CN106499378A - A kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device - Google Patents
A kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device Download PDFInfo
- Publication number
- CN106499378A CN106499378A CN201611237895.6A CN201611237895A CN106499378A CN 106499378 A CN106499378 A CN 106499378A CN 201611237895 A CN201611237895 A CN 201611237895A CN 106499378 A CN106499378 A CN 106499378A
- Authority
- CN
- China
- Prior art keywords
- concentric
- inner hose
- carbon dioxide
- hole
- concentric inner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 22
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 22
- 239000004576 sand Substances 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000007791 liquid phase Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007812 deficiency Effects 0.000 abstract description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 15
- 239000012530 fluid Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011435 rock Substances 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
-
- 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
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
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)
- Jet Pumps And Other Pumps (AREA)
- Earth Drilling (AREA)
Abstract
A kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device, including the concentric outerhose being connected with concentric tube column in pit shaft, concentric inner hose is provided with concentric outerhose, and concentric inner hose top is circumferentially uniformly distributed 24 balance pipes, is circumferentially uniformly distributed 24 suction inlets in the middle part of concentric inner hose；Annular space between concentric outerhose and concentric inner hose is sealed by seal plug, is fixed with mjector in concentric inner hose；The present invention overcomes the significant deficiency of the uncontrollable down-hole sand concentration of ground sand mulling craft as a result of jet current principle, the characteristics of with real-time control underground fracture liquid sand concentration；Meanwhile, the mixing for revolutionizing ground liquid phase carbon dioxide and proppant needs the defect of high pressure low temperature, improves reliability and economy.
Description
Technical field
The invention belongs to industrial gas oil technical field, more particularly to a kind of concentric tube type down-hole supercritical titanium dioxide
Carbon jet mixing device.
Background technology
The supercritical carbon dioxide fracturing technology is used as a kind of fracturing technique of tool prospect.Above-critical state is different from gaseous state
With the flow morphology of liquid, supercritical carbon dioxide is with the high density close to liquid and the low-viscosity close to gas, tool
There are stronger solvability and high diffusivity coefficient, supercritical carbon dioxide fracturing fluid is to link up reservoir microcrack, cause crack
One of best effort liquid system of network.The mixing of the proppant such as liquid phase carbon dioxide and quartz sand needs ground mixing device, and
Must carry out under the working condition of high pressure low temperature, therefore, give ground mixing device and propose high requirement.Meanwhile, existing
The control method of some ground fracturing sand concentration is to pass through the fracturing fluid of certain sand concentration good for proportioning by ground mixing device
Pressure break pump truck, tubing string press-in stratum；When needing to adjust sand concentration, can only have good for new proportioning by ground mixing device
The fracturing fluid of certain sand concentration is transported to stratum through pressure break pump truck, tubing string again；Therefore, need before and after the adjustment of sand concentration certain
Time, while the low-viscosity characteristic of supercritical carbon dioxide, causes prop-carrying capacity poor so that cannot real-time control arrival stratum
Fracturing fluid sand concentration.
Content of the invention
In order to overcome the defect of above-mentioned prior art, it is an object of the invention to provide a kind of concentric tube type down-hole supercritical
Carbon dioxide jet mixing device, the features such as with realizing down-hole mulling, real-time control sand concentration.
In order to achieve the above object, the technical solution of present invention employing is：
A kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device, including be connected with concentric tube column in pit shaft
Concentric outerhose 1, is provided with concentric inner hose 2 in concentric outerhose 1, and 2 top of concentric inner hose is circumferentially uniformly distributed 2-4 balance pipe 3, with
2-4 suction inlet 6 is circumferentially uniformly distributed in the middle part of intracardiac pipe 2；Annular space between concentric outerhose 1 and concentric inner hose 2 is by sealing
Plug 10 is sealed, and is fixed with mjector in concentric inner hose 2.
Described mjector includes that catheter 4, nozzle 7, support ring 5, trunnion 8 and anemostat 9, catheter 4 are packed in
In concentric inner hose 2 and below balance pipe 3；Catheter 4 is connected with nozzle 7, support ring 5 and trunnion 8 of the nozzle 7 by perforate
Connection, trunnion 8 are connected with anemostat 9 and are packed on concentric inner hose 1.
Total cross-sectional area for cutting plane of structure product less than nozzle 7 of described balance pipe 3.
Be provided with described support ring 5 circumferential equally distributed 2-4 slit-like through-holes and with concentric inner hose 1 on suction inlet
6 is corresponding.
The present invention has advantages below：
1st, simple to operate, down-hole jet stream mixing device is connected with concentric tube, with concentric tube column lower going-into-well cylinder, is easy to
Play lower tubular column and device.
2nd, ground liquid phase carbon dioxide and mixed with proppants are revolutionized and injects technique and the mixing device of rock stratum, will
Need the ground mixing device that carbon dioxide is mixed with proppant is carried out under the conditions of high pressure low temperature, replace with down-hole jet stream and mix
Sand device, simplifies equipment, improves reliability and economy.
3rd, the significant deficiency of ground sand mulling craft uncontrollable down-hole sand concentration is overcome, as supercritical carbon dioxide has
There are the characteristic of low glutinous, outstanding sand ability, the sand concentration that ground is adjusted change when stratum is reached, the present invention can pass through
Flow jet work pressure and flow is adjusted, the effect of adjustment down-hole sand concentration is reached, is realized sand concentration real-time control in down-hole during pressure break.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
Specific embodiment
The present invention is described in detail below in conjunction with the accompanying drawings.
With reference to Fig. 1, a kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device, including with concentric tube in pit shaft
The concentric outerhose 1 that post is threaded connection, is provided with concentric inner hose 2, concentric inner hose 2 and concentric tube in pit shaft in concentric outerhose 1
Post is threaded connection, and 2 top of concentric inner hose is circumferentially uniformly distributed the balance pipe 3 (through hole) of 2-4 flute profile, in concentric inner hose 2
Portion is circumferentially uniformly distributed the suction inlet 6 (through hole) of 2-4 flute profile；Annular space between concentric outerhose 1 and concentric inner hose 2 is by close
Block head 10 is sealed, and seal plug 10 is threaded connection with concentric outerhose 1, seals the ring between concentric outerhose 1 and concentric inner hose 2
Shape space.Mjector is fixed with concentric inner hose 2.
Described mjector includes that catheter 4, nozzle 7, support ring 5, trunnion 8 and anemostat 9, catheter 4 are packed in
In concentric inner hose 2 and below balance pipe 3；Catheter 4 is connected with nozzle 7, support ring 5 and trunnion 8 of the nozzle 7 by perforate
Connection, the space between trunnion 8 and nozzle 7 are suction passage, and trunnion 8 is connected with anemostat 9 and is packed on concentric inner hose 1.
Total cross-sectional area for cutting plane of structure product less than nozzle 7 of described balance pipe 3.
Be provided with described support ring 5 circumferential equally distributed 2-4 slit-like through-holes and with concentric inner hose 1 on suction inlet
6 is corresponding.
The operation principle of the present invention：
The present invention is packed in mjector in concentric inner hose 2, i.e. first by nozzle 7 and drain first when well site is installed
Pipe 4 is connected, then is packed in concentric inner hose 2 and the lower section positioned at balance pipe 3, and then support ring 5 is placed in intracardiac
In pipe 2 and to adjust the slit-like through-holes in support ring 5 corresponding with the suction inlet 6 on concentric inner hose 2, by trunnion 8 and support ring 5
It is connected, finally anemostat 9 is connected with trunnion 8 and is packed on concentric inner hose 1.Secondly by concentric inner hose 2 and concentric tube column
Interior tubing string be threaded connection.Then the outer tubing string by concentric outerhose 1 with concentric tube column is threaded connection.Finally will sealing
Plug 10 is threaded connection with concentric outerhose 1, seals the annular space between concentric outerhose 1 and concentric inner hose 2.
During present invention work, after down-hole jet stream mixing device is with concentric tube column lower going-into-well cylinder precalculated position, supercritical
Carbon dioxide A reaches concentric inner hose 2 by concentric tube column, and proppant B reaches concentric inner hose 2 and concentric outerhose by concentric tube column
1 annular space is simultaneously encapsulated in annular space by seal plug 10.Supercritical carbon dioxide A is divided into two in concentric inner hose 2
Part, wherein less flow enter the annular space of concentric inner hose 2 and concentric outerhose 1 by the balance pipe 3 of concentric inner hose 2,
Remaining most of flow flows to nozzle 7 through catheter 4.Supercritical carbon dioxide A forms high velocity, low pressure liquid after the throttling of nozzle 7
Stream, export in nozzle 7, the grooved hole of support ring 5, the ring of the suction inlet 6 on concentric inner hose 2 and concentric inner hose 2 and concentric outerhose 1
The runner two ends in shape space form pressure reduction, prop up with the suction of suction inlet 6 on concentric inner hose 2 through support ring 5 under this differential pressure action
Support agent B, flows into trunnion 8 and forms mixed liquor C, after being pressurized through 9 reduction of speed of anemostat, flows into stratum.
Claims (4)
1. a kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device, it is characterised in that include concentric with pit shaft
The concentric outerhose (1) of tubing string connection, is provided with concentric inner hose (2) in concentric outerhose (1), concentric inner hose (2) top is circumferential uniform
2-4 balance pipe (3) of distribution, is circumferentially uniformly distributed 2-4 suction inlet (6) in the middle part of concentric inner hose (2)；Concentric outerhose (1) with
Annular space between intracardiac pipe (2) is sealed by seal plug (10), is fixed with mjector in concentric inner hose (2).
2. a kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device according to claim 1, its feature exist
In described mjector includes catheter (4), nozzle (7), support ring (5), trunnion (8) and anemostat (9), catheter (4)
It is packed in concentric inner hose (2) and is located at below balance pipe (3)；Catheter (4) is connected with nozzle (7), and nozzle (7) passes through perforate
Support ring (5) be connected with trunnion (8), trunnion (8) is connected with anemostat (9) and is packed on concentric inner hose 1.
3. a kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device according to claim 2, its feature exist
In described the total of balance pipe (3) cuts the cross-sectional area that plane of structure product is less than nozzle (7).
4. a kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device according to claim 2, its feature exist
In, be provided with described support ring (5) circumferential equally distributed 2-4 slit-like through-holes and with concentric inner hose (1) on suction inlet
(6) corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237895.6A CN106499378B (en) | 2016-12-28 | 2016-12-28 | Concentric tube type underground supercritical carbon dioxide jet flow sand mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611237895.6A CN106499378B (en) | 2016-12-28 | 2016-12-28 | Concentric tube type underground supercritical carbon dioxide jet flow sand mixing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106499378A true CN106499378A (en) | 2017-03-15 |
| CN106499378B CN106499378B (en) | 2023-03-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611237895.6A Active CN106499378B (en) | 2016-12-28 | 2016-12-28 | Concentric tube type underground supercritical carbon dioxide jet flow sand mixing device |
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| Country | Link |
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| CN (1) | CN106499378B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025946A (en) * | 2018-08-23 | 2018-12-18 | 陕西延长石油(集团)有限责任公司研究院 | A kind of adjustable underground supercritical carbon dioxide jet stream mixing device |
| CN109025825A (en) * | 2018-10-10 | 2018-12-18 | 东北石油大学 | The self-priming particle stream flow drilling rig in underground based on Venturi effect |
| CN111042793A (en) * | 2020-01-16 | 2020-04-21 | 西安石油大学 | Carbon dioxide fracturing ground jet flow sand mixing device |
| CN111271041A (en) * | 2020-01-20 | 2020-06-12 | 西安石油大学 | Normal pressure type carbon dioxide fracturing ground sand mixing device |
| CN112240316A (en) * | 2019-07-17 | 2021-01-19 | 中国石油化工股份有限公司 | Adjustable ejector |
| CN115970573A (en) * | 2022-12-19 | 2023-04-18 | 兰州理工大学 | Underground supercritical carbon dioxide sand mixing device |
Citations (2)
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| CN101280671A (en) * | 2008-05-09 | 2008-10-08 | 中国石油新疆油田分公司采油工艺研究院 | Concentric tube jet flow negative pressure sand washing apparatus and using method thereoof |
| US20160273313A1 (en) * | 2014-09-15 | 2016-09-22 | Halliburton Energy Services, Inc. | Jetting tool for boosting pressures at target wellbore locations |
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2016
- 2016-12-28 CN CN201611237895.6A patent/CN106499378B/en active Active
Patent Citations (2)
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| CN101280671A (en) * | 2008-05-09 | 2008-10-08 | 中国石油新疆油田分公司采油工艺研究院 | Concentric tube jet flow negative pressure sand washing apparatus and using method thereoof |
| US20160273313A1 (en) * | 2014-09-15 | 2016-09-22 | Halliburton Energy Services, Inc. | Jetting tool for boosting pressures at target wellbore locations |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025946A (en) * | 2018-08-23 | 2018-12-18 | 陕西延长石油(集团)有限责任公司研究院 | A kind of adjustable underground supercritical carbon dioxide jet stream mixing device |
| CN109025946B (en) * | 2018-08-23 | 2020-12-01 | 陕西延长石油(集团)有限责任公司研究院 | Adjustable is supercritical carbon dioxide efflux mulling device in pit |
| CN109025825A (en) * | 2018-10-10 | 2018-12-18 | 东北石油大学 | The self-priming particle stream flow drilling rig in underground based on Venturi effect |
| CN112240316A (en) * | 2019-07-17 | 2021-01-19 | 中国石油化工股份有限公司 | Adjustable ejector |
| CN112240316B (en) * | 2019-07-17 | 2022-09-23 | 中国石油化工股份有限公司 | Adjustable ejector |
| CN111042793A (en) * | 2020-01-16 | 2020-04-21 | 西安石油大学 | Carbon dioxide fracturing ground jet flow sand mixing device |
| CN111271041A (en) * | 2020-01-20 | 2020-06-12 | 西安石油大学 | Normal pressure type carbon dioxide fracturing ground sand mixing device |
| CN115970573A (en) * | 2022-12-19 | 2023-04-18 | 兰州理工大学 | Underground supercritical carbon dioxide sand mixing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499378B (en) | 2023-03-14 |
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