CN106677771B - Simulation experiment device for enhanced geothermal system and method for evaluating pore-type sandstone thermal storage reconstruction by using simulation experiment device - Google Patents
Simulation experiment device for enhanced geothermal system and method for evaluating pore-type sandstone thermal storage reconstruction by using simulation experiment device Download PDFInfo
- Publication number
- CN106677771B CN106677771B CN201611068309.XA CN201611068309A CN106677771B CN 106677771 B CN106677771 B CN 106677771B CN 201611068309 A CN201611068309 A CN 201611068309A CN 106677771 B CN106677771 B CN 106677771B
- Authority
- CN
- China
- Prior art keywords
- shaft
- injection
- prefabricated
- temperature
- rock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004088 simulation Methods 0.000 title claims abstract description 67
- 238000003860 storage Methods 0.000 title claims abstract description 50
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000011435 rock Substances 0.000 claims abstract description 133
- 238000002347 injection Methods 0.000 claims abstract description 84
- 239000007924 injection Substances 0.000 claims abstract description 84
- 238000004519 manufacturing process Methods 0.000 claims abstract description 73
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000011148 porous material Substances 0.000 claims abstract description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 88
- 229910052742 iron Inorganic materials 0.000 claims description 44
- 238000011161 development Methods 0.000 claims description 42
- 238000000605 extraction Methods 0.000 claims description 31
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 30
- 238000011084 recovery Methods 0.000 claims description 24
- 239000006004 Quartz sand Substances 0.000 claims description 20
- 238000002474 experimental method Methods 0.000 claims description 16
- 230000035699 permeability Effects 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 238000005485 electric heating Methods 0.000 claims description 11
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 10
- 239000004927 clay Substances 0.000 claims description 10
- 239000010433 feldspar Substances 0.000 claims description 10
- 239000010453 quartz Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 244000035744 Hura crepitans Species 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 5
- 230000009466 transformation Effects 0.000 abstract description 12
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005338 heat storage Methods 0.000 description 21
- 238000010586 diagram Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 238000009826 distribution Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000011156 evaluation Methods 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000000977 initiatory effect Effects 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 238000009417 prefabrication Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T10/00—Geothermal collectors
- F24T10/20—Geothermal collectors using underground water as working fluid; using working fluid injected directly into the ground, e.g. using injection wells and recovery wells
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
- E21B47/07—Temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24T—GEOTHERMAL COLLECTORS; GEOTHERMAL SYSTEMS
- F24T2201/00—Prediction; Simulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Hydrology & Water Resources (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geophysics (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a simulation experiment device for an enhanced geothermal system and a method for evaluating pore sandstone thermal storage transformation by using the same, wherein the simulation experiment device comprises the following components: a heat exchange chamber; an inlet and an outlet which is arranged corresponding to the inlet are formed in the heat exchange chamber, the inlet and the outlet are communicated with the cavity, and the number of the outlets is two; the prefabricated rock block is placed in the cavity, an injection shaft, a first production shaft and a second production shaft are further arranged in the prefabricated rock block, the injection shaft is located between the first production shaft and the second production shaft, the injection shaft is communicated with the inlet, the first production shaft and the second production shaft are respectively communicated with the two outlets, and a preset gap, a miniature pressure sensor and a miniature temperature sensor are arranged in the prefabricated rock block; an electrical heating plate; a constant temperature liquid supply tank; two liquid collecting tanks; and a horizontal ground stress simulator.
Description
Technical Field
The invention relates to the technical field of geothermal energy, in particular to a simulation experiment device for an enhanced geothermal system and a method for evaluating pore sandstone thermal storage transformation by using the simulation experiment device.
Background
Fossil energy is a hydrocarbon or its derivative, which is currently the most dominant energy consumed worldwide. However, the environmental problems caused by the utilization of traditional fossil energy are more serious and even threaten the health and living environment of human beings, so that the enhancement of the development and utilization of renewable clean energy is very important.
The geothermal energy is not affected by weather, is stable and has rich resources compared with solar energy and wind energy, and is divided into low-temperature heat storage (lower than 90 ℃), medium-temperature heat storage (90-150 ℃) and high-temperature heat storage (higher than 150 ℃) according to different reservoir temperatures. Medium and low temperature heat storage is generally shallow in buried depth, good in permeability and small in development difficulty, is often directly utilized for heat preservation, heating, hot springs, medical treatment and the like, and high temperature heat storage is generally characterized by large buried depth, high temperature, poor permeability, rich reserves, almost no fluid in a reservoir layer and large development difficulty, and is often indirectly used for power generation.
At present, China develops geothermal systems at medium and low temperatures on a large scale, but the continuous reduction of heat storage pressure is caused by long-term extensive development and utilization, so that the sustainable development of geothermal resources is restricted. In sedimentary basin geothermal systems, pore sandstone thermal storage is an important type of thermal storage. The development of sustainable development mode research aiming at the characteristics of high pore and high permeability of a sandstone medium-low temperature geothermal system and the development of enhanced geothermal system reservoir modification and sustainable development mode research aiming at the characteristics of low pore and low permeability of a sandstone high-temperature geothermal system are particularly important.
Disclosure of Invention
The invention provides a simulation experiment device for an enhanced geothermal system and a method for evaluating pore sandstone thermal storage reconstruction by using the simulation experiment device, solves the technical problem of how to perform sandstone thermal storage heat recovery evaluation and temperature recovery experiments under different well types, different well patterns, different well distances and different crack expansion areas, and realizes the technical effect of freely switching the crack expansion experiment, the heat recovery evaluation experiment and the temperature recovery experiment.
In order to solve the above technical problem, the present invention provides a simulation experiment apparatus for an enhanced geothermal system, the simulation experiment apparatus comprising:
a heat exchange chamber forming a closed chamber; an inlet and an outlet which is arranged corresponding to the inlet are formed in the heat exchange chamber, the inlet and the outlet are communicated with the cavity, and the number of the outlets is two;
the prefabricated rock block is placed in the cavity, an injection shaft, a first production shaft and a second production shaft are further arranged in the prefabricated rock block, the injection shaft is located between the first production shaft and the second production shaft, the injection shaft is communicated with the inlet, the first production shaft and the second production shaft are respectively communicated with the two outlets, and a preset gap is formed in the prefabricated rock block;
the electric heating plate is attached to the outer surface of the heat exchange chamber;
the constant-temperature liquid supply tank penetrates through the inlet through a first pipeline and is communicated with the injection shaft;
the two liquid collecting grooves respectively penetrate through the two outlets and are respectively communicated with the first production shaft and the second production shaft;
a high pressure plunger pump disposed in the first conduit;
the horizontal stress simulation devices are uniformly distributed on the outer surfaces of the heat exchange chambers.
Preferably, the simulation experiment device further comprises a micro temperature sensor and/or a micro pressure sensor, and the micro temperature sensor and/or the micro pressure sensor are embedded in the prefabricated rock block.
Preferably, the simulation experiment device further comprises a heat insulation layer, and the heat insulation layer is paved on the periphery of the heat exchange chamber.
Preferably, the simulation experiment device further comprises a waterproof sealing plug, the waterproof sealing plug is arranged in the cavity, and the waterproof sealing plug is arranged around the periphery of the prefabricated rock block.
Preferably, the injection shaft, the first production shaft and the second production shaft are all made of iron pipes and hard plastic pipes, wherein the inner diameter of each iron pipe is 0.01-0.03m, and the length of each iron pipe is 0.2-0.4 m; the diameter of the hard plastic pipe is 0.01-0.03m, the length of the hard plastic pipe is 0.1-0.6m, and the iron pipe is exposed in the prefabricated rock block by 5-6cm and serves as an injection and production pipeline interface.
Preferably, the simulation experiment device further comprises a first temperature sensor, a second temperature sensor, a first pressure sensor and a second pressure sensor, wherein the first temperature sensor and the first pressure sensor are connected in series between the inlet and the high-pressure plunger pump, and the second temperature sensor and the second pressure sensor are connected in series between the outlet and the liquid collecting tank.
Based on the same inventive concept, the application also provides a method for evaluating the pore type sandstone heat storage reformation by using the simulation experiment device, and the method comprises the following steps:
according to a shaft in the well-type prefabricated rock block in the pore-type sandstone thermal storage, the shaft is made of an iron pipe and a hard plastic pipe;
prefabricating a rock block by adopting quartz sand with a preset mesh number and quartz, feldspar, carbonate and clay according to a certain ratio, and placing a filter screen in the quartz sand to form the prefabricated rock block with cracks;
placing the rock mass in a heat exchange chamber of the simulated experiment apparatus;
controlling the temperature of the prefabricated rock block in the heat exchange chamber to reach a preset temperature, and preserving heat at the preset temperature, wherein the preset temperature is 120-300 ℃;
adjusting a horizontal ground stress simulation device;
adjusting the injection flow, and obtaining the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack;
and after the thermal storage is developed for a period of time, the high-pressure plunger pump is closed, and the temperature recovery conditions of the rock blocks and the cracks are observed.
Preferably, when the well type in the pore type sandstone thermal storage is a horizontal well pattern and particularly one-injection two-extraction, the length of the iron pipe is 0.45m, and the inner diameter of the iron pipe is 0.02 m; the hard plastic pipe is 0.4m long and 0.02m in outer diameter; digging a large area of holes on the pipe wall of the hard plastic pipe to simulate open hole well completion, inserting the hard plastic pipe into the iron pipe, and fixing; the preset temperature is 120 ℃.
Preferably, the adopted quartz sand with a preset mesh number is used for prefabricating the rock block according to quartz, feldspar, carbonate and clay with a certain ratio, and the filter screen is placed in the quartz sand to form the rock block with cracks, which specifically comprises the following steps:
selecting the mesh number of quartz sand according to the permeability of the required rock, manufacturing sandstone rock blocks in an iron sand box with the size of 1.2m, 1.2m in width and 0.8m in height according to the mixture ratio of 52% of quartz, 30% of feldspar, 2% of carbonate and 16% of clay, controlling the well spacing to be 0.4m, exposing 5-6cm of an iron pipe in the prefabricated rock as an injection-production pipeline interface, and placing the manufactured sandstone rock blocks in the sun for curing for 28 days to form the rock blocks.
Preferably, the injection flow is adjusted, specifically, the injection flow is controlled to be set to 0.5 l/min.
The beneficial effect of this application is as follows:
the invention provides a simulation experiment device for an enhanced geothermal system and a method for evaluating pore sandstone thermal storage transformation by utilizing the simulation experiment device, which is a physical simulation experiment device for researching the temperature and pressure spatial and temporal distribution monitoring of a thermal production process, the temperature recovery after a period of thermal production, the heat energy extraction efficiency, the stable production time and the accumulated thermal production quantity under different stress states, different well types, different well completion modes, different well arrangement modes and different reservoir transformation modes and different fracture expansion areas of pore sandstone thermal storage in the forms of a prefabricated well type, a well pattern and a fracture, can simulate a vertical well, a horizontal well and an inclined well by changing the placement mode of a prefabricated shaft in a prefabricated rock block, can simulate the injection and production well distance by changing the distance of a prefabricated injection and production shaft, and can simulate perforation well completion and open hole well completion in large area by prefabricating perforation and open hole perforation in a part of a hard plastic pipe, different injection-production well patterns can be simulated by changing the number of placed injection-production well shafts, including one injection and one production, one injection and two production, one injection and four production and the like; the device can simulate different heat storage transformation modes by using the filter screen to prefabricate cracks in the prefabricated rock, and the influence of the existence of horizontal well staged fracturing, vertical well fracturing, volume fracturing and natural cracks on heat storage development can be simulated by increasing or decreasing the number of layers of the filter screen.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced, and it is apparent that the drawings in the following description are only some embodiments of the present invention;
FIG. 1 is a schematic diagram of a simulation experiment device for an enhanced geothermal system according to a preferred embodiment of the present application;
fig. 2 is a schematic flow chart of a method for evaluating pore type sandstone thermal storage modification by using the simulation experiment device shown in fig. 1;
fig. 3 is a schematic structural diagram of a prefabricated rock block when a hole type sandstone thermal storage development mode is a horizontal well one-injection two-extraction mode and a thermal storage reconstruction mode is horizontal well staged fracturing (two cracks) with a well spacing of 0.4m in the simulation experiment device in fig. 1 of the application;
fig. 4 is a schematic structural diagram of a prefabricated rock block when a hole type sandstone thermal storage development mode is a horizontal well one-injection two-extraction mode and a thermal storage reconstruction mode is horizontal well staged fracturing (two cracks) with a well spacing of 0.5m in the simulation experiment device in fig. 1 of the application;
fig. 5 is a schematic structural diagram of the prefabricated rock block when the simulated experimental device in fig. 1 simulates a pore-type sandstone thermal storage development mode of horizontal well one-injection two-extraction, and the thermal storage reconstruction mode is horizontal well staged fracturing, four fractures and the fracture distance is 0.05 m;
fig. 6 is a schematic structural diagram of the prefabricated rock block when the simulated experimental device in fig. 1 simulates a pore-type sandstone thermal storage development mode of horizontal well one-injection two-extraction, and the thermal storage reconstruction mode is horizontal well staged fracturing, four fractures and the fracture distance is 0.1 m;
fig. 7 is a schematic structural diagram of the prefabricated rock block when the simulation experiment device in fig. 1 simulates a pore-type sandstone thermal storage development mode of horizontal well one-injection two-extraction, and the thermal storage reconstruction mode is horizontal well staged fracturing, six fractures and the fracture spacing is 0.05 m;
fig. 8 is a schematic structural diagram of the prefabricated rock block with a fracture half-length of 0.2m, in which a simulation experiment device in fig. 1 of the present application simulates a pore-type sandstone thermal storage development mode of vertical well one-injection two-extraction, and the modification mode is fracturing at an injection well;
fig. 9 is a schematic structural diagram of the simulation experiment device in fig. 1, wherein the simulation pore type sandstone thermal storage development mode is a vertical well one-injection two-extraction mode, the modification mode is fracturing at an injection well, and the prefabricated rock block is when the half length of a fracture is 0.55 m;
100-simulation experiment device for enhanced geothermal system, 1-heat exchange chamber, 2-prefabricated rock block, 21-injection shaft, 22-first production shaft, 23-second production shaft, 3-electric heating plate, 4-constant temperature liquid supply tank, 5-liquid collection tank, 6-high pressure plunger pump, 7-horizontal ground stress simulation device, 8-miniature temperature sensor, 9-miniature pressure sensor, 10-insulating layer, 11-first temperature sensor, 12-first pressure sensor, 13-second temperature sensor, 14-second pressure sensor, 15-flowmeter 15, 16-computer and 17-temperature control device.
Detailed Description
The embodiment of the application provides a simulation experiment device for an enhanced geothermal system and a method for evaluating pore sandstone thermal storage transformation by using the simulation experiment device, solves the technical problems of how to perform sandstone thermal storage heat production evaluation and temperature recovery experiments under different well types, different well patterns, different well distances and different fracture expansion areas, and realizes the technical effects of free switching of fracture expansion experiments, heat production evaluation experiments and temperature recovery experiments.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
implementation mode one
FIG. 1 is a schematic diagram of a simulation experiment device for an enhanced geothermal system according to a preferred embodiment of the present application; referring to fig. 1, the simulation experiment apparatus 100 includes a heat exchange chamber 1, a prefabricated rock block 2, an electric heating plate 3, a constant temperature liquid supply tank 4, two liquid collecting tanks 5, a high pressure plunger pump 6, and a horizontal ground stress simulation apparatus 7.
The heat exchange chamber 1 is used for providing a closed operation space for the simulation experiment device 100, and specifically, the heat exchange chamber 1 forms a closed cavity; an inlet and an outlet which is arranged corresponding to the inlet are formed in the heat exchange chamber 1, the inlet and the outlet are communicated with the cavity, and the number of the outlets is two.
The prefabricated rock mass 2 is placed in the cavity, an injection shaft 21, a first production shaft 22 and a second production shaft 23 are further arranged in the prefabricated rock mass 2, the injection shaft 21 is located between the first production shaft 22 and the second production shaft 23, the injection shaft 21 is communicated with the inlet, the first production shaft 22 and the second production shaft 23 are respectively communicated with the two outlets, and a preset gap is formed in the prefabricated rock mass 2; the injection well bore 21, the first production well bore 22 and the second production well bore 23 are all made of iron pipes and hard plastic pipes, wherein the inner diameter of each iron pipe is 0.01-0.03m, and the length of each iron pipe is 0.2-0.4 m; the diameter of the hard plastic pipe is 0.01-0.03m, the length of the hard plastic pipe is 0.1-0.6m, and the iron pipe is exposed in the prefabricated rock block 2 by 5-6cm and serves as an injection and production pipeline interface.
In order to improve the sealing performance of the simulation experiment device 100, the simulation experiment device 100 further comprises a waterproof sealing plug, and the waterproof sealing plug is used for enclosing the periphery of the prefabricated rock block 2 to ensure the sealing performance of the periphery of the prefabricated rock block 2. Specifically, the waterproof sealing plug is arranged in the cavity and surrounds the periphery of the prefabricated rock block 2; the heat conductivity coefficient of the waterproof sealing plug is more than or equal to 1W/(m.K), and the temperature resistance is-50-300 ℃. In this embodiment, the waterproof sealing plug is made of a high performance silicone heat conductive sealant.
The electric heating plate 3 is used for heating the precast rock block 2 in the heat exchange chamber 1 to simulate the formation temperature, and the electric heating plate 3 is attached to the outer surface of the heat exchange chamber 1; the maximum temperature that the electric heating plate 3 can provide reaches the temperature of 300 ℃, the simulation experiment device 100 further comprises a temperature control device 17, and the temperature control device 17 is connected with the electric heating plate 3.
The constant-temperature liquid supply tank 4 is used for supplying liquid, and the constant-temperature liquid supply tank 4 is communicated with the injection shaft 21 through the inlet by a first pipeline;
the two liquid collecting tanks 5 respectively penetrate through the two outlets and are respectively communicated with the first production shaft 22 and the second production shaft 23;
the high pressure plunger pump 6 is arranged in the first conduit for adjusting the flow rate of liquid entering the inlet. The flow of the high-pressure plunger pump 6 is adjustable, and the adjustable flow of the high-pressure plunger pump 6 is 5L/min at most.
The horizontal ground stress simulator 7 is arranged on the outer surface of the heat exchange chamber 1 uniformly, and the horizontal ground stress simulator 7 is arranged on the outer surface of the heat exchange chamber 1 uniformly. The number of the horizontal ground stress simulation devices 7 is 4, and the 4 horizontal ground stress simulation devices 7 are uniformly distributed on the outer surface of the same plane of the heat exchange chamber 1. In other words, 4 horizontal ground stress simulators 7 can respectively control the horizontal ground stress of the precast rock pieces 2 in the heat exchange chamber 1 in two directions on the same plane.
In order to more accurately control and monitor the temperature and pressure in the heat exchange chamber 1, the simulation experiment apparatus 100 further comprises a micro temperature sensor 8 and/or a micro pressure sensor 9, wherein the micro temperature sensor 8 and/or the micro pressure sensor 9 are embedded in the precast rock mass 2. The micro temperature sensor 8 and/or the micro pressure sensor 9 are small in size and embedded in the prefabricated rock block 2, so that the positions of the micro temperature sensor 8 and the micro pressure sensor are considered to have micro cracks, but are in a closed state, and the influence on an experimental result caused by the fact that a non-preset gap is formed in the prefabricated rock block 2 is avoided. Preferably, the micro temperature sensor 8 and the micro pressure sensor 9 are both connected with a data acquisition system, and the data acquisition system is connected with a computer 16 and is used for acquiring the pressure and the temperature in the inlet and the outlet of the pipeline and the pressure and the temperature of each point in the heat exchange chamber 1.
Preferably, the simulation experiment apparatus 100 further comprises an insulating layer 10, and the insulating layer 10 is laid on the periphery of the heat exchange chamber 1. The thickness of the heat-insulating layer 10 is 100 mm. The heat-insulating layer 10 can effectively reduce heat loss. The heat-insulating layer 10 is also provided with a data transmission line hole slot so as to facilitate the connection of the micro temperature sensor 8, the micro pressure sensor 9, the working fluid inlet and the working fluid outlet.
In addition, the simulation experiment apparatus 100 further includes a first temperature sensor 11, a second temperature sensor 13, a first pressure sensor 12, and a second pressure sensor 14, wherein the first temperature sensor 11 and the first pressure sensor 12 are connected in series between the inlet and the high-pressure plunger pump 6, and the second temperature sensor 13 and the second pressure sensor 14 are connected in series between the outlet and the sump 5. The simulation experiment device 100 further comprises a flow meter 15, wherein the flow meter 15 is arranged between the outlet and the liquid collecting tank 5 and is communicated with the outlet.
The simulation experiment device 100 can simulate the space distribution of the temperature and the pressure of the rock when heat in the high-temperature rock is extracted by adopting different well types, well patterns, well distances, reservoir transformation modes and fracture parameters, the heat energy extraction efficiency and the rock temperature recovery condition after heat extraction for a period of time; the fracture initiation and propagation method can simulate the initiation and propagation of the fracture under different rock physical and mechanical parameters, well types, well diameters, rock temperatures, injection flow rates, injection temperatures and ground stress states, and can judge the initiation position, direction and propagation range of the fracture.
Based on the same inventive concept, the present application further provides a method for evaluating the thermal storage reformation of the porous sandstone based on the above simulation experiment apparatus provided in the first embodiment, please refer to fig. 2, where the method includes:
and S100, according to a shaft in the well-shaped prefabricated rock block in the pore-type sandstone thermal storage, the shaft is made of an iron pipe and a hard plastic pipe. The rigid plastic tubing can simulate open hole completions and perforated completions. The wellbore includes an injection wellbore, a first production wellbore, and a second production wellbore.
Step S200, prefabricating a rock block by adopting quartz sand with a preset mesh number and quartz, feldspar, carbonate and clay according to a certain ratio, and placing a filter screen in the quartz sand to form the prefabricated rock block with cracks.
The prefabricated cracks in the prefabricated rock blocks are prefabricated by adopting filter screens, the cementation degree of quartz sand in the cracks is controlled according to the difference of the mesh number of the filter screens, and the larger the mesh number of the used filter screens is, the better the permeability of the prefabricated cracks is. The length, the height and the number of the prefabricated crack seams can be simulated by changing the length, the height and the number of the filter screens, and different prefabricated crack widths can be simulated by increasing or decreasing the number of the filter screens.
Wherein the mesh number of the filter screen is 20-80 meshes. The width of the prefabricated crack of the prefabricated rock block can be realized by increasing or decreasing the number of the filter screens, and the number of meshes of the filter screens can change the permeability of the prefabricated crack of the prefabricated rock block, namely the permeability of the prefabricated crack of the prefabricated rock block can be changed by changing the number of meshes of the filter screens. Step S300, placing the prefabricated rock block in a heat exchange chamber of the simulation experiment device;
s400, controlling the temperature of the rock in the heat exchange chamber to reach a preset temperature, and preserving heat at the preset temperature, wherein the preset temperature is 120-300 ℃;
step S500, adjusting a horizontal stress simulation device;
the pressure intensity of maximum 20MPa can be provided;
and S600, after the thermal storage development is carried out for a period of time, closing the high-pressure plunger pump, and observing the temperature recovery conditions of the rock mass and the cracks.
Wherein, the heat storage development period can be 1h, can be 2h, or is until the temperature of the produced liquid is not reduced any more.
And S700, adjusting the injection flow, and acquiring the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack.
Specifically, the step S600 comprises the steps of simulating a thermal reservoir development process by prefabricating cracks in the rock and simulating a thermal reservoir transformation process by not prefabricating cracks in the rock.
The method comprises the following steps of (1) prefabricating cracks in a rock block to simulate the development process of a thermal reservoir:
adding injected water with the temperature of 5-40 ℃ into the liquid supply tank and preserving heat; opening a high-pressure plunger pump, setting the injection flow to be 0.1-1L/min, simulating the development process of a thermal reservoir, and acquiring the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack;
simulating the thermal reservoir transformation process without prefabricating fractures in the rock:
adding injected water with the temperature of 5-40 ℃ into the liquid supply tank and preserving heat; opening the high-pressure plunger pump, and setting the injection flow to be 1.5-3 l/min; observing the pressure variation of the pressure sensor near the injection shaft, and if no sudden pressure drop occurs for a long time, increasing the injection flow until the crack is cracked
Preferably, the method further comprises: the high pressure plunger pump was started and set at an injection rate lower than the starting pressure to observe crack propagation. And recording the pressure change of a pressure sensor placed in the prefabricated rock block in the experimental process so as to judge the crack expansion range.
Example one
In the embodiment, the influence of the well spacing on the heat storage development effect when the pore sandstone heat storage development mode is horizontal well staged fracturing (two cracks) is researched, wherein the heat storage development mode is horizontal well one-injection two-extraction, and the heat storage development effect comprises the temperature and pressure spatial distribution in a rock block, the temperature and pressure spatial distribution in the crack, the heat extraction efficiency in the development process and the rock block temperature recovery and crack temperature recovery conditions after the heat storage development for a period of time.
S1, according to a shaft in the well-type prefabricated rock block in the pore-type sandstone thermal storage, the shaft is made of an iron pipe and a hard plastic pipe; the length of the iron pipe is 45cm, the inner diameter of the iron pipe is 2cm, the length of the hard plastic pipe is 40cm, the outer diameter of the hard plastic pipe is 2cm, a large-area hole is dug in the wall of the hard plastic pipe, an open hole completion is simulated, and the hard plastic pipe is inserted into the iron pipe and fixed. Specifically, 502 glue can be adopted for fixation;
s2, manufacturing a rock block in an iron sand box with the size of 1.2m, the width of 1.2m and the height of 0.8m by adopting quartz sand with a preset mesh number according to the mixture ratio of 52% of quartz, 30% of feldspar, 2% of carbonate and 16% of clay, placing a filter screen in the quartz sand to form the rock block with cracks, and manufacturing a small core column with the same mixture ratio to perform rock physical property parameter tests including permeability and porosity. Controlling the well spacing to be 0.5m, exposing 5-6cm of the iron pipe in the prefabricated rock block to serve as an injection and production pipeline interface, referring to fig. 3 and 4, prefabricating two cracks (with the spacing of 0.2m) in the horizontal section of the horizontal well by adopting a filter screen, and placing the manufactured sandstone rock block in the sun for curing for 28 days to form the prefabricated rock block; the filter screen adopts that 70 meshes of filter screens are selected for crack prefabrication, the cracks are rectangular, and the height of the cracks is 0.1 m.
S3, placing the rock blocks in a heat exchange chamber of the simulation experiment device;
s4, controlling an electric heating plate on the heat exchange chamber, adjusting a temperature control device to enable the prefabricated rock mass to reach a preset temperature of 120 ℃, and keeping the temperature for 24 hours;
s5, adjusting a horizontal stress simulation device, and keeping the stress difference to be 10 MPa;
and S6, after the thermal storage development is carried out for a period of time (1h or 2h, … or the temperature of produced fluid is not reduced any more), the high-pressure plunger pump is closed, and the temperature recovery condition of the rock mass and the cracks is observed.
And S7, adjusting the injection flow, setting the injection flow to be 0.5l/min, and acquiring the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack.
Example two
In the embodiment, a pore sandstone thermal storage development mode is researched, wherein the horizontal well is used for one injection and two extraction, a thermal storage transformation mode of horizontal well staged fracturing is adopted, the influence of the number of cracks and the crack spacing on a thermal storage development effect is adopted, and the thermal storage development effect comprises the temperature and pressure spatial distribution in a rock block, the temperature and pressure spatial distribution in a crack, the thermal extraction efficiency in the development process and the rock block temperature recovery and crack temperature recovery conditions after a period of thermal storage development.
S1, according to a shaft in the well-type prefabricated rock block in the pore-type sandstone thermal storage, the shaft is made of an iron pipe and a hard plastic pipe; the length of the iron pipe is 45cm, the inner diameter of the iron pipe is 2cm, the length of the hard plastic pipe is 60cm, the outer diameter of the hard plastic pipe is 2cm, a large-area hole is dug in the wall of the hard plastic pipe, an open hole completion simulation is performed, the hard plastic pipe is inserted into the side wall of the iron pipe to simulate the horizontal section, and the iron pipe is fixed. Specifically, 502 glue can be adopted for fixation;
s2, manufacturing a rock block in an iron sand box with the size of 1.2m, the width of 1.2m and the height of 0.8m by adopting quartz sand with a preset mesh number according to the mixture ratio of 52% of quartz, 30% of feldspar, 2% of carbonate and 16% of clay, placing a filter screen in the quartz sand to form the rock block with cracks, and manufacturing a small core column with the same mixture ratio to perform rock physical property parameter tests including permeability and porosity. Controlling the well spacing to be 0.5m, exposing 5-6cm of the iron pipe in the prefabricated rock block to serve as an injection and production pipeline interface, referring to fig. 5-7, prefabricating four cracks (the spacing is 0.05m), four cracks (the spacing is 0.1m) and six cracks (the spacing is 0.05m) in the horizontal section of the horizontal well by adopting a filter screen respectively, and maintaining the manufactured sandstone rock block in the sun for 28 days to form the prefabricated rock block; the filter screen adopts that 70 meshes of filter screens are selected for crack prefabrication, the cracks are rectangular, and the height of the cracks is 0.1 m.
S3, placing the rock blocks in a heat exchange chamber of the simulation experiment device;
s4, controlling an electric heating plate on the heat exchange chamber, adjusting a temperature control device to enable the prefabricated rock mass to reach a preset temperature of 120 ℃, and keeping the temperature for 24 hours;
s5, adjusting a horizontal stress simulation device, and keeping the stress difference to be 10 MPa;
and S6, after the thermal storage development is carried out for a period of time (1h or 2h, … or the temperature of produced fluid is not reduced any more), the high-pressure plunger pump is closed, and the temperature recovery condition of the rock mass and the cracks is observed.
And S7, adjusting the injection flow, setting the injection flow to be 0.5l/min, and acquiring the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack.
EXAMPLE III
The method is used for researching the influence of different fracture expansion ranges on the heat storage development effect in a vertical well one-injection two-extraction process, wherein the heat storage development effect comprises the temperature and pressure spatial distribution in the rock in the development process, the temperature and pressure spatial distribution in the fracture, the heat extraction efficiency and the rock temperature recovery and fracture temperature recovery after the heat storage development for a period of time.
S1, according to a shaft in the well-type prefabricated rock block in the pore-type sandstone thermal storage, the shaft is made of an iron pipe and a hard plastic pipe; the length of the iron pipe is 35cm, the inner diameter of the iron pipe is 2cm, the length of the hard plastic pipe is 15cm, the outer diameter of the hard plastic pipe is 2cm, a large-area hole is dug in the wall of the hard plastic pipe, an open hole completion is simulated, and the hard plastic pipe is inserted into the iron pipe and fixed. Specifically, 502 glue can be adopted for fixation;
s2, manufacturing a rock block in an iron sand box with the size of 1.2m, the width of 1.2m and the height of 0.8m by adopting quartz sand with a preset mesh number according to the mixture ratio of 52% of quartz, 30% of feldspar, 2% of carbonate and 16% of clay, placing a filter screen in the quartz sand to form the rock block with cracks, and manufacturing a small core column with the same mixture ratio to perform rock physical property parameter tests including permeability and porosity. Controlling the well spacing to be 0.4m, exposing 5-6cm of the iron pipe in the prefabricated rock block to be used as an injection and production pipeline interface, referring to the figures 8 and 9, respectively setting the lengths of cracks prefabricated by adopting filter screens on two sides of an injection well to be 0.2m and 0.5m, and placing the manufactured sandstone rock block in the sun for curing for 28 days to form the prefabricated rock block; the filter screen adopts that 70 meshes of filter screens are selected for crack prefabrication, the cracks are rectangular, and the height of the cracks is 0.1 m.
S3, placing the rock blocks in a heat exchange chamber of the simulation experiment device;
s4, controlling an electric heating plate on the heat exchange chamber, adjusting a temperature control device to enable the prefabricated rock mass to reach a preset temperature of 120 ℃, and keeping the temperature for 24 hours;
s5, adjusting a horizontal stress simulation device, and keeping the stress difference to be 10 MPa;
and S6, after the thermal storage development is carried out for a period of time (1h or 2h, … or the temperature of produced fluid is not reduced any more), the high-pressure plunger pump is closed, and the temperature recovery condition of the rock mass and the cracks is observed.
And S7, adjusting the injection flow, setting the injection flow to be 0.5l/min, and acquiring the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack.
The beneficial effect of this application is as follows:
1) the simulation experiment device for the enhanced geothermal system can simulate the ground stress in different horizontal directions, and can simulate the pressure change in thermal storage in different stress states when a certain well type, a well arrangement mode, a reservoir transformation mode and crack parameters are combined by a micro temperature sensor and a micro pressure sensor prefabricated in a prefabricated rock block, so that the crack initiation position and the expansion area in the thermal storage can be judged;
2) according to the invention, the rock mass is prefabricated by adopting quartz sand with different meshes, so that heat storage with different permeability can be simulated;
3) the iron pipe and the hard plastic pipe are adopted to simulate a shaft prefabricated in a rock mass, and a horizontal well, a vertical well and an inclined well can be simulated; the hard plastic pipe part can simulate perforation completion and open hole completion through prefabricated perforation and large-area open hole;
4) the invention can simulate different well spacing modes, including one-injection one-production, one-injection two-production, one-injection four-production, two-injection one-production, well spacing modes combining the vertical well and the horizontal well and the like in the vertical well spacing;
5) the invention adopts the filter screens to prefabricate well patterns in a prefabricated rock block, the filter screens are made into oval shapes or rectangular shapes and are placed in the prefabricated rock block to simulate cracks, the length, the height and the number of the cracks can be simulated by changing the length half axis, the length half axis and the number of the oval filter screens or changing the length, the width and the number of the rectangular filter screens, the widths of different cracks can be simulated by increasing or decreasing the number of the filter screens, and the cracks with different permeabilities can be simulated by selecting the filter screens with different meshes;
6) the simulation experiment device for the enhanced geothermal system has multiple functions of performing thermal storage reconstruction heat collection evaluation and temperature recovery experiments, performing thermal storage reconstruction crack initiation and expansion experiments, performing heat collection evaluation and temperature recovery experiments in different crack expansion areas, and realizing free switching of crack expansion experiments, heat collection evaluation experiments and temperature recovery experiments.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (9)
1. A method for evaluating pore type sandstone thermal storage reconstruction by using a simulation experiment device is characterized by comprising the following steps:
according to a shaft in the well-type prefabricated rock block in the pore-type sandstone thermal storage, the shaft is made of an iron pipe and a hard plastic pipe;
the method comprises the steps of prefabricating a rock block by adopting quartz sand with a preset mesh number and quartz, feldspar, carbonate and clay according to a certain ratio, placing a filter screen in the quartz sand to form the prefabricated rock block with cracks, wherein the length, the height and the number of the filter screen are changed to simulate the length, the height and the number of the prefabricated cracks, and the widths of different prefabricated cracks can be simulated by increasing or decreasing the number of the filter screens;
placing the rock mass in a heat exchange chamber of the simulated experiment apparatus;
controlling the temperature of the prefabricated rock block in the heat exchange chamber to reach a preset temperature, and preserving heat at the preset temperature, wherein the preset temperature is 120 ℃;
adjusting a horizontal ground stress simulation device;
after the thermal storage development is carried out for a period of time, the high-pressure plunger pump is closed, and the temperature recovery conditions of the rock blocks and the cracks are observed; adjusting the injection flow, and acquiring the temperature, pressure data, injection pressure, injection flow, extraction flow and extraction temperature of each point in the rock block and the crack;
wherein, the simulation experiment device includes:
a heat exchange chamber forming a closed chamber; an inlet and an outlet which is arranged corresponding to the inlet are formed in the heat exchange chamber, the inlet and the outlet are communicated with the cavity, and the number of the outlets is two;
the prefabricated rock block is placed in the cavity, an injection shaft, a first production shaft and a second production shaft are further arranged in the prefabricated rock block, the injection shaft is located between the first production shaft and the second production shaft, the injection shaft is communicated with the inlet, the first production shaft and the second production shaft are respectively communicated with the two outlets, and a preset gap is formed in the prefabricated rock block;
the electric heating plate is attached to the outer surface of the heat exchange chamber;
the constant-temperature liquid supply tank penetrates through the inlet through a first pipeline and is communicated with the injection shaft;
the two liquid collecting grooves respectively penetrate through the two outlets and are respectively communicated with the first production shaft and the second production shaft;
a high pressure plunger pump disposed in the first conduit;
the horizontal stress simulator is uniformly distributed on each outer surface of the heat exchange chamber.
2. The method of claim 1, wherein when the well pattern in the pore type sandstone thermal storage is a horizontal well pattern, and particularly a two-injection and two-recovery well pattern, the length of the iron pipe is 0.45m, and the inner diameter of the iron pipe is 0.02 m; the hard plastic pipe is 0.4m long and 0.02m in outer diameter; and digging a large area of holes on the wall of the hard plastic pipe to simulate open hole well completion, inserting the hard plastic pipe into the iron pipe, and fixing.
3. The method as claimed in claim 2, wherein the rock block is prepared by using quartz sand with a preset mesh number and quartz, feldspar, carbonate and clay according to a certain proportion, and a filter screen is placed in the quartz sand to form the rock block with cracks, and the method specifically comprises the following steps:
selecting the mesh number of quartz sand according to the permeability of the required rock, manufacturing sandstone rock blocks in an iron sand box with the size of 1.2m, 1.2m in width and 0.8m in height according to the mixture ratio of 52% of quartz, 30% of feldspar, 2% of carbonate and 16% of clay, controlling the well spacing to be 0.4m, exposing 5-6cm of an iron pipe in the prefabricated rock as an injection-production pipeline interface, and placing the manufactured sandstone rock blocks in the sun for curing for 28 days to form the rock blocks.
4. The method according to claim 2, wherein the adjusting the injection flow rate is in particular controlling the injection flow rate to be set at 0.5 l/min.
5. The method of claim 1, wherein the simulation experiment apparatus further comprises a micro temperature sensor and/or a micro pressure sensor embedded in the precast rock mass.
6. The method of claim 1 or 5, wherein the simulation experiment apparatus further comprises an insulating layer, wherein the insulating layer is laid on the periphery of the heat exchange chamber.
7. The method of claim 1 or 5, wherein the simulated experimental apparatus further comprises a waterproof sealing plug disposed in the chamber, the waterproof sealing plug being disposed around the periphery of the prefabricated rock mass.
8. The method of claim 1 or 5, wherein the injection wellbore, the first production wellbore and the second production wellbore are made of iron and rigid plastic tubing, wherein the iron tubing has an inner diameter of 0.01-0.03m and a length of 0.2-0.4 m; the diameter of the hard plastic pipe is 0.01-0.03m, the length of the hard plastic pipe is 0.1-0.6m, and the iron pipe is exposed in the prefabricated rock block by 5-6cm and serves as an injection and production pipeline interface.
9. The method of claim 1 or 5, wherein the simulation experiment device further comprises a first temperature sensor, a second temperature sensor, a first pressure sensor, a second pressure sensor, the first temperature sensor and the first pressure sensor being connected in series between the inlet and the high pressure plunger pump, the second temperature sensor and the second pressure sensor being connected in series between the outlet and the sump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068309.XA CN106677771B (en) | 2016-11-28 | 2016-11-28 | Simulation experiment device for enhanced geothermal system and method for evaluating pore-type sandstone thermal storage reconstruction by using simulation experiment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611068309.XA CN106677771B (en) | 2016-11-28 | 2016-11-28 | Simulation experiment device for enhanced geothermal system and method for evaluating pore-type sandstone thermal storage reconstruction by using simulation experiment device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106677771A CN106677771A (en) | 2017-05-17 |
| CN106677771B true CN106677771B (en) | 2020-09-15 |
Family
ID=58867056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611068309.XA Active CN106677771B (en) | 2016-11-28 | 2016-11-28 | Simulation experiment device for enhanced geothermal system and method for evaluating pore-type sandstone thermal storage reconstruction by using simulation experiment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106677771B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218029B (en) * | 2017-06-29 | 2020-12-01 | 中国石油天然气股份有限公司 | Plane heterogeneous model, injection-production simulation experiment device and method |
| CN107893652A (en) * | 2017-09-30 | 2018-04-10 | 中国石油大学(华东) | The hydraulic fracturing analogue experiment installation and method of the enhanced geothermal system of hot dry rock |
| CN109653737B (en) * | 2017-10-11 | 2024-03-22 | 中国石油化工股份有限公司 | Experimental device for simulating thickened oil heat dissipation law |
| CN107725036B (en) * | 2017-11-13 | 2021-03-02 | 泉州装备制造研究所 | Geothermal resource extraction simulation experiment device |
| CN107882535B (en) * | 2017-11-15 | 2020-05-22 | 广东石油化工学院 | Process method for developing heat energy of hot dry rock by adopting horizontal well |
| CN108007845A (en) * | 2017-12-25 | 2018-05-08 | 中国地质大学（武汉） | A kind of high temperature fracture seepage simulator for changing fracture opening |
| CN109991269B (en) * | 2019-04-04 | 2020-05-26 | 成都理工大学 | Experimental device for simulating geothermal resource heat exploitation efficiency of fluid injection exploitation and operation method |
| CN109882165B (en) * | 2019-04-04 | 2020-12-22 | 成都理工大学 | Geothermal resource exploitation simulation device with microwave heating and infrared temperature measurement and operation method |
| CN110261568A (en) * | 2019-05-31 | 2019-09-20 | 山东科技大学 | A kind of deep fractures underground heat exploitation simulation experiment system and experimental method |
| CN113417615B (en) * | 2020-03-02 | 2023-06-30 | 中国石油化工股份有限公司 | Dry-hot rock fracturing injection and production simulation experiment device |
| CN111879814B (en) * | 2020-07-31 | 2023-08-22 | 武汉大学 | Fracture rock mass hydrothermal transmission mechanism experimental device and system |
| CN111855357B (en) * | 2020-08-04 | 2022-08-23 | 东北石油大学 | Device for simulating local brittleness characteristic functional fracturing rock core manufacturing and crack monitoring |
| CN111852430A (en) * | 2020-08-04 | 2020-10-30 | 东北石油大学 | Fracturing fracture-making experimental device for simulating injection-production relation of multiple injection-production well pattern |
| CN111734381A (en) * | 2020-08-04 | 2020-10-02 | 东北石油大学 | Natural crack-containing fracturing and seam-making device for simulating injection-production relation of multiple injection-production well pattern |
| CN114112564B (en) * | 2020-08-28 | 2024-04-12 | 中国石油化工股份有限公司 | Manufacturing method of core sample for dry-hot rock fracturing, mining and injection integrated experiment |
| CN112541270B (en) * | 2020-12-16 | 2023-02-21 | 湖北省地质环境总站 | Hot spring cause model based on fracture convection type geothermal system |
| CN113446744A (en) * | 2021-06-15 | 2021-09-28 | 中国地质大学（武汉） | Geothermal reservoir production and irrigation simulation test system suitable for unconsolidated sandstone |
| CN113552649B (en) * | 2021-06-16 | 2022-08-19 | 山东大学 | Deep geothermal development geothermal field and displacement field comprehensive test model test system |
| CN113338875B (en) * | 2021-07-08 | 2022-11-01 | 中国科学院武汉岩土力学研究所 | Method for increasing permeability of unconsolidated sandstone reservoir by using carbon dioxide-water solution |
| CN114002408B (en) * | 2021-10-18 | 2024-10-22 | 武汉科技大学 | Visual test system and method for rock fracture seepage-temperature coupling |
| CN115561279A (en) * | 2022-12-05 | 2023-01-03 | 中国煤炭地质总局勘查研究总院 | Simulation experiment device for formation deep gas-heat co-production and use method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144562A1 (en) * | 2006-06-15 | 2007-12-21 | Aberdeen Petroleum Engineering Consultants Limited | Controlled location of the precipitation of scale in reservoirs |
| CN105181409A (en) * | 2015-09-21 | 2015-12-23 | 中国神华能源股份有限公司 | Simulation model for simulating cracks in rock strata and making method of simulation model |
| CN105332682A (en) * | 2015-10-21 | 2016-02-17 | 中国石油大学(北京) | Method of experimenting on impact of high-pressure fracture-cave bodies in carbonate rock reservoirs upon hydraulic fracture extension |
| CN105806763A (en) * | 2016-03-16 | 2016-07-27 | 中国地质大学（武汉） | Visualized test device for hot dry rock crack seepage and heat exchange process |
-
2016
- 2016-11-28 CN CN201611068309.XA patent/CN106677771B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007144562A1 (en) * | 2006-06-15 | 2007-12-21 | Aberdeen Petroleum Engineering Consultants Limited | Controlled location of the precipitation of scale in reservoirs |
| CN105181409A (en) * | 2015-09-21 | 2015-12-23 | 中国神华能源股份有限公司 | Simulation model for simulating cracks in rock strata and making method of simulation model |
| CN105332682A (en) * | 2015-10-21 | 2016-02-17 | 中国石油大学(北京) | Method of experimenting on impact of high-pressure fracture-cave bodies in carbonate rock reservoirs upon hydraulic fracture extension |
| CN105806763A (en) * | 2016-03-16 | 2016-07-27 | 中国地质大学（武汉） | Visualized test device for hot dry rock crack seepage and heat exchange process |
Non-Patent Citations (1)
| Title |
|---|
| Scale Model Simulation of Hydraulic Fracturing for EGS Reservoir Creation Using a Heated True-Triaxial Apparatus;Luke Frash等;《the International Conference for Effective and Sustainable Hydraulic Fracturing》;20130531;第959-977页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106677771A (en) | 2017-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106677771B (en) | Simulation experiment device for enhanced geothermal system and method for evaluating pore-type sandstone thermal storage reconstruction by using simulation experiment device | |
| Guo et al. | Performance of enhanced geothermal system (EGS) in fractured geothermal reservoirs with CO2 as working fluid | |
| Shi et al. | Numerical investigation on heat extraction performance of a multilateral-well enhanced geothermal system with a discrete fracture network | |
| CN106761721B (en) | Experimental device and experimental method for improving thermal reservoir in consideration of thermal stress fracturing natural fracture development for enhanced geothermal system | |
| Chen et al. | Designing multi-well layout for enhanced geothermal system to better exploit hot dry rock geothermal energy | |
| Zhang et al. | Numerical simulation of gas recovery from natural gas hydrate using multi-branch wells: A three-dimensional model | |
| CN107014974B (en) | Imitative experimental appliance for enhanced geothermal system and the method for testing enhanced geothermal system reservoir thermal energy recovery rate using it | |
| Zhang et al. | Electricity generation and heating potential from enhanced geothermal system in Songliao Basin, China: Different reservoir stimulation strategies for tight rock and naturally fractured formations | |
| Liu et al. | A novel natural gas hydrate recovery approach by delivering geothermal energy through dumpflooding | |
| CN106437674B (en) | Imitative water injection of horizontal well well pattern adaptation method | |
| Wei et al. | Numerical simulation of thermo-hydro-mechanical coupling effect in mining fault-mode hot dry rock geothermal energy | |
| Han et al. | Investigation on heat extraction characteristics in randomly fractured geothermal reservoirs considering thermo‐poroelastic effects | |
| Guo et al. | Hot dry rock geothermal potential of the Xujiaweizi area in Songliao Basin, northeastern China | |
| Daemi et al. | Impact of building thermal load on the developed thermal plumes of a multi-borehole GSHP system in different canadian climates | |
| Guo et al. | Parameter sensitivity analysis and optimization strategy research of enhanced geothermal system: A case study in Guide Basin, Northwestern China | |
| Liao et al. | Coupled thermal model for geothermal exploitation via recycling of supercritical CO2 in a fracture–wells system | |
| Toews et al. | Eavor-lite performance update and extrapolation to commercial projects | |
| CN102162353A (en) | Three-dimensional well pattern device of natural gas hydrate | |
| Sun et al. | Study on the intrinsic mechanisms underlying enhanced geothermal system (EGS) heat transfer performance differences in multi-wells | |
| CN115078121B (en) | Indirect visual rock multi-cluster fracturing indoor test device and method | |
| Song et al. | Numerical analysis on thermal characteristics of an open loop geothermal system in a single well | |
| Gudmundsson et al. | The Svartsengi reservoir in Iceland | |
| Li et al. | Thermal performance of an aquifer thermal energy storage system: Insights from novel multilateral wells | |
| CN215571342U (en) | Same-fracturing geothermal tail water recharging device | |
| CA3230210A1 (en) | Extracting geothermal energy from thin sedimentary aquifers |
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 |