CN115970573A - Underground supercritical carbon dioxide sand mixing device - Google Patents
Underground supercritical carbon dioxide sand mixing device Download PDFInfo
- Publication number
- CN115970573A CN115970573A CN202211634591.9A CN202211634591A CN115970573A CN 115970573 A CN115970573 A CN 115970573A CN 202211634591 A CN202211634591 A CN 202211634591A CN 115970573 A CN115970573 A CN 115970573A
- Authority
- CN
- China
- Prior art keywords
- carbon dioxide
- supercritical carbon
- sand
- pipe
- opening
- 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.)
- Pending
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 105
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 105
- 239000004576 sand Substances 0.000 title claims abstract description 79
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000009792 diffusion process Methods 0.000 claims description 17
- 230000003028 elevating effect Effects 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 59
- 239000012530 fluid Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000006004 Quartz sand Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Images
Landscapes
- Jet Pumps And Other Pumps (AREA)
Abstract
The invention particularly relates to an underground supercritical carbon dioxide sand mixing device which comprises a jet pipe, wherein a supercritical carbon dioxide inlet channel and a sand inlet channel are arranged on the jet pipe, the supercritical carbon dioxide inlet channel is communicated with the sand inlet channel, and an opening and closing control mechanism is arranged at the communication part of the supercritical carbon dioxide inlet channel and the sand inlet channel; the pressure of the supercritical carbon dioxide entering the supercritical carbon dioxide inlet channel controls the opening and closing of the opening and closing control mechanism. The aim is to make the sand output amount adapted to the pressure of the supercritical carbon dioxide, realize the synchronous change of the flow rate of the supercritical carbon dioxide and the flow rate of the sand, avoid the occurrence of time difference and realize the timely control and change of the sand concentration.
Description
Technical Field
The invention belongs to the technical field of petroleum production equipment, and particularly relates to an underground supercritical carbon dioxide sand mixing device.
Background
The supercritical carbon dioxide fracturing technology is taken as a promising fracturing technology. The supercritical state is a fluid form different from gas and liquid states, and the supercritical carbon dioxide has high density close to liquid, low viscosity close to gas, strong dissolving capacity and high diffusion coefficient. Supercritical carbon dioxide fracturing fluid is one of the best working fluid systems to communicate the reservoir microcracks and create a fracture network. The mixing of the liquid-phase carbon dioxide, the quartz sand and other proppants needs a ground sand mixing device and must be carried out under the working conditions of high pressure and low temperature. Therefore, extremely high requirements are put on the ground sand mixing device. The existing control method of the ground fracturing sand concentration is that a prepared fracturing fluid with certain sand concentration is pressed into a stratum through a fracturing pump truck and a pipe column by a ground sand mixing device; when the concentration needs to be adjusted, the concentration of the fracturing fluid needs to be adjusted again, and the fracturing fluid can be conveyed to the underground through long conveying, so that a time difference is caused, the sand concentration cannot be changed in time according to the concentration of the fracturing fluid, and the sand concentration of the fracturing fluid reaching a stratum cannot be controlled in real time.
Disclosure of Invention
The invention provides an underground supercritical carbon dioxide sand mixing device, aiming at solving the problem that the sand conveying concentration cannot be changed in time according to the concentration of supercritical carbon dioxide, and the sand mixing device can adjust the sand production amount according to the pressure of the supercritical carbon dioxide, so that the sand production amount is matched with the pressure of the supercritical carbon dioxide, the synchronous change of the flow rate of the supercritical carbon dioxide and the flow rate of the sand is realized, the occurrence of time difference is avoided, and the timely control and change of the sand concentration are realized.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a downhole supercritical carbon dioxide sand mixing device comprises a jet pipe, wherein a supercritical carbon dioxide inlet channel and a sand inlet channel are arranged on the jet pipe, the supercritical carbon dioxide inlet channel is communicated with the sand inlet channel, and an opening and closing control mechanism is arranged at the communication position of the supercritical carbon dioxide inlet channel and the sand inlet channel; the pressure of the supercritical carbon dioxide entering the supercritical carbon dioxide inlet channel controls the opening and closing of the opening and closing control mechanism.
Preferably, the opening and closing control mechanism comprises a pressure sensor and an opening and closing device, the pressure sensor is connected with the opening and closing device, the pressure sensor is used for sensing the pressure of the supercritical carbon dioxide entering channel, and the opening and closing device is used for opening/closing the communication part of the supercritical carbon dioxide entering channel and the sand entering channel.
Preferably, the pressure sensor comprises a first piston, the first piston is arranged in a first accommodating cylinder, a first connecting rod is connected to the first piston, and the first connecting rod is connected with the opening and closing device; the first accommodating cylinder is provided with an air passage and an air outlet, the first accommodating cylinder is respectively communicated with the air passage and the air outlet, the other end of the air passage and the air outlet are communicated with the supercritical carbon dioxide inlet channel, and the air passage and the air outlet are positioned at one end, close to an inlet of the supercritical carbon dioxide inlet channel, of the first accommodating cylinder; the other end of the gas passage is located upstream of the gas outlet in the flow direction of the supercritical carbon dioxide.
Preferably, the pressure sensor comprises a hinged rod, one end of the hinged rod is hinged with a first connecting rod, and the first connecting rod is connected with the opening and closing device; the other end of the hinge rod extends into the supercritical carbon dioxide inlet channel, and the middle part of the hinge rod is hinged on the jet pipe to form a wane structure.
Preferably, one end of the hinge rod extending into the supercritical carbon dioxide inlet passage is fan-shaped, and the fan-shaped sector faces the direction of the supercritical carbon dioxide inlet.
Preferably, a balancing weight is fixedly arranged on the first connecting rod and can move up and down relative to the jet pipe along with the first connecting rod 。
Preferably, the opening and closing device comprises a valve, the valve is connected with a first connecting rod, the valve is arranged at the sand outlet, the first connecting rod drives the valve to move relative to the sand outlet, and the area of the valve is not smaller than that of the sand outlet.
Preferably, a nozzle is further arranged in the jet pipe, the size of an inlet of the nozzle is larger than that of an outlet of the nozzle, the nozzle is connected with a lifting mechanism, and the lifting mechanism drives the nozzle to move up and down relative to the jet pipe.
Preferably, the lifting mechanism comprises a second piston, the second piston is connected with a support through a second connecting rod, the support is connected with the nozzle, the second piston is arranged in a second accommodating cylinder, a first air inlet and a second air inlet are arranged on the second accommodating cylinder, the first air inlet and the second air inlet are respectively positioned at two sides of the second piston, and the first air inlet and the second air inlet are respectively communicated with the supercritical carbon dioxide inlet channel through control valves; and one-way valves are respectively arranged at the first air inlet and the second air inlet.
Preferably, a throat pipe and a diffusion pipe are further arranged in the jet pipe, and the throat pipe is connected with the diffusion pipe; the pipe diameter of the throat pipe is larger than the diameter of the outlet of the nozzle, the throat pipe is positioned on one side close to the upper outlet of the nozzle, the throat pipe is positioned on the downstream side of the mixed supercritical carbon dioxide and sand, the inlet surface of the throat pipe is set to be an inclined surface, and the inclined direction of the inclined surface is that the inclined surface inclines downwards towards the central axis of the throat pipe; the diffusion pipe is a reducer pipe, one end with a smaller pipe diameter of the diffusion pipe is communicated with the throat pipe, and the smaller pipe diameter of the diffusion pipe is equivalent to that of the throat pipe.
The invention has the following beneficial effects:
1. the lifting control mechanism is arranged, and can adjust the lifting height according to the pressure of the supercritical carbon dioxide, so that the opening and closing degree of a valve in the opening and closing control mechanism is controlled through the pressure of the supercritical carbon dioxide, the flow rate of the sand is matched with the pressure value of the supercritical carbon dioxide, the synchronous change of the flow rate of the supercritical carbon dioxide and the flow rate of the sand is realized, the occurrence of time difference is avoided, and the timely control and change of the sand concentration are realized;
2. the nozzle of the supercritical carbon dioxide can be adjusted in height, and the volume of the jet device can be changed by adjusting the height of the nozzle of the supercritical carbon dioxide, so that the volume of the sand mulling at different speeds can be changed according to actual conditions, and the sand mulling efficiency can be improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the lifting mechanism;
FIG. 3 is a schematic structural view of the opening and closing device;
FIG. 4 is another embodiment of the present invention;
fig. 5 is a schematic view of the structure of the hinge lever.
Wherein: 1-sand enters the channel; 2-a jet pipe; 3-a throat pipe; 4-a diffusion tube; 5-a nozzle; 6-a valve; 7-a first air inlet; 9-a first link; 10-a balancing weight; 11-a first containing cylinder; 12-a first piston; 13-the airway; 14-an air outlet; 15-a support; 16-a second link; 17-a second containing cylinder; 18-a second piston; 19-a second air inlet; 20-a cavity; 21-a hinged lever; 22-sand outlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1-5, a downhole supercritical carbon dioxide sand mulling device comprises a jet pipe 2, the jet pipe 2 is usually arranged at the connection position of the jet sand mulling device and a coiled tubing slip, a supercritical carbon dioxide inlet channel and a sand inlet channel 1 are arranged on the jet pipe 2, the supercritical carbon dioxide inlet channel and the sand inlet channel 1 are respectively and independently arranged, the supercritical carbon dioxide inlet channel is communicated with the sand inlet channel, and an opening and closing control mechanism is arranged at the communication position of the supercritical carbon dioxide inlet channel and the sand inlet channel; the pressure of the supercritical carbon dioxide entering the supercritical carbon dioxide inlet channel controls the opening and closing of the opening and closing control mechanism. By the velocity of flow of carbon dioxide, the opening degree of control mechanism that opens and shuts to eliminate the time difference that carbon dioxide and sand mix, through the velocity of flow control sand concentration of carbon dioxide, thereby make the velocity of flow of carbon dioxide and sand concentration looks adaptation.
The opening and closing control mechanism comprises a pressure sensor and an opening and closing device, the pressure sensor is connected with the opening and closing device, the pressure sensor is used for sensing the pressure of the supercritical carbon dioxide entering channel, and the opening and closing device is used for opening/closing the communication position of the supercritical carbon dioxide entering channel and the sand entering channel. The pressure inductor controls the opening degree of the opening and closing device through the flow rate of the carbon dioxide, the opening degree of the opening and closing device is large when the pressure is large, and the opening degree of the opening and closing device is small when the pressure is small, so that the flow rate of the carbon dioxide is matched with the sand concentration.
Example one
In the present invention, one embodiment of the pressure sensor is that the pressure sensor includes a first piston 12, the first piston 12 is disposed in a first accommodating cylinder 11, the first piston 12 is connected to a first connecting rod 9, and the first connecting rod 9 is connected to an opening and closing device; an air passage 13 and an air outlet 14 are arranged on the first accommodating cylinder 11, the first accommodating cylinder 11 is respectively communicated with the air passage 13 and the air outlet 14, the other end of the air passage 13 and the air outlet 14 are communicated with a supercritical carbon dioxide inlet channel, and the air passage 13 and the air outlet 14 are positioned at one end, close to an inlet of the supercritical carbon dioxide inlet channel, of the first accommodating cylinder 11; the other end of the gas duct 13 is located upstream in the flow direction of the supercritical carbon dioxide than the gas outlet 14. The air inlet end and the air outlet 14 of the air passage 13 are both located on the inner wall surface of the jet pipe 2, when the supercritical carbon dioxide enters the inside of the jet pipe 2, the air passage 13 is opened for ventilation, a small part of the supercritical carbon dioxide enters the first accommodating cylinder 11 along the air passage 13 and then goes out of the air outlet 14, so that negative pressure is formed in the first accommodating cylinder 11, the first piston 12 is lifted upwards (in the direction of fig. 1), and the first piston 12 drives the first connecting rod 9 to ascend. When the supercritical carbon dioxide enters at a high speed, the negative pressure formed in the first accommodating cylinder 11 is high, the first connecting rod 9 rises for a long distance, and the sand outflow amount is high; when the supercritical carbon dioxide enters at a relatively low speed, the negative pressure formed in the first accommodating cylinder 11 is relatively small, the ascending distance of the first connecting rod 9 is relatively small, and the sand outflow amount is relatively small.
A balancing weight 10 is fixedly arranged on the first connecting rod 9, and the balancing weight 10 can move up and down relative to the jet pipe 2 along with the first connecting rod 9. The setting of balancing weight 10 can be so that when no carbon dioxide gets into, the headstock gear can be in sand outlet 22 department through self gravity and the gravity of balancing weight 10, keeps the state of not opening to make the sand that enters into in the sand access passage 1 can not flow out.
The on-off device comprises a valve 6, the valve 6 is connected with a first connecting rod 9, the valve 6 is arranged at the sand outlet 22, the first connecting rod 9 drives the valve 6 to move relative to the sand outlet 22, and the area of the valve 6 is not smaller than that of the sand outlet 22. When the first connecting rod 9 moves upwards, the valve 6 is driven to move upwards at the same time, so that the sand outlet 22 is exposed, and when the first connecting rod 9 moves downwards, the valve 6 is driven to move downwards, so that the sand outlet 22 is closed.
Still be provided with nozzle 5 in the efflux pipe 2, the size of the entry of nozzle 5 is greater than the size of export, nozzle 5 is connected with elevating system, elevating system drives nozzle 5 and reciprocates for efflux pipe 2. The movement of the nozzle 5 changes the volume of the jet device, i.e. when the nozzle moves, the nozzle to throat distance changes and the volume of the jet mulling device also changes.
The lifting mechanism comprises a second piston 18, the second piston 18 is connected with a support 15 through a second connecting rod 16, the support 15 is connected with the nozzle 5, the second piston 18 is arranged in a second accommodating cylinder 17, a first air inlet 7 and a second air inlet 19 are arranged on the second accommodating cylinder 17, the first air inlet 7 and the second air inlet 19 are respectively positioned at two sides of the second piston 18, and the first air inlet 7 and the second air inlet 19 are respectively communicated with the supercritical carbon dioxide inlet channel through control valves; the first air inlet and the second air inlet 19 are respectively provided with a one-way valve. When the volume of the jet device needs to be changed, the first air inlet 7 is opened, the second air inlet 19 is closed, at the moment, a small part of supercritical carbon dioxide fluid enters from the first air inlet 7, so that the second piston 18 is pushed to move downwards, the gas in the second accommodating cylinder 17 is pressed out from the one-way valve, the second piston 18 drives the second connecting rod 16 to move downwards, the second connecting rod 16 drives the support 15 to move downwards, and the support 15 drives the nozzle 5 to move downwards, so that the volume of the jet device is reduced; when the second air inlet 19 is opened and the first air inlet 7 is closed, a small part of supercritical carbon dioxide fluid enters from the second air inlet 19, so that the second piston 18 is pushed to move upwards, the second piston 18 drives the second connecting rod 16 to move upwards, the second connecting rod 16 drives the support 15 to move upwards, the support 15 drives the nozzle 5 to move upwards, and the volume of the jet device is increased.
A throat pipe 3 and a diffusion pipe 4 are further arranged in the jet pipe 2, and the throat pipe 3 is connected with the diffusion pipe 4; the pipe diameter of the throat pipe 3 is larger than the diameter of the outlet of the nozzle 5, the throat pipe 3 is located on one side close to the upper outlet of the nozzle 5, the throat pipe 3 is located on the downstream side of the mixed supercritical carbon dioxide and sand, the inlet surface of the throat pipe 3 is set to be an inclined surface, the inclined direction of the inclined surface is downward inclined towards the central axis of the throat pipe 3, and therefore the mixed sand can rapidly enter the throat pipe 3 and flow towards the diffusion pipe 4.
The diffuser pipe 4 is a reducer pipe, one end of the diffuser pipe 4 with a smaller pipe diameter is communicated with the throat pipe 3, and the smaller pipe diameter of the diffuser pipe 4 is equivalent to that of the throat pipe 3. The throat 3 is used for fully mixing a propping agent (the propping agent is quartz sand or the like) with the supercritical carbon dioxide, and the diffusion tube 4 is used for reducing the speed of the mixed liquid and increasing the pressure energy (the kinetic energy of the solid-liquid mixture at the outlet of the throat is converted into the pressure energy through the diffusion effect).
Example two
The difference from the first embodiment is that in the first embodiment, the pressure sensor includes a hinge rod 21, one end of the hinge rod 21 is hinged to the first link 9, and the first link 9 is connected to the open/close device; the other end of the hinge rod 21 extends into the supercritical carbon dioxide inlet channel, and the middle part of the hinge rod 21 is hinged on the jet pipe 2 to form a wane structure.
One end of the hinge rod 21 extending into the supercritical carbon dioxide inlet channel is fan-shaped, and the fan-shaped fan surface faces the direction of the supercritical carbon dioxide inlet.
The hinged rod 21 is hinged to the upper end of the first connecting rod 9 in the cavity 20, the middle of the hinged rod 21 is hinged to the side wall of the jet pipe 2, when supercritical carbon dioxide fluid enters the jet pipe 2, the sector of the hinged rod 21 is pushed by the supercritical carbon dioxide fluid to move downwards, so that the hinged rod 21 tilts upwards at one end of the cavity 20 to drive the first connecting rod 9 to ascend, the opening and closing of the opening and closing device are controlled by the flow rate of the supercritical carbon dioxide, the opening and closing of the opening and closing device depend on the flow rate of the supercritical carbon dioxide flowing into the jet pipe 2, and therefore the concentration of the supercritical carbon dioxide is matched with the concentration of sand.
The device controls the opening and closing of the opening and closing device by the flow rate of the supercritical carbon dioxide, thereby realizing the synchronous change of the flow rate of the supercritical carbon dioxide and the flow rate of the sand and avoiding the occurrence of time difference; the lifting mechanism is arranged to control the lifting of the nozzle 5, so that the volume of the jet device is changed, the volume of the sand mulling at different speeds is changed according to the actual situation, and the sand mulling efficiency is improved.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various changes, modifications, alterations, and substitutions which may be made by those skilled in the art without departing from the spirit of the present invention shall fall within the protection scope defined by the claims of the present invention.
Claims (10)
1. The utility model provides a supercritical carbon dioxide mulling device in pit, includes jet pipe (2), be provided with supercritical carbon dioxide admission passage and sand admission passage on jet pipe (2), its characterized in that: the supercritical carbon dioxide inlet channel is communicated with the sand inlet channel, and an opening and closing control mechanism is arranged at the communication part of the supercritical carbon dioxide inlet channel and the sand inlet channel; the pressure of the supercritical carbon dioxide entering the supercritical carbon dioxide inlet channel controls the opening and closing of the opening and closing control mechanism.
2. The downhole supercritical carbon dioxide sand mulling apparatus according to claim 1, wherein: the opening and closing control mechanism comprises a pressure sensor and an opening and closing device, the pressure sensor is connected with the opening and closing device, the pressure sensor is used for sensing the pressure of the supercritical carbon dioxide entering channel, and the opening and closing device is used for opening/closing the communication position of the supercritical carbon dioxide entering channel and the sand entering channel.
3. The downhole supercritical carbon dioxide sand mulling apparatus according to claim 2, wherein: the pressure sensor comprises a first piston (12), the first piston (12) is arranged in a first containing cylinder (11), a first connecting rod (9) is connected to the first piston (12), and the first connecting rod (9) is connected with an opening and closing device; an air passage (13) and an air outlet (14) are arranged on the first accommodating cylinder (11), the first accommodating cylinder (11) is respectively communicated with the air passage (13) and the air outlet (14), the other end of the air passage (13) and the air outlet (14) are communicated with a supercritical carbon dioxide inlet channel, and the air passage (13) and the air outlet (14) are positioned at one end, close to an inlet of the supercritical carbon dioxide inlet channel, of the first accommodating cylinder (11); the other end of the gas duct (13) is located upstream of the gas outlet (14) in the flow direction of the supercritical carbon dioxide.
4. The downhole supercritical carbon dioxide mulling apparatus according to claim 2, wherein: the pressure sensor comprises a hinged rod (21), one end of the hinged rod (21) is hinged with the first connecting rod (9), and the first connecting rod (9) is connected with the opening and closing device; the other end of hinge rod (21) stretches into in the supercritical carbon dioxide access passage, the middle part of hinge rod (21) articulates on jet pipe (2) and forms the wane structure.
5. The downhole supercritical carbon dioxide mulling apparatus according to claim 4, wherein: one end of the hinge rod (21) extending into the supercritical carbon dioxide inlet channel is fan-shaped, and the fan-shaped fan surface faces the direction of the supercritical carbon dioxide inlet.
6. The downhole supercritical carbon dioxide sand mulling apparatus according to any of claims 3 to 5, wherein: a balancing weight (10) is fixedly arranged on the first connecting rod (9), and the balancing weight (10) can move up and down relative to the jet pipe (2) along with the first connecting rod (9) 。
7. The downhole supercritical carbon dioxide mulling apparatus as recited in claim 6, further comprising: the opening and closing device comprises a valve (6), the valve (6) is connected with a first connecting rod (9), the valve (6) is arranged at the sand outlet (22), the first connecting rod (9) drives the valve (6) to move relative to the sand outlet (22), and the area of the valve (6) is not smaller than that of the sand outlet (22).
8. The downhole supercritical carbon dioxide mulling apparatus according to claim 1, wherein: still be provided with nozzle (5) in efflux pipe (2), the size of the entry of nozzle (5) is greater than the size of export, nozzle (5) are connected with elevating system, elevating system drives nozzle (5) and reciprocates for efflux pipe (2).
9. The downhole supercritical carbon dioxide mulling apparatus as recited in claim 8, further comprising: the lifting mechanism comprises a second piston (18), the second piston (18) is connected with a support (15) through a second connecting rod (16), the support (15) is connected with the nozzle (5), the second piston (18) is arranged in a second containing cylinder (17), a first air inlet (7) and a second air inlet (19) are formed in the second containing cylinder (17), the first air inlet (7) and the second air inlet (19) are respectively located on two sides of the second piston (18), and the first air inlet (7) and the second air inlet (19) are respectively communicated with the supercritical carbon dioxide inlet channel through a control valve; the first air inlet (7) and the second air inlet (19) are respectively provided with a one-way valve.
10. The downhole supercritical carbon dioxide sand mulling apparatus according to claim 9, wherein: a throat pipe (3) and a diffusion pipe (4) are further arranged in the jet pipe (2), and the throat pipe (3) is connected with the diffusion pipe (4); the pipe diameter of the throat pipe (3) is larger than the diameter of the outlet of the nozzle (5), the throat pipe (3) is positioned on one side close to the upper outlet of the nozzle (5), the throat pipe (3) is positioned on the downstream side of the mixed supercritical carbon dioxide and sand, the inlet surface of the throat pipe (3) is arranged to be an inclined surface, and the inclined direction of the inclined surface is downwards inclined towards the central axis of the throat pipe (3);
the diffusion pipe (4) is a reducer pipe, one end of the diffusion pipe (4) with a smaller pipe diameter is communicated with the throat pipe (3), and the smaller pipe diameter of the diffusion pipe (4) is equivalent to that of the throat pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211634591.9A CN115970573A (en) | 2022-12-19 | 2022-12-19 | Underground supercritical carbon dioxide sand mixing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211634591.9A CN115970573A (en) | 2022-12-19 | 2022-12-19 | Underground supercritical carbon dioxide sand mixing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115970573A true CN115970573A (en) | 2023-04-18 |
Family
ID=85957382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211634591.9A Pending CN115970573A (en) | 2022-12-19 | 2022-12-19 | Underground supercritical carbon dioxide sand mixing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115970573A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117079395A (en) * | 2023-10-17 | 2023-11-17 | 南京隆沃科技有限公司 | Multi-equipment linkage perimeter warning device and application method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203208926U (en) * | 2010-05-28 | 2013-09-25 | 基伊埃图亨哈根哈普曼酿造系统有限责任公司 | Device used for mixing contents in tank |
| RU2513805C1 (en) * | 2012-12-25 | 2014-04-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный минерально-сырьевой университет "Горный" | Method to increase permeability of coal bed via wells drilled from mines |
| CN105189919A (en) * | 2013-03-12 | 2015-12-23 | 弗雷特等离子实验室公司 | Apparatus and method for sintering proppants |
| WO2016178956A1 (en) * | 2015-05-01 | 2016-11-10 | Schlumberger Technology Corporation | Dynamic solids concentration variation via pressure exchange device |
| CN106499378A (en) * | 2016-12-28 | 2017-03-15 | 西安石油大学 | A kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device |
| 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 |
| CN209464982U (en) * | 2018-11-07 | 2019-10-08 | 兖州煤业股份有限公司 | A kind of jet stream attaches device |
| CN110732278A (en) * | 2019-11-20 | 2020-01-31 | 江阴市豪亚机械制造有限公司 | continuous feeding pneumatic mixer with humidifying function |
| CN212701693U (en) * | 2019-12-25 | 2021-03-16 | 安徽富田农化有限公司 | Solid-liquid chemical raw material mixing device |
| CN112922576A (en) * | 2021-03-24 | 2021-06-08 | 大庆市天德忠石油科技有限公司 | Adjustable fracturing flow-back device |
| KR102410908B1 (en) * | 2022-03-14 | 2022-06-22 | 이에스피 주식회사 | High pressure collision type rapid mixer |
| CN114939594A (en) * | 2022-05-31 | 2022-08-26 | 安徽绿能技术研究院有限公司 | Aluminum ash grinding, winnowing and separating all-in-one machine device |
| CN115012900A (en) * | 2022-05-30 | 2022-09-06 | 陕西延长石油（集团）有限责任公司 | Sand-liquid separation underground sand mixing device and use method |
| CN115336564A (en) * | 2022-07-22 | 2022-11-15 | 龙昌 | Agricultural medicine spraying robot |
-
2022
- 2022-12-19 CN CN202211634591.9A patent/CN115970573A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203208926U (en) * | 2010-05-28 | 2013-09-25 | 基伊埃图亨哈根哈普曼酿造系统有限责任公司 | Device used for mixing contents in tank |
| RU2513805C1 (en) * | 2012-12-25 | 2014-04-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный минерально-сырьевой университет "Горный" | Method to increase permeability of coal bed via wells drilled from mines |
| CN105189919A (en) * | 2013-03-12 | 2015-12-23 | 弗雷特等离子实验室公司 | Apparatus and method for sintering proppants |
| WO2016178956A1 (en) * | 2015-05-01 | 2016-11-10 | Schlumberger Technology Corporation | Dynamic solids concentration variation via pressure exchange device |
| CN106499378A (en) * | 2016-12-28 | 2017-03-15 | 西安石油大学 | A kind of concentric tube type down-hole supercritical carbon dioxide jet mixing device |
| 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 |
| CN209464982U (en) * | 2018-11-07 | 2019-10-08 | 兖州煤业股份有限公司 | A kind of jet stream attaches device |
| CN110732278A (en) * | 2019-11-20 | 2020-01-31 | 江阴市豪亚机械制造有限公司 | continuous feeding pneumatic mixer with humidifying function |
| CN212701693U (en) * | 2019-12-25 | 2021-03-16 | 安徽富田农化有限公司 | Solid-liquid chemical raw material mixing device |
| CN112922576A (en) * | 2021-03-24 | 2021-06-08 | 大庆市天德忠石油科技有限公司 | Adjustable fracturing flow-back device |
| KR102410908B1 (en) * | 2022-03-14 | 2022-06-22 | 이에스피 주식회사 | High pressure collision type rapid mixer |
| CN115012900A (en) * | 2022-05-30 | 2022-09-06 | 陕西延长石油（集团）有限责任公司 | Sand-liquid separation underground sand mixing device and use method |
| CN114939594A (en) * | 2022-05-31 | 2022-08-26 | 安徽绿能技术研究院有限公司 | Aluminum ash grinding, winnowing and separating all-in-one machine device |
| CN115336564A (en) * | 2022-07-22 | 2022-11-15 | 龙昌 | Agricultural medicine spraying robot |
Non-Patent Citations (1)
| Title |
|---|
| 刘豪: "二氧化碳压裂地面射流混砂装置设计及其性能研究", 中国优秀硕士学位论文全文数据库 (工程科技Ⅰ辑), no. 09, 15 September 2021 (2021-09-15), pages 019 - 687 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117079395A (en) * | 2023-10-17 | 2023-11-17 | 南京隆沃科技有限公司 | Multi-equipment linkage perimeter warning device and application method thereof |
| CN117079395B (en) * | 2023-10-17 | 2024-03-26 | 南京隆沃科技有限公司 | Multi-equipment linkage perimeter warning device and application method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115970573A (en) | Underground supercritical carbon dioxide sand mixing device | |
| CN205387930U (en) | Low -pressure gas well two -fluid supersonic speed atomizing water pumping gas production system | |
| CN109025946A (en) | A kind of adjustable underground supercritical carbon dioxide jet stream mixing device | |
| CN211692422U (en) | Carbon dioxide injection huff and puff oil extraction ground device for oil field | |
| CN103061384A (en) | Secondary-pressurizing energy-saving water-supply system for high-rise building and energy-saving water supply method | |
| CN107059994A (en) | A kind of cascade pumping station of two-way water delivery and the design structure of pipeline | |
| CN112762358A (en) | Multiphase flow mixing and conveying device | |
| CN106522913A (en) | Parallel-pipe type underground supercritical carbon dioxide jetting sand-mixing device | |
| CN204627902U (en) | Air pressure liquid level liquid pump | |
| CN206784496U (en) | A kind of cascade pumping station of two-way water delivery and the design structure of pipeline | |
| CN105089607A (en) | Drainage gas production tool for underground self-operated ejector | |
| CN217979365U (en) | Oil return device of flooded evaporator | |
| WO2023168978A1 (en) | Air energy pump device | |
| CN1673552A (en) | Self-blowing air pressure automatic controlling water raiser | |
| CN214171959U (en) | Multiphase flow mixing and conveying device | |
| CN202832410U (en) | Spiral flow water draining and gas production device used for natural gas extraction | |
| CN203049695U (en) | Energy-saving high-rise water supply system for secondary pressurization | |
| CN206571474U (en) | A kind of pneumatic water drainage gas production device | |
| CN209370546U (en) | Micro- row's adjustable type air valve | |
| CN204804812U (en) | Drainage gas production tool for underground self-operated ejector | |
| GB2605926A (en) | System and method of well operations using a virtual plunger | |
| CN210977360U (en) | Venturi air charging device and drilling manifold comprising same | |
| CN207587335U (en) | A kind of bubble caption generates equipment | |
| CN209041676U (en) | A kind of underground swing type draws water recharge automatic transfer valve | |
| CN202381396U (en) | Deflation type adjustable nozzle for electrical submersible pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |