CN112485120A - Visual energy storage fracturing physical simulation test device and test method thereof - Google Patents
Visual energy storage fracturing physical simulation test device and test method thereof Download PDFInfo
- Publication number
- CN112485120A CN112485120A CN202011081753.1A CN202011081753A CN112485120A CN 112485120 A CN112485120 A CN 112485120A CN 202011081753 A CN202011081753 A CN 202011081753A CN 112485120 A CN112485120 A CN 112485120A
- Authority
- CN
- China
- Prior art keywords
- test piece
- fracturing
- simulation
- energy storage
- distributed monitoring
- 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.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 175
- 238000004088 simulation Methods 0.000 title claims abstract description 116
- 238000004146 energy storage Methods 0.000 title claims abstract description 54
- 230000000007 visual effect Effects 0.000 title claims abstract description 44
- 238000010998 test method Methods 0.000 title claims abstract description 14
- 238000012544 monitoring process Methods 0.000 claims abstract description 133
- 239000012530 fluid Substances 0.000 claims abstract description 128
- 239000013307 optical fiber Substances 0.000 claims abstract description 111
- 239000007789 gas Substances 0.000 claims abstract description 58
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000008569 process Effects 0.000 claims abstract description 26
- 239000012071 phase Substances 0.000 claims abstract description 13
- 239000007792 gaseous phase Substances 0.000 claims abstract description 8
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000007789 sealing Methods 0.000 claims description 56
- 239000011435 rock Substances 0.000 claims description 36
- 238000003860 storage Methods 0.000 claims description 34
- 230000015572 biosynthetic process Effects 0.000 claims description 32
- 238000001816 cooling Methods 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 30
- 239000011555 saturated liquid Substances 0.000 claims description 24
- 239000008398 formation water Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 16
- 239000011148 porous material Substances 0.000 claims description 16
- 230000005674 electromagnetic induction Effects 0.000 claims description 14
- 238000010074 rubber mixing Methods 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 13
- 239000011707 mineral Substances 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 11
- 239000006004 Quartz sand Substances 0.000 claims description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 8
- 229920000647 polyepoxide Polymers 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 8
- 230000003712 anti-aging effect Effects 0.000 claims description 7
- 239000011230 binding agent Substances 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- 239000004014 plasticizer Substances 0.000 claims description 7
- 238000004321 preservation Methods 0.000 claims description 7
- 239000012744 reinforcing agent Substances 0.000 claims description 7
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 claims description 6
- 229920000459 Nitrile rubber Polymers 0.000 claims description 6
- 229920001568 phenolic resin Polymers 0.000 claims description 6
- 239000005011 phenolic resin Substances 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 6
- 239000011398 Portland cement Substances 0.000 claims description 4
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 239000011780 sodium chloride Chemical class 0.000 claims description 4
- 238000002372 labelling Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 229910001575 sodium mineral Chemical class 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000000499 gel Substances 0.000 description 16
- 239000000835 fiber Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 10
- 239000001569 carbon dioxide Substances 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 5
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012800 visualization Methods 0.000 description 3
- 238000007794 visualization technique Methods 0.000 description 3
- 239000006229 carbon black Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 1
- 229940067597 azelate Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229940116351 sebacate Drugs 0.000 description 1
- CXMXRPHRNRROMY-UHFFFAOYSA-L sebacate(2-) Chemical compound [O-]C(=O)CCCCCCCCC([O-])=O CXMXRPHRNRROMY-UHFFFAOYSA-L 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000005236 sound signal Effects 0.000 description 1
- 229940114926 stearate Drugs 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
Images
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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording 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
- G01N2203/0001—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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0062—Crack or flaws
-
- 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
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating 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
- G01N2203/023—Pressure
- G01N2203/0234—Low pressure; Vacuum
-
- 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
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
-
- 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
- G01N2203/0658—Indicating or recording means; Sensing means using acoustic or ultrasonic detectors
-
- 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
- G01N2203/0694—Temperature
Abstract
The invention provides a visual energy storage fracturing physical simulation test device and a test method thereof, wherein the visual energy storage fracturing physical simulation test device comprises a transparent seal box, an object model test piece is arranged in an inner cavity of the transparent seal box, a simulation shaft is embedded in the object model test piece, a first distributed monitoring optical fiber is attached to the outer wall of the simulation shaft, a plurality of layers of second distributed monitoring optical fibers laid around the simulation shaft are encapsulated in the object model test piece, and the first distributed monitoring optical fiber and the second distributed monitoring optical fibers are used for monitoring temperature and sound waves; the outside of transparent seal box is equipped with gaseous phase transition system, fracturing fluid injection system and stratum analog system, and three system all stretch into transparent seal box through the pipeline. The invention adopts the optical fiber technology to collect temperature, pressure, sound wave and vibration signals, realizes the visual monitoring and real-time control of the energy storage fracturing physical model, monitors the whole process of the fracture extension process, determines the phase state of gas in the energy storage fracturing process and provides a practical means for researching the gas energy storage fracturing.
Description
Technical Field
The invention belongs to the field of hydraulic fracturing simulation tests, and particularly relates to a visual energy storage fracturing physical simulation test device and a test method thereof.
Background
The hydraulic fracturing is a conventional single-well production and injection increasing technology and plays a vital role in the field of oil and gas well production increasing measures, however, a large amount of water resources are consumed in the hydraulic fracturing process, the gas energy storage fracturing technology has the characteristics of gas mobility and high density of liquid, can replace clear water to perform fracturing, can eliminate the possibility of contact between a stratum and water, reduces the damage of water lock and water sensitivity to the stratum in the fracturing process, supplements stratum energy, is free of water phase and residues, can reduce environmental pollution, saves water resources, can effectively improve the production increasing effect of an oil and gas reservoir, and increasingly becomes the fracturing production increasing technology with the highest production increasing potential.
The current gas energy storage fracturing monitoring technology cannot directly observe the actual fracture form generated by gas energy storage fracturing and the phase change of gas in a stratum, so that the influence factors and the expansion mechanism of the gas energy storage fracturing fracture expansion rule are seriously insufficient to finally influence the fracturing operation effect. Therefore, the gas energy storage fracturing physical model test (physical simulation test) performed by indoor stratum condition simulation is an important means for knowing the fracture propagation mechanism, can directly detect the physical process of simulated gas energy storage fracturing and observe the fracture morphology, and has important significance for fracturing design, optimization and improvement process, for example, the following three related patent applications:
(1) the application document CN102749275A provides a preparation method of a microscopic visualization model of a visualized artificial rock core, which comprises the steps of weighing quartz sand and cement according to design requirements, pressurizing, drying, cutting into a rectangle shape, and then placing on a transparent glass sheet to prepare an observation model.
(2) Application document CN201810605641.8 provides a preparation method of an artificial rock core microscopic visualization model, which comprises mixing and curing a high-strength and high-transmittance resin adhesive, magnesium hydroxide and quartz sand, cutting according to a design size to obtain an artificial rock core sheet, and then adhering to an organic glass substrate through a double-sided adhesive tape to obtain the artificial rock core microscopic visualization model.
(3) CN107219127A provides a visual hydraulic fracturing physical simulation device and method for laboratory, including casing, liquid supply portion and set up first grade seam fracturing unit, second grade seam fracturing unit and tertiary seam fracturing unit in the casing. The visualization method introduced in the patent is a visualization method for researching the inter-fracture interference and the influence relationship between the main fracture and the branch fracture in the hydraulic fracturing process, and is not a physical model visualization method for researching the fracture extension rule.
However, the above application documents and other gas energy storage fracturing physical model tests for indoor stratum condition simulation are all to split the physical model test piece after fracturing and observe, or to carry out CT scanning to the test piece after fracturing, the shortcoming is that the real-time visual monitoring can not be carried out to the fracture extension process, only can observe the final fracturing result, the gaseous phase state in the energy storage fracturing process can not be determined, the concrete process of fracture extension can not be observed, therefore, the visual physical model test needs to be developed urgently, and the crack extension rule and the gas phase change rule of gas energy storage fracturing are studied deeply.
Disclosure of Invention
The embodiment of the invention aims to provide a visual energy storage fracturing physical simulation test device and a test method thereof, so as to overcome the technical defects.
In order to solve the technical problems, the invention provides a visual energy storage fracturing physical simulation test device which comprises a transparent seal box, wherein an inner cavity of the transparent seal box is provided with an object model test piece, a simulation shaft is embedded in the object model test piece, a first distributed monitoring optical fiber is attached to the outer wall of the simulation shaft, and a plurality of second distributed monitoring optical fibers laid around the simulation shaft are encapsulated in the object model test piece;
the outside of transparent seal box is equipped with gaseous phase transition system, fracturing fluid injection system and stratum analog system, and three system all stretch into transparent seal box through the pipeline.
Furthermore, the gas phase-state conversion system comprises a cooling device, an inlet of the cooling device is communicated with a gas source and an injection pump which are connected in parallel, and an outlet of the cooling device is connected into the transparent sealing box through a heat insulation pipeline.
Furthermore, the fracturing fluid injection system is provided with at least two paths of liquid conveying pipelines which are respectively a low-viscosity pipeline for conveying low-viscosity fracturing fluid and a high-viscosity pipeline for conveying high-viscosity fracturing fluid;
the low-viscosity pipeline comprises a low-viscosity fracturing fluid storage tank, an inlet of the low-viscosity fracturing fluid storage tank is connected with a first automatic booster pump, and an outlet of the low-viscosity fracturing fluid storage tank extends into the transparent seal box through the pipeline;
the high-viscosity pipeline comprises a high-viscosity fracturing fluid storage tank, an inlet of the high-viscosity fracturing fluid storage tank is connected with a second automatic booster pump, and an outlet of the high-viscosity fracturing fluid storage tank extends into the transparent sealing box through the pipeline.
Further, the stratum simulation system includes the saturated liquid station that is used for storing simulation formation water, is used for simulating the electromagnetic induction heating device of stratum temperature, is used for the vacuum pump of evacuation to the thing mode test piece and is used for simulating the hand pump of stratum pressure, wherein:
the saturated liquid station conveys the formula fluid to the transparent seal box through a pipeline;
the electromagnetic induction heating device comprises a high-frequency alternating current power supply, the high-frequency alternating current power supply is connected with an electromagnetic heating coil, and the electromagnetic heating coil is uniformly distributed at intervals and is wound and attached to the inner wall of the transparent sealing box;
the vacuum pump extends into the transparent sealing box through a pipeline;
the hand pump extends into the transparent sealing box through a pipeline.
The visual energy storage fracturing physical simulation test device also comprises an upper computer, wherein the first distributed monitoring optical fiber and the second distributed monitoring optical fiber are respectively and electrically connected with the upper computer;
the outside of transparent seal box is equipped with the pressure gauge that is used for monitoring the barrel internal pressure of simulation pit shaft and is used for monitoring thing mould test piece pressure, has concatenated the manometer on the pipeline between hand pump and the thing mould test piece, and manometer and pressure gauge electricity respectively connect in the host computer.
Preferably, the object model test piece is cuboid, the number of the hand pumps is at least three, and the three hand pumps respectively pressurize three mutually vertical surfaces of the cuboid object model test piece through three pipelines.
Further, a plurality of second distributed monitoring optical fibers laid around the simulation shaft are packaged in the object model test piece, and the method specifically comprises the following steps:
and a plurality of layers of second distributed monitoring optical fibers are arranged along the central axis of the simulation shaft from bottom to top, a plurality of layers of second distributed monitoring optical fibers are arranged from bottom to top, and the second distributed monitoring optical fibers of each layer are laid in the object model test piece in a concentric ring shape.
The invention also provides a visual energy storage fracturing physical simulation test method, which at least comprises a visual energy storage fracturing physical simulation test device and comprises the following specific steps:
s001, placing a standard test piece in a transparent sealing box, performing test operation on the visual energy storage fracturing physical simulation test device, and performing the next step if the operation is normal;
s002, taking out the standard test piece, and putting the physical model test piece into a transparent sealing box;
s003, starting a stratum simulation system, simulating the temperature of the stratum, and vacuumizing the transparent sealing box;
s004, keeping the temperature of the simulated formation, and injecting saturated liquid into the transparent sealing box from a saturated liquid station;
s005, acquiring temperature data and sound wave data of a simulated shaft by using the first distributed monitoring optical fiber, acquiring temperature data and sound wave data inside the physical model test piece by using the second distributed monitoring optical fiber, and adjusting a stratum simulation system until the temperature data acquired by the two groups of distributed monitoring optical fibers reach uniform temperature;
s006, starting the gas phase state conversion system and the fracturing fluid injection system, fracturing the physical model test piece, recording pressure data, a temperature field and an acoustic wave signal in the fracturing process, and monitoring the fracturing process.
Further, the object model test piece of S002 is divided into two types, namely a outcrop rock sample and an artificial sample, wherein the outcrop rock sample is selected as the specific application of the object model test piece as follows:
s201a, processing a outcrop rock sample with a preset size;
s202a, forming a first hole in the center of the top of the outcrop rock sample, inserting the simulated shaft with the cylinder wall attached with the first distributed monitoring optical fiber into the first hole, pushing high-strength gel to a gap between the cylinder wall and the first hole by using an injector, and sealing the gap;
s203a, forming a plurality of layers of annular pore canals on the side wall of the outcrop rock sample from bottom to top along the central axis of the simulated shaft, wherein the central axis of the annular pore canals is overlapped with the central axis of the simulated shaft, a second distributed monitoring optical fiber is laid in each layer of annular pore canal, and a syringe is used for pushing high-strength gel into the annular pore canals to close gaps in the annular pore canals;
s204a, maintaining for 24 hours, and finishing manufacturing of the physical model test piece;
or selecting an artificial sample as the physical model test piece, wherein the specific application is as follows:
s201b, acquiring three-dimensional ground stress, rock mechanical parameters and physical parameters of the target simulated stratum;
s202b, weighing portland cement, quartz sand, a formula fluid and a binder, uniformly mixing the materials according to different proportions to prepare a plurality of simulated cylinders, and labeling;
s203b, testing the rock mechanical parameters and physical parameters of each simulation cylinder, comparing the rock mechanical parameters and physical parameters with the rock mechanical parameters and physical parameters of a target simulation stratum, and if the coincidence rate is higher than 90%, preparing an artificial sample by using the component proportion of the labeled simulation cylinder;
s204b, assembling a mold for preparing an artificial sample, wherein the mold is the same as the artificial sample in size, placing a simulation shaft in the center of the mold, and fixing a first distributed monitoring optical fiber on the outer cylinder wall of the simulation shaft;
s205b, mixing quartz sand, a formula fluid and a binder according to the proportion of each component of the simulation cylinder determined in S203b, uniformly mixing, slowly injecting into a mold at a constant speed, stopping injecting when the height reaches the height of a preset first layer of second distributed monitoring optical fibers, fully vibrating, laying a second layer of second distributed monitoring optical fibers, continuously pouring, repeating for many times until all the second distributed monitoring optical fibers are laid, and continuously pouring and trowelling the surface of the mold;
s206b, maintaining for two days, dismantling the mold, and taking out the artificial sample to finish the manufacture of the physical model test piece.
Preferably, the high strength gels of S202a and S203a are composed of the following components in weight percent:
35% of hydrogenated nitrile rubber, 30% of phenolic resin, 25% of epoxy resin, 5% of plasticizer, 4.5% of reinforcing agent and 0.5% of anti-aging agent;
the preparation method of the high-strength gel comprises the following steps:
according to the proportion, the hydrogenated nitrile rubber is put into a rubber mixing mill and processed into particles, then the rubber mixing mill is heated to 160 ℃, then the phenolic resin, the plasticizer, the reinforcing agent and the anti-aging agent are put into the rubber mixing mill, the temperature of the rubber mixing mill is reduced to 140 ℃, the epoxy resin is added into the rubber mixing mill to obtain high-strength gel, the high-strength gel is poured into a heat-preservation water bath for standby, and the water bath temperature is kept between 90 ℃ and 100 ℃.
Preferably, the formula fluid of the saturated liquid station and the formula fluid of the S202b have the same components, and the preparation method is as follows:
taking the formation water of the target simulated formation as standard formation water, detecting mineral salt components of the standard formation water, and carrying out an ion concentration test;
taking deionized water, sodium chloride and mineral salt with the same composition as that of the mineral salt of standard formation water, and uniformly mixing to obtain an initial formula fluid;
and carrying out an ion concentration test on the initial formula fluid, carrying out similarity comparison on the initial formula fluid and the ion concentration of standard formation water, if the similarity of various ion concentrations reaches more than 95%, sealing and retaining the initial formula fluid as a final formula fluid for later use, otherwise carrying out secondary blending on the initial formula fluid until the similarity reaches 95%.
Further, the starting formation simulation system of S003 specifically includes:
s301, starting an electromagnetic induction heating device, and heating the physical model test piece to a target simulated formation temperature by using an electromagnetic heating ring;
s302, starting a vacuum pump, and vacuumizing the physical model test piece for 72 hours by using the vacuum pump;
s303, maintaining the temperature of the target simulated formation, and conveying the formula fluid to a transparent sealing box by a saturated liquid station;
s304, pressurizing the physical model test piece to a target simulated formation pressure by using a hand-operated pump, and enabling the physical model test piece to be saturated for 120 hours.
Further, the gas phase state conversion system of S006 specifically includes:
opening a gas source, and conveying gas to the cooling device by the gas source;
closing a valve between the gas source and the cooling device, wherein the cooling device cools the compressed gas into liquid;
and starting the injection pump, and pushing the liquid in the cooling device to be conveyed into the transparent sealing box through the heat-insulation pipeline by the injection pump.
Further, the fracturing fluid injection system of S006 specifically includes:
starting a first automatic booster pump, pumping the low-viscosity fracturing fluid in the low-viscosity fracturing fluid storage tank to a transparent seal box, and fracturing a material mold test piece by using the low-viscosity fracturing fluid;
or starting a second automatic booster pump, pumping the high-viscosity fracturing fluid in the high-viscosity fracturing fluid storage tank to the transparent sealing box, and fracturing the object model test piece by using the high-viscosity fracturing fluid.
The invention has the following beneficial effects:
the optical fiber technology is adopted to collect temperature, pressure, sound wave and vibration signals, visual monitoring and real-time control of the energy storage fracturing object model are achieved, the whole process of fracture extension is monitored, the phase state of gas in the energy storage fracturing process is determined, and a practical means is provided for researching gas energy storage fracturing.
In order to make the aforementioned and other objects of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a schematic structural diagram of a visual energy storage fracturing physical simulation test device.
Fig. 2 is a schematic view of the installation location of the distributed monitoring fiber.
Fig. 3 is a schematic view of an installation position of the electromagnetic induction heating apparatus.
Fig. 4 is a sectional view of the transparent sealing box.
Description of reference numerals:
1. a gas source; 2. an injection pump; 3. a cooling device; 4. a valve; 5. a heat-insulating pipeline; 601. a first automatic booster pump; 602. a second automatic booster pump; 7. a low-viscosity fracturing fluid storage tank; 8. a high-viscosity fracturing fluid storage tank; 9. a transparent sealing box; 10. simulating a shaft; 11. a saturated liquid station; 12. an electromagnetic induction heating device; 13. a vacuum pump; 14. a pressure gauge; 15. a hand pump; 16. an upper computer; 17. a first distributed monitoring fiber; 18. a second distributed monitoring fiber; 19. a pressure gauge; 20. and (5) carrying out physical model test piece.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the present invention, the upper, lower, left and right in the drawings are regarded as the upper, lower, left and right of the visual energy storage fracturing physical simulation test device described in this specification.
The exemplary embodiments of the present invention will now be described with reference to the accompanying drawings, however, the present invention may be embodied in many different forms and is not limited to the embodiments described herein, which are provided for complete and complete disclosure of the present invention and to fully convey the scope of the present invention to those skilled in the art. The terminology used in the exemplary embodiments illustrated in the accompanying drawings is not intended to be limiting of the invention. In the drawings, the same units/elements are denoted by the same reference numerals.
Unless otherwise defined, terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Further, it will be understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense.
The first embodiment:
referring to fig. 1, a first embodiment of the invention relates to a visual energy storage fracturing physical simulation test device, which includes a transparent seal box 9, an object model test piece 20 is placed in an inner cavity of the transparent seal box 9, a simulation wellbore 10 is embedded in the object model test piece 20, a first distributed monitoring optical fiber 17 is attached to an outer wall of the simulation wellbore 10, and a plurality of second distributed monitoring optical fibers 18 (shown in fig. 2 and 4) laid around the simulation wellbore 10 are encapsulated in the object model test piece 20, wherein the first distributed monitoring optical fiber 17 and the second distributed monitoring optical fibers 18 have the same structure and are both used for monitoring temperature and sound waves;
the outside of transparent seal box 9 is equipped with gaseous phase transition system, fracturing fluid injection system and stratum analog system, and three system all stretch into transparent seal box 9 through the pipeline.
The application method of the visual energy storage fracturing physical simulation test device comprises the following steps:
placing a standard test piece in the transparent sealing box 9, performing test operation on the visual energy storage fracturing physical simulation test device, and performing the next step if the operation is normal;
taking out the standard test piece, and putting the object model test piece 20 into the transparent sealing box 9;
starting a stratum simulation system, simulating the temperature of the stratum, and vacuumizing the transparent sealing box 9;
keeping the temperature of the simulated formation, and injecting saturated liquid into the transparent sealing box 9 by a formation simulation system;
the first distributed monitoring optical fiber 17 collects temperature data and sound wave data of the simulated shaft 10, meanwhile, the second distributed monitoring optical fiber 18 collects temperature data and sound wave data inside the object model test piece 20, and a stratum simulation system is adjusted until the temperature data collected by the two groups of distributed monitoring optical fibers reach uniform temperature;
and starting the gas phase state conversion system and the fracturing fluid injection system, fracturing the physical model test piece 20, recording pressure data, a temperature field and an acoustic wave signal in the fracturing process, and monitoring the fracturing process.
In the working process, the gas phase state conversion system is used for providing a gas source for the test device and realizing the conversion between the gas state and the liquid state of the gas, and the simulation is the gas phase state in the stratum; the fracturing fluid injection system is used for carrying out fracturing operation on the test device, such as providing low-viscosity fracturing fluid or providing high-viscosity fracturing fluid; the formation simulation system may simulate fluid, temperature, and pressure environments under formation conditions.
The structure of the first distributed monitoring optical fiber 17 is the same as that of the second distributed monitoring optical fiber 18, and both the first distributed monitoring optical fiber and the second distributed monitoring optical fiber are used for monitoring temperature and sound waves, specifically, both the two groups of monitoring optical fibers are composed of a DTS distributed optical fiber temperature monitoring system and a DAS distributed optical fiber sound wave monitoring system, wherein the DTS distributed optical fiber temperature monitoring system can monitor the temperature of different spatial positions in the object model test piece 20; the DAS distributed optical fiber acoustic wave monitoring system can monitor the strength and position of sound signals and vibration signals of the object model test piece 20 in the fracturing process.
The interval of the light pulses emitted by the two distributed monitoring optical fibers is 0.01-1.0 nanosecond, and the resolution of the optical fibers is 0.001-0.1 meter, which can be obtained commercially.
The temperature, sound wave and vibration signals of the testing device are collected by adopting an optical fiber technology, and a three-dimensional dynamic image can be generated according to the data, so that real-time imaging and monitoring are realized.
Second embodiment:
the embodiment relates to a visual energy storage fracturing physical simulation test device which comprises a transparent seal box 9, wherein an object model test piece 20 is arranged in an inner cavity of the transparent seal box 9, a simulation shaft 10 is embedded in the object model test piece 20, a first distributed monitoring optical fiber 17 is attached to the outer wall of the simulation shaft 10, and a plurality of second distributed monitoring optical fibers 18 (shown in fig. 2 and 4) laid around the simulation shaft 10 are encapsulated in the object model test piece 20, wherein the first distributed monitoring optical fibers 17 and the second distributed monitoring optical fibers 18 have the same structure and are used for monitoring temperature and sound waves;
the outside of transparent seal box 9 is equipped with gaseous phase transition system, fracturing fluid injection system and stratum analog system, and three system all stretch into transparent seal box 9 through the pipeline.
As shown in figure 1, the gas phase-state conversion system comprises a cooling device 3, wherein an inlet of the cooling device 3 is communicated with a gas source 1 and an injection pump 2 which are connected in parallel, and an outlet of the cooling device 3 is connected into a transparent sealing box 9 through a heat-preservation pipeline 5.
Liquid nitrogen or carbon dioxide is usually selected as the gas source 1, and the working process of the gas phase-state conversion system will be described by taking carbon dioxide as an example in the following: opening the gas source 1, and delivering carbon dioxide to the cooling device 3 by the gas source 1;
closing a valve 4 between a gas source 1 and a cooling device 3, and cooling and compressing carbon dioxide into liquid;
the injection pump 2 is started and liquid carbon dioxide is injected into the physical model test piece 20 through the heat preservation pipeline 5 at a speed of 10 ml/min.
The fracturing fluid injection system is provided with at least two paths of liquid conveying pipelines, namely a low-viscosity pipeline for conveying low-viscosity fracturing fluid and a high-viscosity pipeline for conveying high-viscosity fracturing fluid, and the two paths of liquid conveying pipelines are shown in figure 1;
the low-viscosity pipeline comprises a low-viscosity fracturing fluid storage tank 7, an inlet of the low-viscosity fracturing fluid storage tank 7 is connected with a first automatic booster pump 601, and an outlet of the low-viscosity fracturing fluid storage tank 7 extends into a transparent seal box 9 through the pipeline;
the high-viscosity pipeline comprises a high-viscosity fracturing fluid storage tank 8, an inlet of the high-viscosity fracturing fluid storage tank 8 is connected with a second automatic booster pump 602, and an outlet of the high-viscosity fracturing fluid storage tank 8 extends into the transparent sealing box 9 through a pipeline.
The operation process of the fracturing fluid injection system is as follows:
starting a first automatic booster pump 601, pumping the low-viscosity fracturing fluid in the low-viscosity fracturing fluid storage tank 7 to a transparent seal box 9, and utilizing the low-viscosity fracturing fluid to fracture the specimen mold test piece 20;
or, the second automatic booster pump 602 is started, the high-viscosity fracturing fluid in the high-viscosity fracturing fluid storage tank 8 is pumped to the transparent sealing box 9, and the object model test piece 20 is fractured by the high-viscosity fracturing fluid.
The low-viscosity fracturing fluid is selected for replacement or the high-viscosity fracturing fluid is selected for real-time fracturing operation, and the selection can be automatically adjusted according to the geological conditions of the simulated stratum.
Referring to fig. 1, the formation simulation system includes a saturated liquid station 11 for storing simulated formation water, an electromagnetic induction heating device 12 for simulating formation temperature, a vacuum pump 13 for evacuating an object model test piece 20, and a hand pump 15 for simulating formation pressure, wherein:
the saturated liquid station 11 conveys the formula fluid to the transparent seal box 9 through a pipeline, and the saturated liquid station has the main function of providing formation fluid for simulating a simulated formation and is convenient to pressurize;
the electromagnetic induction heating device 12 comprises a high-frequency alternating current power supply, the high-frequency alternating current power supply is connected with an electromagnetic heating coil, and the electromagnetic heating coil is uniformly distributed at intervals, wound and attached to the inner wall of the transparent sealing box 9 and used for simulating the formation temperature;
the vacuum pump 13 extends into the transparent sealing box 9 through a pipeline;
the hand pump 15 extends into the transparent sealing box 9 through a pipeline.
The working process of the stratum simulation system is as follows:
starting the electromagnetic induction heating device 12, and heating the physical model test piece 20 to the target simulated formation temperature by using an electromagnetic heating ring;
starting a vacuum pump 13, and vacuumizing the physical model test piece 20 for 72 hours by using the vacuum pump 13;
maintaining the temperature of the target simulated formation, and conveying the formula fluid to the transparent seal box 9 by the saturated liquid station 11;
and (3) pressurizing the physical model test piece 20 to the target simulated formation pressure by using the hand-operated pump 15, and enabling the physical model test piece 20 to be saturated for 120 hours.
The third embodiment:
as shown in fig. 1, the visual energy storage fracturing physical simulation test device provided by the present embodiment further includes an upper computer 16, the first distributed monitoring optical fiber 17 and the second distributed monitoring optical fiber 18 are respectively electrically connected to the upper computer 16, specifically, the host of the DTS distributed optical fiber temperature monitoring system and the DAS distributed optical fiber acoustic wave monitoring system are both connected to the upper computer 16, and the respective optical fibers are laid in the physical model test piece 20;
it should be noted that both the DTS distributed optical fiber temperature monitoring system and the DAS distributed optical fiber acoustic wave monitoring system are commercially available.
The outside of transparent seal box 9 is equipped with pressure gauge 19 that is used for monitoring the barrel internal pressure of simulation pit shaft 10 and is used for monitoring thing model test piece 20 pressure, has concatenated manometer 14 on the pipeline between hand pump 15 and thing model test piece 20, manometer 14 and manometer 19 electricity respectively connect in host computer 16.
The first distributed monitoring optical fiber 17 and the second distributed monitoring optical fiber 18 respectively transmit the acquired temperature data and the acquired sound wave data to the upper computer 16, meanwhile, the pressure gauge 19 and the pressure gauge 14 respectively transmit the acquired pressure data to the upper computer 16, and the upper computer 16 utilizes relevant software to form a three-dimensional dynamic image according to the received data and dynamically displays the three-dimensional dynamic image on a computer display.
In order to realize three-way pressurization of the object model test piece 20, the object model test piece 20 is preferably rectangular, at least three hand pumps 15 are provided, and three mutually vertical surfaces of the rectangular object model test piece 20 are pressurized by the three hand pumps 15 through three pipelines respectively.
The first embodiment describes that "a plurality of second distributed monitoring fibers 18 laid around the simulated wellbore 10 are enclosed in the physical model test piece 20", specifically:
as shown in fig. 2, a plurality of layers of second distributed monitoring fibers 18 are arranged from bottom to top along the central axis of the simulated wellbore 10, and the second distributed monitoring fibers 18 of each layer are laid inside the physical model test piece 20 in a concentric ring shape, as shown in fig. 4.
In fig. 2, 3 layers are arranged from bottom to top, each layer has 3 concentric circles of the second distributed monitoring fibers 18 laid around the simulated wellbore 10, and referring to fig. 4, the simulated wellbore 10 is located at the center of the circles of the second distributed monitoring fibers 18.
The second distributed monitoring fiber 18 is arranged in this way in order to obtain the temperature and the sound wave at different spatial positions inside the object model test piece 20, and to improve the accurate description of the crack propagation.
Fourth embodiment:
the embodiment provides a visual energy storage fracturing physical simulation test method, which at least comprises a visual energy storage fracturing physical simulation test device, and comprises the following specific steps:
s001, placing a standard test piece in a transparent sealing box 9, performing test operation on the visual energy storage fracturing physical simulation test device, and performing the next step if the operation is normal;
s002, taking out the standard test piece, and putting the physical model test piece 20 into the transparent sealing box 9;
s003, starting a stratum simulation system, simulating the temperature of the stratum, and vacuumizing the transparent sealing box 9;
s004, keeping the temperature of the simulated formation, and injecting saturated liquid into the transparent sealing box 9 from the saturated liquid station 11;
s005, collecting temperature data and sound wave data of the simulated shaft 10 by the first distributed monitoring optical fiber 17, simultaneously collecting temperature data and sound wave data inside the object model test piece 20 by the second distributed monitoring optical fiber 18, and adjusting a stratum simulation system until the temperature data collected by the two groups of distributed monitoring optical fibers reach uniform temperature;
s006, start gaseous phase state transition system and fracturing fluid injection system, carry out the fracturing to thing mould test piece 20, record pressure data, temperature field and the acoustic wave signal in the fracturing process, realize the monitoring to the fracturing process.
The visual energy storage fracturing physical simulation test device at least comprises a transparent seal box 9, an object model test piece 20 is arranged in an inner cavity of the transparent seal box 9, a simulation shaft 10 is embedded in the object model test piece 20, a first distributed monitoring optical fiber 17 is attached to the outer wall of the simulation shaft 10, and a plurality of second distributed monitoring optical fibers 18 laid around the simulation shaft 10 are packaged in the object model test piece 20, wherein the structure of the first distributed monitoring optical fiber 17 is the same as that of the second distributed monitoring optical fibers 18, and the first distributed monitoring optical fibers and the second distributed monitoring optical fibers are both used for monitoring temperature and sound waves;
the outside of transparent seal box 9 is equipped with gaseous phase transition system, fracturing fluid injection system and stratum analog system, and three system all stretch into transparent seal box 9 through the pipeline.
On the basis of the above, specifically:
the gas phase state conversion system comprises a cooling device 3, an inlet of the cooling device 3 is communicated with a gas source 1 and an injection pump 2 which are connected in parallel, and an outlet of the cooling device 3 is connected into a transparent sealing box 9 through a heat preservation pipeline 5.
The fracturing fluid injection system is provided with at least two paths of liquid conveying pipelines which are respectively a low-viscosity pipeline for conveying low-viscosity fracturing fluid and a high-viscosity pipeline for conveying high-viscosity fracturing fluid;
the low-viscosity pipeline comprises a low-viscosity fracturing fluid storage tank 7, an inlet of the low-viscosity fracturing fluid storage tank 7 is connected with a first automatic booster pump 601, and an outlet of the low-viscosity fracturing fluid storage tank 7 extends into a transparent seal box 9 through the pipeline;
the high-viscosity pipeline comprises a high-viscosity fracturing fluid storage tank 8, an inlet of the high-viscosity fracturing fluid storage tank 8 is connected with a second automatic booster pump 602, and an outlet of the high-viscosity fracturing fluid storage tank 8 extends into the transparent sealing box 9 through a pipeline.
The stratum simulation system comprises a saturated liquid station 11 for storing simulated stratum water, an electromagnetic induction heating device 12 for simulating the stratum temperature, a vacuum pump 13 for vacuumizing an object model test piece 20 and a hand pump 15 for simulating the stratum pressure, wherein:
the saturated liquid station 11 conveys the formula fluid to the transparent seal box 9 through a pipeline;
the electromagnetic induction heating device 12 comprises a high-frequency alternating current power supply, the high-frequency alternating current power supply is connected with an electromagnetic heating coil, and the electromagnetic heating coil is uniformly distributed at intervals and is wound and attached to the inner wall of the transparent sealing box 9;
the vacuum pump 13 extends into the transparent sealing box 9 through a pipeline;
the hand pump 15 extends into the transparent sealing box 9 through a pipeline.
The visual energy storage fracturing physical simulation test device also comprises an upper computer 16, wherein a first distributed monitoring optical fiber 17 and a second distributed monitoring optical fiber 18 are respectively and electrically connected to the upper computer 16;
the outside of transparent seal box 9 is equipped with pressure gauge 19 that is used for monitoring the barrel internal pressure of simulation pit shaft 10 and is used for monitoring thing model test piece 20 pressure, has concatenated manometer 14 on the pipeline between hand pump 15 and thing model test piece 20, manometer 14 and manometer 19 electricity respectively connect in host computer 16.
The object model test piece 20 is cuboid, at least three hand pumps 15 are provided, and three hand pumps 15 respectively pressurize three mutually vertical surfaces of the cuboid object model test piece 20 through three pipelines.
A plurality of second distributed monitoring optical fibers 18 laid around the simulated shaft 10 are packaged in the object model test piece 20, specifically:
along the central axis of the simulated shaft 10, a plurality of layers of second distributed monitoring fibers 18 are arranged from bottom to top, and the second distributed monitoring fibers 18 of each layer are laid in the object model test piece 20 in a concentric ring shape.
Fifth embodiment:
on the basis of the fourth embodiment, the object model test pieces 20 of S002 are divided into two types, i.e., outcrop rock samples and artificial samples, wherein the specific application of selecting outcrop rock samples as the object model test pieces 20 is as follows:
s201a, processing a outcrop rock sample with a preset size;
s202a, forming a first hole in the center of the top of the outcrop rock sample, inserting the simulated shaft 10 with the cylinder wall attached with the first distributed monitoring optical fiber 17 into the first hole, pushing high-strength gel to a gap between the cylinder wall and the first hole by using an injector, and sealing the gap;
s203a, forming a plurality of layers of annular pore canals on the side wall of the outcrop rock sample from bottom to top along the central axis of the simulated shaft 10, wherein the central axis of the annular pore canals is overlapped with the central axis of the simulated shaft 10, the annular pore canals of each layer are radially and uniformly spaced around the simulated shaft 10 and are positioned on the same horizontal plane, and second distributed monitoring optical fibers 18 are laid in all the annular pore canals of each layer, and a syringe is used for pushing high-strength gel into the annular pore canals to seal gaps in the annular pore canals, as shown in FIG. 4;
s204a, maintaining for 24 hours, and finishing the manufacture of the physical model test piece 20;
with regard to selecting outcrop rock samples as the phantom test pieces 20, the following will be exemplified:
the obtained natural outcrop is processed into an experimental scheme size according to the requirements of an object model experiment, the object model with the size of 30cm × 30cm is adopted in the embodiment, a group of optical fibers (first distributed monitoring optical fibers 17) are attached to the simulation shaft 10 for placement, 2 layers of optical fibers (second distributed monitoring optical fibers 18) are horizontally placed, each layer of 2 groups are respectively located at the height positions of 10cm and 20cm of the object model, and the placement positions can be referred to as fig. 4, and the method specifically comprises the following steps:
a hole is formed in the center of the top of the physical model test piece 20, the depth is 15cm, the diameter is 0.9cm, the simulation shaft 10 (20 cm in height and 0.8cm in diameter) and the first distributed monitoring optical fiber 17 are coated with high-strength gel and inserted into a drill hole, and then the gap between the simulation shaft 10 and the drill hole is completely sealed by the high-strength gel through injection;
drilling holes with the depth of 28cm and the diameter of 0.3cm at the side face of an object model test piece 20, drilling 2 annular channels at each height at the positions of 10cm and 20cm of the object model respectively, symmetrically simulating borehole arrangement, wherein the distance between the annular channels and the simulated borehole is 8cm, smearing high-strength gel on the second distributed monitoring optical fibers 18, inserting the second distributed monitoring optical fibers into the annular channels, and then completely sealing gaps between the second distributed monitoring optical fibers 18 and the annular channels by using the high-strength gel through injection;
and after 24 hours of maintenance, marking the object model to finish the manufacture of the test piece.
Or, selecting an artificial sample as the physical model test piece 20, and the specific application is as follows:
s201b, acquiring three-dimensional ground stress, rock mechanical parameters and physical parameters of the target simulated stratum;
s202b, weighing portland cement, quartz sand, a formula fluid and a binder, uniformly mixing the materials according to different proportions to prepare a plurality of simulated cylinders, and labeling;
s203b, testing the rock mechanical parameters and physical parameters of each simulation cylinder, comparing the rock mechanical parameters and physical parameters with the rock mechanical parameters and physical parameters of a target simulation stratum, and if the coincidence rate is higher than 90%, preparing an artificial sample by using the component proportion of the labeled simulation cylinder;
s204b, assembling a mold for preparing an artificial sample, wherein the mold has the same size as the artificial sample, placing the simulation shaft 10 in the center of the mold, and fixing a first distributed monitoring optical fiber 17 on the outer cylinder wall of the simulation shaft 10;
s205b, mixing quartz sand, a formula fluid and a binder according to the proportion of each component of the simulation cylinder determined in the step S203b, uniformly mixing, slowly injecting the mixture into a mold at a constant speed, stopping injecting when the mixture reaches the height of the preset second distributed monitoring optical fibers 18, fully vibrating, laying the second distributed monitoring optical fibers 18, continuously pouring, repeating for many times until all the second distributed monitoring optical fibers 18 are laid, and continuously pouring and trowelling the surface of the mold;
s206b, maintaining for two days, dismantling the mold, and taking out the artificial sample to finish the manufacture of the physical model test piece 20.
With regard to the selection of an artificial specimen as the phantom specimen 20, the following will be exemplified:
acquiring three-dimensional ground stress, rock mechanical parameters and physical parameters of a simulated stratum;
selecting general portland cement (P.S. A32.5), quartz sand of 70-140 meshes, refined quartz sand of 200 meshes, a formula fluid and a high-strength binder to prepare a simulation cylinder with the diameter of 25mm and the height of 50mm in proportion;
step three, testing the rock mechanical parameters and physical parameters of the simulated cylinder, if the coincidence rate of the rock mechanical parameters and the physical parameters with the real geological parameters is higher than 90%, determining the formula, otherwise, continuously optimizing the formula until the similarity of the rock mechanical parameters and the physical parameters of the simulated cylinder and the real stratum is higher than 90%;
step four, determining the size of the object model, the number of the optical fiber arrangement layers and the number of the optical fiber arrangement layers according to the experimental purpose of object model fracturing, wherein the object model with the size of 30cm (height) × 30cm × 60cm is adopted in the embodiment, one group of optical fibers (first distributed monitoring optical fibers 17) are placed in a joint simulation shaft, 3 optical fibers (second distributed monitoring optical fibers 18) are horizontally placed, 3 groups of each layer are respectively located at the height positions of 5cm, 15cm and 25cm of the object model, and the specific operation is as follows:
step five, assembling a mould with the size of 30cm (height) multiplied by 30cm multiplied by 60cm, placing the simulated shaft 10 at the middle position of the mould in advance, wherein the top of the simulated shaft 10 is 5cm higher than the plane of the mould, and attaching the first distributed monitoring optical fiber 17 to the outside of the simulated shaft 10 and fixing the first distributed monitoring optical fiber by a clamp;
step six, slowly injecting cement mortar into the mold according to the material proportion determined in the step three, stopping injecting when the thickness reaches the preset optical fiber height (5cm, 15cm and 25cm), fully vibrating to discharge gas in the mortar, arranging 3 groups of optical fibers into an elliptical shape on each layer (the radius of the long axis and the short axis is respectively 25cm multiplied by 12cm, 18cm multiplied by 8cm and 10cm multiplied by 5cm), and then continuously pouring until the material mold is finished and the surface of the material is leveled;
and seventhly, after curing for 2 days, removing the mold, taking out the test piece, and marking the test piece to finish the manufacture of the test piece.
The high-strength gel of S202a and S203a comprises the following components in percentage by weight:
35% of hydrogenated nitrile rubber, 30% of phenolic resin, 25% of epoxy resin, 5% of plasticizer, 4.5% of reinforcing agent and 0.5% of anti-aging agent;
the preparation method of the high-strength gel comprises the following steps:
according to the proportion, the hydrogenated nitrile rubber is put into a rubber mixing mill and processed into particles (the particle size is 3 mm), then the rubber mixing mill is heated to 160 ℃, then the phenolic resin, the plasticizer, the reinforcing agent and the anti-aging agent are put into the rubber mixing mill, the temperature of the rubber mixing mill is reduced to 140 ℃, the epoxy resin is added to obtain high-strength gel, the high-strength gel is poured into a heat-preservation water bath kettle for standby, and the water bath temperature is kept between 90 ℃ and 100 ℃.
Wherein the plasticizer is one or a mixture of more of phthalate, adipate, azelate, sebacate, stearate, phosphate and glycerol; the reinforcing agent is carbon black or white carbon black; the epoxy resin is high-viscosity long-chain molecular epoxy resin; the anti-aging agent is 4010NA or RD.
The recipe fluid of the saturation station 11 and the recipe fluid of S202b have the same composition, and the preparation method thereof is as follows:
taking the formation water of the target simulated formation as standard formation water, detecting mineral salt components of the standard formation water, and carrying out an ion concentration test;
taking deionized water, sodium chloride and mineral salt with the same composition as that of the mineral salt of standard formation water, and uniformly mixing to obtain an initial formula fluid;
and carrying out an ion concentration test on the initial formula fluid, carrying out similarity comparison on the initial formula fluid and the ion concentration of standard formation water, if the similarity of various ion concentrations reaches more than 95%, sealing and retaining the initial formula fluid as a final formula fluid for later use, otherwise carrying out secondary blending on the initial formula fluid until the similarity reaches 95%.
It can be seen that, in this embodiment, instead of directly preparing the formulated fluid, the formulated fluid is obtained by first obtaining the formation water of the target simulated formation, that is, obtaining the real formation water, then detecting the mineral salts in the real formation water and performing the ion concentration test on the mineral salts, weighing the same mineral salts as the components to mix with the deionized water and the sodium chloride to prepare the formulated fluid to be used, when weighing the raw materials, several groups of mixtures with different proportions may be made, and the ion concentration test is performed on each group of mixtures, selecting the formulation closest to the real formation water, and using the formulated fluid prepared according to the formula with the proportion as the formulated fluid of the saturated liquid station 11 and the formulated fluid of S202b.
Sixth embodiment:
on the basis of the fourth embodiment, the starting of the formation simulation system of S003 specifically includes:
s301, starting an electromagnetic induction heating device 12, and heating the physical model test piece 20 to a target simulated formation temperature by using an electromagnetic heating ring;
s302, starting a vacuum pump 13, and vacuumizing the physical model test piece 20 for 72 hours by using the vacuum pump 13;
s303, maintaining the temperature of the target simulated formation, and conveying the formula fluid to the transparent sealing box 9 by the saturated liquid station 11;
s304, pressurizing the physical model test piece 20 to a target simulated formation pressure by using the hand-operated pump 15, and enabling the physical model test piece 20 to be saturated for 120 hours.
The gas phase state conversion system of S006 specifically includes:
opening the gas source 1, and delivering gas to the cooling device 3 by the gas source 1;
closing a valve 4 between the gas source 1 and the cooling device 3, and cooling the compressed gas into liquid by the cooling device 3;
and starting the injection pump 2, and pushing the liquid in the cooling device 3 to be conveyed into the transparent sealing box 9 through the heat preservation pipeline 5 by the injection pump 2.
S006' S fracturing fluid injection system specifically includes:
starting a first automatic booster pump 601, pumping the low-viscosity fracturing fluid in the low-viscosity fracturing fluid storage tank 7 to a transparent seal box 9, and utilizing the low-viscosity fracturing fluid to fracture the specimen mold test piece 20;
or, the second automatic booster pump 602 is started, the high-viscosity fracturing fluid in the high-viscosity fracturing fluid storage tank 8 is pumped to the transparent sealing box 9, and the object model test piece 20 is fractured by the high-viscosity fracturing fluid.
It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples for carrying out the invention, and that various changes in form and details may be made therein without departing from the spirit and scope of the invention in practice.
Claims (14)
1. The utility model provides a visual energy storage fracturing physical simulation test device, includes transparent seal box (9), thing mould test piece (20) have been put to the inner chamber of transparent seal box (9), and thing mould test piece (20) are embedded to have simulation pit shaft (10), its characterized in that: a first distributed monitoring optical fiber (17) is attached to the outer wall of the simulated shaft (10), and a plurality of second distributed monitoring optical fibers (18) laid around the simulated shaft (10) are packaged in the object model test piece (20), wherein the structure of the first distributed monitoring optical fiber (17) is the same as that of the second distributed monitoring optical fibers (18), and the first distributed monitoring optical fibers and the second distributed monitoring optical fibers are used for monitoring temperature and sound waves;
and a gas phase-state conversion system, a fracturing fluid injection system and a stratum simulation system are arranged outside the transparent seal box (9), and the three systems all extend into the transparent seal box (9) through pipelines.
2. The visual energy storage fracturing physical simulation test device of claim 1, wherein: the gas phase-state conversion system comprises a cooling device (3), an inlet of the cooling device (3) is communicated with a gas source (1) and an injection pump (2) which are connected in parallel, and an outlet of the cooling device (3) is connected into a transparent sealing box (9) through a heat-insulating pipeline (5).
3. The visual energy storage fracturing physical simulation test device of claim 1, wherein: the fracturing fluid injection system is provided with at least two paths of liquid conveying pipelines which are respectively a low-viscosity pipeline for conveying low-viscosity fracturing fluid and a high-viscosity pipeline for conveying high-viscosity fracturing fluid;
the low-viscosity pipeline comprises a low-viscosity fracturing fluid storage tank (7), an inlet of the low-viscosity fracturing fluid storage tank (7) is connected with a first automatic booster pump (601), and an outlet of the low-viscosity fracturing fluid storage tank (7) extends into the transparent sealing box (9) through the pipeline;
the high-viscosity pipeline comprises a high-viscosity fracturing fluid storage tank (8), an inlet of the high-viscosity fracturing fluid storage tank (8) is connected with a second automatic booster pump (602), and an outlet of the high-viscosity fracturing fluid storage tank (8) extends into the transparent sealing box (9) through the pipeline.
4. The visual energy storage fracturing physical simulation test device of claim 1, wherein: the stratum simulation system comprises a saturated liquid station (11) for storing simulated stratum water, an electromagnetic induction heating device (12) for simulating the stratum temperature, a vacuum pump (13) for vacuumizing an object model test piece (20) and a hand pump (15) for simulating the stratum pressure, wherein:
the saturated liquid station (11) conveys the formula fluid to the transparent seal box (9) through a pipeline;
the electromagnetic induction heating device (12) comprises a high-frequency alternating current power supply, the high-frequency alternating current power supply is connected with an electromagnetic heating coil, and the electromagnetic heating coil is uniformly distributed at intervals and is wound and attached to the inner wall of the transparent sealing box (9);
a vacuum pump (13) extends into the transparent sealing box (9) through a pipeline;
the hand pump (15) extends into the transparent sealing box (9) through a pipeline.
5. The visual energy storage fracturing physical simulation test device of claim 4, wherein: the monitoring system further comprises an upper computer (16), and the first distributed monitoring optical fiber (17) and the second distributed monitoring optical fiber (18) are respectively electrically connected to the upper computer (16);
the outside of transparent seal box (9) is equipped with pressure gauge (19) that are used for monitoring the barrel internal pressure of simulation pit shaft (10) and are used for monitoring thing mould test piece (20) pressure, pressure gauge (14) have concatenated on the pipeline between hand pump (15) and thing mould test piece (20), and pressure gauge (14) and pressure gauge (19) electricity respectively connect in host computer (16).
6. The visual energy storage fracturing physical simulation test device of claim 4, wherein: the object model test piece (20) is cuboid, the number of the hand pumps (15) is at least three, and the three hand pumps (15) respectively pressurize three mutually vertical surfaces of the cuboid object model test piece (20) through three pipelines.
7. The visual energy storage fracturing physical simulation test device of claim 1, wherein: a plurality of second distributed monitoring optical fibers (18) laid around the simulation shaft (10) are sealed in the object model test piece (20), and the method specifically comprises the following steps:
a plurality of layers of second distributed monitoring optical fibers (18) are arranged along the central axis of the simulation shaft (10) from bottom to top, and the second distributed monitoring optical fibers (18) of each layer are laid in the object model test piece (20) in a concentric ring shape.
8. A visual energy storage fracturing physical simulation test method is characterized by at least comprising the visual energy storage fracturing physical simulation test device as claimed in any one of claims 1-7, and comprises the following specific steps:
s001, placing a standard test piece in a transparent sealing box (9), performing test operation on the visual energy storage fracturing physical simulation test device, and performing the next step if the operation is normal;
s002, taking out the standard test piece, and putting the physical model test piece (20) into a transparent sealing box (9);
s003, starting a stratum simulation system, simulating the temperature of the stratum, and vacuumizing the transparent sealing box (9);
s004, keeping the temperature of the simulated formation, and injecting saturated liquid into the transparent sealing box (9) from a saturated liquid station (11);
s005, collecting temperature data and sound wave data of a simulation shaft (10) by using a first distributed monitoring optical fiber (17), simultaneously collecting temperature data and sound wave data inside an object model test piece (20) by using a second distributed monitoring optical fiber (18), and adjusting a stratum simulation system until the temperature data collected by the two groups of distributed monitoring optical fibers reach uniform temperature;
s006, start gaseous phase state transition system and fracturing fluid injection system, carry out the fracturing to thing mould test piece (20), record pressure data, temperature field and the acoustic wave signal in the fracturing process, realize the monitoring to the fracturing process.
9. The physical simulation test method for visual energy storage fracturing as claimed in claim 8, wherein the object model test piece (20) of S002 is divided into two types, i.e. outcrop rock sample and artificial sample, wherein the outcrop rock sample is selected as the object model test piece (20) and the specific application is as follows:
s201a, processing a outcrop rock sample with a preset size;
s202a, forming a first hole in the center of the top of the outcrop rock sample, inserting a simulation shaft (10) with a cylinder wall attached with a first distributed monitoring optical fiber (17) into the first hole, pushing high-strength gel to a gap between the cylinder wall and the first hole by using an injector, and sealing the gap;
s203a, a plurality of layers of annular pore canals are formed in the side wall of the outcrop rock sample from bottom to top along the central axis of the simulation shaft (10), the central axis of each annular pore canal is overlapped with the central axis of the simulation shaft (10), a second distributed monitoring optical fiber (18) is laid in each layer of annular pore canal, high-strength gel is pushed into the annular pore canals by an injector, and gaps in the annular pore canals are closed;
s204a, maintaining for 24 hours, and finishing the manufacture of the physical model test piece (20);
or, selecting an artificial sample as the object model test piece (20), and the specific application is as follows:
s201b, acquiring three-dimensional ground stress, rock mechanical parameters and physical parameters of the target simulated stratum;
s202b, weighing portland cement, quartz sand, a formula fluid and a binder, uniformly mixing the materials according to different proportions to prepare a plurality of simulated cylinders, and labeling;
s203b, testing the rock mechanical parameters and physical parameters of each simulation cylinder, comparing the rock mechanical parameters and physical parameters with the rock mechanical parameters and physical parameters of a target simulation stratum, and if the coincidence rate is higher than 90%, preparing an artificial sample by using the component proportion of the labeled simulation cylinder;
s204b, assembling a mold for preparing an artificial sample, wherein the mold is the same as the artificial sample in size, placing a simulation shaft (10) in the center of the mold, and fixing a first distributed monitoring optical fiber (17) on the outer cylinder wall of the simulation shaft (10);
s205b, mixing quartz sand, a formula fluid and a binder according to the proportion of each component of the simulation cylinder determined in the step S203b, uniformly mixing, slowly injecting the mixture into a mold at a constant speed, stopping injecting when the mixture reaches the height of a preset first layer of second distributed monitoring optical fibers (18), sufficiently vibrating, laying a second layer of second distributed monitoring optical fibers (18), continuously pouring, repeating for many times until all the second distributed monitoring optical fibers (18) are laid, and continuously pouring and leveling the surface of the mold;
s206b, maintaining for two days, dismantling the mold, and taking out the artificial sample to finish the manufacture of the physical model test piece (20).
10. The physical simulation test method for visual energy storage fracturing as claimed in claim 9, wherein the high strength gel of S202a and S203a is composed of the following components by weight percentage:
35% of hydrogenated nitrile rubber, 30% of phenolic resin, 25% of epoxy resin, 5% of plasticizer, 4.5% of reinforcing agent and 0.5% of anti-aging agent;
the preparation method of the high-strength gel comprises the following steps:
according to the proportion, the hydrogenated nitrile rubber is put into a rubber mixing mill and processed into particles, then the rubber mixing mill is heated to 160 ℃, then the phenolic resin, the plasticizer, the reinforcing agent and the anti-aging agent are put into the rubber mixing mill, the temperature of the rubber mixing mill is reduced to 140 ℃, the epoxy resin is added into the rubber mixing mill to obtain high-strength gel, the high-strength gel is poured into a heat-preservation water bath for standby, and the water bath temperature is kept between 90 ℃ and 100 ℃.
11. The physical simulation test method for visual energy storage fracturing as claimed in claim 9, wherein the formula fluid of the saturated liquid station (11) and the formula fluid of S202b have the same composition, and the preparation method comprises the following steps:
taking the formation water of the target simulated formation as standard formation water, detecting mineral salt components of the standard formation water, and carrying out an ion concentration test;
taking deionized water, sodium chloride and mineral salt with the same composition as that of the mineral salt of standard formation water, and uniformly mixing to obtain an initial formula fluid;
and carrying out an ion concentration test on the initial formula fluid, carrying out similarity comparison on the initial formula fluid and the ion concentration of standard formation water, if the similarity of various ion concentrations reaches more than 95%, sealing and retaining the initial formula fluid as a final formula fluid for later use, otherwise carrying out secondary blending on the initial formula fluid until the similarity reaches 95%.
12. The physical simulation test method for visual energy storage fracturing as claimed in claim 8, wherein the starting of the formation simulation system of S003 specifically comprises:
s301, starting an electromagnetic induction heating device (12), and heating the physical model test piece (20) to a target simulated formation temperature by using an electromagnetic heating ring;
s302, starting a vacuum pump (13), and vacuumizing the physical model test piece (20) for 72 hours by using the vacuum pump (13);
s303, keeping the temperature of the target simulated formation, and conveying the formula fluid to a transparent sealing box (9) by a saturated liquid station (11);
s304, pressurizing the physical model test piece (20) to a target simulated formation pressure by using a hand-operated pump (15), and enabling the physical model test piece (20) to be saturated for 120 hours.
13. The physical simulation test method for visual energy storage fracturing as claimed in claim 8, wherein the gas phase-to-phase conversion system of S006 specifically comprises:
opening the gas source (1), and conveying gas to the cooling device (3) by the gas source (1);
closing a valve (4) between the gas source (1) and the cooling device (3), and cooling the compressed gas into liquid by the cooling device (3);
and starting the injection pump (2), and driving the liquid in the cooling device (3) to be conveyed into the transparent sealing box (9) through the heat-insulating pipeline (5) by the injection pump (2).
14. The physical simulation test method for visual energy storage fracturing as claimed in claim 8, wherein the fracturing fluid injection system of S006 specifically comprises:
starting a first automatic booster pump (601), pumping low-viscosity fracturing fluid in a low-viscosity fracturing fluid storage tank (7) to a transparent seal box (9), and fracturing a physical model test piece (20) by using the low-viscosity fracturing fluid;
or starting a second automatic booster pump (602), pumping the high-viscosity fracturing fluid in the high-viscosity fracturing fluid storage tank (8) to a transparent sealing box (9), and fracturing the physical model test piece (20) by using the high-viscosity fracturing fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081753.1A CN112485120B (en) | 2020-10-12 | 2020-10-12 | Visual energy storage fracturing physical simulation test device and test method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011081753.1A CN112485120B (en) | 2020-10-12 | 2020-10-12 | Visual energy storage fracturing physical simulation test device and test method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112485120A true CN112485120A (en) | 2021-03-12 |
| CN112485120B CN112485120B (en) | 2023-07-25 |
Family
ID=74926753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011081753.1A Active CN112485120B (en) | 2020-10-12 | 2020-10-12 | Visual energy storage fracturing physical simulation test device and test method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112485120B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986287A (en) * | 2021-04-15 | 2021-06-18 | 中国科学院地质与地球物理研究所 | Ultrahigh-pressure nonmetal core holder |
| CN114278263A (en) * | 2021-12-23 | 2022-04-05 | 中国石油大学(北京) | Method for efficiently developing deep geothermal reservoir through liquid nitrogen circulating fracturing |
| CN116181301A (en) * | 2023-03-08 | 2023-05-30 | 中国石油大学(北京) | Simulation method and simulation system for fracturing multi-joint interference of three-dimensional well pattern of horizontal well |
| CN116399899A (en) * | 2023-06-08 | 2023-07-07 | 中南大学 | Molten drop sub-fast solidification high-flux test substrate and use method thereof |
| CN117489317A (en) * | 2023-12-29 | 2024-02-02 | 克拉玛依市白碱滩区(克拉玛依高新区)石油工程现场(中试)实验室 | Mining site-level carbon dioxide fracturing fluid simulation experiment device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266888A (en) * | 2013-05-21 | 2013-08-28 | 中国石油大学(华东) | System and method for visualization fracturing simulation experiment |
| CN106907138A (en) * | 2017-04-10 | 2017-06-30 | 西南石油大学 | Pressure break horizontal well crack Diagnosis analogue experiment installation and its method of the one kind based on distributed optical fiber temperature measurement (DTS) |
| CN108952698A (en) * | 2018-07-10 | 2018-12-07 | 中国石油大学(北京) | Crack shearing slip measuring method |
| CN109372571A (en) * | 2018-11-19 | 2019-02-22 | 山东大学 | Coal containing methane gas is anti-reflection, displacement and multiphase porous flow physical simulation experiment System and method for |
| CN110029987A (en) * | 2019-05-26 | 2019-07-19 | 西南石油大学 | A kind of two-phase gas reservoir pressure break horizontal well temperature profile imitative experimental appliance and its method |
| CN110541702A (en) * | 2019-10-14 | 2019-12-06 | 中油奥博(成都)科技有限公司 | underground fluid distribution monitoring system and method based on distributed optical fiber sensing |
| US20200284109A1 (en) * | 2016-03-01 | 2020-09-10 | Schlumberger Technology Corporation | Method and model for wellbore strengthening by filtercake |
-
2020
- 2020-10-12 CN CN202011081753.1A patent/CN112485120B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266888A (en) * | 2013-05-21 | 2013-08-28 | 中国石油大学(华东) | System and method for visualization fracturing simulation experiment |
| US20200284109A1 (en) * | 2016-03-01 | 2020-09-10 | Schlumberger Technology Corporation | Method and model for wellbore strengthening by filtercake |
| CN106907138A (en) * | 2017-04-10 | 2017-06-30 | 西南石油大学 | Pressure break horizontal well crack Diagnosis analogue experiment installation and its method of the one kind based on distributed optical fiber temperature measurement (DTS) |
| CN108952698A (en) * | 2018-07-10 | 2018-12-07 | 中国石油大学(北京) | Crack shearing slip measuring method |
| CN109372571A (en) * | 2018-11-19 | 2019-02-22 | 山东大学 | Coal containing methane gas is anti-reflection, displacement and multiphase porous flow physical simulation experiment System and method for |
| CN110029987A (en) * | 2019-05-26 | 2019-07-19 | 西南石油大学 | A kind of two-phase gas reservoir pressure break horizontal well temperature profile imitative experimental appliance and its method |
| CN110541702A (en) * | 2019-10-14 | 2019-12-06 | 中油奥博(成都)科技有限公司 | underground fluid distribution monitoring system and method based on distributed optical fiber sensing |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112986287A (en) * | 2021-04-15 | 2021-06-18 | 中国科学院地质与地球物理研究所 | Ultrahigh-pressure nonmetal core holder |
| CN114278263A (en) * | 2021-12-23 | 2022-04-05 | 中国石油大学(北京) | Method for efficiently developing deep geothermal reservoir through liquid nitrogen circulating fracturing |
| CN114278263B (en) * | 2021-12-23 | 2022-11-29 | 中国石油大学(北京) | Method for efficiently developing deep geothermal reservoir through liquid nitrogen circulating fracturing |
| CN116181301A (en) * | 2023-03-08 | 2023-05-30 | 中国石油大学(北京) | Simulation method and simulation system for fracturing multi-joint interference of three-dimensional well pattern of horizontal well |
| CN116181301B (en) * | 2023-03-08 | 2023-09-19 | 中国石油大学(北京) | Simulation method and simulation system for fracturing multi-joint interference of three-dimensional well pattern of horizontal well |
| CN116399899A (en) * | 2023-06-08 | 2023-07-07 | 中南大学 | Molten drop sub-fast solidification high-flux test substrate and use method thereof |
| CN116399899B (en) * | 2023-06-08 | 2023-08-29 | 中南大学 | Molten drop sub-fast solidification high-flux test substrate and use method thereof |
| CN117489317A (en) * | 2023-12-29 | 2024-02-02 | 克拉玛依市白碱滩区(克拉玛依高新区)石油工程现场(中试)实验室 | Mining site-level carbon dioxide fracturing fluid simulation experiment device and method |
| CN117489317B (en) * | 2023-12-29 | 2024-03-22 | 克拉玛依市白碱滩区(克拉玛依高新区)石油工程现场(中试)实验室 | Mining site-level carbon dioxide fracturing fluid simulation experiment device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112485120B (en) | 2023-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112485120B (en) | Visual energy storage fracturing physical simulation test device and test method thereof | |
| US11150232B2 (en) | Laboratory device and method for simulating cement sheath consolidation in frozen soil strata | |
| CN108801799B (en) | Rock fracturing physical simulation system and test method | |
| CN110220834B (en) | Triaxial seepage test method for visual single-fracture rock stress-seepage coupling sample | |
| CN110924933A (en) | Visual experiment method for dynamically simulating shale fracturing fracture network | |
| CN112665947B (en) | Acoustic monitoring device and method for rock damage in freeze-thaw-dry-wet environment | |
| CN109142192A (en) | Visualization abnormity well cementation second interface bonding quality and obform body strength test system | |
| CN110005400B (en) | Device for testing cementing surface of shaft sleeve and cement sheath in high-temperature and high-pressure environment of dry-hot rock stratum | |
| CN112268768B (en) | Similar simulation test system and method for unloading of vertical shaft slit type grouting curtain excavation | |
| CN104535727B (en) | A kind of waterpower sandfrac system | |
| AU2020101248A4 (en) | A Preparation Device for Compressive Pre-stress Artificial Core | |
| CN109001040B (en) | Rock fracturing simulator | |
| CN210660065U (en) | High-simulation well cementation bonding strength joint test auxiliary device | |
| CN110056335B (en) | Triaxial multi-crack hydraulic fracturing experimental device and experimental method | |
| CN111141606A (en) | Sample internal detection unit for fractured rock mass test and use method | |
| CN114414326A (en) | Rock sample making and experiment method for interference of natural fracture network on hydraulic fracture | |
| CN113063664B (en) | Device and method for testing tensile bond strength of first interface of well cementation cement sheath of oil-gas well | |
| CN116411959A (en) | Oil-gas well fracturing test device and method for simulating real stratum environment | |
| CN210087307U (en) | Device for testing cementing surface of shaft sleeve-cement sheath in high-temperature and high-pressure environment of dry hot rock stratum | |
| CN209838386U (en) | Hydraulic fracturing physical simulation experiment device | |
| WO2020048186A2 (en) | 3d printing-based complex fractal fracture multi-coupling seepage experiment system and method | |
| CN113758807B (en) | Cross-scale fractured rock mass hydraulic coupling visualization test method | |
| CN113155640B (en) | High-temperature rock mass fracture shearing seepage heat exchange test system | |
| CN109681164B (en) | Device for simulating casing damage process | |
| CN113236240A (en) | High-temperature temporary blocking steering indoor true triaxial physical model experiment equipment and method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |