CN110056337B - Proppant settlement simulation device in crack - Google Patents
Proppant settlement simulation device in crack Download PDFInfo
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- CN110056337B CN110056337B CN201910299375.5A CN201910299375A CN110056337B CN 110056337 B CN110056337 B CN 110056337B CN 201910299375 A CN201910299375 A CN 201910299375A CN 110056337 B CN110056337 B CN 110056337B
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- 238000004088 simulation Methods 0.000 title claims description 28
- 239000007788 liquid Substances 0.000 claims abstract description 68
- 239000004576 sand Substances 0.000 claims abstract description 49
- 238000002347 injection Methods 0.000 claims abstract description 46
- 239000007924 injection Substances 0.000 claims abstract description 46
- 239000012530 fluid Substances 0.000 claims abstract description 38
- 238000004062 sedimentation Methods 0.000 claims abstract description 24
- 230000000903 blocking effect Effects 0.000 claims description 15
- 230000008093 supporting effect Effects 0.000 claims description 11
- 238000005070 sampling Methods 0.000 claims description 10
- 239000011521 glass Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000005336 cracking Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 238000002474 experimental method Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- 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
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
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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
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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 application discloses proppant subsides analogue means in fracture belongs to oil gas field development field. The device comprises: annotate liquid subassembly, notes sand subassembly, crack subassembly, tee bend pipe fitting, advance appearance pipe, shutoff strip and shutoff piece, wherein: the crack component comprises at least four hard transparent blocks fixed through support rods, gaps exist between adjacent hard transparent blocks, part of the gaps are provided with plugging pieces, and the gaps without the plugging pieces are communicated to form a fluid passage of the crack component; the inlet of the fluid passage is communicated with the outlet of the sample inlet pipe; the outlet of the liquid storage tank is communicated with the inlet of the liquid injection pump through a pipeline; the outlet of the sand storage tank is communicated with the inlet of the sand injection pump through a pipeline; the outlet of the injection pump is communicated with the first end of the three-way pipe fitting, the outlet of the injection pump is communicated with the second end of the three-way pipe fitting, and the inlet of the sample injection pipe is communicated with the third end of the three-way pipe fitting. By adopting the method and the device, the proppant sedimentation condition in the complex fracture can be simulated.
Description
Technical Field
The application relates to the technical field of oil and gas field development, in particular to a proppant settlement simulation device in a crack.
Background
With the continuous exploitation of conventional fossil energy such as oil, natural gas and the like, the exploitable amount of the conventional fossil energy is gradually reduced. Shale gas is increasingly receiving attention as an unconventional natural gas resource. However, the shale gas reservoir has the characteristics of low porosity and low permeability, and if the shale gas reservoir is to be exploited, the slickwater fracturing technology is needed to expand the natural fractures of the shale gas reservoir, so that even if a large amount of slickwater enters the shale gas reservoir, the pressure in the natural fractures of the shale gas reservoir is increased to expand the natural fractures of the shale gas reservoir, and complicated artificial fractures which are distributed in a staggered mode are formed. In order to prevent the pressure in the artificial fractures from dropping and the artificial fractures from closing up automatically after the injection of the slickwater is stopped, granular proppant with the density higher than the density of the stratum needs to be mixed into the injected slickwater, then the fractures are injected, the proppant stays in the formed artificial fractures permanently, and the propped artificial fractures are in an open state. However, if the concentration of the proppant is too high, the proppant carrying capacity is poor due to low viscosity of the slickwater, so that the construction failure is easily caused by blockage, and if the concentration of the proppant is too low, although the blockage cannot be caused, the proppant is laid in a small amount and cannot achieve the supporting effect. Therefore, the sedimentation condition of the proppant needs to be simulated after the slickwater carrying the proppant is injected into the artificial fracture before construction, so that the sedimentation rule of the proppant can be known.
In the related technology, two transparent glass plates are fixed in parallel, a gap is reserved between the two transparent glass plates, the gap is a simulated artificial crack, the width of the gap between the two transparent glass plates can be adjusted during fixing so as to simulate the artificial cracks with different widths, then a liquid injection device is used for injecting a prepared mixed liquid of slickwater and propping agent into the gap from one side at a certain speed, and the settlement condition of the propping agent in the gap is observed.
In carrying out the present application, the applicant has found that the related art has at least the following problems:
the device for simulating the artificial fractures only simulates single fractures and cannot simulate complex fractures, however, most of the complex fractures formed in the shale gas reservoir are criss-cross complex fractures, only the single fractures are simulated, and the proppant sedimentation condition in the complex fractures cannot be effectively simulated.
Disclosure of Invention
In order to solve the problem of the related art, the embodiment of the application provides a proppant sedimentation simulation device in a fracture. The technical scheme is as follows:
in a first aspect, there is provided a proppant settling simulation device in a fracture, the device comprising:
annotate liquid subassembly (1), notes sand subassembly (2), crack subassembly (3), tee bend pipe fitting (5), advance appearance pipe (6), shutoff strip (7) and shutoff piece (8), wherein:
the crack component (3) comprises at least four hard transparent blocks fixed through supporting rods, gaps are formed between every two adjacent hard transparent blocks, a blocking piece (8) is arranged in part of the gaps, the gaps without the blocking pieces (8) are communicated to form a fluid passage in the crack component (3), the inlet and the outlet of the fluid passage are located on the outer surface of the crack component (3), the blocking piece (8) is not arranged, and a blocking strip (7) is arranged at the position of the outer surface in the gap which is adjacent to the outer surface of the crack component (3) and is not located at the outlet of the fluid passage;
the inlet of the fluid passage is communicated with the outlet of the sampling pipe (6);
the liquid injection assembly (1) comprises a liquid storage tank (101) and a liquid injection pump (102), wherein the outlet of the liquid storage tank (101) is communicated with the inlet of the liquid injection pump (102) through a pipeline;
the sand injection assembly (2) comprises a sand storage tank (201) and a sand injection pump (202), wherein the outlet of the sand storage tank (201) is communicated with the inlet of the sand injection pump (202) through a pipeline;
the outlet of the liquid injection pump (102) is communicated with the first end of the three-way pipe fitting (5) through a pipeline, the outlet of the sand injection pump (202) is communicated with the second end of the three-way pipe fitting (5) through a pipeline, and the inlet of the sampling pipe (6) is communicated with the third end of the three-way pipe fitting (5) through a pipeline.
Optionally, the hard transparent block has a rectangular parallelepiped structure.
Optionally, the split component (3) has a cuboid structure;
each side of the crack component (3) is provided with a plurality of hard transparent blocks.
Optionally, there are a plurality of said rigid transparent blocks on each side of the crack assembly 3.
Optionally, the proppant sedimentation simulation device in the fracture further includes: a flow meter (9);
the flowmeter (9) is arranged on a pipeline between the inlet of the sampling pipe (6) and the third end of the tee pipe fitting (5).
Optionally, the proppant sedimentation simulation device in the fracture further includes: a pressure gauge (10);
the pressure gauge (10) is arranged on a pipeline between the inlet of the sample inlet pipe (6) and the third end of the three-way pipe fitting (5).
Optionally, the proppant sedimentation simulation device in the fracture further includes: a liquid collection table (11);
a baffle is arranged at the edge of the table top of the liquid collection table (11);
the crack component (3) is placed on the table surface of the liquid collecting table (11).
Optionally, the proppant sedimentation simulation device in the fracture further includes: a circulation pump (12);
the table surface of the liquid collection table (11) is provided with a through hole;
the inlet of the circulating pump (12) is connected with the through hole on the table surface of the liquid collecting table (11) by a pipeline, and the outlet of the circulating pump (12) is communicated with the inlet of the liquid storage tank (101) by a pipeline.
Optionally, the blocking strip (7) and the blocking sheet (8) are transparent.
Optionally, the hard transparent block is an organic glass block.
Optionally, the proppant sedimentation simulation device in the fracture further includes: a video recording device (13);
the video equipment (13) is placed at a preset position outside the crack component (3), and the shooting direction is the direction of the crack component (3).
The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:
in the embodiment of the application, at least four hard transparent blocks fixed through the supporting rod are used to form the crack component 3, a gap is reserved between every two adjacent hard transparent blocks, and then the gap is filled by using the plugging strip 7 and the plugging sheet 8, so that a relatively complex fluid passage (namely an experimental crack) can be formed. The complete proppant sedimentation simulation device in the crack can be formed by matching the liquid injection assembly 1, the sand injection assembly 2, the three-way assembly 5 and the sample inlet pipe 6. Because the fracture assembly 3 can be assembled into a complex fracture, the proppant sedimentation simulation device in the fracture can simulate the proppant sedimentation condition in the complex fracture.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a proppant sedimentation simulation device in a fracture according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a cracking assembly 3 provided in an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a cracking assembly 3 provided in an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a cracking assembly 3 provided in an embodiment of the present application;
FIG. 5 is a schematic structural diagram of a cracking assembly 3 provided in an embodiment of the present application;
fig. 6 is a schematic diagram of a proppant sedimentation simulation device in a fracture according to an embodiment of the present application;
fig. 7 is a schematic diagram of a proppant sedimentation simulation device in a fracture according to an embodiment of the present application;
fig. 8 is a schematic diagram of a proppant sedimentation simulation device in a fracture according to an embodiment of the present application;
fig. 9 is a schematic diagram of a proppant sedimentation simulation device in a fracture according to an embodiment of the present application.
Description of the figures
In fig. 1: 1. annotate liquid subassembly, 2, notes sand subassembly, 3, crack subassembly, 5, tee bend pipe fitting, 6, advance the appearance pipe, 101, liquid storage pot, 102, liquid charge pump, 201, sand storage pot, 202, notes sand pump.
In fig. 2: 7. and (5) a plugging strip 8 and a plugging sheet.
In fig. 3: 7. and (5) a plugging strip 8 and a plugging sheet.
In fig. 5: 6. and (4) a sampling pipe.
In fig. 6: 9. flowmeter, 10, manometer.
In fig. 7: 11. a liquid collection platform.
In fig. 8: 11. a liquid collecting platform 12 and a circulating pump.
In fig. 9: 13. a video recording apparatus.
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a proppant subsides analogue means in fracture, as shown in fig. 1, the proppant subsides analogue means in fracture includes: annotate liquid subassembly 1, notes sand subassembly 2, crack subassembly 3, tee bend pipe fitting 5, advance appearance pipe 6, shutoff strip 7 and shutoff piece 8, wherein: the crack component 3 comprises at least four hard transparent blocks fixed through supporting rods, gaps exist between every two adjacent hard transparent blocks, a blocking piece 8 is arranged in each gap, and the gaps without the blocking pieces 8 are communicated to form a fluid passage inside the crack component 3. The inlet and outlet of the fluid passage are located at the outer surface of the fracture assembly 3, the plugging sheet 8 is not provided, and the plugging strip 7 is provided at the position of the outer surface in the gap adjacent to the outer surface of the fracture assembly 3 and not located at the outlet of the fluid passage; the inlet of the fluid passage is communicated with the outlet of the sampling pipe 6; the liquid injection assembly 1 comprises a liquid storage tank 101 and a liquid injection pump 102, wherein the outlet of the liquid storage tank 101 is communicated with the inlet of the liquid injection pump 102 through a pipeline; the sand injection assembly 2 comprises a sand storage tank 201 and a sand injection pump 202, wherein the outlet of the sand storage tank 201 is communicated with the inlet of the sand injection pump 202 through a pipeline; the outlet of the liquid injection pump 102 is communicated with the first end of the three-way pipe fitting 5 through a pipeline, the outlet of the sand injection pump 202 is communicated with the second end of the three-way pipe fitting 5 through a pipeline, and the inlet of the sample inlet pipe 6 is communicated with the third end of the three-way pipe fitting 5 through a pipeline.
Wherein, the hard transparent block and the plugging sheet 7 can be made of organic glass, the plugging strip 8 can be made of rubber, and the pipeline can be a pressure-resistant plastic hose.
In practice, the technician may assemble the fracture assembly 3 according to the actual fracture complexity to be simulated. As shown in fig. 2, which is a top view of the split module 3, the front view and the left side view of the split module 3 are the same as the top view, and the split module 3 is composed of 2 × 2 hard transparent blocks and 4 × 4 × 2 support rods. It is understood that, besides the way of fixing the hard transparent block by the support rod shown in fig. 2, there may be other ways of fixing the hard transparent block by the support rod, and the application is not limited to the way of fixing the transparent hard block by the support rod. Four corners of any three pairwise adjacent side surfaces on each hard transparent block can be drilled with through holes perpendicular to the side surface, and any two through holes cannot be communicated with each other, so that the supporting rod can penetrate through the through holes. The outer surface of the supporting rod can be sleeved with threads, so that when the transparent hard block is fixed, a nut can be arranged on the supporting rod outside each through hole, and the transparent hard block is fixed and cannot slide. Gaps exist between adjacent transparent hard blocks, and the width of the gaps can be adjusted during assembly according to needs. A plugging sheet 8 is arranged in a part of the gap, and the gap without the plugging sheet 8 is communicated to form a fluid passage inside the fracture assembly 3. The inlet and outlet of the fluid passage are located at the outer surface of the fracture assembly, and the blocking strip 7 is provided at the location of the outer surface in the gap adjacent to the outer surface of the fracture assembly 3 and not at the outlet of the fluid passage, without the blocking sheet 8. As shown in fig. 3, which is a three-dimensional view of the fractured component 3, the black filled gaps between the transparent hard blocks represent fluid passages inside the fractured component 3, the black filled gaps are not provided with the blocking pieces 8, and in the top view in fig. 3, one ends of the fluid passages having hollow circles represent inlets of the fluid passages, and one ends of the fluid passages having solid circles represent outlets of the fluid passages.
The inlet of the fluid path in the fracture assembly 3 communicates with the outlet of the sample entry tube 6 to enable the proppant sample to enter the fluid path.
The liquid injection assembly 1 consists of a liquid storage tank 101 and a liquid injection pump 102, wherein the outlet of the liquid storage tank 101 is communicated with the inlet of the liquid injection pump 102 through a pipeline. The sand injection assembly 2 is composed of a sand storage tank 201 and a sand injection pump 202, wherein the outlet of the sand storage tank 201 is communicated with the inlet of the sand injection pump 202 through a pipeline. The proppant is prepared from liquid and sand, so the liquid in the liquid storage tank 101 and the sand in the sand storage pipe 201 are gathered into a pipeline. The outlet of the liquid injection pump 102 is communicated with the first end of the three-way pipe fitting 5 through a pipeline, the outlet of the sand injection pump 202 is communicated with the second end of the three-way pipe fitting 5 through a pipeline, and the inlet of the sample inlet pipe 6 is communicated with the third end of the three-way pipe fitting 5 through a pipeline. Thus, a proppant sample, mixed by the fluid in reservoir 101 and sand in sand reservoir 201, may enter the fluid path from the inlet tube 6.
Optionally, the hard transparent block may have a rectangular parallelepiped structure.
In practice, the hard transparent block with a rectangular parallelepiped structure can be slit as required to change the trajectory of the fluid passage, as shown in fig. 4, which is a top view of a 2 × 2 slit assembly 3, wherein the transparent hard block shown in the lower right corner is symmetrically slit, so that a fluid passage with a 45 ° corner can be formed as shown in the figure. According to different requirements, the hard transparent blocks of the cuboid can be cut into seams at different angles.
Alternatively, the crack module 3 composed of hard transparent blocks may have a rectangular parallelepiped structure.
In practice, the crack module 3 may be expanded according to the situation of a complex crack to be simulated actually, and a plurality of hard transparent blocks are arranged on each side of the crack module 3 to form the crack module 3 consisting of a × b × c hard transparent blocks. The slit assembly 3 shown in fig. 5 is a cube structure with 4 rigid transparent blocks on each side and 16 rigid transparent blocks on each side for a total of 4 × 4 × 4 rigid transparent blocks, and the installation of the sampling tube 6 on the slit assembly 3 is also shown in fig. 5. Similarly, a gap is reserved between two adjacent hard transparent blocks. The cracks are filled by means of the plugging sheet 8 and the plugging strip 7, the unfilled cracks constituting fluid passages.
Optionally, in order to be able to detect the rate of injection of the proppant sample, a flow meter 9 may be provided in the line between the inlet of the sampling pipe 6 and the third end of the tee 5, as shown in fig. 6.
Optionally, a pressure gauge 10 may be further disposed on the pipeline between the inlet of the sample inlet pipe 6 and the third end of the tee pipe 5, as shown in fig. 6.
Optionally, in order to better collect the flowing proppant sample during the simulation experiment, the proppant sedimentation simulation device in the crack can further comprise a liquid collection platform 11, and a baffle is arranged at the edge of the table top of the liquid collection platform 11. The crack assembly 3 is placed on the table of the drip table 11.
In operation, as shown in fig. 7, the crevice assembly 3 is placed on the drip table 11. Proppant samples flowing from the fracture assembly 3 during the experiment can be collected by the drip table 11 to avoid being left on the ground and difficult to clean.
Optionally, as shown in fig. 8, in order to recycle the liquid in the proppant flowing out of the fracture component 3, the proppant sedimentation simulation device in the fracture may further include a circulation pump 12, as shown in fig. 7, a through hole is formed in the table top of the liquid collection table 11, an inlet of the circulation pump 12 is connected to the through hole in the table top of the liquid collection table 11 by a pipeline, and an outlet of the circulation pump 12 is communicated to an inlet of the liquid storage tank 101 by a pipeline.
Optionally, in order to enable the experimenter to see the settlement condition of the proppant in the crack assembly, the plugging strip 7 and the plugging sheet 8 in the crack proppant settlement simulation device are transparent.
Optionally, in order to save labor and facilitate recording, the proppant sedimentation simulation device in the crack may further include at least 1 video recording device 13, the video recording device 13 is placed at a preset position outside the crack component 3, and the shooting direction is the direction of the crack component 3.
In implementation, as shown in fig. 9, at least one video device 13 may be disposed outside the fracture component 3, and the specific number of the video devices 13 is determined according to actual situations, so as to be able to clearly photograph the proppant sedimentation condition in the fracture component, and the specific number is not limited.
The device for testing the sedimentation stability of the drilling fluid described in this embodiment has the following specific operation processes:
first, the crack module 3 is assembled using a transparent hard block and a support rod, and a gap between the hard transparent blocks is filled using a packing strip 7 and a packing sheet 8 according to the actual complex crack condition at the time of assembly to form a fluid passage in the crack module 3. Further, a sample introduction pipe 6 is attached to the inlet side of the fluid passage, and the outlet of the sample introduction pipe 6 communicates with the inlet of the fluid passage. And then the assembled crack component 3 is placed on the table surface of the liquid collection table 11.
Then, the liquid storage tank 101 and the liquid injection pump 102 are connected by a pipeline to form the liquid injection assembly 1, and the sand storage tank 201 and the sand injection pump 202 are connected by a pipeline to form the sand injection assembly 2. Then, the outlet of the priming pump 102 is connected to the first end of the tee 5 by a line, the outlet of the sand pump 202 is connected to the second end of the tee 5 by a line, and the inlet of the sample inlet pipe 6 is connected to the third end of the tee 5 by a line. And then the inlet of the circulating pump 12 is connected with the through hole on the table top of the liquid collection table 11 by using a pipeline, and the outlet of the circulating pump 12 is connected with the inlet of the liquid storage tank 101.
Next, a flow meter 9 and a pressure gauge 10 are installed on the line between the inlet of the sample introduction pipe 6 and the third end of the tee pipe 5. To this end, an exemplary intrafracture proppant settling simulator is assembled, as shown in fig. 8.
When the proppant settlement simulation device in the crack is used, the prepared slickwater is added into the liquid storage tank 101, and the ceramsite proppant is added into the sand storage tank 201. In order to ensure that the fluid passages of the simulation device for the settlement of the proppant in the artificial fractures and the fractures on the site have the same hydrodynamic characteristics, the site discharge capacity is converted into the experimental discharge capacity according to the Reynolds similarity principle, and the calculation formula is as follows:
wherein, VeFor the experimental discharge capacity, the unit is m3/min；VfIs the field discharge capacity, in m3/min；hfThe height of the artificial crack is m; wfThe width of the artificial crack is in mm; heHeight of the fluid path in the fracture module 3 in m; weThe width of the fluid path in the slit assembly 3 is in mm. Above hf、Wf、HeAnd WeAnd is the average value of the corresponding parameter.
When in use, sand (the ceramsite proppant) is added at a certain speed, and the concrete formula is as follows:
sand addition rate (experimental displacement) sand concentration/volume density of sand (the ceramsite proppant described above).
In the process of injecting the proppant sample into the fracture component 3, video recording equipment is used for video recording and recording the sand deposition condition in the fluid passage in the fracture component 3.
During the experiment, the liquid in the experiment flows out of the crack component 3 and is injected into the liquid storage tank 101 through the circulating pump 12 for recycling.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (9)
1. A proppant settling simulation apparatus in a fracture, the apparatus comprising:
annotate liquid subassembly (1), notes sand subassembly (2), crack subassembly (3), tee bend pipe fitting (5), advance appearance pipe (6), shutoff strip (7) and shutoff piece (8), wherein:
the crack component (3) comprises at least four hard transparent blocks fixed through supporting rods, the crack component (3) is of a cuboid structure, each side of the crack component (3) is provided with a plurality of hard transparent blocks, gaps exist between adjacent hard transparent blocks, a blocking piece (8) is arranged in part of the gaps, the gaps without the blocking pieces (8) are communicated to form a fluid passage inside the crack component (3), the inlet and the outlet of the fluid passage are positioned on the outer surface of the crack component (3), the blocking piece (8) is not arranged, and a blocking strip (7) is arranged at the position of the outer surface in the gap which is adjacent to the outer surface of the crack component (3) and is not positioned at the outlet of the fluid passage;
through holes perpendicular to the side are drilled in four corners of each of any three adjacent sides on each hard transparent block, the two through holes are not communicated, the through holes in the hard transparent blocks are sleeved on the supporting rods, threads are arranged on the outer surfaces of the supporting rods, and nuts are connected to the supporting rods outside the through holes in a threaded manner;
the inlet of the fluid passage is communicated with the outlet of the sampling pipe (6);
the liquid injection assembly (1) comprises a liquid storage tank (101) and a liquid injection pump (102), wherein the outlet of the liquid storage tank (101) is communicated with the inlet of the liquid injection pump (102) through a pipeline;
the sand injection assembly (2) comprises a sand storage tank (201) and a sand injection pump (202), wherein the outlet of the sand storage tank (201) is communicated with the inlet of the sand injection pump (202) through a pipeline;
the outlet of the liquid injection pump (102) is communicated with the first end of the three-way pipe fitting (5) through a pipeline, the outlet of the sand injection pump (202) is communicated with the second end of the three-way pipe fitting (5) through a pipeline, and the inlet of the sampling pipe (6) is communicated with the third end of the three-way pipe fitting (5) through a pipeline.
2. The proppant settling simulation device in a fracture of claim 1, wherein the rigid transparent block has a rectangular parallelepiped structure.
3. The proppant settling simulator in a fracture of claim 1, further comprising: a flow meter (9);
the flowmeter (9) is arranged on a pipeline between the inlet of the sampling pipe (6) and the third end of the tee pipe fitting (5).
4. The proppant settling simulator in a fracture of claim 1, further comprising: a pressure gauge (10);
the pressure gauge (10) is arranged on a pipeline between the inlet of the sample inlet pipe (6) and the third end of the three-way pipe fitting (5).
5. The proppant settling simulator in a fracture of claim 1, further comprising: a liquid collection table (11);
a baffle is arranged at the edge of the table top of the liquid collection table (11);
the crack component (3) is placed on the table surface of the liquid collecting table (11).
6. The proppant settling simulator in a fracture of claim 1, further comprising: a circulation pump (12);
the table surface of the liquid collection table (11) is provided with a through hole;
the inlet of the circulating pump (12) is connected with the through hole on the table surface of the liquid collecting table (11) by a pipeline, and the outlet of the circulating pump (12) is communicated with the inlet of the liquid storage tank (101) by a pipeline.
7. The proppant sedimentation simulation device in a fracture according to claim 1, wherein the plugging strip (7) and the plugging sheet (8) are transparent.
8. The proppant settling simulation device in a fracture of claim 1, wherein the hard transparent block is an organic glass block.
9. The proppant settling simulator in a fracture of claim 1, further comprising: a video recording device (13);
the video equipment (13) is placed at a preset position outside the crack component (3), and the shooting direction is the direction of the crack component (3).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910299375.5A CN110056337B (en) | 2019-04-15 | 2019-04-15 | Proppant settlement simulation device in crack |
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| CN201910299375.5A CN110056337B (en) | 2019-04-15 | 2019-04-15 | Proppant settlement simulation device in crack |
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| CN110056337A CN110056337A (en) | 2019-07-26 |
| CN110056337B true CN110056337B (en) | 2022-02-01 |
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| CN104237460B (en) * | 2014-07-09 | 2016-05-25 | 中国石油大学(华东) | A kind of device and application thereof of simulating the complicated seam of volume fracturing net proppants settle down rule |
| CN104533404B (en) * | 2014-12-09 | 2017-04-05 | 中国石油集团川庆钻探工程有限公司 | Visual experimental device for simulating proppant migration in complex slotted net |
| CN107816342B (en) * | 2016-09-14 | 2020-04-10 | 中国石油天然气股份有限公司 | Visualization experiment device and method for migration rule of proppant in crack |
| US11365626B2 (en) * | 2017-03-01 | 2022-06-21 | Proptester, Inc. | Fluid flow testing apparatus and methods |
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2019
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