CN110067539B - Thick oil mixing device - Google Patents
Thick oil mixing device Download PDFInfo
- Publication number
- CN110067539B CN110067539B CN201910348560.9A CN201910348560A CN110067539B CN 110067539 B CN110067539 B CN 110067539B CN 201910348560 A CN201910348560 A CN 201910348560A CN 110067539 B CN110067539 B CN 110067539B
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- mixing
- oil
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- impeller
- rotary
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- 238000002156 mixing Methods 0.000 title claims abstract description 114
- 230000000712 assembly Effects 0.000 claims abstract description 15
- 238000000429 assembly Methods 0.000 claims abstract description 15
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 239000012530 fluid Substances 0.000 claims description 30
- 230000008602 contraction Effects 0.000 claims description 8
- 238000009792 diffusion process Methods 0.000 claims description 8
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- 238000010008 shearing Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 239000003129 oil well Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000002347 injection Methods 0.000 abstract description 5
- 239000007924 injection Substances 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 61
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000006185 dispersion Substances 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Life Sciences & Earth Sciences (AREA)
- 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)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
The invention discloses a thick oil mixing device, which is characterized in that: the oil pipe coupling comprises an oil pipe coupling and a bearing cylinder, wherein the oil pipe coupling is connected to the upper end of the bearing cylinder, a filter screen is arranged at the lower end of the bearing cylinder, at least one group of rotary mixing assemblies and at least one group of mixing grids are arranged in the bearing cylinder, and the mixing grids and the rotary mixing assemblies are sequentially arranged at intervals from top to bottom. The thick oil mixing device provided by the invention is a downhole thick oil mixing tool which does not need external power, has high mixing efficiency and reduced pressure, does not change the production process of an oil well and does not influence the yield of the oil well, the injection quantity of thin oil can be effectively controlled, and the underground mixing effect is improved.
Description
Technical Field
The invention belongs to the technical field of oil extraction equipment in an oil field, and particularly relates to a thick oil mixing device.
Background
The thick oil reserves in the oil fields in China are very rich, and because the thick oil has the characteristics of special high viscosity and high solidifying point, the viscosity reduction by mixing thin oil is one of main forms in the thick oil exploitation process, and the thin oil is injected from an oil sleeve annulus, mixed with the thick oil after reaching the viscosity reduction point and enters an oil pipe, so that the purpose of viscosity reduction and lifting of the thick oil is achieved. The thick oil mixing device is a main tool for improving the mixing effect in the mixing and viscosity reducing process, and has important significance for improving the utilization rate of thin oil, saving the consumption of thin oil, making up the gap of thin oil and the like. The existing thick oil mixing and diluting device has the common problems that the mixing effect is not ideal, the mixing pressure drop is large, the energy consumption of an oil pumping system is increased, and the thin oil amount is wasted greatly.
CN102155204a discloses a jet rotary oil mixer suitable for super heavy oil dilution exploitation, but it needs to provide driving force for impeller rotation by directly impacting the stirring impeller after spraying the thin oil from the nozzle. The oil mixer can drive the impeller to rotate by means of external force, and the nozzle structure is not practical in an oil well, so that the thick oil dilution effect is not ideal.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention aims to provide a thick oil mixing device which can fully mix thick oil and reduce the consumption of thin oil so as to reduce the energy consumption of an oil pumping system.
The aim of the invention is achieved by the following technical scheme.
The utility model provides a thick oil mixes rare mixing arrangement, includes tubing coupling and bears a section of thick bamboo, tubing coupling connects in the upper end that bears a section of thick bamboo, bears the lower extreme of section of thick bamboo and is provided with the filter sieve, bears and is provided with at least a set of rotatory mixing assembly and at least a set of mixing grid in a section of thick bamboo, mixing grid and rotatory mixing assembly from last interval setting down in proper order.
The bearing cylinder comprises an upper group, a middle group, a lower group and three groups of rotary mixing assemblies and three groups of mixing grids, wherein the rotary mixing assemblies in the middle group are opposite to the other two groups in rotation direction.
And a group of mixing grids are arranged at the outlets of the rotational flow radius at the upper part of each group of rotary mixing assemblies.
A bushing is arranged between the rotary mixing assembly and the mixing grid.
The rotary mixing assembly comprises a guide cylinder, a mandrel and a bracket for supporting the mandrel in the guide cylinder, wherein an impeller is sleeved on the mandrel, and the impeller is limited on the mandrel through a positioning nut and a locking back cap.
The impeller comprises a sliding bearing seat and spiral impeller blades which are distributed along the outer circle radial direction of the sliding bearing seat, the number of the impeller blades is 3-6, and the rotation direction can be left rotation or right rotation.
The inner cavity of the guide cylinder sequentially comprises a contraction section, a cylindrical section and a diffusion section from one end to the other end along the oil flow direction, the cone angle of the contraction section is 8-15 degrees, and the angle of the diffusion section is 30-45 degrees.
The mixing grid consists of a plurality of mutually-intersected mixing grid plates, and the mixing grid plates are provided with overflow holes.
Tens of parallel holes are distributed on the filter screen, and the aperture is 5-12 mm.
Compared with the prior art, the invention has the beneficial effects that: 1. the multi-stage mixing units are arranged along the flowing direction of the mixed oil, the rotation directions of two adjacent groups of mixing units are opposite, when the mixed fluid passes through, the impeller is pushed to rotate and stir, the fluid is rotated leftwards and rightwards, eddies and anti-eddies are generated, the mixed fluid is changed from longitudinal flow to transverse flow and is changed into longitudinal flow again, the fluid is dispersed while the direction is changed, and the fluid advances in the forms of diversion, confluence, rotational flow and turbulence, so that a good radial mixing effect is generated.
2. The mixed fluid forms spiral flow under the drive of the impeller, the mixed fluid forms large-angle impact mixing grids by means of spiral shearing force of the mixed fluid, the mixed fluid generates multi-channel relative displacement in labyrinth channels in the mixing grids to form split-displacement-overlap, and a severe vortex effect is generated in the section direction to form vortex shearing force, so that two-phase fluid is cut, sheared, rotated and remixed, and the purposes of good dispersion and full mixing among the fluids are achieved.
3. The kinetic energy of the mixed fluid is completely relied on in the mixing process, meanwhile, the dispersion mixing force is soft and sufficient, the head loss is much smaller than that of the traditional planar mixer, and the total flow length is much shorter than that of the traditional planar mixer. The influence on the pressure drop of oil is small, which is beneficial to reducing the energy consumption and the failure rate of oil pumping equipment.
4. The device is easy to disassemble and assemble, the original production process of the oil well is not required to be changed when the device is used, and the device can be matched with tools such as a thin-mixing check valve, a leather cup cutting device and the like to be used in a self-injection well and a production well, and the positive and negative flushing is not influenced.
In summary, the thick oil mixing device is an underground thick oil mixing tool which does not need external power, has high mixing efficiency and reduced pressure, does not change the oil well production process and does not influence the oil well yield, and can effectively control the injection amount of thin oil and improve the underground mixing effect.
Drawings
Fig. 1 is a schematic structural view of an embodiment.
FIG. 2 is a schematic diagram of a rotary mixing assembly.
FIG. 3 is a schematic illustration of a rotating mixing assembly bracket configuration.
Fig. 4 is a schematic diagram of a hybrid gate structure.
Fig. 5 is a schematic view of a left-hand impeller structure.
Fig. 6 is a schematic diagram of a right-handed impeller structure.
Fig. 7 is a schematic view of a filter screen construction.
Fig. 8 is a schematic view of a guide cylinder structure.
In the figure, 1 is an oil pipe coupling, 2 is a mixing grid, 3 is a bearing cylinder, 4 is a rotary mixing assembly, 5 is a filter screen, 6 is a bushing, 7 is a bracket, 8 is a guide cylinder, 9 is an impeller, 10 is a mandrel, 11 is a positioning nut, 12 is a locking back cap, 13 is a mixing grid plate, 14 is an overflow hole, 15 is a sliding bearing seat, 16 is an impeller blade, 17 is a contraction section, 18 is a cylindrical section, and 19 is a diffusion section.
Detailed Description
As shown in figures 1-8, the thick oil mixing device is used when thick oil is mixed with thin oil in oil field oil extraction, and comprises an oil pipe coupling 1 and a bearing cylinder 3, wherein the oil pipe coupling 1 is connected to the upper end of the bearing cylinder 3, and a filter screen 5 is arranged at the lower end of the bearing cylinder 3.
The filter screen 5 is provided with tens of parallel holes with the aperture of 5-12 mm, and the filter screen 5 is used for filtering and primarily dividing the oil flow entering the thick oil mixing device.
The bearing cylinder 3 is internally provided with an upper group, a middle group, a lower group and three groups of rotary mixing assemblies 4 and three groups of mixing grids 2, wherein the rotary mixing assemblies in the middle group are opposite to the other two groups in rotary direction, and a group of mixing grids 2 are arranged at the upper part of each group of rotary mixing assemblies 4.
A bushing 6 is arranged between the rotary mixing assembly 4 and the mixing grid 2 for separating the rotary mixing assembly 4 and the mixing grid 2, and the rotary mixing assembly 4 and the mixing grid 2 can be designed to have an optimal separation distance according to the size of the rotational flow radius.
The rotary mixing assembly 4 comprises a guide cylinder 8, a mandrel 10 and a bracket 7 for supporting the mandrel 10 in the guide cylinder 8, wherein an impeller 9 is sleeved on the mandrel 10, and the impeller 9 is limited on the mandrel 10 through a positioning nut 11 and a locking back cap 12.
The impeller 9 comprises a sliding bearing seat 15 and spiral impeller blades 16 which are distributed along the outer circle radial direction of the sliding bearing seat 15, the number of the impeller blades 16 is 3-6, and the rotation direction can be left rotation or right rotation.
The inner cavity of the guide cylinder 8 sequentially comprises a contraction section 17, a cylindrical section 18 and a diffusion section 19 from one end to the other end along the oil flow direction, the cone angle of the contraction section 17 is 8-15 degrees, and the cone angle of the contraction section 17 is the included angle between the cylinder wall and the axis of the guide cylinder 8; the angle of the diffusion section 19 is 30-45 degrees, and the cone angle of the diffusion section 19 is the included angle between the cylinder wall and the axis of the guide cylinder 8.
The mixing grid 2 is composed of a plurality of mutually-intersected mixing grids 13, as shown in fig. 2, and is a grid plate formed by vertically intersecting a plurality of transverse grids and a plurality of vertical grids, but of course, the mixing grids can also be intersected in other equivalent forms, each mixing grid 13 is also provided with at least one flow-through hole 14, and the number of the flow-through holes 14 can be two, three or more, so that tens of labyrinth passages are formed in the mixing grid.
The working process of the embodiment is as follows: when the mixed liquid of thin oil and thick oil enters the mixing device from bottom to top under the action of bottom pressure during operation, firstly, massive thick oil is primarily divided into long and thin strips by the filter screen 5, then enters the rotary mixing assembly 4, and the impeller 9 rapidly rotates and stirs under the impact of oil flow to cut off and crush the long thick oil.
At the same time, the crushed mixed fluid forms spiral flow under the drive of the impeller 9, and the mixed fluid forms large-angle impact mixing grid 2 by the aid of the spiral shearing force of the fluid. In one aspect of the present invention, heavy oil particles in the mixed fluid are crushed again by the grid plates of the mixing grid 2 and the cutting edges on the edges of the overflow holes; on the other hand, the mixed fluid generates multiple channel relative displacement in the labyrinth channels in the mixing grid 2 to form division-displacement-overlapping, and also generates intense vortex in the section direction, and strong shearing force acts on the fluid to further divide and mix the fluid.
The thick oil mixing device is provided with a plurality of groups of rotary mixing assemblies 4 and mixing grids 2 along the direction of the mixed oil flow, and the rotation directions of the two adjacent groups of rotary mixing assemblies are opposite, when the mixed fluid passes through, the impeller 9 is pushed to rotate and stir, so that the mixed fluid rotates leftwards and rightwards and swirls rightwards, the mixed fluid is changed from longitudinal flow to transverse flow and is changed into longitudinal flow again, the mixed fluid is dispersed while the direction is changed, and the mixed fluid advances in the forms of diversion, confluence, swirling flow and turbulence, so that a good radial mixing effect is generated.
The thick oil mixing device gathers and relies on the kinetic energy of mixed fluid itself completely in the mixing process, and its dynamics of dispersive mixing is soft abundant simultaneously, and head loss is much less than traditional planar type mixer, and the total length of flowing through is also much shorter than traditional planar type mixer. The influence on the pressure drop of oil is small, which is beneficial to reducing the energy consumption and the failure rate of oil pumping equipment.
The device is easy to disassemble and assemble, the original production process of the oil well is not required to be changed when the device is used, and the device can be matched with tools such as a thin-mixing check valve, a leather cup cutting device and the like to be used in a self-injection well and a production well, and the positive and negative flushing is not influenced.
In summary, the thick oil mixing device is an underground thick oil mixing tool which does not need external power, has high mixing efficiency and reduced pressure, does not change the oil well production process and does not influence the oil well yield, and can effectively control the injection amount of thin oil and improve the underground mixing effect.
While the invention has been described in terms of preferred embodiments, it will be understood that the invention is not limited thereto, but rather, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (4)
1. The utility model provides a thick oil mixes rare mixing arrangement which characterized in that: the oil pipe coupling comprises an oil pipe coupling (1) and a bearing cylinder (3), wherein the oil pipe coupling (1) is connected to the upper end of the bearing cylinder (3), a filter screen (5) is arranged at the lower end of the bearing cylinder (3), dozens of mutually parallel holes are distributed on the filter screen (5), and the hole diameter is 5-12 mm;
at least one group of rotary mixing assemblies (4) and at least one group of mixing grids (2) are arranged in the bearing cylinder (3), and the mixing grids (2) and the rotary mixing assemblies (4) are sequentially arranged at intervals from top to bottom;
a group of mixing grids (2) are arranged at the outlets of the rotational flow radius at the upper part of each group of rotary mixing assemblies (4); the mixing grid (2) consists of a plurality of mutually-intersected mixing grid plates, and the mixing grid plates are provided with overflow holes;
the rotary mixing assembly (4) comprises a guide cylinder (8), a mandrel (10) and a bracket (7) for supporting the mandrel (10) in the guide cylinder (8), wherein an impeller (9) is sleeved on the mandrel (10), and the impeller (9) is limited on the mandrel (10) through a positioning nut (11) and a locking back cap (12); the inner cavity of the guide cylinder (8) sequentially comprises a contraction section (17), a cylindrical section (18) and a diffusion section (19) from one end to the other end along the oil flow direction, the cone angle of the contraction section (17) is 8-15 degrees, and the angle of the diffusion section (19) is 30-45 degrees;
the massive thick oil is primarily divided into long and thin strips by a filter screen (5), then enters a rotary mixing assembly (4), and is rapidly rotated and stirred by an impeller (9) under the impact of oil flow, so that the long and thin oil is cut off and broken; the crushed mixed fluid forms spiral flow under the drive of an impeller (9), and the mixed fluid forms a large-angle impact mixing grid (2) by means of the spiral shearing force of the fluid; on the one hand, the thick oil particles in the mixed fluid are crushed again by the mixing grid plate and the cutting edge on the edge of the overflow hole; on the other hand, the mixed fluid undergoes a "multi-channel relative displacement" within the mixing grid (2).
2. The thick oil dilution mixing apparatus of claim 1, wherein: the bearing cylinder (3) comprises an upper group, a middle group, a lower group and three groups of rotary mixing assemblies (4) and three groups of mixing grids (2), wherein the rotary mixing assemblies of the middle group are opposite to the other two groups in rotation direction.
3. The thick oil dilution mixing apparatus of claim 1, wherein: a lining (6) is arranged between the rotary mixing assembly (4) and the mixing grid (2).
4. The thick oil dilution mixing apparatus of claim 1, wherein: the impeller (9) comprises a sliding bearing seat (15) and spiral impeller blades (16) which are distributed along the outer circle radial direction of the sliding bearing seat (15), and the number of the impeller blades (16) is 3-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910348560.9A CN110067539B (en) | 2019-04-28 | 2019-04-28 | Thick oil mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910348560.9A CN110067539B (en) | 2019-04-28 | 2019-04-28 | Thick oil mixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110067539A CN110067539A (en) | 2019-07-30 |
| CN110067539B true CN110067539B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910348560.9A Active CN110067539B (en) | 2019-04-28 | 2019-04-28 | Thick oil mixing device |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5320500A (en) * | 1991-09-10 | 1994-06-14 | Institut Francais Du Petrole | Continuous mixing device, method and use in an installation for pumping a high viscosity fluid |
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| CN210013693U (en) * | 2019-04-28 | 2020-02-04 | 河南福侨石油装备有限公司 | Thick oil mixes thin mixing arrangement |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7581593B2 (en) * | 2005-01-11 | 2009-09-01 | Amp Lift Group, Llc | Apparatus for treating fluid streams |
| CA2887857C (en) * | 2012-10-11 | 2017-06-13 | Halliburton Energy Services, Inc. | Method and apparatus for mixing fluid flow in a wellbore using a static mixer |
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2019
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|---|---|---|---|---|
| US5320500A (en) * | 1991-09-10 | 1994-06-14 | Institut Francais Du Petrole | Continuous mixing device, method and use in an installation for pumping a high viscosity fluid |
| CN1506151A (en) * | 2002-12-13 | 2004-06-23 | ���ữѧ��������˾ | Static mixer for high medium sticky |
| WO2010059874A1 (en) * | 2008-11-19 | 2010-05-27 | Green Zone, S.A. De C.V. | Viscosity reduction process for hydrocarbon production |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110067539A (en) | 2019-07-30 |
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