CN110185435B - Heterogeneous reservoir well testing analysis test device - Google Patents
Heterogeneous reservoir well testing analysis test device Download PDFInfo
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- CN110185435B CN110185435B CN201910520861.5A CN201910520861A CN110185435B CN 110185435 B CN110185435 B CN 110185435B CN 201910520861 A CN201910520861 A CN 201910520861A CN 110185435 B CN110185435 B CN 110185435B
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- well
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- inner cavity
- sealing
- exciting
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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
- E21B47/00—Survey of boreholes 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
- 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
Abstract
The invention relates to a test device for well testing analysis of a heterogeneous reservoir, which is used for providing test data for calculating flow parameters among wells of the heterogeneous reservoir. It includes: the cylindrical box body is provided with a box body inner cavity, an annular space is arranged between the box body inner cavity and the side wall of the box body, a liftable partition plate is placed in the box body inner cavity and used for placing artificial reservoir rock samples, and quartz sand with different grain sizes and grades can be filled around simulated perforation mineshafts on two sides of the artificial reservoir rock samples and used for simulating heterogeneous reservoirs. The two simulated perforation wellholes are used for simulating an exciting well and an observing well respectively. The top of the exciting well is provided with a water injection valve, the bottom of the observation well is connected with a bottom hole pressure gauge, the working system of the exciting well is changed by injecting water and stopping injecting, and bottom hole pressure data of the observation well is recorded at the same time, so that a bottom hole pressure change curve of the observation well is obtained, and test data are provided for calculating flow parameters among wells of the heterogeneous reservoir.
Description
Technical Field
The invention belongs to the technical field of oil and gas field development experiments, and particularly relates to a testing device for heterogeneous reservoir well testing analysis.
Background
Reservoir parameters need to be researched through a well testing technology in the oil and gas field development process. When testing a well, one well is generally used as an exciting well, the other well is used as an observation well, after the working condition of the exciting well is changed, an unstable pressure change stage can appear in the adjacent observation well, the bottom hole pressure change of the observation well caused by the change of the working system of the exciting well is recorded, and the flow parameters among the wells can be calculated according to the time and the law of the bottom hole pressure change of the observation well. However, the well testing technique takes a long time in the field construction process, and the development cost of the oil field is increased. Therefore, the testing device for heterogeneous reservoir well testing analysis can simulate the actual well testing process indoors.
Disclosure of Invention
The invention aims to provide a test device for heterogeneous reservoir well testing analysis. With this device, two simulated perforated wellbores are used to simulate an activation well and an observation well, respectively. A liftable partition plate is arranged in an inner cavity of the box body and used for placing artificial reservoir rock samples, and quartz sand with different grain sizes and grades can be filled around the simulated perforation shaft on two sides of the artificial reservoir rock samples to simulate a heterogeneous reservoir. The working system of the exciting well is changed by injecting water and stopping injecting, and the bottom hole pressure data of the observation well is recorded at the same time, so that the bottom hole pressure change curve of the observation well is obtained, and test data are provided for calculating flow parameters among wells of the heterogeneous reservoir.
The invention adopts the following technical scheme:
a test apparatus for heterogeneous reservoir well testing analysis, comprising: cylinder box, water injection valve, pressure relief valve, sealed inner cup, sealed enclosing cover, artificial reservoir rock specimen, excitement well, observation well, pit shaft restriction valve, well head manometer can be carried and draw division board, sealing washer, seal gasket, sand control cushion, shaft bottom pressure ware, its characterized in that: the cylindrical box body is provided with a box body inner cavity, an annular space is arranged between the box body inner cavity and the side wall of the box body, a liftable partition plate is arranged in the middle of the box body inner cavity through a clamping groove and used for placing artificial reservoir rock samples, the spaces on two sides of the artificial reservoir rock samples in the box body inner cavity are used for placing two simulated perforation shafts, the bottoms of the two simulated perforation shafts are clamped into the box body inner cavity through grooves, quartz sand with different grain sizes and gradations can be filled around the bottoms of the two simulated perforation shafts, the two simulated perforation shafts are respectively used for simulating an excitation well and an observation well, and sand prevention cushion layers are wrapped on the outer sides of the two simulated perforation shafts and used for preventing the quartz sand from entering the simulated perforation shafts; the top of the exciting well is provided with a thread fixed water injection valve and is connected with a wellhead pressure gauge, the top of the observation well is provided with a thread fixed shaft flow limiting valve, and the bottom of the observation well is connected with a bottom hole pressure gauge; the parts of the two simulated perforation shafts below the inner sealing covers adopt a large-diameter design, and the lower parts of the inner sealing covers are provided with sealing gaskets to ensure the sealing property of the inner cavities of the box bodies; the sealing inner cover is fixed with the inner cavity of the box body through the clamping groove, the sealing ring is arranged at the clamping groove, and the sealing outer cover is tightly fixed with the cylindrical box body through threads, so that the inner cavity of the box body and the sealing inner cover are further reinforced; the injected water enters the filled quartz sand through the exciting well and flows out of the shaft of the observation well after flowing through the artificial reservoir rock sample, so that the well testing process is simulated.
Compared with the prior art, the technical scheme of the invention can simulate the working system of the exciting well under the condition of a heterogeneous reservoir by injecting water and stopping the injection, the injected water enters the heterogeneous reservoir through the exciting well and flows out of the shaft of the observation well, and simultaneously the bottom hole pressure change curve of the observation well is recorded to simulate the well testing process.
As a preferable mode of the invention, the clamping groove of the inner sealing cover is provided with a sealing ring, and the bottom of the inner sealing cover is provided with a sealing gasket.
In a preferred mode of the invention, the two simulated perforated shaft bodies are used for simulating an activation well and an observation well respectively, and a sand control cushion is wrapped outside the simulated perforated shaft bodies.
As a preferable mode of the present invention, a liftable partition plate is provided inside the inner cavity of the box body.
Drawings
FIG. 1 is a schematic overview of the structure of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Figure 3 is a cross-sectional view of the inner closure of the present invention.
Fig. 4 is a cross-sectional view of the closure cap of the present invention.
Fig. 5 is a schematic view of the interior of the housing of the present invention.
In the figure: 1. the device comprises a water injection valve, a 2 exciting well, a 3 cylindrical box body, a 4 shaft flow limiting valve, a 5 observation well, a 6 sealing inner cover, a 7 sealing outer cover, an 8 pressure relief valve, a 9 sealing ring, a 10 well head pressure gauge, a 11 lifting separation plate, a 12 sealing gasket, a 13 sand prevention cushion layer, a 14 well bottom pressure gauge and a 15 artificial reservoir rock sample.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
in the embodiment of the invention, the cylindrical box body 3 is provided with a box body inner cavity, an annular space is arranged between the box body inner cavity and the side wall of the box body, and the cylindrical box body 3 is provided with a pressure relief valve 8 which can remove the fluid in the box body inner cavity when necessary. The inner sealing cover 6 is fixed with the inner cavity of the box body through a clamping groove, the outer sealing cover 7 is tightly fixed with the cylindrical box body 3 through threads, the inner cavity of the box body and the inner sealing cover are further reinforced, a sealing ring 9 is arranged at the clamping groove of the inner sealing cover 6, a sealing gasket 12 is arranged at the bottom of the inner sealing cover to ensure the sealing performance of the device, two simulation perforation shafts simulate an exciting well 2 and an observing well 5 respectively, the exciting well 2 and the observing well 5 are clamped into the inner cavity of the box body through grooves respectively, the parts of the two simulation perforation shafts under the inner sealing cover adopt a thick-diameter design, a sand control cushion layer 13 is wrapped outside the two simulation perforation shafts to prevent quartz sand from entering the simulation perforation shafts, a thread fixing water injection valve 1 is arranged at the top of the exciting well 2 and connected with a wellhead pressure gauge 10, a thread fixing shaft flow limiting valve 4 is arranged at the top of the observing well 5, the bottom of the observing well 5 is connected with a shaft bottom pressure device 14, a liftable partition plate 11 is arranged in the inner cavity of the box body to place an artificial reservoir stratum sample 15, quartz sand sample can be filled around the simulation shafts on two sides of the artificial reservoir and can be filled with quartz sand with different particle sizes and grades to simulate a heterogeneous reservoir.
As a preferred structure of the invention, the two simulated perforation mineshafts are respectively used for simulating an exciting well and an observation well, and the outer sides of the simulated perforation mineshafts are wrapped with sand control cushions for preventing quartz sand from entering the simulated perforation mineshafts; a water injection valve is arranged at the top of the exciting well, and a shaft flow limiting valve is arranged at the top of the observation well; the injected water enters the filled quartz sand through the exciting well and flows out of the shaft of the observation well after flowing through the artificial reservoir rock sample, so that the well testing process is simulated.
As a preferred structure of the invention, a liftable partition plate is arranged in the inner cavity of the box body and is used for placing artificial reservoir rock samples, and quartz sand with different grain sizes and gradations can be filled around two simulated perforation mineshafts at two sides of the artificial reservoir rock samples to simulate a heterogeneous reservoir.
As a preferable structure of the invention, the sealing inner cover is fixed with the inner cavity of the box body through the clamping groove, and the sealing outer cover is tightly fixed with the cylindrical box body through threads, so that the inner cavity of the box body and the sealing inner cover are further reinforced.
Claims (2)
1. The utility model provides a heterogeneous reservoir test well analysis's test device, includes cylinder box, pressure release valve, arouses well, observation well, water injection valve, sealed inner cup, sealed enclosing cover, artificial reservoir rock specimen, pit shaft restriction valve, can carry and draw division board, sealing washer, seal gasket, sand control bed course, well head manometer, shaft bottom pressure ware, its characterized in that: the cylindrical box body is provided with a pressure relief valve, and fluid in the inner cavity of the box body can be removed when necessary; a liftable partition plate is arranged in the inner cavity of the box body so as to place artificial reservoir rock samples; the space at two sides of the artificial reservoir rock sample in the inner cavity of the box body is used for placing two simulated perforation mineshafts, and quartz sand with different grain sizes and grades is filled around the simulated perforation mineshafts for simulating a heterogeneous reservoir; the top of the inner cavity of the box body is provided with an inner sealing cover, the inner sealing cover is connected with the inner cavity of the box body through a clamping groove, a sealing ring is arranged at the clamping groove, and the bottom of the inner sealing cover is provided with a sealing gasket; the sealing outer cover and the cylindrical box body are tightly fixed through threads, so that the inner cavity of the box body and the sealing inner cover are further reinforced; the bottoms of the two simulation perforation wellheads are clamped into the inner cavity of the box body through the grooves and are used for respectively simulating the exciting well and the observation well; the bottom of the observation well is provided with a bottom hole pressure gauge for measuring bottom hole pressure.
2. The heterogeneous reservoir well testing analysis testing apparatus of claim 1, wherein: the two simulated perforation shaft bodies are respectively used for simulating an exciting well and an observation well, and the outer sides of the simulated perforation shaft bodies are wrapped with sand prevention cushion layers for preventing quartz sand from entering the simulated perforation shaft bodies; the parts of the two simulated perforation shafts below the sealing inner covers adopt a large-diameter design, the top of the exciting well is provided with a water injection valve, and the top of the observation well is provided with a shaft flow limiting valve; the injected water enters the filled quartz sand through the exciting well and flows out of the shaft of the observation well after flowing through the artificial reservoir rock sample, so that the well testing process is simulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910520861.5A CN110185435B (en) | 2019-06-17 | 2019-06-17 | Heterogeneous reservoir well testing analysis test device |
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| CN201910520861.5A CN110185435B (en) | 2019-06-17 | 2019-06-17 | Heterogeneous reservoir well testing analysis test device |
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| CN110185435B true CN110185435B (en) | 2023-01-17 |
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| CN114109377B (en) * | 2021-11-29 | 2023-10-20 | 常州大学 | Experimental method for simulating broken solution reservoir well test by ice burying and cave building |
| CN114109378B (en) * | 2021-11-29 | 2023-10-20 | 常州大学 | Experimental device and method system capable of simulating well test analysis of complex reservoir in series and parallel |
| CN115565445B (en) * | 2022-05-18 | 2023-08-08 | 常州大学 | Heterogeneous oil reservoir multi-well production and test simulation device and method |
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| CN109209316A (en) * | 2018-10-29 | 2019-01-15 | 中国石油大学(北京) | Well pattern simulator and its application in Displacement Efficiency under the conditions of a kind of high temperature and pressure and edge-bottom water |
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2019
- 2019-06-17 CN CN201910520861.5A patent/CN110185435B/en active Active
Patent Citations (8)
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| CN101476458A (en) * | 2008-12-03 | 2009-07-08 | 刘其成 | Oil pool development simulation system, oil pool model body and its data processing method |
| CN103485759A (en) * | 2013-09-10 | 2014-01-01 | 中国石油大学(北京) | Oil-gas well hydraulically-created-fracture expansion visualization experiment method and oil-gas well hydraulically-created-fracture expansion visualization experiment device |
| CN104196527A (en) * | 2014-08-13 | 2014-12-10 | 中国石油大学(北京) | Multilateral well productivity simulation system and multilateral well productivity simulation experimental method |
| CN104832169A (en) * | 2015-05-30 | 2015-08-12 | 重庆地质矿产研究院 | Indoor experimental shaft device and method for horizontal well two-well synchronous or asynchronous multi-section clustering fracturing |
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