CN207761627U - A kind of oil well air water mixed water injection device - Google Patents
A kind of oil well air water mixed water injection device Download PDFInfo
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- CN207761627U CN207761627U CN201721694484.XU CN201721694484U CN207761627U CN 207761627 U CN207761627 U CN 207761627U CN 201721694484 U CN201721694484 U CN 201721694484U CN 207761627 U CN207761627 U CN 207761627U
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Abstract
The utility model discloses a kind of oil well air water mixed water injection devices, including：Air supply system, including the switchgear house, air compressor, nitrogen-making device, the nitrogen supercharging machine that are sequentially connected in series, air isolate nitrogen after air compressor compression by nitrogen-making device, and nitrogen is delivered to by nitrogen supercharging machine in mixed water injection valve group；Water system, including water pot, hello water pump and high pressure water-injection pump, water pot are connected by feeding water pump with high pressure water-injection pump, and the water in water pot is delivered to after high pressure water-injection pump is pressurized by hello water pump and is delivered in mixed water injection valve group；Mixed water injection valve group is arranged between air supply system, water system and well head, and the nitrogen and injection water of air supply system and water system generation are mixed to form air-water mixture by mixed water injection valve group and inject in well head.The utility model realizes ultradeep well high-voltage safety gas injection, and being depressured gas injection for ultradeep well provides good technical guarantee.
Description
Technical field
The utility model is related to oil exploitation field of engineering technology more particularly to a kind of oil well air water mixed water injection devices.
Background technology
Currently, each oilfield exploitation comes into the High water cut middle and later periods, although taking some row engineerings such as profile control, water blockoff
Technical measures, but still there is part crude oil to remain in underground mining and do not come out, especially low-permeability oil deposit, heavy crude reservoir and condensate gas
Tibetan, which all fails to realize, adequately and reasonably to be developed, and gas injection has become improves recovery efficiency technique in order to which a kind of development is faster.Many oil fields
Oil reservoir depth in 5500m, the pure gas injection pressure of well head is up to 55MPa, and ultradeep well completion casing largely uses 7 " non-tiebacks
" completion, there are casing head it is resistance to force down, gas tightness is poor, cementing quality is poor, gas injection pressure is high the problems such as, it is therefore desirable to
Well head reduces gas injection pressure, realizes the purpose of the safe gas injection of high-pressure well.Country's nitrogen injection Well head flow path is primarily present following at present
Problem：
1) for domestic air insufflation techiques mainly based on carbon dioxide injection and natural gas, nitrogen injection technique is in developing stage, opens
Exhibition experiment oil field is less；
2) domestic nitrogen injection technology is mainly based on unit gas injection, and there is not been reported for individual well nitrogen injection technology；
3) it is directed to the nitrogen injection engineer testing scale is smaller of ultradeep well, the property used for reference is low.
Invention content
That well head gas injection pressure, the oil well air water of safe gas injection can be reduced is mixed the purpose of this utility model is to provide a kind of
Dispensing device.
To achieve the above object, a kind of specific technical solution of oil well air water mixed water injection device of the utility model is：
A kind of oil well air water mixed water injection device, including：Air supply system, including the switchgear house, the air that are sequentially connected in series compress
Machine, nitrogen-making device, nitrogen supercharging machine, air isolate nitrogen after air compressor compression by nitrogen-making device, and nitrogen passes through
Nitrogen supercharging machine is delivered in mixed water injection valve group；Water system, including water pot, hello water pump and high pressure water-injection pump, water pot, which passes through, feeds water
Pump is connected with high pressure water-injection pump, and the water in water pot is delivered to after high pressure water-injection pump is pressurized by hello water pump and is delivered to mixed water injection
In valve group；Mixed water injection valve group is arranged between air supply system, water system and well head, the nitrogen of air supply system and water system generation
Gas and injection water are mixed to form air-water mixture by mixed water injection valve group and inject in well head.
Further, mixed water injection valve group includes：Mixed water injection valve group, including multiple valves, be separately positioned on air supply system and well head it
Between, between water system and well head, between air supply system and water system；Ball-and-seat is hermetic seal, is separately positioned on and is connected
Mixed water injection valve group and air supply system between, between water system and well head and between mixed water injection valve group and well head；Plug valve, for gas
Sealing, is separately positioned between the mixed water injection valve group being connected and air supply system, between water system and well head.
Further, plug valve setting is being fed between water pump and high pressure water-injection pump.
Further, the water outlet of high pressure water-injection pump is additionally provided with the flowmeter of hermetic seal, flowmeter be located at plug valve into
Water end (W.E.), for monitoring injected water volume.
Further, it is connected with sewage draining exit by branch drain outlet between mixed water injection valve group and water system, for removing pipe
Line dirt, the water outlet of drain outlet ball-and-seat between mixed water injection valve group and water system are provided with cock on drain outlet
Valve.
Further, the oil pipe of well head and casing are connected by relief line with open flow pond, and relief line is hermetic seal.
Further, the manifold in air supply system, water system and mixed firmly valve group is all made of hermetic seal pipeline.
A kind of the advantages of oil well air water mixed water injection device of the utility model, is：
1) it realizes under existing gas injection capacity of equipment, the purpose of ultradeep well high-voltage safety gas injection, for ultradeep well decompression note
Air lift supplies good technical guarantee；
2) in the way of air water mixed water injection, superelevation strata pressure well under the conditions of existing gas injection capacity of equipment is realized
Gas injection technology；The design of manifold meets well head pressure 40MPa high-pressure gas injection requirements, reasonable design, specification, it is ensured that apply at scene
The safety of work；
3) it cannot achieve the oil well gas injection of pure gas injection especially suitable for the higher and existing gas injection equipment of strata pressure.
Description of the drawings
Fig. 1 is the structural schematic diagram of the oil well air water mixed water injection device of the utility model.
Specific implementation mode
In order to be better understood by the purpose of this utility model, structure and function, below in conjunction with the accompanying drawings, to the utility model
A kind of oil well air water mixed water injection device does further detailed description.
As shown in Figure 1, it is shown as a kind of oil well air water mixed water injection device of the utility model, including air supply system, for water system
It unites and mixed water injection valve group, includes the switchgear house 1 being sequentially connected in series, air compressor 2, nitrogen-making device 3, nitrogen increasing on air supply system
Press 4 (preferably 35Mpa), air isolate nitrogen by nitrogen-making device after the compression of air compressor 2, pass through nitrogen supercharging machine
4 are delivered in mixed water injection valve group；Water system includes water pot 7, feeds water pump 13 and high pressure water-injection pump 6 (preferably 40Mpa), and water pot 7 is logical
It crosses hello water pump 13 with high pressure water-injection pump 6 to be connected, the water in water pot 7 is delivered to high pressure water-injection pump 6 by hello water pump 13 and is increased
It is delivered to after pressure in mixed water injection valve group；Mixed water injection valve group, be arranged between air supply system, water system and well head 14, supercharging nitrogen and
Injection water injects well head after being mixed by valve group, to realize the purpose of the safe gas injection of air water mixed water injection.
Further, there are two the air compressor 2 in air supply system is preferably provided with, nitrogen-making device 3 preferably uses film nitrogen
Skid unit, nitrogen purity processed is up to 99%, discharge capacity 2000m3/h.There are two high pressure water-injection pump 6 in water system is preferably provided with,
Two high pressure water-injection pumps 6 are connected in parallel, and one of to use, another is spare.
Further, mixed water injection valve group includes mixed water injection valve group 5, ball-and-seat 9 and plug valve 10, and mixed water injection valve group 5 includes multiple valves,
It is separately positioned between air supply system and well head, between water system and well head, between air supply system and water system；Ball-and-seat
9 be hermetic seal, the flowing for controlling air-water mixture, be separately positioned between the mixed water injection valve group 5 being connected and air supply system,
Between water system and well head 14 and between mixed water injection valve group 5 and well head 14；Plug valve 10 is hermetic seal, is hermetic seal, respectively
It is arranged between the mixed water injection valve group 5 being connected and air supply system, between water system and well head 14, the flowing for controlling water；
It is fed between water pump 13 and high pressure water-injection pump 6 in addition, plug valve 10 is additionally arranged at.
Further, the water outlet of high pressure water-injection pump 6 is additionally provided with the flowmeter 11 of hermetic seal, and flowmeter 11 is located at plug valve
10 water inlet end, for monitoring injected water volume.
Further, it is connected with sewage draining exit 15 by branch drain outlet between mixed water injection valve group and water system, for removing
Pipeline dirt, the water outlet of drain outlet ball-and-seat 9 between mixed water injection valve group 5 and water system are provided on drain outlet
Plug valve 10.
Further, the oil pipe of well head and casing are connected by relief line with open flow pond 8, and relief line is hermetic seal,
Using the pipeline of pressure-bearing 70Mpa, relief line is provided with cement base bottom, and cement base bottom is fixed by the way of reinforcing bar rivet.
Wherein, the manifold in air supply system, water system and mixed firmly valve group is all made of hermetic seal pipeline, pressure-bearing 70Mpa.
A kind of oil well air water mixed water injection device of the utility model, realizes under existing gas injection capacity of equipment, and ultradeep well is high
The purpose for pressing safe gas injection is depressured gas injection for ultradeep well and provides good technical guarantee；In the way of air water mixed water injection, realize
The gas injection technology of superelevation strata pressure well under the conditions of existing gas injection capacity of equipment；The design of manifold meets well head pressure
40MPa high-pressure gas injections requirement, reasonable design, specification, it is ensured that the safety of site operation；It is higher especially suitable for strata pressure and
Existing gas injection equipment cannot achieve the oil well gas injection of pure gas injection.
The utility model is further described by specific embodiment above, it should be understood that, have here
The description of body, should not be construed as the restriction to the spirit and scope of the utility model, and one of ordinary skilled in the art is readding
The various modifications made to above-described embodiment after reader specification belong to the range that the utility model is protected.
Claims (7)
1. a kind of oil well air water mixed water injection device, which is characterized in that including：
Air supply system, including the switchgear house (1), air compressor (2), nitrogen-making device (3), the nitrogen supercharging machine that are sequentially connected in series
(4), air isolates nitrogen after air compressor (2) compression by nitrogen-making device (3), and nitrogen passes through nitrogen supercharging machine (4)
It is delivered in mixed water injection valve group；
Water system, including water pot (7), hello water pump (13) and high pressure water-injection pump (6), water pot (7), which passes through, feeds water pump (13) and height
Pressure injection water pump (6) is connected, and the water in water pot (7) is delivered to defeated after high pressure water-injection pump (6) is pressurized by hello water pump (13)
It send into mixed water injection valve group；
Mixed water injection valve group is arranged between air supply system, water system and well head (14), the nitrogen of air supply system and water system generation
Gas and injection water are mixed to form air-water mixture by mixed water injection valve group and inject in well head.
2. oil well air water mixed water injection device according to claim 1, which is characterized in that mixed water injection valve group includes：
Mixed water injection valve group (5), including multiple valves, be separately positioned between air supply system and well head, between water system and well head,
Between air supply system and water system；
Ball-and-seat (9), be hermetic seal, be separately positioned on the mixed water injection valve group (5) being connected air supply system between, water system and
Between well head (14) and between mixed water injection valve group (5) and well head (14)；
Plug valve (10) is hermetic seal, is separately positioned on the mixed water injection valve group (5) being connected between air supply system, water system
Between well head (14).
3. oil well air water mixed water injection device according to claim 2, which is characterized in that water pump is being fed in plug valve (10) setting
(13) between high pressure water-injection pump (6).
4. oil well air water mixed water injection device according to claim 3, which is characterized in that the water outlet of high pressure water-injection pump (6) is also
It is provided with the flowmeter (11) of hermetic seal, flowmeter (11) is located at the water inlet end of plug valve (10), for monitoring injected water volume.
5. oil well air water mixed water injection device according to claim 1, which is characterized in that mixed water injection valve group (5) and water system it
Between be connected with sewage draining exit (15) by branch drain outlet, for removing pipeline dirt, drain outlet be located at mixed water injection valve group (5) and
The water outlet of ball-and-seat (9) between water system is provided with plug valve (10) on drain outlet.
6. oil well air water mixed water injection device according to claim 1, which is characterized in that the oil pipe and casing of well head (14) pass through
Relief line is connected with open flow pond (8), and relief line is hermetic seal.
7. oil well air water mixed water injection device according to claim 1, which is characterized in that air supply system, water system and it is mixed live
Manifold in valve group is all made of hermetic seal pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721694484.XU CN207761627U (en) | 2017-12-07 | 2017-12-07 | A kind of oil well air water mixed water injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721694484.XU CN207761627U (en) | 2017-12-07 | 2017-12-07 | A kind of oil well air water mixed water injection device |
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| Publication Number | Publication Date |
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| CN207761627U true CN207761627U (en) | 2018-08-24 |
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| CN201721694484.XU Active CN207761627U (en) | 2017-12-07 | 2017-12-07 | A kind of oil well air water mixed water injection device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005383A (en) * | 2019-04-18 | 2019-07-12 | 中国石油化工股份有限公司 | The method and device of fracture-pore reservoir nitrogen flooding air water synergy |
| CN110057165A (en) * | 2019-04-18 | 2019-07-26 | 中国石油化工股份有限公司 | Oil field nitrogen making and injection device energy conservation system |
| CN111236898A (en) * | 2018-11-28 | 2020-06-05 | 中国石油化工股份有限公司 | Method for improving recovery ratio based on stagnant gas |
| CN113464086A (en) * | 2021-07-21 | 2021-10-01 | 上海外高桥造船有限公司 | Drilling platform high-pressure manifold device and using method thereof |
| CN113638717A (en) * | 2021-09-14 | 2021-11-12 | 四川恒重清洁能源成套装备制造有限公司 | Low-pressure low-yield well drainage gas recovery method |
-
2017
- 2017-12-07 CN CN201721694484.XU patent/CN207761627U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236898A (en) * | 2018-11-28 | 2020-06-05 | 中国石油化工股份有限公司 | Method for improving recovery ratio based on stagnant gas |
| CN110005383A (en) * | 2019-04-18 | 2019-07-12 | 中国石油化工股份有限公司 | The method and device of fracture-pore reservoir nitrogen flooding air water synergy |
| CN110057165A (en) * | 2019-04-18 | 2019-07-26 | 中国石油化工股份有限公司 | Oil field nitrogen making and injection device energy conservation system |
| CN113464086A (en) * | 2021-07-21 | 2021-10-01 | 上海外高桥造船有限公司 | Drilling platform high-pressure manifold device and using method thereof |
| CN113638717A (en) * | 2021-09-14 | 2021-11-12 | 四川恒重清洁能源成套装备制造有限公司 | Low-pressure low-yield well drainage gas recovery method |
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