CN219932134U - Microorganism multifunctional same-well injection and production device - Google Patents
Microorganism multifunctional same-well injection and production device Download PDFInfo
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- CN219932134U CN219932134U CN202321654790.6U CN202321654790U CN219932134U CN 219932134 U CN219932134 U CN 219932134U CN 202321654790 U CN202321654790 U CN 202321654790U CN 219932134 U CN219932134 U CN 219932134U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 239000003921 oil Substances 0.000 claims abstract description 65
- 238000000926 separation method Methods 0.000 claims abstract description 21
- 239000010779 crude oil Substances 0.000 claims abstract description 8
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- 238000000034 method Methods 0.000 claims description 5
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- 238000011084 recovery Methods 0.000 abstract description 7
- 230000006872 improvement Effects 0.000 abstract description 2
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Abstract
The utility model relates to the technical field of microorganism injection and crude oil recovery improvement, in particular to a microorganism multifunctional same-well injection and production device. The utility model provides a multi-functional same-well injection and production device of microorganism, includes the underground oil water separator who is located in the pit and is located the ground injection system in ground; the underground oil-water separation device comprises a hollow tubular column, wherein the outer diameter of the tubular column is smaller than the inner diameter of an oil pipe, and a gap is formed between the tubular column and the oil pipe; the length of the hollow tubular column is smaller than the length of the oil pipe; the hollow part of the pipe column is provided with a hydrocyclone, the upper end of the hydrocyclone is provided with a tangential inlet and an overflow port, and the lower end of the hydrocyclone is provided with a underflow port; the overflow port is connected with an oil pipe, and the outlet end of the oil pipe is positioned on the ground; the bottom flow port is sequentially connected with a protector, a coupler and a reinjection pump; and a water diversion pipe is arranged in the gap, the inlet end of the water diversion pipe is connected to the ground injection system, and the outlet end of the water diversion pipe is higher than the reinjection pump. The utility model realizes synchronous injection and exploitation of the same well.
Description
Technical Field
The utility model relates to the technical field of microorganism injection and crude oil recovery improvement, in particular to a microorganism multifunctional same-well injection and production device.
Background
Along with the stable growth of national economy, china has become the second largest petroleum consuming country and import country in the world. Therefore, the method for enhancing the exploration and development of oil gas resources and further improving the oil gas recovery ratio is an important countermeasure for relieving the dependence on oil gas import in China, and has important strategic significance for guaranteeing the national energy safety. With the development and progress of the microbial oil displacement technology, the application of the microbial oil displacement technology on site is gradually expanded and gradually applied to different oilfield productions. Compared with the traditional chemical flooding, the microbial flooding technology has the advantages of simple ground process flow, low investment cost, long effective time, little environmental pollution, no sewage treatment in the later period and the like.
Most of the oil fields in China already adopt tertiary oil recovery technology, and enter a high water content period or an extra-high water content period at the same time, a large amount of water is accompanied in produced liquid, and one of the problems is that the oil recovery cost is high, the produced liquid contains high water, and the recovery rate is low.
The same-well injection and production technology is characterized in that under the condition that the water content of a block is higher, oil-water separation equipment is put into, so that the purposes of simultaneous extraction and injection in the same shaft and dual purposes of one well are realized, most of underground water is not extracted to the ground, the underground water is recycled, the surrounding water wells are only injected with a small amount of supplementing water, and the oil well only adopts low-water-content oil, thereby greatly reducing the ineffective circulation of injected water and achieving the purposes of reducing the water yield, the wellhead water-injection quantity and the ground water treatment capacity. The ground ineffective circulation is changed into the oil reservoir internal circulation, so that the investment and the cost are reduced, and meanwhile, the water injection well point of the same-well injection and production effective oil well is increased, and the recovery ratio of the communicated effective well is improved.
Disclosure of Invention
Aiming at the problems, the utility model provides a microorganism multifunctional same-well injection and production device, which solves the problems of microorganism injection in a low-permeability oil reservoir, microorganism injection in the same well and crude oil extraction, solves the problems of recycling of underground water circulation after microorganism injection, and reduces ground water treatment.
The technical scheme of the utility model is as follows:
the utility model provides a multi-functional same-well injection and production device of microorganism, includes the underground oil water separator who is located in the pit and is located the ground injection system in ground; the underground oil-water separation device comprises a hollow tubular column, wherein the outer diameter of the tubular column is smaller than the inner diameter of an oil pipe, and a gap is formed between the tubular column and the oil pipe; the length of the hollow tubular column is smaller than the length of the oil pipe; the hollow part of the pipe column is provided with a hydrocyclone, the upper end of the hydrocyclone is provided with a tangential inlet and an overflow port, and the lower end of the hydrocyclone is provided with a underflow port; the overflow port is connected with an oil pipe, and the outlet end of the oil pipe is positioned on the ground; the bottom flow port is sequentially connected with a protector, a coupler and a reinjection pump; and a water diversion pipe is arranged in the gap, the inlet end of the water diversion pipe is connected to the ground injection system, and the outlet end of the water diversion pipe is higher than the reinjection pump.
The surface injection system includes a microorganism injection system and a water injection system.
The oil-water separation device comprises an oil pipe, a crude oil outlet and a water outlet, wherein the oil pipe is connected with the oil pipe through the oil pipe; the water outlet is connected to a water injection system.
The water injection system comprises a water injection pipeline, wherein the inlet end of the water injection pipeline is connected to a water outlet, the outlet end of the water injection pipeline is connected to the inlet end of the water guide pipe, and a first oil pipe flat gate valve, a first plunger pump and a first gauge are sequentially arranged on the water injection pipeline from the inlet end to the outlet end.
The microorganism injection system comprises a microorganism injection pipeline, wherein the inlet end of the microorganism injection pipeline is connected with a medicine storage tank, the outlet end of the microorganism injection pipeline is connected to the inlet end of the water diversion pipe, and a second oil pipe flat gate valve, a second plunger pump and a second meter are sequentially arranged on the microorganism injection pipeline from the inlet end to the outlet end.
And a production pump is also arranged between the overflow port and the oil pipe.
The utility model has the technical effects that:
according to the utility model, the ground injection system and the water guide pipe are used for injecting, oil-water separation is carried out on oil well produced liquid through the hydrocyclone, the separated oil is extracted to the ground through the oil pipe, and the separated water is reinjected through the protector, the coupler and the reinjection pump in sequence; the injection and the exploitation of the same well are synchronously carried out.
Drawings
FIG. 1 is a schematic diagram of a multi-functional microorganism injection and production device in the same well.
FIG. 2 is a top view of the downhole oil-water separator of the present utility model.
Reference numerals: 1. a crude oil outlet; 2. a ground oil-water separation device; 3. a water outlet; 4. a first oil pipe flat gate valve; 5. a first plunger pump; 6. a first meter; 7. a drug storage tank; 8. a water diversion pipe; 9. a production pump; 10. a second oil pipe flat gate valve; 11. a second plunger pump; 12. a hydrocyclone; 13. an underground oil-water separation device; 14. a protector; 15. a coupling; 16. a reinjection pump; 17. a second meter.
Detailed Description
Example 1
The utility model provides a multi-functional same-well injection and production device of microorganism, includes the underground oil water separator 13 that is located in the pit and the ground injection system that is located on ground; the downhole oil-water separation device 13 comprises a hollow tubular column, wherein the outer diameter of the tubular column is smaller than the inner diameter of the oil pipe, and a gap is formed between the tubular column and the oil pipe; the length of the hollow tubular column is smaller than the length of the oil pipe; the hollow part of the pipe column is provided with a hydrocyclone 12, the upper end of the hydrocyclone 12 is provided with a tangential inlet and an overflow port, and the lower end is provided with a underflow port; the overflow port is connected with an oil pipe, and the outlet end of the oil pipe is positioned on the ground; the bottom flow port is sequentially connected with a protector 14, a coupler 15 and a reinjection pump 16; a water diversion pipe 8 is arranged in the gap, the inlet end of the water diversion pipe 8 is connected to a ground injection system, and the outlet end of the water diversion pipe 8 is higher than a reinjection pump 16.
The specific implementation process of the embodiment is as follows:
the ground injection system is connected with the water diversion pipe 8 to realize injection into the well;
oil-water separation is carried out on oil well produced liquid through the hydrocyclone 12, separated oil is produced to the ground through an oil pipe, and separated water sequentially passes through the protector 14, the coupler 15 and the reinjection pump 16 to realize reinjection.
Wherein the hydrocyclone 12 is a conical-like tubular device, the tangential inlet is a passage of the oil-water mixture in the wellbore into the hydrocyclone 12, arranged tangentially to create a rotating flow field; the overflow port is a channel for the separated oil to be lifted to the ground; the bottom flow port is a channel for reinjection of separated water; when the oil-water mixture in the shaft enters the hydrocyclone 12 from the tangential inlet and rotates at a high speed, water with relatively high density is thrown to the outside under the action of centrifugal force, and oil with relatively low density is gathered in the center of the hydrocyclone 12, so that the separation of oil and water phases is realized.
Example 2
On the basis of the embodiment 1, the method further comprises the following steps:
the surface injection system includes a microorganism injection system and a water injection system. The microorganism injection system meets the requirements of microorganism dosing, proportion mixing, stirring and injection; the injected microorganism and water are injected through the water guide pipe 8 by controlling the injection amount according to the actual requirement.
Example 3
On the basis of embodiment 2, further comprising:
the oil-water separation device comprises an oil pipe, and is characterized by further comprising a ground oil-water separation device 2, wherein the inlet end of the ground oil-water separation device 2 is connected to the outlet end of the oil pipe, and the outlet end of the ground oil-water separation device 2 comprises a crude oil outlet 1 and a water outlet 3; the water outlet 3 is connected to a water injection system.
The water injection system comprises a water injection pipeline, wherein the inlet end of the water injection pipeline is connected to the water outlet 3, the outlet end of the water injection pipeline is connected to the inlet end of the water guide pipe 8, and the water injection pipeline from the inlet end to the outlet end is sequentially provided with a first oil pipe flat gate valve 4, a first plunger pump 5 and a first gauge 6.
The microorganism injection system comprises a microorganism injection pipeline, wherein the inlet end of the microorganism injection pipeline is connected with a medicine storage tank 7, the outlet end of the microorganism injection pipeline is connected to the inlet end of a water guide pipe 8, and a second oil pipe flat gate valve 10, a second plunger pump 11 and a second meter 17 are sequentially arranged on the microorganism injection pipeline from the inlet end to the outlet end.
Oil separated by the hydrocyclone 12 is extracted to the ground through an oil pipe, separated by a ground oil-water separation device 2, the separated crude oil can be transported, and the separated water is injected back into the ground for recycling through a water injection system and a water guide pipe 8; when the separated water is small, the water can be stored and reused. After the injection of the microorganisms, the injection may be turned off to allow the microorganisms to multiply in the formation, or alternatively, a slug injection of water may be used.
Example 4
On the basis of embodiment 3, further comprising: and a production pump 9 is further arranged between the overflow port and the oil pipe, and the produced liquid is lifted to the ground through the production pump 9 and the oil pipe.
The utility model relates to a device which is a commercial product; the ground oil-water separation device 2 is of a model QK-T-5, the first oil pipe flat gate valve 4 and the second oil pipe flat gate valve 10 are of a model Z41H-16C, the first plunger pump 5 and the second plunger pump 11 are of a model JYPZ5/70, the first gauge 6 and the second gauge 17 are of a model Y-100, the water guide pipe 8 is of a model JSBWBCQ, and the hydrocyclone 12 is of a model FX-350.
Claims (6)
1. The utility model provides a multi-functional same-well injection and production device of microorganism, includes underground oil water separator (13) and the ground injection system who is located ground in the pit; the method is characterized in that: the underground oil-water separation device (13) comprises a hollow tubular column, wherein the outer diameter of the tubular column is smaller than the inner diameter of the oil pipe, and a gap is formed between the tubular column and the oil pipe; the length of the hollow tubular column is smaller than the length of the oil pipe; the hollow part of the pipe column is provided with a hydrocyclone (12), the upper end of the hydrocyclone (12) is provided with a tangential inlet and an overflow port, and the lower end of the hydrocyclone is provided with a underflow port; the overflow port is connected with an oil pipe, and the outlet end of the oil pipe is positioned on the ground; the bottom flow port is sequentially connected with a protector (14), a coupler (15) and a reinjection pump (16); a water guide pipe (8) is arranged in the gap, the inlet end of the water guide pipe (8) is connected to the ground injection system, and the outlet end of the water guide pipe (8) is higher than the reinjection pump (16).
2. The microbial multi-functional co-well injection and production device according to claim 1, wherein: the surface injection system includes a microorganism injection system and a water injection system.
3. The microbial multi-functional co-well injection and production device according to claim 2, wherein: the oil-water separation device is characterized by further comprising a ground oil-water separation device (2), wherein the inlet end of the ground oil-water separation device (2) is connected to the outlet end of the oil pipe, and the outlet end of the ground oil-water separation device (2) comprises a crude oil outlet (1) and a water outlet (3); the water outlet (3) is connected to a water injection system.
4. A microbial multi-functional co-well injection and production device according to claim 3, wherein: the water injection system comprises a water injection pipeline, wherein the inlet end of the water injection pipeline is connected to a water outlet (3), the outlet end of the water injection pipeline is connected to the inlet end of a water guide pipe (8), and a first oil pipe flat gate valve (4), a first plunger pump (5) and a first meter (6) are sequentially arranged on the water injection pipeline from the inlet end to the outlet end.
5. The microbial multi-functional co-well injection and production device of claim 4, wherein: the microorganism injection system comprises a microorganism injection pipeline, wherein the inlet end of the microorganism injection pipeline is connected with a medicine storage tank (7), the outlet end of the microorganism injection pipeline is connected to the inlet end of the water diversion pipe (8), and a second oil pipe flat gate valve (10), a second plunger pump (11) and a second meter (17) are sequentially arranged on the microorganism injection pipeline from the inlet end to the outlet end.
6. The microbial multi-functional co-well injection and production device according to claim 5, wherein: and a production pump (9) is also arranged between the overflow port and the oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321654790.6U CN219932134U (en) | 2023-06-28 | 2023-06-28 | Microorganism multifunctional same-well injection and production device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321654790.6U CN219932134U (en) | 2023-06-28 | 2023-06-28 | Microorganism multifunctional same-well injection and production device |
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| Publication Number | Publication Date |
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| CN219932134U true CN219932134U (en) | 2023-10-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321654790.6U Active CN219932134U (en) | 2023-06-28 | 2023-06-28 | Microorganism multifunctional same-well injection and production device |
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| Country | Link |
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| CN (1) | CN219932134U (en) |
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2023
- 2023-06-28 CN CN202321654790.6U patent/CN219932134U/en active Active
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