CN113756768A - Flue gas high-pressure gas injection oil displacement and oil field production equipment - Google Patents
Flue gas high-pressure gas injection oil displacement and oil field production equipment Download PDFInfo
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- CN113756768A CN113756768A CN202111034008.6A CN202111034008A CN113756768A CN 113756768 A CN113756768 A CN 113756768A CN 202111034008 A CN202111034008 A CN 202111034008A CN 113756768 A CN113756768 A CN 113756768A
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000003546 flue gas Substances 0.000 title claims abstract description 62
- 239000007789 gas Substances 0.000 title claims abstract description 19
- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 10
- 238000004519 manufacturing process Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 100
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 239000003129 oil well Substances 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 7
- 239000008234 soft water Substances 0.000 claims description 17
- 239000000498 cooling water Substances 0.000 claims description 12
- 239000002918 waste heat Substances 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 239000003507 refrigerant Substances 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 abstract description 3
- 230000010354 integration Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 31
- 239000000295 fuel oil Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/164—Injecting CO2 or carbonated water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B37/00—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
- F04B37/10—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
- F04B37/12—Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compressor (AREA)
Abstract
The invention provides a flue gas high-pressure gas injection oil displacement one-skid oil field device, which is characterized in that discharged flue gas is filtered, dried, pressurized and heated through a first water cooler, a filter, a screw compressor, a second water cooler, a washing tank, a dryer and a reciprocating compressor, and then is introduced into an annular channel of an oil well to assist thick oil thermal recovery, and one-skid high integration of multiple device functions is realized, so that the device is fast moved and fast installed, the scattered device configuration of a well head is reduced, the flue gas of waste gas is fully utilized, and the device is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the field of heavy oil thermal recovery, in particular to a flue gas high-pressure gas injection oil displacement skid-mounted oilfield equipment.
Background
Under the current situation of carbon peak and green development, the flue gas is used as the main exhaust gas of steam extraction of thick oil, the annual emission is huge, and the method is the key point of CO2 emission reduction in the oil field thick oil extraction process. At the initial stage of the CCUS industrial technology development in China, mature flue gas high-pressure gas injection oil displacement equipment for heavy oil steam thermal recovery is not available, and highly integrated prying equipment for realizing the functions of filtering, drying, heating, pressurizing and the like of flue gas treatment is not available.
The process is used in the oil field exploitation process of the thick oil steam thermal exploitation, the main components N2 and CO2 in the waste gas generated by a steam boiler are used for reducing the viscosity of the oil layer of the thick oil, accelerating thermal diffusion, preventing front emulsification and enhancing energy and assisting in discharging, the collected flue gas is filtered, dried, heated and pressurized by equipment, and the high-temperature and high-pressure dry flue gas is injected into an annular channel of an oil well to assist the thick oil thermal exploitation. The invention provides a set of flue gas high-pressure gas injection oil displacement and oil field prying equipment.
Disclosure of Invention
The invention mainly aims to provide flue gas high-pressure gas injection oil displacement-oil field prying equipment, and solves the problems that flue gas emission of a heavy oil steam thermal recovery flue is polluted greatly, and the flue gas cannot be used for assisting heavy oil thermal recovery.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: the system comprises a flue gas pipeline and a water supply pipeline, wherein the flue gas pipeline is used for assisting thick oil thermal recovery, and the water supply pipeline is used for cooling heat exchange on the flue gas pipeline and preheating boiler inlet water;
the flue gas pipeline is provided with a first water cooler, a filter, a screw compressor, a second water cooler, a washing tank, a dryer and a reciprocating compressor which are sequentially connected in series, and the flue gas is filtered, dried, pressurized and heated by equipment, so that high-temperature and high-pressure dry flue gas is injected into an annular channel of an oil well to assist in thermal recovery of thick oil;
the soft water delivery port on the water supply pipeline is communicated with the cooling water inlets of the first water cooler and the second water cooler, and the cooling water outlets of the first water cooler and the second water cooler are communicated with the boiler water supply port on the water supply pipeline.
In the preferred scheme, the reciprocating compressor is multi-stage compression, the interstage water cooler or the interstage air cooler which are connected in series are arranged between each stage of compressor, the soft water conveying port is communicated with the cooling water inlet of the interstage water cooler, and the cooling water outlet of the interstage water cooler is communicated with the water supply port of the boiler.
In a preferable scheme, the interstage air cooler and the interstage water cooler are connected in series between compressors of each stage through control valves;
the number of the interstage water coolers is distributed according to the water requirement of the steam boiler, and the interstage air coolers are used for the rest.
In the preferred scheme, a motor is further arranged, the double ends of the motor drive the screw compressor and the reciprocating compressor, the screw compressor is pressurized in a first stage and is connected with the motor by a coupler or a reducer;
the reciprocating compressor adopts two-row four-stage compressor, and the cylinder is configured by inverse pole difference.
In the preferred scheme, the first water cooler, the second water cooler and the interstage water cooler are integrated for heat exchange, soft water of the steam boiler is used as a refrigerant and is introduced into the first water cooler, the second water cooler and the interstage water cooler for heat exchange, and the soft water after heat exchange is heated by utilizing waste heat and is introduced into the steam boiler.
In the preferred scheme, the whole equipment is highly integrated in a sledding mode, and is integrated through a matched pipeline valve and a control system, so that the equipment can be quickly moved and assembled.
In the preferred scheme, the high-temperature and high-pressure flue gas enters an oil layer through an annular channel of the oil well, so that CO2 in the flue gas enters a supercritical state for a period of time underground.
The invention provides a flue gas high-pressure gas injection oil displacement one-skid oil field device, which is characterized in that discharged flue gas is filtered, dried, pressurized and heated through a first water cooler, a filter, a screw compressor, a second water cooler, a washing tank, a dryer and a reciprocating compressor, and then is introduced into an annular channel of an oil well to assist thick oil thermal recovery, and one-skid high integration of multiple device functions is realized, so that the device is fast moved and fast installed, the scattered device configuration of a well head is reduced, the flue gas of waste gas is fully utilized, and the device is energy-saving and environment-friendly.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is an overall flow chart of the present invention;
fig. 2 is a schematic view of an overall connection of the present invention using an interstage air cooler;
FIG. 3 is a schematic diagram of the overall connection of the present invention using interstage water coolers;
in the figure: a first water cooler 1; a filter 2; a screw compressor 3; a second water cooler 4; a washing tank 5; a dryer 6; a reciprocating compressor 7; an interstage air cooler 8; an interstage water cooler 9; a soft water delivery port 10; a boiler water supply port 11; a flue gas duct 12; a water supply line 13.
Detailed Description
Example 1
As shown in fig. 1 to 3, the flue gas high-pressure gas injection oil displacement-sledge oil field device comprises a flue gas pipeline 12 and a water supply pipeline 13, wherein the flue gas pipeline 12 is used for assisting thick oil thermal recovery, and the water supply pipeline 13 is used for cooling heat exchange on the flue gas pipeline 12 and preheating boiler inlet water;
a first water cooler 1, a filter 2, a screw compressor 3, a second water cooler 4, a washing tank 5, a dryer 6 and a reciprocating compressor 7 which are sequentially connected in series are arranged on a flue gas pipeline 12, and the flue gas is filtered, dried, pressurized and heated through equipment, so that the high-temperature and high-pressure dry flue gas is injected into an annular channel of an oil well to assist in thermal recovery of thick oil;
the soft water delivery port 10 on the water supply pipeline 13 is communicated with the cooling water inlets of the first water cooler 1 and the second water cooler 4, and the cooling water outlets of the first water cooler 1 and the second water cooler 4 are communicated with the boiler water supply port 11 on the water supply pipeline 13. According to the structure, the trapped flue gas is introduced from the flue gas pipeline 12, is cooled by the first water cooler 1, enters the screw compressor 3 after particulate matters in the flue gas are separated by the filter 2, is pressurized to the air inlet pressure range of the reciprocating compressor, is separated, dehydrated and purified by the washing tank 5 and the dryer 6 after being cooled, and finally is injected into an annular channel of an oil well for auxiliary heavy oil thermal recovery by the high-temperature and high-pressure flue gas output by the reciprocating compressor 7. Meanwhile, the flue gas and the compressed waste heat are fully utilized to preheat the soft water of the boiler, and meanwhile, the flue gas can be cooled, so that the energy is saved and the environment is protected.
In the preferred scheme, the reciprocating compressor 7 is in multi-stage compression, an interstage water cooler 9 or an interstage air cooler 8 which is connected in series is arranged between each stage of compressor, a soft water conveying port 10 is communicated with a cooling water inlet of the interstage water cooler 9, and a cooling water outlet of the interstage water cooler 9 is communicated with a boiler water supply port 11. With this structure, the multistage compression of the reciprocating compressor 7 is cooled by the interstage air cooler 8 or the interstage water cooler 9, and the soft water is preheated by fully utilizing the waste heat after compression.
In a preferred scheme, the interstage air cooler 8 and the interstage water cooler 9 are connected in series between compressors of each stage through control valves;
the number of the interstage water coolers 9 is distributed according to the water demand for the steam boiler, and the interstage air coolers 8 are used for the rest. With the structure, the number of the interstage water coolers 9 is distributed according to the water demand of the steam boiler, the compressed waste heat is fully utilized to heat the soft water of the steam boiler, the effect of saving energy consumption is achieved, and the rest interstage air coolers 8 are selected for cooling. In this example, a four-stage compressor is selected, three interstage radiators are required, when the water consumption of the steam boiler can be supplied to four water coolers, the first water cooler 1, the second water cooler 4 and the two interstage water coolers 9 are communicated, and the other interstage radiator uses the interstage air cooler 8 for heat dissipation. The soft water of the steam boiler is fully utilized to cool the flue gas, and the energy is fully utilized. The specific distribution is reasonably selected according to the field working condition.
In the preferred scheme, a motor is further arranged, the double ends of the motor drive the screw compressor 3 and the reciprocating compressor 7, the screw compressor 3 is pressurized in one stage and is connected with the motor by a coupler;
the reciprocating compressor 7 adopts two-row four-stage compressors, and the cylinders are configured in a reverse pole difference mode. From this structure, by motor bi-polar drive screw compressor 3 and reciprocating compressor 7, screw compressor 3 adopts coupler or reduction gear and motor to link to each other as the one-level pressure boost, stabilizes instantaneous starting current, and motor speed matches with reciprocating compressor 7, and reciprocating compressor 7 adopts two level four compressor, and two organism reduce the host computer length half, and the cylinder uses the poor configuration of pole of falling, reduces reciprocating compressor 7 range cylinder width, and control compressor overall width is no longer than the car dress sled width.
In the preferred scheme, the first water cooler 1, the second water cooler 4 and the interstage water cooler 9 are designed in an integrated heat exchange mode, soft water of the steam boiler is used as a refrigerant and is introduced into the first water cooler 1, the second water cooler 4 and the interstage water cooler 9 for heat exchange, and the soft water after heat exchange is heated by waste heat and is introduced into the steam boiler. From this structure, carry out integrated design with first water cooler 1 of flue gas entry, second water cooler 4, lubricating oil heat exchanger and interstage water cooler 9, utilize steam boiler water consumption, carry out the flue gas heat transfer of low pressure level, the water cooler heat transfer of design refrigerant for industrial pure water uses interstage air cooler 8 to carry out integrated heat transfer design with surplus heat transfer demand, and three-dimensional integrated layout practices thrift the space.
In the preferred scheme, the whole equipment is highly integrated in a sledding mode, and is integrated through a matched pipeline valve and a control system, so that the equipment can be quickly moved and assembled. By the structure, a set of flue gas high-pressure gas injection oil displacement and prying oil field equipment is formed by three-dimensional layout, the equipment replaces a nitrogen generator, a CO2 compressor and other equipment to have a gas injection function for thickened oil exploitation, flue gas is directly injected into a well at high temperature and high pressure by the aid of the prying equipment, and an efficient emission reduction oil displacement effect is achieved.
In the preferred scheme, the high-temperature and high-pressure flue gas enters an oil layer through an annular channel of the oil well, so that CO2 in the flue gas enters a supercritical state for a period of time underground.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and the scope of the present invention is defined by the claims, and equivalents including technical features described in the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (7)
1. Flue gas high pressure gas injection displacement of reservoir oil one sledge oil field equipment, characterized by: the system comprises a flue gas pipeline (12) and a water supply pipeline (13), wherein the flue gas pipeline (12) is used for assisting thick oil thermal recovery, and the water supply pipeline (13) is used for cooling heat exchange on the flue gas pipeline (12) and preheating boiler inlet water;
a flue gas pipeline (12) is provided with a first water cooler (1), a filter (2), a screw compressor (3), a second water cooler (4), a washing tank (5), a dryer (6) and a reciprocating compressor (7) which are sequentially connected in series, and the flue gas is filtered, dried, pressurized and heated by equipment, so that the high-temperature and high-pressure dry flue gas is injected into an annular channel of an oil well to assist in thermal recovery of thick oil;
the soft water delivery port (10) on the water supply pipeline (13) is communicated with the cooling water inlets of the first water cooler (1) and the second water cooler (4), and the cooling water outlets of the first water cooler (1) and the second water cooler (4) are communicated with the boiler water supply port (11) on the water supply pipeline (13).
2. The flue gas high pressure gas injection oil displacement-sledge oil field equipment according to claim 1, wherein: the reciprocating compressor (7) is in multi-stage compression, the interstage water cooler (9) or the interstage air cooler (8) which are connected in series are arranged among the compressors, the soft water conveying port (10) is communicated with the cooling water inlet of the interstage water cooler (9), and the cooling water outlet of the interstage water cooler (9) is communicated with the boiler water supply port (11).
3. The flue gas high pressure gas injection oil displacement-sledge oil field equipment according to claim 2, wherein: the interstage air cooler (8) and the interstage water cooler (9) are connected in series between each stage of compressor through a control valve;
the number of the interstage water coolers (9) is distributed according to the water requirement of the steam boiler, and the interstage air coolers (8) are used for the rest.
4. The flue gas high pressure gas injection oil displacement-sledge oil field equipment according to claim 1, wherein: the screw compressor (3) and the reciprocating compressor (7) are driven by the two ends of the motor, the screw compressor (3) is pressurized at one stage, and a coupler or a speed regulator is connected with the motor;
the reciprocating compressor (7) adopts two-row four-stage compressors, and the cylinders are configured in a reversed pole difference mode.
5. The flue gas high pressure gas injection oil displacement-sledge oil field equipment according to claim 1, wherein: the heat exchange design is integrated by the first water cooler (1), the second water cooler (4) and the interstage water cooler (9), soft water passing through the steam boiler is used as a refrigerant and is introduced into the first water cooler (1), the second water cooler (4) and the interstage water cooler (9) for heat exchange, and the soft water after heat exchange is heated by utilizing waste heat and is introduced into the steam boiler.
6. The flue gas high pressure gas injection oil displacement-sledge oil field equipment according to claim 1, wherein: the whole equipment is highly integrated in a sledding mode, and is integrated through a matched pipeline valve and a control system, so that the equipment can be quickly moved and assembled.
7. The flue gas high pressure gas injection oil displacement-sledge oil field equipment according to claim 1, wherein: the high-temperature and high-pressure flue gas enters an oil layer through an annular channel of the oil well, so that CO2 in the flue gas enters a supercritical state for a period of time underground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111034008.6A CN113756768A (en) | 2021-09-03 | 2021-09-03 | Flue gas high-pressure gas injection oil displacement and oil field production equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111034008.6A CN113756768A (en) | 2021-09-03 | 2021-09-03 | Flue gas high-pressure gas injection oil displacement and oil field production equipment |
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| CN113756768A true CN113756768A (en) | 2021-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111034008.6A Pending CN113756768A (en) | 2021-09-03 | 2021-09-03 | Flue gas high-pressure gas injection oil displacement and oil field production equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115405860A (en) * | 2022-08-17 | 2022-11-29 | 成都展望能源机械有限公司 | Explosion-proof type flue gas dehydration supercharging device |
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2021
- 2021-09-03 CN CN202111034008.6A patent/CN113756768A/en active Pending
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