CN219197316U - Shale oil high-pressure dynamic imbibition evaluation device - Google Patents
Shale oil high-pressure dynamic imbibition evaluation device Download PDFInfo
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- CN219197316U CN219197316U CN202320073379.3U CN202320073379U CN219197316U CN 219197316 U CN219197316 U CN 219197316U CN 202320073379 U CN202320073379 U CN 202320073379U CN 219197316 U CN219197316 U CN 219197316U
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Abstract
The utility model relates to the technical field of oil extraction evaluation in dense oil fields, in particular to a shale oil high-pressure dynamic imbibition evaluation device, which comprises: the bearing seat, the bottom of bearing seat is provided with the support frame, the inside of bearing seat is provided with the buffer post, the top of buffer post is provided with the movable plate, be provided with the guide way around the movable plate, the top of movable plate is provided with the overhead tank, the side of overhead tank is provided with electric heater, electric heater's top is provided with the thermometer, the internally mounted of overhead tank has the base. The utility model discloses the inside input infiltration of inside subdivision pipe and the input flange of accessible protection tube to the pressure vessel is pressed oil to measure and press shale oil reservoir imbibition rate, because the quality of pressure vessel is also changing repeatedly under the change of oil mass, like this the buffer column can absorb the impact, thereby lets the movable plate move down, thereby guarantees the steady of pressure vessel, and then prevents the safety of pressure vessel in the impact.
Description
Technical Field
The utility model relates to the technical field of oil extraction evaluation in dense oil fields, in particular to a shale oil high-pressure dynamic imbibition evaluation device.
Background
The method has the advantages that the reserves of dense oil resources at home and abroad are very rich, as the matrix permeability of the dense oil reservoir is very low, the current mainstream development mode relying on natural stratum energy failure at home and abroad can only use crude oil in the vicinity of cracks communicated by an artificial crack network, so that the final recovery rate of the oil reservoir can only reach 3-10% at most, the improvement of the wettability of the reservoir by utilizing a surfactant is already applied to the development of a conventional multi-crack carbonate oil reservoir, so that the permeability of the oil reservoir is changed in the water injection exploitation process to promote the imbibition of the matrix, thereby displacing the crude oil from the matrix to the cracks and then carrying the crude oil out by water.
In the high-temperature and high-pressure shale oil reservoir imbibition evaluation device with the publication number of CN112177608B, the document discloses a shale oil high-pressure dynamic imbibition evaluation device, which comprises a compression sleeve arranged at the bottom of a pressure tank, a rock core is arranged in the compression sleeve, a fracturing pipe is inserted in a counter bore of the rock core above the rock core, extends upwards through the compression sleeve and is in sealing connection with the compression sleeve, and the fracturing pipe passes through a flange cover of the pressure tank and is in sealing connection with the flange cover. The utility model has the following beneficial effects: the compression sleeve is arranged to separate the rock core from the outside, the oil reservoir in the rock core is not leaked and oozed, the pressure and the temperature of the outside can act on the rock core, the pressure balance of the rock core can be kept through the pressure balancer, the oil-water distribution in the gap of the compact oil reservoir core can not change, the process of injecting fracturing fluid into stratum, soaking well and imbibition displacement oil extraction is simulated, the components of the fracturing fluid are optimized, the determination of soaking well time and the research of imbibition mechanism are greatly influenced, and effective experimental equipment is provided for carrying out core imbibition experiments under high-temperature and high-pressure environments.
The prior high-temperature high-pressure shale oil reservoir imbibition evaluation device adopts a compression sleeve to separate a rock core from the outside, the oil reservoir in the rock core does not leak and exude, meanwhile, the outside pressure and temperature can act on the rock core, the pressure balance of the rock core can be kept through a pressure balancer, the oil-water distribution in the gap of a compact oil reservoir core cannot change, the pressure of filling liquid is transferred to the rock core through the compression sleeve, the filling liquid for transferring pressure cannot enter the rock core, the oil water saturation of the oil reservoir in the rock core is not affected, even if the filling liquid and the fracturing liquid are slightly changed in pressure rise, the pressure in a pressure tank and the pressure in a fracturing pipe can still be balanced and kept consistent under the action of the pressure balancer, and the simulated fracturing liquid is injected into a stratum, a stewing well and imbibition displacement oil extraction process, so that effective experimental equipment is provided for carrying out a rock core imbibition experiment under the high-temperature high-pressure environment.
Disclosure of Invention
The utility model aims to provide a shale oil high-pressure dynamic imbibition evaluation device for solving the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme: a shale oil high-pressure dynamic imbibition evaluation device, comprising:
the bearing seat, the bottom of bearing seat is provided with the support frame, the inside of bearing seat is provided with the buffer post, the top of buffer post is provided with the movable plate, be provided with the guide way around the movable plate, the top of movable plate is provided with the overhead tank, the side of overhead tank is provided with electric heater, electric heater's top is provided with the thermometer head, the internally mounted of overhead tank has the base, the top of base is provided with the compression cover, the top of compression cover is provided with the protection tube, the inside of protection tube is provided with two subdivision pipes, the top of overhead tank is provided with sealing washer, sealing washer's top is provided with the flange apron.
Preferably, the bearing seat further comprises:
the filling liquid storage tank is arranged on one side of the bearing seat, an input flange plate is connected between the filling liquid storage tank and the pressure tank, a seepage liquid storage bottle is arranged on the other side of the bearing seat, a first output pipe is arranged at the top of the seepage liquid storage bottle, a pressure balancer is arranged on one side of the protection pipe, and a second output pipe is arranged at the other end of the protection pipe.
Preferably, the filling liquid storage tank is of a communication structure between the input flange plate and the pressure tank, and the input flange plate penetrates through the side wall of the pressure tank.
Preferably, one of the subdivision pipes is communicated with the second output pipe, and the other subdivision pipe is communicated with the first output pipe.
Preferably, the flange cover plate is connected with the pressure tank through bolts, and a sealing structure is formed between the flange cover plate and the pressure tank through a sealing gasket.
Preferably, the protection tube penetrates through the flange cover plate, and the second output tube and the first output tube penetrate through the side wall of the protection tube.
Preferably, the movable plate is movably connected with the bearing seat, and the bearing seat is matched with the pressure tank in size.
The above description shows that, by the above technical solution of the present application, the technical problem to be solved by the present application can be necessarily solved.
Meanwhile, through the technical scheme, the utility model has at least the following beneficial effects:
according to the utility model, osmotic pressure oil can be input into the pressure tank through the subdivision pipe and the input flange plate in the protection pipe, so that the oil reservoir osmotic absorption rate of the shale is measured, and the quality of the pressure tank is repeatedly changed due to the change of oil quantity, so that the buffer column can absorb impact, and the movable plate can move downwards, so that the stability of the pressure tank is ensured, and the safety of the pressure tank in the impact is further prevented;
the utility model can be connected with the top of the pressure tank through the flange cover plate, so that the whole pressure tank is sealed, and the pressure oil in the pressure tank is prevented from leaking, thereby being convenient for experiments;
the utility model can be connected with the inside of the seepage liquid storage bottle and the compression sleeve and the inside of the fracturing liquid storage tank 17 and the compression sleeve respectively through the two subdivision pipes, and the protection pipe can play a role in protecting the subdivision pipes and is convenient for the installation of the pressure balancer.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the pressure tank structure of the present utility model;
FIG. 3 is a schematic view of a carrier structure according to the present utility model;
fig. 4 is a schematic diagram of a sectional structure of a pressure tank according to the present utility model.
In the figure: 1. a bearing seat; 2. filling the liquid storage tank; 3. an input flange; 4. a seepage liquid storage bottle; 5. a first output tube; 6. a protective tube; 7. a second output pipe; 8. a pressure balancer; 9. a flange cover plate; 10. a thermometer head; 11. a pressure tank; 12. an electric heater; 13. a support frame; 14. a sealing gasket; 15. a compression sleeve; 16. a dividing pipe; 17. a base; 18. a buffer column; 19. a guide groove; 20. and (3) moving the plate.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Description of the preferred embodiments
As shown in fig. 1, 2 and 3, the present utility model provides a technical solution: a shale oil high-pressure dynamic imbibition evaluation device, comprising: the device comprises a bearing seat 1, wherein a supporting frame 13 is arranged at the bottom of the bearing seat 1, a buffer column 18 is arranged in the bearing seat 1, a movable plate 20 is arranged at the top of the buffer column 18, guide grooves 19 are formed in the periphery of the movable plate 20, the movable plate 20 is movably connected with the bearing seat 1, and the bearing seat 1 is matched with a pressure tank 11 in size; the top of movable plate 20 is provided with pressure tank 11, the side of pressure tank 11 is provided with electric heater 12, the top of electric heater 12 is provided with thermometer 10, the internally mounted of pressure tank 11 has base 17, the top of base 17 is provided with compression sleeve 15, the top of compression sleeve 15 is provided with protection tube 6, the inside of protection tube 6 is provided with two subdivision pipes 16, the top of pressure tank 11 is provided with sealing washer 14, the top of sealing washer 14 is provided with flange apron 9, be bolted connection between flange apron 9 and the pressure tank 11, and flange apron 9 passes through sealing washer 14 and constitutes seal structure between pressure tank 11, accessible flange apron 9 connects pressure tank 11 top, and then seal up whole pressure tank 11, prevent its inside pressure oil leakage, thereby be convenient for the experiment, through the inside subdivision pipe 16 of protection tube 6 and input flange 3 to the inside input osmotic pressure oil of pressure tank 11, thereby measure the osmotic rate of pressure shale oil reservoir, because the quality of pressure tank 11 also is changing repeatedly, buffer column 18 can absorb the impact, thereby make movable plate 20 remove steadily, thereby guarantee that pressure tank 11 is in the safety and the safety of pressure tank 11 is followed.
Example two
The scheme in the first embodiment is further described below in conjunction with a specific working manner, and the details are described below:
as shown in fig. 1, 2 and 4, as a preferred embodiment, in addition to the above-mentioned embodiments, a filling liquid tank 2 is further provided, in which an input flange 3 is connected between the filling liquid tank 2 and the pressure tank 11 on one side of the carrier 1, the filling liquid tank 2 is in a communication structure with the pressure tank 11 through the input flange 3, and the input flange 3 penetrates through a side wall of the pressure tank 11; the other side that bears seat 1 is provided with oozes liquid storage bottle 4, oozes liquid storage bottle 4's top is provided with first output tube 5, one side of protection tube 6 is provided with pressure equalizer 8, the other end of protection tube 6 is provided with second output tube 7, protection tube 6 runs through in flange apron 9's inside, and second output tube 7 and first output tube 5 all run through in protection tube 6 lateral wall, communicate each other between minute pipe 16 and second output tube 7, and communicate each other between another minute pipe 16 and the first output tube 5, inside oozes liquid storage bottle 4 and compression cover 15 and fracturing fluid storage tank and compression cover 15 are connected respectively to accessible two minute pipes 16, protection tube 6 can play the effect of protection minute pipe 16, be convenient for pressure equalizer 8 installation simultaneously.
From the above, it can be seen that:
the utility model aims at the technical problems that: because the device is in the measuring process, the oil quantity is always changed, the quality is also always changed, and the ground of a laboratory can be damaged for a long time; the technical scheme of each embodiment is adopted. Meanwhile, the implementation process of the technical scheme is as follows: loading a core sample from the bottom of a compression sleeve 15, sealing the core sample in the compression sleeve 15, supporting the compression sleeve 15 with the sample on the inside of a pressure tank 11 by a base 17, allowing the periphery of the compression sleeve 15 to bear the influence of pressure and temperature and transmit the influence to the core sample, inserting a subdivision tube 16 into the pressure tank 11 and the compression sleeve 15, sealing the protection tube 6 with the pressure tank 11 and the compression sleeve 15, and inserting the subdivision tube 16 into a counter bore of the core sample; then, starting a filling liquid booster pump, boosting the filling liquid in the filling liquid storage tank 2, sending the filling liquid into the pressure tank 11 through the input flange plate 3, opening an exhaust valve to exhaust air, closing the exhaust valve after the filling liquid fills the pressure tank 11, boosting the filling liquid booster pump and the fracturing liquid booster pump simultaneously, opening a valve on the second output pipe 7, closing a valve on the first output pipe 5 of the imbibition liquid storage bottle 4, boosting the pressure simultaneously, enabling an oil reservoir in a core sample to be stressed in two directions, enabling oil-water distribution in a gap of the core sample not to change, enabling the pressure of the filling liquid to be transmitted to the core sample through the compression sleeve 15, enabling the filling liquid with the transmission pressure not to enter the core sample, and keeping the oil saturation of the oil reservoir in the core sample not affected; then, the periphery of the core sample bears pressure, the pressure value is the same as that in stratum, the original state of the core sample is kept, the filling liquid booster pump on the filling liquid storage tank 2 is closed, the pressure in the pressure tank 11 is not reduced due to the fact that a one-way valve is arranged on a pipeline of the filling liquid storage tank 2 and the pipeline of the filling liquid storage tank 3, a circuit of an electromagnetic coil at the rear side of the pressure balancer 8 is connected, so that the pressure balancer 8 loses the pressure balance effect, the output pressure of the fracturing booster pump on the second output pipe 7 is changed, at the moment, the pressure in the pressure tank 11 changes, the core sample bears the pressure of the fracturing booster pump, when the pressure of the fracturing operation is set, the core sample is subjected to fracturing, the fracturing booster pump is closed after the fracturing operation is finished, the fracturing pressure is kept, the simulated well soaking stage is started, meanwhile, the electric heater 12 is started to control the temperature of the filling liquid and the fracturing liquid, the absorption degree at different temperatures is simulated, and the one-way valve is also arranged on the second output pipe 7, so that the oil water in the process of the core sample is replaced by the oil water in the process of seepage, the oil-sucking and the oil-permeable layer on the first output pipe 5 is opened, and the oil-permeable layer is sucked out, so that the high-pressure shale is evaluated; finally, the mass of the pressure tank 11 is repeatedly changed under the change of the oil mass, so that the buffer column 18 can absorb the impact, and the moving plate 20 can move downwards, so that the stability of the pressure tank 11 is ensured, and the safety of the pressure tank 11 in the impact is further prevented.
Through above-mentioned setting, this application must solve above-mentioned technical problem, simultaneously, realizes following technical effect:
according to the utility model, osmotic pressure oil can be input into the pressure tank 11 through the subdivision pipe 16 and the input flange 3 in the protection pipe 6, so that the oil reservoir permeability of the shale is measured, and the mass of the pressure tank 11 is repeatedly changed due to the change of oil quantity, so that the buffer column 18 can absorb impact, and the movable plate 20 can move downwards, so that the stability of the pressure tank 11 is ensured, and the safety of the pressure tank 11 in impact is further prevented;
the utility model can be connected with the top of the pressure tank 11 through the flange cover plate 9, so that the whole pressure tank 11 is sealed, and the pressure oil in the pressure tank is prevented from leaking, thereby being convenient for experiments;
according to the utility model, the two subdivision pipes 16 are respectively connected with the inside of the seepage liquid storage bottle 4 and the compression sleeve 15 and the inside of the fracturing liquid storage tank and the compression sleeve 15, the protection pipe 6 can play a role in protecting the subdivision pipes 16, and meanwhile, the pressure balancer 8 is convenient to install.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The shale oil high-pressure dynamic imbibition evaluation device is characterized by comprising:
bear seat (1), the bottom of bearing seat (1) is provided with support frame (13), the inside of bearing seat (1) is provided with buffer post (18), the top of buffer post (18) is provided with movable plate (20), be provided with guide way (19) around movable plate (20), the top of movable plate (20) is provided with overhead tank (11), the side of overhead tank (11) is provided with electric heater (12), the top of electric heater (12) is provided with thermometer head (10), internally mounted of overhead tank (11) has base (17), the top of base (17) is provided with compression cover (15), the top of compression cover (15) is provided with protection tube (6), the inside of protection tube (6) is provided with two minute branch pipes (16), the top of overhead tank (11) is provided with sealing washer (14), the top of sealing washer (14) is provided with flange apron (9).
2. Shale oil high-pressure dynamic imbibition evaluation device according to claim 1, characterized in that the bearing seat (1) further comprises:
filling liquid storage tank (2), its installation one side of bearing seat (1), be connected with input flange (3) between filling liquid storage tank (2) and pressure tank (11), the opposite side of bearing seat (1) is provided with oozes liquid storage bottle (4), the top of oozes liquid storage bottle (4) is provided with output tube (5) No. one, one side of protection tube (6) is provided with pressure equalizer (8), the other end of protection tube (6) is provided with output tube (7) No. two.
3. The shale oil high-pressure dynamic imbibition evaluation device according to claim 2, wherein the filling liquid storage tank (2) is of a communication structure between the input flange plate (3) and the pressure tank (11), and the input flange plate (3) penetrates through the side wall of the pressure tank (11).
4. The shale oil high-pressure dynamic imbibition evaluation device according to claim 2, wherein one subdivision pipe (16) is communicated with the second output pipe (7), and the other subdivision pipe (16) is communicated with the first output pipe (5).
5. The shale oil high-pressure dynamic imbibition evaluation device according to claim 1, characterized in that the flange cover plate (9) is connected with the pressure tank (11) through bolts, and the flange cover plate (9) and the pressure tank (11) form a sealing structure through a sealing gasket (14).
6. The shale oil high-pressure dynamic imbibition evaluation device according to claim 2, wherein the protection tube (6) penetrates through the flange cover plate (9), and the second output tube (7) and the first output tube (5) penetrate through the side wall of the protection tube (6).
7. The shale oil high-pressure dynamic imbibition evaluation device according to claim 1, wherein the movable plate (20) is movably connected with the bearing seat (1), and the bearing seat (1) is matched with the pressure tank (11) in size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320073379.3U CN219197316U (en) | 2023-01-10 | 2023-01-10 | Shale oil high-pressure dynamic imbibition evaluation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320073379.3U CN219197316U (en) | 2023-01-10 | 2023-01-10 | Shale oil high-pressure dynamic imbibition evaluation device |
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| Publication Number | Publication Date |
|---|---|
| CN219197316U true CN219197316U (en) | 2023-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320073379.3U Active CN219197316U (en) | 2023-01-10 | 2023-01-10 | Shale oil high-pressure dynamic imbibition evaluation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219197316U (en) |
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2023
- 2023-01-10 CN CN202320073379.3U patent/CN219197316U/en active Active
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