranged on the outer side wall of the outer shell (1) through screws (9);
the second pressurizing assembly comprises a plurality of second pressurizing pieces (10), the second pressurizing pieces (10) are circumferentially arranged on the outer side wall of the outer shell (1) at equal intervals, the second pressurizing pieces (10) are arranged in one-to-one correspondence with the second supporting pieces (6), and the pressurizing ends of the second pressurizing pieces (10) extend into the outer shell (1) and are abutted against the outer side wall of the second supporting pieces (6);
the first supporting plates (5) are arranged in an arc shape, a plurality of first supporting plates (5) are surrounded into a circle shape, a plurality of first auxiliary rods (11) are fixedly connected to one side of each first supporting plate (5), the plurality of first auxiliary rods (11) are sequentially arranged at intervals, a first auxiliary groove is formed between two adjacent first auxiliary rods (11), a plurality of second auxiliary rods (12) are fixedly connected to the other side of each first supporting plate (5), a plurality of second auxiliary rods (12) are sequentially arranged at intervals, a second auxiliary groove is formed between two adjacent second auxiliary rods (12), the first auxiliary rods (11) are inserted into the second auxiliary grooves, gaps are reserved between the end parts of the first auxiliary rods (11) and the side walls of the second auxiliary grooves, the second auxiliary rods (12) are inserted into the first auxiliary grooves, gaps are reserved between the end parts of the second auxiliary rods (12) and the side walls of the first auxiliary grooves, the first auxiliary rods (11) and the second auxiliary rods (12) are sequentially arranged at intervals, the second auxiliary rods (12) are formed between the second auxiliary rods (12) and are correspondingly provided with the second auxiliary rods (13), and the second auxiliary rods (13) are arranged in the second auxiliary rods (13) and the second auxiliary rods (13) are arranged in the second auxiliary grooves, and the second auxiliary rods (13) are provided with the second auxiliary rods (13) and the second auxiliary rods are respectively;
the second supporting plates (6) are arranged in an arc shape, a plurality of second supporting plates (6) are surrounded into a circle shape, one side of each second supporting plate (6) is fixedly connected with a plurality of third auxiliary rods (15), the plurality of third auxiliary rods (15) are sequentially arranged at intervals, a third auxiliary groove is formed between two adjacent third auxiliary rods (15), a plurality of fourth auxiliary rods (16) are fixedly connected with the other side of each second supporting plate (6), a fourth auxiliary groove is formed between two adjacent fourth auxiliary rods (16) at intervals, the third auxiliary rods (15) are inserted into the fourth auxiliary grooves, a gap is reserved between the end parts of the third auxiliary rods (15) and the side walls of the fourth auxiliary grooves, the fourth auxiliary rods (16) are inserted into the third auxiliary grooves, a gap is reserved between the end parts of the fourth auxiliary rods (16) and the side walls of the third auxiliary grooves, the bottom ends of the second supporting plates (6) are fixedly connected with sliding blocks (17), the sliding blocks (17) are fixedly connected with the bottom ends of the second supporting plates (6) at intervals, the diameter of the sliding blocks (17) is larger than the diameter of the sliding blocks (18) on the circular sliding blocks (18) which are positioned on the top surfaces (18), the sliding grooves (18) are circumferentially arranged at equal intervals, and the simulation test piece (2) is abutted to the top surface of the circular bottom plate (19).
2. The water injection fracturing shear test system for simulating geothermal system dry-hot rock of claim 1, wherein: the utility model discloses a circular bottom plate, including shell body (1), bottom wall, telescopic link, support plate (23) and circular bottom plate (19), the rigid coupling has place base (20) on the diapire of shell body (1), place cavity (21) have been seted up in base (20), rigid coupling has telescopic link (22) on the diapire of cavity (21), the telescopic end of telescopic link (22) penetrates in shell body (1) and rigid coupling have support plate (23), support plate (23) with the bottom surface butt of circular bottom plate (19).
3. The water injection fracturing shear test system for simulating geothermal system dry-hot rock of claim 1, wherein: the upper pressurizing assembly comprises an upper pressurizing column (24), the upper pressurizing column (24) is located at the top end of the simulation test piece (2), and a pressurizing plate (25) is arranged between the upper pressurizing columns (24).
4. The water injection fracturing shear test system for simulating geothermal system dry-hot rock of claim 3, wherein: the side wall of the pressurizing plate (25) is provided with a first pipe inserting hole, the bottom surface of the pressurizing plate (25) is provided with a second pipe inserting hole, the first pipe inserting hole is communicated with the second pipe inserting hole, a high-pressure water injection pipe (4) is arranged in the first pipe inserting hole in a penetrating mode, a telescopic pipe (26) is arranged in the second pipe inserting hole in a penetrating mode, the telescopic pipe (26) is communicated with the high-pressure water injection pipe (4), one end, away from the high-pressure water injection pipe (4), of the telescopic pipe (26) penetrates into the simulated water injection well (3), and a sealing piece (27) is arranged between the telescopic pipe (26) and the simulated water injection well (3).
5. The water injection fracturing shear test system for simulating geothermal system dry-hot rock of claim 1, wherein: a heating cavity is formed in the first supporting piece (5), a heating layer (28) and a heat preservation layer (29) are arranged in the heating cavity, and the heating layer (28) is close to the simulation test piece (2).
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Citations (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1171762A (en) * | 1965-11-01 | 1969-11-26 | Molins Machine Co Ltd | Improvements in or relating to Packing Machines. |
| US4075885A (en) * | 1977-02-23 | 1978-02-28 | Iowa State University Research Foundation, Inc. | Rock borehole shear tester |
| GB9102248D0 (en) * | 1991-02-01 | 1991-03-20 | Univ Heriot Watt | Test cell |
| US5226310A (en) * | 1990-08-31 | 1993-07-13 | Exxon Production Research Company | Methods and apparatuses for measurement of the strengths, pore pressures, and mechanical properties of low permeability geologic materials |
| CN203685174U (en) * | 2014-01-26 | 2014-07-02 | 西南石油大学 | Deep well and ultra-deep well drilling rock drillability testing device |
| CN105784976A (en) * | 2016-05-18 | 2016-07-20 | 武汉大学 | Dynamic rock mass unloading effect test device and test method thereof |
| CN106761721A (en) * | 2016-11-28 | 2017-05-31 | 中国石油大学(华东) | For the experimental provision and its experimental technique of the consideration thermal stress fracturing intrinsic fracture development heat reservori transformation of enhanced geothermal system |
| KR101814020B1 (en) * | 2017-08-31 | 2018-01-02 | 한국건설기술연구원 | Current Hydraulic Fracturing System for Applying Differential Stress |
| KR101814019B1 (en) * | 2017-08-31 | 2018-01-30 | 한국건설기술연구원 | Current Hydraulic Fracturing System for Applying Differential Stress |
| CN108801799A (en) * | 2018-07-05 | 2018-11-13 | 中国地质大学（北京） | Rock fracture physical simulation system and test method |
| CN109138950A (en) * | 2018-09-17 | 2019-01-04 | 河南工程学院 | The experimental provision and method of microorganism displacement gas under a kind of true triaxial environment |
| CN110132820A (en) * | 2019-06-19 | 2019-08-16 | 四川大学 | Carry out the device design and method of the test of crack rock anisotropic seepage using rock true triaxial load test system |
| CN110242267A (en) * | 2019-05-17 | 2019-09-17 | 山东科技大学 | For simulating the hydraulic fracturing shearing test system and method for geothermal system hot dry rock |
| CN110675721A (en) * | 2019-09-30 | 2020-01-10 | 鸿蒙能源(山东)有限公司 | Multi-working-condition hot dry rock geothermal exploitation simulation equipment |
| CN210033420U (en) * | 2019-05-26 | 2020-02-07 | 西南石油大学 | Experimental device for simulating shale formation fracturing and crack formation |
| CN111122335A (en) * | 2019-12-31 | 2020-05-08 | 中国地质大学（北京） | Loading device for rock fracturing simulation and rock fracturing simulation equipment |
| CN111551442A (en) * | 2020-06-05 | 2020-08-18 | 中国华能集团清洁能源技术研究院有限公司 | Device for building hot dry rock heat storage by experimental simulation of multi-type fluid fracturing |
| CN211990989U (en) * | 2020-04-29 | 2020-11-24 | 江阴金海丰法兰有限公司 | Clamp for turning thin-wall flange |
| CN212206913U (en) * | 2020-06-05 | 2020-12-22 | 中国华能集团清洁能源技术研究院有限公司 | Device for building hot dry rock heat storage by experimental simulation of multi-type fluid fracturing |
| CN214053739U (en) * | 2020-12-22 | 2021-08-27 | 武汉永辉宏昌制冷配件有限公司 | Special tool for machining coaxial double-bearing holes of Bundy tube roller in condenser |
| CN113417615A (en) * | 2020-03-02 | 2021-09-21 | 中国石油化工股份有限公司 | Hot dry rock fracturing injection-production simulation experiment device |
| WO2021203453A1 (en) * | 2020-04-08 | 2021-10-14 | 四川大学 | On-site microwave rock breaking simulation system and simulation method |
| WO2021208379A1 (en) * | 2020-04-13 | 2021-10-21 | 中国石油天然气股份有限公司 | Hydraulic fracturing simulation experiment device and experiment method |
| CN113686693A (en) * | 2021-08-25 | 2021-11-23 | 东北大学 | Rock deep-ground combined fracturing, geothermal injection and production and seepage simulation test system |
| CN214844438U (en) * | 2021-07-05 | 2021-11-23 | 上海市市政公路工程检测有限公司 | Longitudinal load test fixture for plastic corrugated pipe |
| CN114152554A (en) * | 2021-12-03 | 2022-03-08 | 中国矿业大学 | Hydraulic shear stimulation hot dry rock reservoir permeability increasing simulation experiment system and experiment method |
| CN216115898U (en) * | 2021-11-09 | 2022-03-22 | 哈尔滨理工大学 | Efficient object surface three-dimensional measuring device |
| CN114486565A (en) * | 2022-02-15 | 2022-05-13 | 中国矿业大学 | Rock structural surface dynamic bidirectional shearing experimental system under constant normal stiffness condition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9151154B2 (en) * | 2013-05-31 | 2015-10-06 | Halliburton Energy Services, Inc. | Flow through test cell |
-
2022
- 2022-06-21 CN CN202210703299.1A patent/CN114893177B/en active Active
Patent Citations (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1171762A (en) * | 1965-11-01 | 1969-11-26 | Molins Machine Co Ltd | Improvements in or relating to Packing Machines. |
| US4075885A (en) * | 1977-02-23 | 1978-02-28 | Iowa State University Research Foundation, Inc. | Rock borehole shear tester |
| US5226310A (en) * | 1990-08-31 | 1993-07-13 | Exxon Production Research Company | Methods and apparatuses for measurement of the strengths, pore pressures, and mechanical properties of low permeability geologic materials |
| GB9102248D0 (en) * | 1991-02-01 | 1991-03-20 | Univ Heriot Watt | Test cell |
| CN203685174U (en) * | 2014-01-26 | 2014-07-02 | 西南石油大学 | Deep well and ultra-deep well drilling rock drillability testing device |
| CN105784976A (en) * | 2016-05-18 | 2016-07-20 | 武汉大学 | Dynamic rock mass unloading effect test device and test method thereof |
| CN106761721A (en) * | 2016-11-28 | 2017-05-31 | 中国石油大学(华东) | For the experimental provision and its experimental technique of the consideration thermal stress fracturing intrinsic fracture development heat reservori transformation of enhanced geothermal system |
| KR101814020B1 (en) * | 2017-08-31 | 2018-01-02 | 한국건설기술연구원 | Current Hydraulic Fracturing System for Applying Differential Stress |
| KR101814019B1 (en) * | 2017-08-31 | 2018-01-30 | 한국건설기술연구원 | Current Hydraulic Fracturing System for Applying Differential Stress |
| CN108801799A (en) * | 2018-07-05 | 2018-11-13 | 中国地质大学（北京） | Rock fracture physical simulation system and test method |
| CN109138950A (en) * | 2018-09-17 | 2019-01-04 | 河南工程学院 | The experimental provision and method of microorganism displacement gas under a kind of true triaxial environment |
| CN110242267A (en) * | 2019-05-17 | 2019-09-17 | 山东科技大学 | For simulating the hydraulic fracturing shearing test system and method for geothermal system hot dry rock |
| CN210033420U (en) * | 2019-05-26 | 2020-02-07 | 西南石油大学 | Experimental device for simulating shale formation fracturing and crack formation |
| CN110132820A (en) * | 2019-06-19 | 2019-08-16 | 四川大学 | Carry out the device design and method of the test of crack rock anisotropic seepage using rock true triaxial load test system |
| CN110675721A (en) * | 2019-09-30 | 2020-01-10 | 鸿蒙能源(山东)有限公司 | Multi-working-condition hot dry rock geothermal exploitation simulation equipment |
| CN111122335A (en) * | 2019-12-31 | 2020-05-08 | 中国地质大学（北京） | Loading device for rock fracturing simulation and rock fracturing simulation equipment |
| CN113417615A (en) * | 2020-03-02 | 2021-09-21 | 中国石油化工股份有限公司 | Hot dry rock fracturing injection-production simulation experiment device |
| WO2021203453A1 (en) * | 2020-04-08 | 2021-10-14 | 四川大学 | On-site microwave rock breaking simulation system and simulation method |
| WO2021208379A1 (en) * | 2020-04-13 | 2021-10-21 | 中国石油天然气股份有限公司 | Hydraulic fracturing simulation experiment device and experiment method |
| CN211990989U (en) * | 2020-04-29 | 2020-11-24 | 江阴金海丰法兰有限公司 | Clamp for turning thin-wall flange |
| CN111551442A (en) * | 2020-06-05 | 2020-08-18 | 中国华能集团清洁能源技术研究院有限公司 | Device for building hot dry rock heat storage by experimental simulation of multi-type fluid fracturing |
| CN212206913U (en) * | 2020-06-05 | 2020-12-22 | 中国华能集团清洁能源技术研究院有限公司 | Device for building hot dry rock heat storage by experimental simulation of multi-type fluid fracturing |
| CN214053739U (en) * | 2020-12-22 | 2021-08-27 | 武汉永辉宏昌制冷配件有限公司 | Special tool for machining coaxial double-bearing holes of Bundy tube roller in condenser |
| CN214844438U (en) * | 2021-07-05 | 2021-11-23 | 上海市市政公路工程检测有限公司 | Longitudinal load test fixture for plastic corrugated pipe |
| CN113686693A (en) * | 2021-08-25 | 2021-11-23 | 东北大学 | Rock deep-ground combined fracturing, geothermal injection and production and seepage simulation test system |
| CN216115898U (en) * | 2021-11-09 | 2022-03-22 | 哈尔滨理工大学 | Efficient object surface three-dimensional measuring device |
| CN114152554A (en) * | 2021-12-03 | 2022-03-08 | 中国矿业大学 | Hydraulic shear stimulation hot dry rock reservoir permeability increasing simulation experiment system and experiment method |
| CN114486565A (en) * | 2022-02-15 | 2022-05-13 | 中国矿业大学 | Rock structural surface dynamic bidirectional shearing experimental system under constant normal stiffness condition |
Non-Patent Citations (7)
| Title |
|---|
| Evolution of the permeability and pore structure of transversely isotropic calcareous sediments subjected to triaxial pressure and high temperature;Tao Meng;《Engineering Geology》;第253卷;全文 * |
| Hydraulic properties of 3D rough-walled fractures during shearing: An experimental study.《Journal of Hydrology》.2017,全文. * |
| 干热岩压裂裂缝剪切滑移特性研究;徐志鹏;《中国优秀硕士论文全文库工程科技I辑》(第1期);全文 * |
| 深层地热储层水力剪切增透机制研究进展;张洪伟，等;《煤炭科学》;第46卷(第10期);全文 * |
| 深层干热岩水力剪切压裂认识与实践;郭建春，等;《地质学报》;第95卷(第5期);全文 * |
| 粉砂质泥岩常规力学、蠕变以及应力松弛特性的对比研究;于怀昌，等;《岩石力学与工程学报》;第31卷(第1期);全文 * |
| 高压流体注入对煤岩变形和破裂特性的影响;刘超，等;《煤炭学报》;第47卷(第5期);全文 * |
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