CN112031758A - Experimental device for interference degree between layers in exploitation of communicated multi-layer reservoir - Google Patents
Experimental device for interference degree between layers in exploitation of communicated multi-layer reservoir Download PDFInfo
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- CN112031758A CN112031758A CN202010943202.5A CN202010943202A CN112031758A CN 112031758 A CN112031758 A CN 112031758A CN 202010943202 A CN202010943202 A CN 202010943202A CN 112031758 A CN112031758 A CN 112031758A
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- 239000007788 liquid Substances 0.000 claims abstract description 43
- 239000003921 oil Substances 0.000 claims abstract description 38
- 238000010438 heat treatment Methods 0.000 claims abstract description 31
- 239000010985 leather Substances 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000011161 development Methods 0.000 claims abstract description 16
- 238000004088 simulation Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000010729 system oil Substances 0.000 claims abstract description 10
- 239000010410 layer Substances 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000011229 interlayer Substances 0.000 claims description 14
- 239000011435 rock Substances 0.000 claims description 12
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- 238000007906 compression Methods 0.000 claims description 9
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- 238000012360 testing method Methods 0.000 claims description 8
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- 238000000034 method Methods 0.000 abstract description 8
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- 238000002474 experimental method Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
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- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
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- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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- 229910001629 magnesium chloride Inorganic materials 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/14—Obtaining from a multiple-zone well
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- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an experimental device for the interference degree between layers in the exploitation of a communicated multi-layer system reservoir stratum, which comprises a power system, a multi-layer system reservoir simulation development system and an acquisition system; the multilayer system oil reservoir simulation development system comprises a constant-temperature water bath thermal circulator, an annular pressure pump and a plurality of communicated internal heating core holders which are arranged in parallel; the communicated internal heating core holder comprises a pressure-resistant steel outer pipe, a pressure-resistant high-temperature-resistant leather sleeve and an end cover; the pressure-resistant and high-temperature-resistant leather sleeve is arranged in the pressure-resistant steel outer pipe, and two ends of the pressure-resistant and high-temperature-resistant leather sleeve are hermetically connected with the end covers; the annular pressure pump and the constant-temperature water bath thermal cycle machine are respectively communicated with a closed cavity between the pressure-resistant steel outer pipe and the pressure-resistant high-temperature-resistant leather sheath through the liquid injection port and the liquid discharge port; the closed core placing cavities of the two adjacent communicated internal heating core holders are communicated through pressure-resistant pipelines. The method can truly and accurately simulate the interference phenomenon among layers in the exploitation of the compact oil multilayer system oil deposit in a laboratory.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, relates to tight oil vertical well multilayer system oil reservoir exploitation, and particularly relates to an experimental device for the interlayer interference degree in the exploitation of a communicated multilayer system reservoir.
Background
Along with the development and research of unconventional energy such as compact oil, the traditional oil reservoir exploitation technology cannot meet the development requirement, and particularly aims at a compact oil vertical well multilayer system oil reservoir. Therefore, the research and development of a novel efficient and convenient multilayer system interlayer mining technology is very important. Because of the interlayer interference problem when the compact oil vertical well is produced in a multi-layer mode, the high-permeability layer can inhibit the development of the low-permeability layer in different degrees, and the yield when the multi-oil layer combined production is far less than the sum of the yields when the single production is carried out. It is particularly important to explore how to reduce the influence of the interlayer interference on the productivity and to find reasonable mining basic parameters. At present, most researches on the development of a compact oil vertical well multilayer oil reservoir tend to numerical simulation and physical simulation research and development, wherein although a numerical simulation method can quickly simulate an experimental result, the boundary condition of an established mathematical model is too ideal, and the difference between the boundary condition and the actual oil reservoir development process is large; most experiments only use the method that the single core holders are connected in parallel and heated externally to study, the problems of high-temperature and high-pressure stratum conditions and interlayer interference of a real oil reservoir are ignored, and the influence of the problems of mutual interference among oil layers of a compact oil vertical well and the like on the actual oil reservoir exploitation cannot be accurately and truly reflected.
Disclosure of Invention
The invention provides an experimental device for the interlayer interference degree in the exploitation of a communicated multilayer reservoir stratum, which aims to truly and effectively simulate the influence of interlayer interference in a compact oil multilayer reservoir on reservoir development.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an experimental device for the interlayer interference degree in the exploitation of a communicated multi-layer reservoir stratum, which comprises a power system, a multi-layer reservoir simulation development system and an acquisition system which are sequentially connected;
the multilayer system oil reservoir simulation development system comprises a constant-temperature water bath thermal cycle machine, a ring pressure pump and a plurality of communicated internal heating core holders which are arranged in parallel; the communicated internal heating rock core holder comprises a pressure-resistant steel outer pipe, a pressure-resistant high-temperature-resistant leather sleeve and end covers for plugging two ends of the pressure-resistant steel outer pipe; the pressure-resistant and high-temperature-resistant leather sleeve is arranged in the pressure-resistant steel outer pipe, two ends of the pressure-resistant and high-temperature-resistant leather sleeve are hermetically connected with the end covers, and the pressure-resistant and high-temperature-resistant leather sleeve and the end covers form a closed core placing cavity; the annular pressure pump and the constant-temperature water bath thermal cycler are respectively communicated with a closed cavity between the pressure-resistant steel outer pipe and the pressure-resistant high-temperature-resistant leather sheath through the liquid injection port and the liquid discharge port; the number of the communicated internal heating core holders is not less than two, and the closed core placing cavities of two adjacent communicated internal heating core holders are communicated through a pressure-resistant pipeline.
Preferably, the end covers are divided into a left end cover and a right end cover, an ejector rod is arranged at the left end cover, an injection port is formed in the ejector rod, and the power system is communicated with the closed core placing cavity through the ejector rod; and a compression bow is fixedly connected to the left end cover, and the compression bow is in contact with the ejector rod and forms a compression effect.
Preferably, the power system is a high-precision multistage plunger displacement pump, and the high-precision multistage plunger displacement pump is communicated with the injection port of the ejector rod through a pressure-resistant pipeline; a six-way valve is arranged on a pressure-resistant pipeline between the high-precision multistage plunger displacement pump and the ejector rod, and a pressure gauge is arranged on the six-way valve; a first intermediate container is arranged between the high-precision multistage plunger displacement pump and the six-way valve through a valve, and an oil sample is contained in the first intermediate container.
Preferably, the acquisition system comprises a super-oleophobic liquid collection device and an automatic scanning system, the automatic scanning system comprises an acquisition module, a control processing module and a display module which are electrically connected in sequence, and the acquisition module is arranged corresponding to the super-oleophobic liquid collection device; the sealed rock core placing cavity corresponds to the right end cover, an extraction outlet is formed in the right end cover, a valve is installed on the extraction outlet, and the super-oleophobic liquid collecting device is arranged at the extraction outlet.
Preferably, the acquisition module is a high-frequency scanning camera device, and the control processing module and the display module are composed of a computer.
Preferably, the extraction ports are communicated with a vacuum pump through a pressure-resistant pipeline, a three-way valve is mounted on the pressure-resistant pipeline close to the vacuum pump, and a pressure gauge is mounted on the three-way valve; the three-way valve is communicated with a second intermediate container through a pressure-resistant pipeline, and simulated formation water is contained in the second intermediate container.
Preferably, a valve is arranged on a pressure-resistant pipeline for communicating the closed core placing cavity of the two adjacent communicated internal heating core holders.
Preferably, the super oleophobic liquid collection device is made of hydrophilic materials.
The invention discloses the following technical effects: the method can truly and accurately simulate the interference phenomenon among layers in the exploitation of the compact oil multilayer system oil deposit in a laboratory.
The system precisely controls physical parameters such as pressure, temperature and flow among different oil layers through a multilayer oil reservoir simulation development system, and the influence of the interlayer interference problem on productivity in the exploitation of a compact oil multilayer oil reservoir is studied in detail, so that the seepage deviation and the exploitation cost in the oil reservoir exploitation are reduced, and the oil field recovery ratio is improved.
Meanwhile, the problem that the pressure and the temperature between layers cannot be controlled in a conventional parallel core simulation experiment is solved.
Adopt super hydrophilic liquid collecting device and automatic scanning system has improved the experiment precision especially, the effectual experiment error that has reduced.
The invention has the advantages of simple structure, ingenious design, simple and convenient use, high accuracy and strong practicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic structural diagram of an experimental device for simulating interlayer interference in multi-layer reservoir exploitation in a communication manner according to the present invention;
FIG. 2 is a schematic view of a communicating internally heated core holder according to the present disclosure;
FIG. 3 is a schematic diagram of another intercommunicating internally heated core holder of the present disclosure;
the device comprises a 1-high-precision multi-stage plunger displacement pump, a 2-pressure-resistant pipeline, a 3-valve, a 4-six-way valve, a 5-communicated internal heating core holder, a 7-constant-temperature water bath heat circulator, an 8-ring pressure pump, a 9-superoleophobic liquid collection device, a 10-high-frequency scanning camera device, an 11-computer, a 12-pressure-resistant steel outer pipe, a 13-injection port, a 14-liquid discharge port, a 15-second middle container, a 16-compaction bow, a 17-ejector rod, a 18-left end cover, a 19-right end cover, a 20-extraction port, a 21-pressure-resistant high-temperature-resistant leather sheath, a 22-liquid injection port, a 23-vacuum pump, a 24-first middle container, a 25-three-way valve and a 26-pressure gauge.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides an experimental device for the interlayer interference degree in the exploitation of a communicated multi-layer reservoir stratum, which comprises a power system, a multi-layer reservoir simulation development system and an acquisition system which are sequentially connected;
the multilayer system oil reservoir simulation development system comprises a constant-temperature water bath thermal cycle machine 7, a ring pressure pump 8 and a plurality of communicated internal heating core holders 5 which are arranged in parallel; the communicated internal heating core holder 5 comprises a pressure-resistant steel outer pipe 12, a pressure-resistant high-temperature-resistant leather sheath 21 and end covers for plugging two ends of the pressure-resistant steel outer pipe 12; the pressure-resistant and high-temperature-resistant leather sheath 21 is arranged in the pressure-resistant steel outer pipe 12, two ends of the pressure-resistant and high-temperature-resistant leather sheath 21 are hermetically connected with the end covers, and a closed core placing cavity is formed by the pressure-resistant and high-temperature-resistant leather sheath 21 and the end covers; the pressure-resistant steel outer pipe 12 is provided with a liquid injection port 22 and a liquid discharge port 14 which are respectively used for injecting liquid and discharging gas during annular pressure, and the annular pressure pump 8 and the constant-temperature water bath thermal cycle machine 7 are respectively communicated with a closed cavity between the pressure-resistant steel outer pipe 12 and the pressure-resistant high-temperature-resistant leather sheath 21 through the liquid injection port 22 and the liquid discharge port 14; the number of the communicated internal heating core holders 5 is not less than two, and the closed core placing cavities of two adjacent communicated internal heating core holders 5 are communicated through a pressure-resistant pipeline 2.
Further, the end covers are divided into a left end cover 18 and a right end cover 19, an ejector rod 17 is arranged at the position of the left end cover 18, an injection port 13 is formed in the ejector rod 17, and the power system is communicated with the closed core placing cavity through the ejector rod 17; a compression bow 16 is fixedly connected to the left end cover 18, and the compression bow 16 is in contact with the ejector rod 17 to form a compression effect.
Further, the power system is a high-precision multistage plunger displacement pump 1, and the high-precision multistage plunger displacement pump 1 is communicated with the injection port 13 of the ejector rod 17 through a pressure-resistant pipeline 2; a six-way valve 4 is arranged on a pressure-resistant pipeline 2 between the high-precision multistage plunger displacement pump 1 and the ejector rod 17, and a pressure gauge 26 is arranged on the six-way valve 4; a first intermediate container 24 is arranged between the high-precision multistage plunger displacement pump 1 and the six-way valve 4 through a valve 3, and oil samples are contained in the first intermediate container 24.
Furthermore, the acquisition system comprises a super-oleophobic liquid collection device and an automatic scanning system, the automatic scanning system comprises an acquisition module, a control processing module and a display module which are electrically connected in sequence, and the acquisition module is arranged corresponding to the super-oleophobic liquid collection device; and a production outlet 20 is formed in the right end cover 19 corresponding to the closed rock core placing cavity, a valve 3 is installed on the production outlet 20, and the super-oleophobic liquid collecting device is arranged at the production outlet 20.
Further, the acquisition module is a high-frequency scanning camera device 10, and the control processing module and the display module are composed of a computer 11.
Further, the extraction port 20 is communicated with a vacuum pump 23 through a pressure-resistant pipeline 2, a three-way valve 25 is mounted on the pressure-resistant pipeline 2 close to the vacuum pump 23, and a pressure gauge 26 is mounted on the three-way valve 25; the three-way valve 25 is communicated with a second intermediate container 15 through a pressure-resistant pipeline 2, and simulated formation water is contained in the second intermediate container 15.
Further, a valve 3 is arranged on a pressure-resistant pipeline 2 used for communicating two adjacent communicated internal heating core holders 5 to seal the core placing cavity.
Furthermore, the super oleophobic liquid collection device is made of hydrophilic materials.
The invention provides an experimental device for simulating interlayer interference in multi-layer oil reservoir exploitation, which is characterized in that a high-precision multi-stage plunger displacement pump 1 is respectively connected with injection ports 13 on three ejector rods 17 through a pressure-resistant pipeline 2 and a six-way valve 4 to connect three communicated internal heating core holders 5 in parallel, and a constant-temperature water bath heat circulator 7 and an annular pressure pump 8 provide annular pressure for a pressure-resistant high-temperature-resistant leather sheath 21 in a circulating constant-temperature 70 ℃ environment through an injection port 22 and a liquid discharge port 14 on a pressure-resistant steel outer pipe 12 and a closed cavity; the sampling port 20 is directly connected with the super oleophobic liquid collection device to collect effluent liquid in the displacement process, the automatic scanning system is started, the high-frequency scanning camera device 10 is used for photographing the collected liquid in the super oleophobic liquid collection device every 20s, and the control processing module and the display module are used for making a time-flow chart for standby application.
The use method of the communicated experimental device for simulating the interlayer interference in the exploitation of the multilayer reservoir comprises the following steps:
firstly, processing a real compact oil storage stratum core by a Brazilian splitting method well known in the field; selecting 3 real compact oil storage stratum rock cores with the length of 10cm, the diameter of 2.5cm, the permeability of 5.1mD, 5.7mD and 6.2mD after the Brazilian splitting treatment, vacuumizing, heating and drying for 4 hours at the temperature of a vacuum drying oven of 105 ℃, then respectively weighing three times by using a kilo-position analytical balance, and taking the average value of the three times to obtain the dry weights of m1, m2 and m3 of the 3 real compact oil storage stratum rock cores with the permeability of 5.1mD, 5.7mD and 6.2mD respectively; then the core holders are sequentially placed into the closed core placing cavities of the three communicated internal heating core holders 5 for standby.
Assembling instruments by using a pressure-resistant pipeline 2 according to the sequence of the high-precision multistage plunger displacement pump 1, the six-way valve 4, the communicated internal heating rock core holder 5, the super-oleophobic liquid collection device 9, the high-frequency scanning camera device 10 and the computer 11;
wherein, the high-precision multistage plunger displacement pump 1 is connected with the six-way valve 4 by a pressure-resistant pipeline 2; the six-way valve 4 is provided with three pressure-resistant pipelines 2 which are connected in parallel with three communicated internal heating core holders 5;
three pressure-resistant pipelines 2 for communicating two adjacent communicated internal heating core holders 5 to seal the core placing cavity are arranged, and each pressure-resistant pipeline 2 is provided with a valve 3 for controlling each parallel communicated internal heating core holder 5;
wherein, a pressure-resistant pipeline 2 bent downwards is respectively arranged on the right end covers 19 of the three communicated internal heating rock core holders 5 to be used as a production outlet 20, and is directly connected with the three super-oleophobic liquid collecting devices 9; valves 3 are arranged on the three extraction ports 20;
wherein, the high-frequency scanning camera device 10 and the computer 11 are arranged behind the super oleophobic liquid collecting device 9 and are used for precise high-frequency shooting.
And step three, respectively connecting a three-ring pressing pump 8 and a constant-temperature water bath heat circulator 7 to a liquid injection port 22 and a liquid discharge port 14 on the three communicated internal heating core holders 5 by using a pressure-resistant pipeline 2, respectively increasing the ring pressing to 4MPa, and adjusting the temperature to 70 ℃ for later use.
And step four, preparing 1L of simulated formation water according to the mass fraction ratio of NaCl to CaCl2 to MgCl2 to 70 to 6 to 4 for later use.
Fifthly, vacuumizing the rock core for 5 hours by using a vacuum pump 23 to saturate simulated formation water;
the vacuum pump 23 is connected with a three-way valve 25 through a pressure-resistant pipeline 2, the three-way valve 25 is connected to the left side of a valve 3 on the production outlet 20 through the pressure-resistant pipeline 2, the six-way valve 4 and the valve 3 on the production outlet 20 are closed, the production outlet 20 is not communicated with the second intermediate container 15, the vacuum pump 23 is opened, vacuumizing is started for 5h, the inner part of the rock core is guaranteed to be in a vacuum state, then the production outlet 20 is not communicated with the vacuum pump 23 by adjusting the opening state of the three-way valve 25, the production outlet 20 is communicated with the second intermediate container 15, simulated formation water in the second intermediate container 15 is sucked into the closed rock core placing cavity under the action of negative pressure, and the rock core is saturated and simulated formation water is sucked.
Step six, after the steps, setting the injection speed of the high-precision multistage plunger displacement pump 1 to be 0.01mL/min, opening a first intermediate container 24 containing an oil sample, simultaneously ensuring that a communicated internal heating core holder 5 is in a state of being communicated with the atmosphere, saturating the core with oil until the oil saturation in the core is about 50%, closing all valves 3, and aging for one week at 70 ℃ for later use;
wherein, in order to control the water injection and the oil injection conveniently, valves 3 are arranged at the upper outlet end and the lower inlet end of the first intermediate container 24 and the second intermediate container 15.
Seventhly, after the steps, replacing the first intermediate container 24 with a second container, setting the flow rate of the high-precision multistage plunger displacement pump 1 at 0.01mL/min, opening both a valve 3 and a six-way valve 4 which are communicated with the second intermediate container 15 filled with simulated formation water, closing the valve 3 on a right end cover 19 of the three communicated internal heating core holder 5, starting displacement until the indication number of a pressure gauge 26 at the six-way valve 4 is 20MPa, closing the six-way valve 4, simultaneously opening the valves 3 on the three right end covers 19, performing compact oil depletion type mining, simultaneously placing the three super-oleophobic liquid collecting devices 9 at an outlet end, starting an automatic scanning system, performing high-frequency photographing on liquid collection quantity of the three super-oleophobic liquid collecting devices, and analyzing and processing the three super-oleophobic liquid collecting devices by using processing software;
when the compact oil exhaustion type exploitation is carried out, the influence of the interference between layers in the exploitation of the compact oil multi-layer system oil deposit on the productivity is analyzed by controlling the switches of six valves 3 between three communicated internal heating core holders 5; the influence of the interference between layers in the exploitation of the compact oil multi-layer system oil deposit on the productivity is finally analyzed by adjusting and testing the quantity and the position of the switches of the control valves 3.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solutions of the present invention can be made by those skilled in the art without departing from the spirit of the present invention, and the technical solutions of the present invention are within the scope of the present invention defined by the claims.
Claims (8)
1. An experimental device for the interlayer interference degree in the exploitation of a communicated multi-layer reservoir stratum is characterized by comprising a power system, a multi-layer reservoir simulation development system and an acquisition system which are sequentially connected;
the multilayer system oil reservoir simulation development system comprises a constant-temperature water bath thermal cycle machine (7), a ring pressure pump (8) and a plurality of communicated internal heating core holders (5) which are arranged in parallel; the communicated internal heating rock core holder (5) comprises a pressure-resistant steel outer pipe (12), a pressure-resistant high-temperature-resistant leather sleeve (21) and end covers for plugging two ends of the pressure-resistant steel outer pipe (12); the pressure-resistant and high-temperature-resistant leather sheath (21) is arranged in the pressure-resistant steel outer pipe (12), two ends of the pressure-resistant and high-temperature-resistant leather sheath (21) are hermetically connected with the end covers, and the pressure-resistant and high-temperature-resistant leather sheath (21) and the end covers form a closed core placing cavity; the pressure-resistant steel outer pipe (12) is provided with a liquid injection port (22) and a liquid discharge port (14), and the ring pressure pump (8) and the constant-temperature water bath heat cycle machine (7) are respectively communicated with a closed cavity between the pressure-resistant steel outer pipe (12) and the pressure-resistant high-temperature-resistant leather sheath (21) through the liquid injection port (22) and the liquid discharge port (14); the number of the communicated internal heating core holders (5) is not less than two, and the closed core placing cavities of two adjacent communicated internal heating core holders (5) are communicated through a pressure-resistant pipeline (2).
2. The experimental facility for testing the degree of interbedding interference in the exploitation of the connected multilayer series reservoir stratum according to claim 1, wherein: the end covers are divided into a left end cover (18) and a right end cover (19), an ejector rod (17) is arranged at the position of the left end cover (18), an injection port (13) is arranged on the ejector rod (17), and the power system is communicated with the closed core placing cavity through the ejector rod (17); a compression bow (16) is fixedly connected to the left end cover (18), and the compression bow (16) is in contact with the ejector rod (17) and forms a compression effect.
3. The experimental facility for testing the degree of interbedding interference in the exploitation of the connected multilayer series reservoir stratum according to claim 2, wherein: the power system is a high-precision multistage plunger displacement pump (1), and the high-precision multistage plunger displacement pump (1) is communicated with an injection port (13) of the ejector rod (17) through a pressure-resistant pipeline (2); a six-way valve (4) is arranged on a pressure-resistant pipeline (2) between the high-precision multistage plunger displacement pump (1) and the ejector rod (17), and a pressure gauge (26) is arranged on the six-way valve (4); a first intermediate container (24) is arranged between the high-precision multistage plunger displacement pump (1) and the six-way valve (4) through a valve (3), and an oil sample is contained in the first intermediate container (24).
4. The experimental facility for testing the degree of interbedding interference in the exploitation of the connected multilayer series reservoir stratum according to claim 2, wherein: the system comprises an acquisition system, a display system and a control system, wherein the acquisition system comprises a super-oleophobic liquid collection device and an automatic scanning system, the automatic scanning system comprises an acquisition module, a control processing module and a display module which are electrically connected in sequence, and the acquisition module is arranged corresponding to the super-oleophobic liquid collection device; and a production outlet (20) is formed in the right end cover (19) corresponding to the closed core placing cavity, a valve (3) is installed on the production outlet (20), and the super-oleophobic liquid collecting device is arranged at the production outlet (20).
5. The experimental facility for testing the degree of interference between layers in the exploitation of the connected multilayer series reservoir stratum according to claim 4, wherein: the acquisition module is a high-frequency scanning camera device (10), and the control processing module and the display module are composed of a computer (11).
6. The experimental facility for testing the degree of interference between layers in the exploitation of the connected multilayer series reservoir stratum according to claim 4, wherein: the production outlet (20) is communicated with a vacuum pump (23) through a pressure-resistant pipeline (2), a three-way valve (25) is installed on the pressure-resistant pipeline (2) close to the vacuum pump (23), and a pressure gauge (26) is installed on the three-way valve (25); the three-way valve (25) is communicated with a second intermediate container (15) through a pressure-resistant pipeline (2), and simulated formation water is contained in the second intermediate container (15).
7. The experimental facility for testing the degree of interbedding interference in the exploitation of the connected multilayer series reservoir stratum according to claim 1, wherein: and a valve (3) is arranged on a pressure-resistant pipeline (2) for communicating the closed core placing cavity of the two adjacent communicated internal heating core holders (5).
8. The experimental facility for testing the degree of interference between layers in the exploitation of the connected multilayer series reservoir stratum according to claim 4, wherein: the super oleophobic liquid collection device is made of hydrophilic materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010943202.5A CN112031758A (en) | 2020-09-09 | 2020-09-09 | Experimental device for interference degree between layers in exploitation of communicated multi-layer reservoir |
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| CN202010943202.5A CN112031758A (en) | 2020-09-09 | 2020-09-09 | Experimental device for interference degree between layers in exploitation of communicated multi-layer reservoir |
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| CN112031758A true CN112031758A (en) | 2020-12-04 |
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