CN202100255U - Multistage cylinder barrel cutting and simulating device with sand prevention compaction sand body in near well bore area - Google Patents
Multistage cylinder barrel cutting and simulating device with sand prevention compaction sand body in near well bore area Download PDFInfo
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- CN202100255U CN202100255U CN2010206791460U CN201020679146U CN202100255U CN 202100255 U CN202100255 U CN 202100255U CN 2010206791460 U CN2010206791460 U CN 2010206791460U CN 201020679146 U CN201020679146 U CN 201020679146U CN 202100255 U CN202100255 U CN 202100255U
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Abstract
The utility model provides a multistage cylinder barrel cutting and simulating device with a sand prevention compaction sand body in a near well bore area. The device comprises a multistage cylinder barrel body which consists at least two cylinder barrel bodies with unequal diameters; a sealing cover A and a sealing cover B are arranged on the multistage cylinder barrel body; the sealing cover A is positioned at the first-stage cylinder barrel body end, and a sealing pipe line connector a and a sealing pipe line connector b are respectively arranged on the sealing cover A and the sealing cover B; an annular cylinder which is in interference fit with the first-stage cylinder barrel body is arranged in the first-stage cylinder barrel body; a cement sand body is arranged between the lower surface of the circle cylinder and the sealing cover B, and cylinder holes which are communicated with the inner cavity of the circle cylinder are arranged in the cement sand body; compaction sand bodies are arranged in the cylinder holes, in the inner cavity of the circle cylinder and between the upper surface of the circle cylinder and the sealing cover A. The cutting and simulating device can be widely used in the process of improving recovery ratio in the oil field chemical flooding.
Description
Technical field
The utility model relates to a kind of near wellbore zone and shears analogue means, belongs to the oil field and annotates the near wellbore zone shearing analogue means that gathers in the lab simulation technology that improves recovery ratio in the field.
Background technology
Polymer flooding has become one of important technology that improves recovery ratio in the oilfield development process.Gather the design for scheme stage at notes; The polymer solution performance is gathered schematic design to notes and is played crucial effects; What relate in the schematic design all should be the performance of solution under the actual reservoir condition about the parameter of polymer solution performance; For parameters such as the viscosity under these actual reservoir conditions, rheological characteristics, the approach that obtains at present is divided into the scene and obtains with lab simulation and obtain two kinds, and the scene obtains exactly in annotating collecting process through the sampling of drill sampling well or annotates nitrogen at injection well and return row's sampling (Geng Yuguang; Li Shanwei, Weng Yanping etc. the guiding experimental study of North China Oilfield tertiary oil recovery [J]. drilling technology .1998; Zhang Zhen China etc. the on-the-spot pilot test technology of polymer displacement of reservoir oil [M]. Beijing: the on-the-spot pilot test technology of polymer displacement of reservoir oil, 1996:207; Wang Youqi, Zhang Yigen, Jiang Yanbo etc. several problems [J] of impact polymer mining site implementation result. oilfield chemistry .1999:244-246.); Indoor can only be through the simulation of polymer solution being sheared the solution property that obtain after shear its near wellbore zone; The accuracy of simulation cutting method directly has influence on the reasonability and the accuracy of oil reservoir programming, dynamic tracking and enforcement prediction, and final influence is annotated and gathered development effectiveness.At present; Shear the polymer solution Effect on Performance desk research near wellbore zone; Main employing WARING agitator (Zhang Qunzhi, Zhao Wenqiang, Chen Suping etc. different cut modes are to the influence [J] of polymer solution and gelling performance. oilfield chemistry .2008:256-260; China National Offshore Oil Corporation's technical standard. the offshore oilfield displacement of reservoir oil is with acrylic amide salt tolerant polymer properties index and detection method [S]. China National Offshore Oil Corporation; 2006.), rock core pressure reduction shear (China National Offshore Oil Corporation's technical standard. the offshore oilfield displacement of reservoir oil is with acrylic amide salt tolerant polymer properties index and detection method [S]. China National Offshore Oil Corporation, 2006; Yang Huaijun, Zhang Jie, Zhang Jingchun. association polymer solution core shear rheology behavioral study [J]. the journal .2007:102-105 of Southwest Petrol University; China National Petroleum Corporation's technical standard. the displacement of reservoir oil is with acrylamide copolymer performance measurement [S]. China National Petroleum Corporation (CNPC); 1993:1994-1-6.), capillary tube shears (Zhou Haigang; Du Canmin, punishment will army. polymer gathers analog study [J] .2003:247-249 that degrades in the pipeline at notes; China National Petroleum Corporation's technical standard. the displacement of reservoir oil is with acrylamide copolymer performance measurement [S]. China National Petroleum Corporation (CNPC), 2007.) etc. method study.Utilize the WARING agitator to shear polymer solution and be actually pure mechanical shearing, because the difference of cut mode and stratum filtration cut mode, so it can not truly reflect the actual conditions that polymer solution is sheared when getting into the stratum.The method that rock core is sheared is to utilize injection pump to make polymer solution in the intermediate receptacle through the core holding unit of simulation rock core is housed, thereby realizes the shearing to polymer solution; The equipment that this method needs mainly comprises injection pump; Intermediate receptacle; Parts such as core holding unit can be sheared later solution property by simulating polymer solution to a certain extent, but this method is because shear rate is discontinuous variation; The shearing of certain point can not be simulated shearing and other effects to polymer that flow velocity continuous acute variation near wellbore zone causes in can only simulated formation.Capillary tube is sheared owing to be that polymer is in the inner mobile generation of capillary tube; Its flow regime is pipe stream; Different with the flow regime of stratum filtration, cut mode is also different with the stratum filtration shearing, so it can not truly reflect the actual conditions that polymer solution is sheared when getting into the stratum.
To sum up; Existing simulation cutting method there are differences in many-sides such as cut mode, shear distance, shear strength, shearing medium and actual conditions; Cause existing evaluation method can not well estimate the near wellbore zone and shear the influence that the polymer solution performance is produced, therefore in the lab simulation process, have limitation.
Summary of the invention
The purpose of the utility model provides a kind of near wellbore zone analogue means that can be at aspects such as cut mode, shear distance, shear strength, shearing media all coincide with actual conditions; Realize the variation of shear strength and shear distance through the device shape variation; Through adopting same or analogous percolating medium to realize the unanimity of cut mode, make the near wellbore zone seepage environment of simulating more near actual conditions.
A kind of near wellbore zone that the utility model provides is sheared analogue means and is comprised the multistage cylindrical tube of being made up of at least two not isometrical cylindrical tubes; Said multistage cylindrical tube is provided with seal cover A and seal cover B; Said seal cover A is positioned at the said cylindrical tube end of the first order, is respectively equipped with sealed tube wire terminal a and sealed tube wire terminal b on said seal cover A and the seal cover B; Be provided with the circle ring column of interference fit with it in the said cylindrical tube of the first order; Be provided with glued sand body between the soffit of said circle ring column and the said seal cover B, be provided with cylindrical hole in the said glued sand body with the intracavity inter-connection of said circle ring column; In the said cylindrical hole, the neutralization of the inner chamber of said circle ring column states between upper surface and the said seal cover A of circle ring column and is equipped with the compacting sand body.
Above-mentioned analogue means, said seal cover A are with said multistage cylindrical tube with seal cover B that thread seal is connected or interference fit, for said round table-like cylindrical shell plays sealing function.Said seal cover A and seal cover B all can be processed by the material of ability bearing certain pressure.
Above-mentioned analogue means, said seal cover A is that thread seal is connected or interference fit with said sealed tube wire terminal a, said sealed tube wire terminal a can closely be connected so that fluid course to be provided with indoor displacement pipeline.
Above-mentioned analogue means, said seal cover B is that thread seal is connected or interference fit with said sealed tube wire terminal b, said sealed tube wire terminal b can closely be connected so that fluid course to be provided with indoor displacement pipeline.
Above-mentioned analogue means, said multistage cylindrical tube is provided with at least one sample tap; Said sample tap is provided with seal cover C; Said seal cover C is that thread seal is connected or interference fit with said multistage cylindrical tube.Displacement working solution sample can be obtained through said sample tap, thereby its pressure and other parameters can be tested.Obsolete the time, can use seal cover C to seal the passage of said sample tap.
Above-mentioned analogue means, the number of said sample tap can be regulated as required.
Above-mentioned analogue means, said circle ring column are annulus cement column, annulus stainless steel cylinder or annulus alloy steel cylinder; The height of said circle ring column is less than the height of the said cylindrical tube of the first order; The said cylindrical tube of the soffit of said circle ring column and the first order overlaps with the interface of the said cylindrical tube in the second level; The thickness of said circle ring column can adopt bit size and hole enlargement situation thereof to confirm according to actual casing size and drilling well, the interior ring diameter of said circle ring column and the perforating bullet model of realistic objective well coupling.
Above-mentioned analogue means, the diameter of said cylindrical hole is more than or equal to the interior ring diameter of said circle ring column; The height of said cylindrical hole is less than the height of said glued sand body; Said cylindrical hole is used for the analogue perforation borehole, and ring diameter is intended the perforating bullet model parameter of simulating with highly depending in it.
Above-mentioned analogue means, the surface of the said seal cover A of said compacting sand body is provided with filter; Said filter can be screen casing, screen cloth or filter screen; Said filter mainly is used for simulating the sand control screen in the oil well.
Above-mentioned analogue means, the permeability of said glued sand body, degree of porosity are consistent or close with the stratigraphic facies related parameter of target well, and the material that is adopted can be the sand of appearing, quartz sand, glass microballoon or haydite etc.
Above-mentioned analogue means, said compacting sand body mainly are to be used for simulating between said filter and the said circle ring column and the interior gravel for the sand control filling of said cylindrical hole; The permeability of said compacting sand body, degree of porosity are consistent or close with the sand control parameter of target well.
Above-mentioned analogue means, the diameter of said multistage cylindrical tube is held to seal cover B end increase successively from seal cover A.
The shearing analogue means of the utility model has been owing to adopted above technical scheme, can analog operation liquid in the near wellbore zone during stratum filtration because the percolating medium that causes apart from the variation of wellbore centre distance and the variation of seepage velocity; Can simulate because the cut mode that the variation of percolating medium causes changes; Can simulate the near wellbore zone and shear the polymer solution changes of properties that causes.The shearing analogue means that the utility model provides can be widely used in oilfield chemistry and drive in the raising recovery ratio technology.
Description of drawings
Fig. 1 is the overall structure sketch map that analogue means is sheared in the near wellbore zone of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further, but the utility model is not limited to following examples.
It is as shown in Figure 1 that analogue means is sheared in the near wellbore zone of the utility model; Each mark is following among the figure: 1 sealed tube wire terminal a, 2 seal cover A, 3 screen casings, 4 compacting quartz sand bodies, 5 sample taps, 6 perforate sleeve pipes, 7 annulus cement columns, 8; 14,15 cylindrical tubes, 9 cylindrical holes, 10 seal cover C, 11 glued quartz sand bodies, 12 seal cover B, 13 sealed tube wire terminal b.
The shearing analogue means of the utility model comprises three grades of cylindrical tubes; These three grades of cylindrical tubes comprise first order cylindrical tube 8, second level cylindrical tube 14 and third level cylindrical tube 15; The diameter of cylindrical tube 14, cylindrical tube 8 and cylindrical tube 15 increases successively, is used to provide the seepage channel of radial variations; These three grades of cylindrical tubes are provided with seal cover A2 and seal cover B12, are used for these three grades of cylindrical tubes are played sealing process; Seal cover A2 and seal cover B12 process by stainless steel; Seal cover A2 and seal cover B12 all are tightly connected through screw thread and this three grades of cylindrical tubes; Seal cover A2 is provided with sealed tube wire terminal a1, and seal cover A2 is connected through thread seal with sealed tube wire terminal a1, is used for closely being connected so that fluid course to be provided with indoor displacement pipeline; Seal cover B12 is provided with sealed tube wire terminal b13, and seal cover B12 is connected through thread seal with sealed tube wire terminal b13, is used for closely being connected so that fluid course to be provided with indoor displacement pipeline; Multistage cylindrical tube is provided with 3 sample taps 5, in needs, can be communicated with these three grades of cylindrical tubes extraneous, carries out performance test thereby obtain working solution; Sample tap 5 is provided with seal cover C10, obsolete the time, can use the passage of seal cover C10 sealing sample tap 5; Be provided with the annulus cement column 7 with cylindrical tube 8 interference fit in the cylindrical tube 8, the soffit of annulus cement column 7 and cylindrical tube 14 overlap with the interface of cylindrical tube 8, and the height of annulus cement column 7 is less than the height of cylindrical tube 8; Annulus cement column 7 is provided with perforate sleeve pipe 6, and the perforate size of perforate sleeve pipe 6 equates with the interior ring diameter of annulus cement column 7; Be provided with glued quartz sand body 11 between the soffit of annulus cement column 7 and the seal cover B12, the permeability of glued quartz sand body 11 is consistent with the stratigraphic facies related parameter of target well with degree of porosity; Be provided with the cylindrical hole 9 with the intracavity inter-connection of annulus cement column 7 in the glued quartz sand body 11, be used for the analogue perforation borehole, the diameter of cylindrical hole 9 equates that with the interior ring diameter of annulus cement column 7 height of cylindrical hole 9 is less than the height of glued quartz sand body 11; In the cylindrical hole 9, in the inner chamber of annulus cement column 7 and be provided with compacting quartz sand body 4 between perforate sleeve pipe 6 and the seal cover A2; The permeability of compacting quartz sand body 4 is consistent with the sand control parameter of target well with degree of porosity, can be with gravel according to making under sand control parameter (degree of porosity, the permeability) condition that can obtain with the simulated target well; The surface of compacting sand body 4 is provided with screen casing 3, is used for simulating the screen casing in the actual sand control structure.
In the above-mentioned shearing analogue means of the utility model, the material of seal cover A2 and seal cover B12 can also be can bearing certain pressure glass fiber reinforced plastic; Seal cover A2 and seal cover B12 can also be tightly connected through interference fit and this three grades of cylindrical tubes; Seal cover A2 can also be connected through interference fit seal with sealed tube wire terminal a1; Seal cover B12 can also be connected through interference fit seal with sealed tube wire terminal b13; The number of sample tap 5 can be regulated as required, and seal cover C10 can also be tightly connected through interference fit and multistage cylindrical tube.Annulus cement column 7 can also be annulus stainless steel cylinder or annulus alloy steel cylinder; The interior ring diameter of annulus cement column 7 and the diameter of cylindrical hole 9 all can be regulated according to the perforating bullet model of realistic objective well; The diameter of cylindrical hole 9 can be greater than the interior ring diameter of annulus cement column 7; Glued quartz sand body 11 can also be gluing appear sand body, glued glass microballoon or glued haydite etc., and its permeability, degree of porosity can be close with the stratigraphic facies related parameter of target well; The permeability of compacting quartz sand body 4, degree of porosity can be close with the sand control parameter of target well; Screen casing 3 can also be screen cloth or filter screen.
When using the shearing analogue means of the utility model, sealed tube wire terminal a1 closely is connected with indoor displacement pipeline, the displacement working solution is got in these three grades of cylindrical tubes.The displacement working solution is seepage flow in the compacting quartz sand body 4 in cylindrical tube 14 at first, and the interior ring back through cylinder cement ring body 7 gets in the cylindrical tube 8 then, in compacting quartz sand body 4 and glued quartz sand body 11 along seepage flow in the flow path direction directly; When need measure, obtain the displacement working solution from sample tap 5 and carry out performance test the performance of displacement working solution; Displacement working solution after test finishes can be discharged cylindrical tube 15 from sealed tube wire terminal b13.
Claims (10)
1. analogue means is sheared in a near wellbore zone, and it is characterized in that: said device comprises the multistage cylindrical tube of being made up of at least two not isometrical cylindrical tubes; Said multistage cylindrical tube is provided with seal cover A and seal cover B; Said seal cover A is positioned at the said cylindrical tube end of the first order, is respectively equipped with sealed tube wire terminal a and sealed tube wire terminal b on said seal cover A and the seal cover B; Be provided with the circle ring column of interference fit with it in the said cylindrical tube of the first order; Be provided with glued sand body between the soffit of said circle ring column and the said seal cover B, be provided with cylindrical hole in the said glued sand body with the intracavity inter-connection of said circle ring column; In the said cylindrical hole, be equipped with the compacting sand body in the inner chamber of said circle ring column and between the upper surface of said circle ring column and the said seal cover A.
2. analogue means according to claim 1 is characterized in that: said seal cover A is with said multistage cylindrical tube with seal cover B that thread seal is connected or interference fit.
3. analogue means according to claim 1 and 2 is characterized in that: said seal cover A is that thread seal is connected or interference fit with said sealed tube wire terminal a.
4. analogue means according to claim 1 and 2 is characterized in that: said seal cover B is that thread seal is connected or interference fit with said sealed tube wire terminal b.
5. analogue means according to claim 1 and 2 is characterized in that: said multistage cylindrical tube is provided with at least one sample tap; Said sample tap is provided with seal cover C.
6. analogue means according to claim 5 is characterized in that: said seal cover C is that thread seal is connected or interference fit with said multistage cylindrical tube.
7. analogue means according to claim 1 and 2 is characterized in that: said circle ring column is annulus cement column, annulus stainless steel cylinder or annulus alloy steel cylinder; The height of said circle ring column is less than the height of the said cylindrical tube of the first order; The said cylindrical tube of the soffit of said circle ring column and the first order overlaps with the interface of the said cylindrical tube in the second level.
8. analogue means according to claim 1 and 2 is characterized in that: the diameter of said cylindrical hole is more than or equal to the interior ring diameter of said circle ring column; The height of said cylindrical hole is less than the height of said glued sand body.
9. analogue means according to claim 1 and 2 is characterized in that: the surface of the nearly said seal cover A of said compacting sand body is provided with filter; Said filter is screen casing, screen cloth or filter screen.
10. analogue means according to claim 1 and 2 is characterized in that: the diameter of said multistage cylindrical tube is held to seal cover B end increase successively from seal cover A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206791460U CN202100255U (en) | 2010-12-14 | 2010-12-14 | Multistage cylinder barrel cutting and simulating device with sand prevention compaction sand body in near well bore area |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206791460U CN202100255U (en) | 2010-12-14 | 2010-12-14 | Multistage cylinder barrel cutting and simulating device with sand prevention compaction sand body in near well bore area |
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| Publication Number | Publication Date |
|---|---|
| CN202100255U true CN202100255U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206791460U Expired - Lifetime CN202100255U (en) | 2010-12-14 | 2010-12-14 | Multistage cylinder barrel cutting and simulating device with sand prevention compaction sand body in near well bore area |
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| Country | Link |
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| CN (1) | CN202100255U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128030A (en) * | 2010-12-14 | 2011-07-20 | 中国海洋石油总公司 | Wellbore vicinity shearing simulating device with multistage cylindrical barrel with sand-prevention compacted sand bodies |
-
2010
- 2010-12-14 CN CN2010206791460U patent/CN202100255U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128030A (en) * | 2010-12-14 | 2011-07-20 | 中国海洋石油总公司 | Wellbore vicinity shearing simulating device with multistage cylindrical barrel with sand-prevention compacted sand bodies |
| CN102128030B (en) * | 2010-12-14 | 2014-03-26 | 中国海洋石油总公司 | Wellbore vicinity shearing simulating device with multistage cylindrical barrel with sand-prevention compacted sand bodies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee after: China National Offshore Oil Corporation Patentee after: CNOOC Research Institute Patentee after: Southwest Petroleum University Address before: 100010 Beijing, Chaoyangmen, North Street, No. 25, No. Patentee before: China National Offshore Oil Corporation Patentee before: CNOOC Research Center Patentee before: Southwest Petroleum University |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20120104 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20120104 Effective date of abandoning: 20140326 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |