CN202250056U - Evaluation test device for simulating formation damage by oily sewage - Google Patents
Evaluation test device for simulating formation damage by oily sewage Download PDFInfo
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- CN202250056U CN202250056U CN2011203673895U CN201120367389U CN202250056U CN 202250056 U CN202250056 U CN 202250056U CN 2011203673895 U CN2011203673895 U CN 2011203673895U CN 201120367389 U CN201120367389 U CN 201120367389U CN 202250056 U CN202250056 U CN 202250056U
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Abstract
The utility model relates to an evaluation test device for simulating formation damage by oily sewage. A rock core is arranged in the middle of a cylinder body of a rock core clamp; a sealing gasket is covered on each one of the upper end face and the lower end face of the rock core; a sealing metal board is arranged at the outer side of each sealing gasket; a lower sealing board is arranged below the lower sealing metal board; the lower sealing board is screwed with the lower end opening of the cylinder body; an annular pressing cavity is arranged above an upper sealing metal board; a cylinder cover is arranged above the annular pressing cavity; a convex column is arranged at the middle part of the upper end face of the cylinder cover; an upper sealing board is sleeved on the convex column and screwed with the upper end opening of the cylinder body; a rock core center hole extending along an axis of the rock core is arranged on the rock core; a liquid collection groove is arranged between the circumference of the rock core and the inner wall of the cylinder body; a liquid collection groove outlet is arranged on the outer wall of the cylinder body and is communicated with the liquid collection groove; a water injection opening of the annular pressing cavity is arranged at the upper end of the convex column of the cylinder cover and is communicated with the annular pressing cavity; a sewage injection pipe is inserted into the convex column of the cylinder cover from top to bottom; and the outlet of the sewage injection pipe is in the butt joint with the rock core centre hole. The device can carry out a damage test on return water which is in a radial stream state in the rock core.
Description
Technical field
The utility model relates to a kind of evaluation experimental device of simulating oil-polluted water to reservoir damage, belongs to oil-field flooding experimental facilities technical field, is used for oil-field flooding process return water the injury of reservoir is made an experiment.
Background technology
Return water is generally taked core flooding test device to the injury of reservoir in the indoor evaluating oilfield the injecting process, and the current experiments device comprises support, core holding unit, ring press pump and water injecting pump, and rock core is arranged in core holding unit; Ring press pump injection ring setting-out seals the outer circumferential walls of rock core; Water injecting pump injects sewage to rock core one end, and sewage sees through rock core along the rock core axis direction, flows out from the rock core other end; Be under the experimental state, sewage flows for linear flow but not radial flow along rock core.The core damage rate of this core flooding test device under can only analog linearity stream condition, and oilfield injection water is a radial flow at the mobile of stratum, present core flooding test device can not the real simulation reservoir water filling injury rule.
In addition, rock core adopts natural core or artificial core, and artificial core generally adopts mineral such as quartz or corundum carbonate rock; Rock core can not reuse; Because all there is certain difference between every block of rock core, so the often very difficult repetition of experimental result, the experimental result comparativity is poor.
The utility model content
The purpose of the utility model is, overcomes the problem that exists in the prior art, and a kind of evaluation experimental device of simulating oil-polluted water to reservoir damage is provided, and can injure experiment to return water is radial flow in rock core state.
For solving above technical problem; A kind of evaluation experimental device of simulating oil-polluted water to reservoir damage that the utility model provided comprises support, core holding unit, ring press pump and water injecting pump, and said core holding unit comprises cylindrical barrel body; Rock core places said cylindrical shell middle part; Two end faces up and down of said rock core are coated with seal gasket respectively, and the outside of said seal gasket is respectively equipped with sealing metal plate and lower seal metal sheet, and the below of said lower seal metal sheet is provided with down shrouding; Said down shrouding is screwed on the lower port of cylindrical shell its sealing; Said top of going up the sealing metal plate is provided with ring and presses the chamber, and said ring presses the top in chamber to be provided with cover, and the middle part, upper surface of said cover is provided with projection; Upper sealing plate is sleeved on the said projection and the port that is screwed in said cylindrical shell is sealed it, is embedded with sealing ring respectively on the said circumference of going up sealing metal plate, lower seal metal sheet and cover and realizes sealing with said cylindrical shell; Said rock core is provided with the rock core centre bore that extends along the rock core axis, is provided with collecting tank between the periphery of said rock core and the said cylinder inboard wall, and the outer wall of said cylindrical shell is provided with the collecting tank outlet and is communicated with said collecting tank; The projection upper end of said cover is provided with ring and presses chamber water filling port and said ring to press the chamber to be communicated with, and the sewage ascending pipe inserts in the projection of said cover from top to bottom, and its outlet is docked with said rock core centre bore.
With respect to prior art; The utility model has been obtained following beneficial effect: go up sealing metal plate, lower seal metal sheet and cover and realize sealing through sealing ring and cylindrical shell; Rock core be provided with centre bore and up and down two end faces seal gasket is set, can avoid occurring sewage and flow along the rock core axis direction; During experiment, press the chamber water filling port to press the chamber to inject clear water to ring through ring earlier, ring is pressed the upper-lower seal of chamber crush seal metal sheet and the descending realization rock core of seal gasket; In the rock core centre bore, inject sewage through the sewage ascending pipe again, the mode that sewage is radial flow sees through the outer collecting tank of rock core entering rock core circumference, flows out from the collecting tank outlet then; So promptly can injure experiment to return water is radial flow in rock core state.
As the preferred version of the utility model, the outer wall of said cylindrical shell is coated with the water-bath chamber, and the lower end in said water-bath chamber is provided with circulating water intake, and the upper end in said water-bath chamber is provided with circulating water outlet.Regulate the temperature in water-bath chamber and promptly can control core temperature, thus the temperature environment under the accurate simulated formation.
As the further preferred version of the utility model, the outer wall of said cylindrical shell middle part is arranged with a pair of lug, and two said lugs are supported on the said support.After experiment finishes, can be with cylindrical shell around lug axis half-twist, so that take off rock core easily.
Description of drawings
Fig. 1 is the structural representation of the utility model simulation oil-polluted water to core holding unit in the evaluation experimental device of reservoir damage.
Among the figure: 1. support; 2. cylindrical shell; 2a. lug; 3. rock core; 3a. rock core centre bore; 4. seal gasket; 5. go up the sealing metal plate; 5 '. the lower seal metal sheet; 6. sealing ring; 7. collecting tank; 7a. collecting tank outlet; 8. ring is pressed the chamber; 9. cover; 9a. ring is pressed the chamber water filling port; 9b. sewage ascending pipe; 10. upper sealing plate; 11. following shrouding; 12. water-bath chamber; 12a. circulating water intake; 12b. circulating water outlet.
The specific embodiment
As shown in Figure 1; The simulation oil-polluted water of the utility model comprises support 1, core holding unit, ring press pump and water injecting pump to the evaluation experimental device of reservoir damage, and core holding unit comprises cylindrical barrel body 2; The outer wall middle part of cylindrical shell 2 is arranged with a pair of lug 2a, and two lug 2a are supported on the support 1.Rock core 3 places the cylindrical shell middle part; Two end faces up and down of rock core 3 are coated with seal gasket 4 respectively, and the outside of seal gasket 4 is respectively equipped with sealing metal plate 5 and lower seal metal sheet 5 ', and the below of lower seal metal sheet 5 ' is provided with down shrouding 11; Following shrouding 11 is screwed on the lower port of cylindrical shell 2 its sealing; The top of last sealing metal plate 5 is provided with ring and presses chamber 8, and ring presses the top in chamber 8 to be provided with cover 9, and the middle part, upper surface of cover 9 is provided with projection; Upper sealing plate 10 is sleeved on the projection and the port that is screwed in cylindrical shell 2 is sealed it, is embedded with sealing ring 6 respectively on the circumference of last sealing metal plate 5, lower seal metal sheet 5 ' and cover 9 and realizes sealing with cylindrical shell; Rock core 3 is provided with the rock core centre bore 3a that extends along the rock core axis, is provided with collecting tank 7 between the periphery of rock core 3 and the cylinder inboard wall, and the outer wall of cylindrical shell 2 is provided with collecting tank outlet 7a and is communicated with collecting tank 7; The projection upper end of cover 9 is provided with ring and presses chamber water filling port 9a and ring to press chamber 8 to be communicated with, and sewage ascending pipe 9b inserts in the projection of cover 9 from top to bottom, and its outlet is docked with rock core centre bore 3a.
The outer wall of cylindrical shell 2 is coated with water-bath chamber 12, and the lower end in water-bath chamber 12 is provided with circulating water intake 12a, and the upper end in water-bath chamber is provided with circulating water outlet 12b, regulates the temperature in water-bath chamber and promptly can control core temperature.
During experiment, press chamber water filling port 9a to press chamber 8 to inject clear water to ring through ring earlier, ring is pressed the upper-lower seal of chamber 8 crush seal metal sheets and the descending realization rock core 3 of seal gasket; In rock core centre bore 3a, inject sewage through sewage ascending pipe 9b again, the mode that sewage is radial flow sees through the outer collecting tank 7 of rock core entering rock core circumference, flows out from collecting tank outlet 7a then; So promptly can injure experiment to return water is radial flow in rock core state.
Rock core is processed by ceramic materials, adopts varigrained kaolin to press down at different pressures and processes mould, is fired into the ceramic rock core of different permeabilities then, and experiment shows that this rock core is acidproof, alkaline-resisting.Through an experimental period, rock core is stopped up by the oil emulsion of sewage kind and suspended solid, and agent alive is handled through certain density mud acid and table; Oil emulsion and suspended solid are dissolved; Through flushing with clean water, core permeability can return to initial permeability again, carries out next one experiment then.Like this, the rock core material behavior of twice experiment usefulness, permeability be basically identical all, so experimental data has comparativity.
Except that the foregoing description, the utility model can also have other embodiments.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (3)
1. evaluation experimental device of simulating oil-polluted water to reservoir damage; Comprise support, core holding unit, ring press pump and water injecting pump; It is characterized in that: said core holding unit comprises cylindrical barrel body, and rock core places said cylindrical shell middle part, and two end faces up and down of said rock core are coated with seal gasket respectively; The outside of said seal gasket is respectively equipped with sealing metal plate and lower seal metal sheet; The below of said lower seal metal sheet is provided with down shrouding, and said down shrouding is screwed on the lower port of cylindrical shell its sealing, and said top of going up the sealing metal plate is provided with ring and presses the chamber; Said ring presses the top in chamber to be provided with cover; Middle part, the upper surface of said cover is provided with projection, and upper sealing plate is sleeved on the said projection and the port that is screwed in said cylindrical shell is sealed it, is embedded with sealing ring respectively on the said circumference of going up sealing metal plate, lower seal metal sheet and cover and realizes sealing with said cylindrical shell; Said rock core is provided with the rock core centre bore that extends along the rock core axis, is provided with collecting tank between the periphery of said rock core and the said cylinder inboard wall, and the outer wall of said cylindrical shell is provided with the collecting tank outlet and is communicated with said collecting tank; The projection upper end of said cover is provided with ring and presses chamber water filling port and said ring to press the chamber to be communicated with, and the sewage ascending pipe inserts in the projection of said cover from top to bottom, and its outlet is docked with said rock core centre bore.
2. simulation oil-polluted water according to claim 1 is to the evaluation experimental device of reservoir damage; It is characterized in that: the outer wall of said cylindrical shell is coated with the water-bath chamber; The lower end in said water-bath chamber is provided with circulating water intake, and the upper end in said water-bath chamber is provided with circulating water outlet.
3. simulation oil-polluted water according to claim 1 and 2 is characterized in that the evaluation experimental device of reservoir damage: the outer wall middle part of said cylindrical shell is arranged with a pair of lug, and two said lugs are supported on the said support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203673895U CN202250056U (en) | 2011-09-29 | 2011-09-29 | Evaluation test device for simulating formation damage by oily sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203673895U CN202250056U (en) | 2011-09-29 | 2011-09-29 | Evaluation test device for simulating formation damage by oily sewage |
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| Publication Number | Publication Date |
|---|---|
| CN202250056U true CN202250056U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203673895U Expired - Lifetime CN202250056U (en) | 2011-09-29 | 2011-09-29 | Evaluation test device for simulating formation damage by oily sewage |
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| Country | Link |
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| CN (1) | CN202250056U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184865A (en) * | 2012-12-18 | 2013-07-03 | 中国石油化工股份有限公司 | Variable-temperature-field displacement simulator for multi-thermal fluid |
| CN103334726A (en) * | 2013-07-04 | 2013-10-02 | 中国石油大学(华东) | Variable high-temperature high-pressure visual rock core model holding device |
| CN105156081A (en) * | 2014-06-10 | 2015-12-16 | 中国石油化工股份有限公司 | Simulating and evaluating method for acidification of carbonate heavy-oil reservoir |
| CN110346386A (en) * | 2019-06-27 | 2019-10-18 | 中国石油大学(华东) | A kind of reservoir damage test device being convenient to clean |
-
2011
- 2011-09-29 CN CN2011203673895U patent/CN202250056U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103184865A (en) * | 2012-12-18 | 2013-07-03 | 中国石油化工股份有限公司 | Variable-temperature-field displacement simulator for multi-thermal fluid |
| CN103184865B (en) * | 2012-12-18 | 2015-07-08 | 中国石油化工股份有限公司 | Variable-temperature-field displacement simulator for multi-thermal fluid |
| CN103334726A (en) * | 2013-07-04 | 2013-10-02 | 中国石油大学(华东) | Variable high-temperature high-pressure visual rock core model holding device |
| CN105156081A (en) * | 2014-06-10 | 2015-12-16 | 中国石油化工股份有限公司 | Simulating and evaluating method for acidification of carbonate heavy-oil reservoir |
| CN105156081B (en) * | 2014-06-10 | 2018-05-08 | 中国石油化工股份有限公司 | A kind of carbonate rock heavy crude reservoir is acidified simulation evaluation method |
| CN110346386A (en) * | 2019-06-27 | 2019-10-18 | 中国石油大学(华东) | A kind of reservoir damage test device being convenient to clean |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
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| CX01 | Expiry of patent term |