CN110924914B - Underground injection device for reducing viscosity of petroleum exploitation - Google Patents
Underground injection device for reducing viscosity of petroleum exploitation Download PDFInfo
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- CN110924914B CN110924914B CN201911164545.5A CN201911164545A CN110924914B CN 110924914 B CN110924914 B CN 110924914B CN 201911164545 A CN201911164545 A CN 201911164545A CN 110924914 B CN110924914 B CN 110924914B
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- pipe
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- air pressure
- viscosity
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention relates to the technical field of petroleum, and discloses an underground injection device for reducing viscosity of produced petroleum, which comprises an oil pumping pipe, wherein a feeding pipe is arranged on the right side of the oil pumping pipe, the bottom of the feeding pipe is fixedly connected with a material storage box, a pneumatic pipe is fixedly connected on the right side of the oil pumping pipe, a threaded rod is movably connected inside the oil pumping pipe, a discharge hole is formed in the outer side of the threaded rod, a fixed shaft is arranged inside the threaded rod, a fixed sleeve is fixedly connected inside the threaded rod, a slide rod is slidably connected on one side of the fixed sleeve, which is close to the fixed shaft, and a pressure spring is arranged on the outer side of the slide rod. Chemical agent is released through the discharge hole arranged on the surface of the threaded rod, so that petroleum is diluted by being fully contacted with the chemical agent in the upward transportation process, the viscosity of the petroleum is effectively reduced, and the phenomenon of pipe blockage caused by insufficient mixing of the petroleum and the chemical agent in the oil absorption process is prevented.
Description
Technical Field
The invention relates to the technical field of petroleum, in particular to an underground injection device for reducing the viscosity of the petroleum.
Background
Petroleum is a viscous and dark brown liquid, is called as "industrial blood", and is a main energy source in the present society, and is mainly prepared into fuel oil and gasoline, and is also a raw material of many chemical industry products such as plastics, etc., in the prior art, the petroleum is mostly extracted by a wellbore viscosity reduction technology, and the wellbore chemical viscosity reduction technology is a technology for extracting thick oil and high-viscosity oil by doping a chemical agent into a wellbore fluid so as to reduce the viscosity of the fluid.
In the actual exploitation process, the underground injection device of the traditional oil exploitation system is difficult to fully mix chemical agents into the oil fluid in the oil pumping pipe, so that some oil is not mixed with the chemical agents, the oil which is not mixed with chemical agent has larger bonding degree with the side wall of the oil pumping pipe, is easy to adhere to the side wall of the oil pumping pipe, and is easy to cause the problems of oil pumping pipe blockage, oil pumping equipment overload and the like after being accumulated for a long time, thereby causing mechanical damage and even causing safety accidents to threaten the life safety of petroleum extraction personnel, if excessive chemical agents are added to reduce the caking property of petroleum, although the adhesion between the petroleum and the side wall of the oil pumping pipe can be ensured to be small, the consumption of chemical agents is increased, meanwhile, the content of chemical agents in the petroleum is increased, so that the density of the petroleum is reduced, and the cost for exploiting the petroleum is greatly increased.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the underground injection device for reducing the viscosity of the petroleum, which has the advantages of fully mixing the petroleum and the chemical agent, reducing the exploitation cost and the like, and solves the problems of difficult uniform mixing of the petroleum and the chemical agent and high exploitation cost.
Technical scheme
In order to achieve the purposes of fully mixing petroleum and chemical agents and reducing the exploitation cost, the invention provides the following technical scheme: the underground injection device for reducing the viscosity of the produced oil comprises an oil pumping pipe, wherein an adding pipe is arranged on the right side of the oil pumping pipe, a storage box is fixedly connected to the bottom of the adding pipe, an air pressure pipe is fixedly connected to the right side of the oil pumping pipe, a threaded rod is movably connected to the inside of the oil pumping pipe, a discharge hole is formed in the outer side of the threaded rod, a fixed shaft is arranged in the threaded rod, a fixed sleeve is fixedly connected to the inside of the threaded rod, a sliding rod is slidably connected to one side, close to the fixed shaft, of the fixed sleeve, a pressure spring is arranged on the outer side of the sliding rod, a sealing plate is fixedly connected to one end, far away from the fixed shaft, of the sliding rod, a spring piece is fixedly connected to the inside of the slide rod, a spring body is fixedly connected to one side, far away from the upper side wall and the lower side wall of the discharge hole, of the spring body is fixedly connected with a bag body, and the bottom of the air pressure pipe is fixedly connected with a box body, the outer side of the pneumatic tube is fixedly connected with a communicating tube, the inner wall of the pneumatic tube is fixedly connected with an elastic spring, the bottom of the elastic spring is fixedly connected with a valve rod, the bottom of the box body is fixedly connected with a connecting tube, the inner wall of the pneumatic tube is fixedly connected with a pressure stabilizing spring, and the inner wall of the pneumatic tube is connected with a pneumatic block in a sliding mode.
Preferably, the fixed shaft is fixedly connected with the oil pumping pipe, and the outer side of the fixed shaft is of a concave-convex structure.
Preferably, one side of the sliding rod close to the fixed shaft is always in contact with the fixed shaft.
Preferably, the sliding rod is sleeved with a pressure spring.
Preferably, the sealing plate is slidably connected with the inner cavity of the fixing sleeve.
Preferably, the valve rod is slidably connected with the pneumatic tube.
Preferably, the storage tank is communicated with the oil pumping pipe through a connecting pipe.
Preferably, the air pressure block is fixedly connected with the pressure stabilizing spring.
Advantageous effects
Compared with the prior art, the invention provides the underground injection device for reducing the viscosity of the produced oil, and the underground injection device has the following beneficial effects:
1. this reduce injection apparatus in pit of exploiting oil viscosity releases chemical agent through the discharge opening that sets up on the screw rod surface, makes oil dilute with the abundant contact of chemical agent in the transportation that makes progress to the effectual viscosity that reduces oil prevents to inhale oil in-process oil and chemical agent and mixes inadequately and lead to the emergence of stifled pipe phenomenon.
2. This reduce injection apparatus in pit of exploiting oil viscosity through the cooperation between utricule and the spring body, when making the utricule receive the pressure that the hydraulic pressure in the fixed cover is greater than the internal spring of sac, the discharge opening and the fixed cover inner chamber between the passageway just can open, during the fixed cover inner chamber is flowed backward into to oil when preventing the chemical agent blowout to reached the purpose that prevents the oil and flow backward.
3. This reduce injection apparatus in pit of exploiting oil viscosity, when the oil pumping operation, the viscosity of oil is lower, the oil velocity of flow is faster, just the less is the pressure to the inside atmospheric pressure piece of atmospheric pressure pipe, when the viscosity grow of extraction oil, the pressure grow that the atmospheric pressure piece received, the atmospheric pressure piece slides right, make the atmospheric pressure grow in the atmospheric pressure pipe, the valve rod receives the increase of atmospheric pressure to last in the atmospheric pressure pipe, make valve rod rebound, the passageway in the connecting tube enlarges, the flow increase of chemical agent in the connecting tube, make the blowout volume increase of chemical agent, and the same is so, when the viscosity of extraction oil reduces, the valve rod moves down, the passageway in the connecting tube enlarges, make the blowout volume of chemical agent reduce, thereby reached the purpose of controlling the viscosity of oil in certain extent.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partially enlarged view of the structure of the present invention;
FIG. 3 is a schematic view of a threaded rod of the present invention;
FIG. 4 is a schematic view of a connection structure of a threaded rod and a fixed shaft according to the present invention;
FIG. 5 is a schematic view of the internal structure of the threaded rod of the present invention;
FIG. 6 is a schematic view of the fixing sleeve of the present invention;
FIG. 7 is a schematic view of a slide bar structure according to the present invention;
FIG. 8 is a schematic view of the discharge hole structure of the present invention;
FIG. 9 is a schematic structural diagram of the case of the present invention;
FIG. 10 is a schematic view of the air pressure block structure according to the present invention.
In the figure: 1. an oil pumping pipe; 2. a feeding pipe; 3. a material storage box; 4. a pneumatic tube; 5. a threaded rod; 6. a discharge hole; 7. a fixed shaft; 8. fixing a sleeve; 9. a slide bar; 10. a pressure spring; 11. a sealing plate; 12. a spring plate; 13. a spring body; 14. a capsule body; 15. a box body; 16. a communicating pipe; 17. a valve stem; 18. an elastic spring; 19. a connecting pipe; 20. a pressure stabilizing spring; 21. and (4) air briquetting.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-10, a downhole injection device for reducing viscosity of produced oil comprises an oil pumping pipe 1, a feeding pipe 2 is installed on the right side of the oil pumping pipe 1, a material storage tank 3 is fixedly connected to the bottom of the feeding pipe 2, a pneumatic pipe 4 is fixedly connected to the right side of the oil pumping pipe 1, a threaded rod 5 is movably connected to the inside of the oil pumping pipe 1, a discharge hole 6 is formed in the outer side of the threaded rod 5, a fixed shaft 7 is installed in the threaded rod 5, the fixed shaft 7 is fixedly connected to the oil pumping pipe 1, the outer side of the fixed shaft 7 is of a concave-convex structure, a fixed sleeve 8 is fixedly connected to the inside of the threaded rod 5, a slide rod 9 is slidably connected to one side of the fixed sleeve 8 close to the fixed shaft 7, one side of the slide rod 9 close to the fixed shaft 7 is always in contact with the fixed shaft 7, a pressure spring 10 is sleeved on the slide rod 9, a pressure spring 10 is installed on the outer side of the slide rod 9, and a sealing plate 11 is fixedly connected to one end of the slide rod 9 far away from the fixed shaft 7, the sealing plate 11 is connected with the inner cavity of the fixed sleeve 8 in a sliding way, and the spring piece 12 is fixedly connected inside the sliding rod 9.
The spring body 13 is fixedly connected inside the discharge hole 6, one side of the spring body 13 far away from the upper and lower side walls of the discharge hole 6 is fixedly connected with the capsule body 14, through the matching between the capsule body 14 and the spring body 13, when the capsule body 14 is subjected to the pressure of the hydraulic pressure in the fixing sleeve 8 which is greater than the pressure of the spring in the capsule body 14, a channel between the discharge hole 6 and the inner cavity of the fixing sleeve 8 is opened, when chemical agents are prevented from being sprayed out, petroleum is poured into the inner cavity of the fixing sleeve 8, the bottom of the pneumatic tube 4 is fixedly connected with the box body 15, the outer side of the pneumatic tube 4 is fixedly connected with the communicating pipe 16, the inner wall of the pneumatic tube 4 is fixedly connected with the elastic spring 18, the bottom of the elastic spring 18 is fixedly connected with the valve rod 17, the valve rod 17 is slidably connected with the pneumatic tube 4, the bottom of the box body 15 is fixedly connected with the connecting pipe 19, the storage box 3 is communicated with the oil pumping pipe 1 through the connecting pipe 19, the inner wall of the pneumatic tube 4 is fixedly connected with the pressure stabilizing spring 20, the air pressure block 21 is fixedly connected with the pressure stabilizing spring 20, and the inner wall of the air pressure pipe 4 is connected with the air pressure block 21 in a sliding manner.
When oil pumping operation is carried out, the threaded rod 5 is driven to rotate, so that the oil at the bottom of the oil pumping pipe 1 is transported to the upper part of the threaded rod 5 through the threaded rod 5, when the threaded rod 5 rotates, because the fixed shaft 7 in the threaded rod 5 is fixedly connected with the oil pumping pipe 1, the threaded rod 5 and the fixed shaft 7 generate relative motion, because the sliding rod 9 is always kept in contact with the concave-convex structure on the outer side of the fixed shaft 7 under the action of the pressure spring 10, when the sliding rod 9 rotates along with the threaded rod 5, meanwhile, the chemical medicine flows into the inner cavity of the threaded rod 5 from the material storage box 3 through the connecting pipe 19 under the action of the concave-convex block to do reciprocating sliding action, when the sliding rod 9 slides towards the direction close to the fixed shaft 7 under the action of the fixed shaft 7, the hydraulic pressure of the inner cavity of the fixed sleeve 8 is reduced, so that chemicals flow from the inner cavity of the threaded rod 5 to the inner cavity of the fixed sleeve 8 through the through hole in the sliding rod 9.
When the slide bar 9 moves in the direction far away from the fixed shaft 7 under the action of the fixed shaft 7, the hydraulic pressure in the fixed sleeve 8 rises, the capsule 14 is subjected to the pressure that the hydraulic pressure in the fixed sleeve 8 is greater than the pressure of the spring body 13 in the capsule 14, the capsule 14 contracts, the channel of the discharge hole 6 is opened, the chemical agent in the inner cavity of the fixed sleeve 8 flows out from the discharge hole 6, in the process of rotationally transporting oil by the threaded rod 5, the chemical agent is released through the discharge hole 6 arranged on the surface of the threaded rod 5, so that the oil is fully contacted and diluted with the chemical agent in the upward transportation process, the viscosity of the oil is effectively reduced, the phenomenon of pipe blockage caused by insufficient mixing of the oil and the chemical agent in the oil absorption process is prevented, through the matching between the capsule 14 and the spring body 13, when the capsule 14 is subjected to the pressure that the hydraulic pressure in the fixed sleeve 8 is greater than the pressure of the spring in the capsule 14, the channel between the discharge hole 6 and the inner cavity of the fixed sleeve 8 is opened, the petroleum is prevented from being poured into the inner cavity of the fixed sleeve 8 when the chemical agent is sprayed out, thereby achieving the purpose of preventing the petroleum from being poured backwards.
During oil pumping operation, the lower the viscosity of oil is, the faster the oil flow rate is, the smaller the pressure on the air pressure block 21 in the air pressure pipe 4 is, when the viscosity of the extracted oil is increased, the pressure on the air pressure block 21 is increased, the air pressure block 21 slides rightwards, so that the air pressure in the air pressure pipe 4 is increased, the pressure on the valve rod 17 pressed upwards by the air in the air pressure pipe 4 is increased, the valve rod 17 moves upwards, the channel in the connecting pipe 19 is expanded, the flow of the chemical agents in the connecting pipe 19 is increased, the ejection amount of the chemical agents is increased, and similarly, when the viscosity of the extracted oil is reduced, the valve rod 17 moves downwards, the channel in the connecting pipe 19 is expanded, the ejection amount of the chemical agents is reduced, and the purpose of controlling the viscosity of the oil within a certain range is achieved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a reduce injection apparatus in pit of exploitation oil viscosity, includes oil extraction pipe (1), its characterized in that: the material adding pipe (2) is installed on the right side of the oil pumping pipe (1), the material storing box (3) is fixedly connected to the bottom of the material adding pipe (2), the air pressure pipe (4) is fixedly connected to the right side of the oil pumping pipe (1), the threaded rod (5) is movably connected to the inner portion of the oil pumping pipe (1), the discharge hole (6) is formed in the outer side of the threaded rod (5), the fixed shaft (7) is installed inside the threaded rod (5), the fixed sleeve (8) is fixedly connected to the inner portion of the threaded rod (5), the sliding rod (9) is slidably connected to one side, close to the fixed shaft (7), of the fixed sleeve (8), the pressure spring (10) is installed on the outer side of the sliding rod (9), the sealing plate (11) is fixedly connected to one end, far away from the fixed shaft (7), of the sliding rod (9) is fixedly connected with the spring piece (12), the inner part of the discharge hole (6) is fixedly connected with a spring body (13), one side of the spring body (13) far away from the upper side wall and the lower side wall of the discharge hole (6) is fixedly connected with a capsule body (14), the bottom of the air pressure pipe (4) is fixedly connected with a box body (15), the outer side of the air pressure pipe (4) is fixedly connected with a communicating pipe (16), the inner wall of the air pressure pipe (4) is fixedly connected with an elastic spring (18), the bottom of the elastic spring (18) is fixedly connected with a valve rod (17), the bottom of the box body (15) is fixedly connected with a connecting pipe (19), the inner wall of the air pressure pipe (4) is fixedly connected with a pressure stabilizing spring (20), the inner wall of the air pressure pipe (4) is slidably connected with an air pressure block (21), the air pressure block (21) is fixedly connected with the pressure stabilizing spring (20) through the matching between the capsule body (14) and the spring body (13), when the hydraulic pressure in the fixed sleeve (8) of the capsule body (14) is higher than the pressure of a spring in the capsule body (14), a channel between the discharge hole (6) and the inner cavity of the fixed sleeve (8) is opened, when the oil pumping operation is performed, the lower the viscosity of the oil is, the faster the oil flow rate is, the smaller the pressure on an air pressure block (21) in the air pressure pipe (4) is, when the viscosity of the extracted oil is increased, the pressure on the air pressure block (21) is increased, the air pressure block (21) slides rightwards, the air pressure in the air pressure pipe (4) is increased, the pressure on a valve rod (17) pressed upwards by the air pressure in the air pressure pipe (4) is increased, the valve rod (17) moves upwards, the channel in the connecting pipe (19) is expanded, the flow of a chemical agent in the connecting pipe (19) is increased, the spraying amount of the chemical agent is increased, and similarly, when the viscosity of the extracted oil is reduced, the valve rod (17) moves downwards, the passage in the connecting pipe (19) is enlarged to reduce the amount of chemical agent to be sprayed, thereby achieving the purpose of controlling the viscosity of the oil within a certain range.
2. A downhole jetting apparatus for reducing viscosity of produced oil according to claim 1, wherein: the fixed shaft (7) is fixedly connected with the oil pumping pipe (1), and the outer side of the fixed shaft (7) is of a concave-convex structure.
3. A downhole jetting apparatus for reducing viscosity of produced oil according to claim 1, wherein: one side of the sliding rod (9) close to the fixed shaft (7) is always in contact with the fixed shaft (7).
4. A downhole jetting apparatus for reducing viscosity of produced oil according to claim 1, wherein: the sliding rod (9) is sleeved with a pressure spring (10).
5. A downhole jetting apparatus for reducing viscosity of produced oil according to claim 1, wherein: the sealing plate (11) is connected with the inner cavity of the fixed sleeve (8) in a sliding way.
6. A downhole jetting apparatus for reducing viscosity of produced oil according to claim 1, wherein: the valve rod (17) is connected with the pneumatic tube (4) in a sliding manner.
7. A downhole jetting apparatus for reducing viscosity of produced oil according to claim 1, wherein: the storage box (3) is communicated with the oil pumping pipe (1) through a connecting pipe (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164545.5A CN110924914B (en) | 2019-11-25 | 2019-11-25 | Underground injection device for reducing viscosity of petroleum exploitation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164545.5A CN110924914B (en) | 2019-11-25 | 2019-11-25 | Underground injection device for reducing viscosity of petroleum exploitation |
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| CN110924914A CN110924914A (en) | 2020-03-27 |
| CN110924914B true CN110924914B (en) | 2021-12-07 |
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| CN201911164545.5A Active CN110924914B (en) | 2019-11-25 | 2019-11-25 | Underground injection device for reducing viscosity of petroleum exploitation |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887654A (en) * | 1996-11-20 | 1999-03-30 | Schlumberger Technology Corporation | Method for performing downhole functions |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2370296B (en) * | 2000-12-20 | 2002-11-06 | Fmc Corp | Wellhead system comprising a sliding sleeve seal |
| WO2002103161A2 (en) * | 2001-06-19 | 2002-12-27 | Exxonmobil Upstream Research Company | Perforating gun assembly for use in multi-stage stimulation operations |
| US6880639B2 (en) * | 2002-08-27 | 2005-04-19 | Rw Capillary Tubing Accessories, L.L.C. | Downhole injection system |
| GB2549210B (en) * | 2011-03-23 | 2018-07-25 | Managed Pressure Operations | Blow out preventer |
| CN108930525A (en) * | 2017-05-24 | 2018-12-04 | 路云香 | A kind of efficient underground drug adding device |
| CN110130334B (en) * | 2019-05-24 | 2021-06-04 | 杭州昂创科技有限公司 | Self-drilling high-pressure rotary-jetting bag grouting expanding anti-floating anchor rod construction method |
| CN110344794B (en) * | 2019-06-20 | 2022-02-22 | 徐州亚泰电机有限公司 | Underground injection device of oil exploitation system |
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2019
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5887654A (en) * | 1996-11-20 | 1999-03-30 | Schlumberger Technology Corporation | Method for performing downhole functions |
| US6213203B1 (en) * | 1996-11-20 | 2001-04-10 | Schlumberger Technology Corporation | Lock mechanism for use with a downhole device |
Non-Patent Citations (1)
| Title |
|---|
| 井下乳化技术在稠油开采中的应用;宋迎来等;《国外油田工程》;19881231(第04期);全文 * |
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