CN110219628B - Flue gas thermal oil extraction equipment - Google Patents
Flue gas thermal oil extraction equipment Download PDFInfo
- Publication number
- CN110219628B CN110219628B CN201810173847.8A CN201810173847A CN110219628B CN 110219628 B CN110219628 B CN 110219628B CN 201810173847 A CN201810173847 A CN 201810173847A CN 110219628 B CN110219628 B CN 110219628B
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- CN
- China
- Prior art keywords
- flue gas
- outlet
- heat exchange
- waste heat
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 239000003546 flue gas Substances 0.000 title claims abstract description 85
- 238000000605 extraction Methods 0.000 title abstract description 11
- 238000011084 recovery Methods 0.000 claims abstract description 42
- 239000002918 waste heat Substances 0.000 claims abstract description 36
- 239000007789 gas Substances 0.000 claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims abstract description 12
- 238000002156 mixing Methods 0.000 claims abstract description 12
- 230000001105 regulatory effect Effects 0.000 claims abstract description 4
- 239000000779 smoke Substances 0.000 claims description 7
- 238000000746 purification Methods 0.000 claims description 6
- 230000003584 silencer Effects 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 abstract description 8
- 238000004064 recycling Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 19
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 239000002253 acid Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000012188 paraffin wax Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010793 Steam injection (oil industry) Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002803 fossil fuel Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007928 solubilization Effects 0.000 description 2
- 238000005063 solubilization Methods 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- -1 and meanwhile Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- 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
- E21B37/00—Methods or apparatus for cleaning boreholes or wells
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
Abstract
The invention discloses flue gas thermal oil extraction equipment which comprises a waste heat recovery heat exchange system, a flue gas pressurizing system, a cooling system, a purifying and filtering system, a gas mixing system and a flow regulating and controlling system. The inlet of the waste heat recovery heat exchange system is communicated with the flue gas outlet of the engine; the flue gas supercharging system is connected with the engine and is connected with the waste heat recovery and heat exchange system; the outlet of the waste heat recovery heat exchange system is sequentially connected with a cooling system and a purifying and filtering system; the inlet of the gas mixing system is respectively connected with the outlet of the second flow path of the waste heat recovery heat exchange system and the outlet of the flue gas pressurizing system; the inlet of the flow regulation control system is connected with the flue gas pressurizing system, and the outlet is respectively connected with the waste heat recovery heat exchange system and the gas mixing system. The method utilizes the flue gas generated by the engine in the power system of the engine, and can increase the yield of oil extraction operation by recycling, thereby saving a flue gas generating device and realizing energy recycling and zero emission of waste gas.
Description
Technical Field
The invention relates to the technical field of waste gas treatment and oil extraction, in particular to flue gas thermal oil extraction equipment.
Background
At present, the oilfield flue gas driving technology is widely applied to oilfield oil extraction and yield increasing operations, but the conventional technology needs to provide a separate flue gas generating device (such as a boiler), a purifying device, a cooling device, a pressurizing device (such as a diesel engine driven supercharger) and the like, and power elements of the devices not only need to consume a large amount of fossil fuel to generate high-temperature gas pollutants, but also have a huge structure and complex process flow. There are no reports of oil recovery from thermal injection wells using engine flue gas.
Disclosure of Invention
The invention aims at overcoming the defects existing in the prior art, and provides engine flue gas thermal oil extraction and yield increase operation equipment which is reasonable in structure, high in efficiency, energy-saving, environment-friendly and low in use cost, and realizes energy recycling and zero emission of waste gas.
The technical scheme of the invention is as follows: a flue gas thermal oil recovery apparatus comprising
The first flow inlet of the waste heat recovery heat exchange system is communicated with the flue gas outlet of the engine through a pipeline;
the power end of the smoke supercharging system is connected with the power output end of the engine, and the smoke outlet of the smoke supercharging system is connected with the second flow inlet of the waste heat recovery heat exchange system through a pipeline;
the inlet of the cooling system is connected with the first flow outlet of the waste heat recovery heat exchange system;
the inlet of the purifying and filtering system is connected with the outlet of the cooling system;
the inlet of the gas mixing system is respectively connected with the outlet of the second flow path of the waste heat recovery heat exchange system and the outlet of the flue gas pressurizing system;
the inlet of the flow regulation control system is connected with the outlet of the flue gas pressurization system through a pipeline, one outlet of the flow regulation control system is connected with the second flow inlet of the waste heat recovery heat exchange system through a pipeline, and the other outlet of the flow regulation control system is connected with the gas mixing system through a pipeline.
And a flue gas outlet of the engine is respectively communicated with a first flow inlet of the waste heat recovery heat exchange system and external air through a three-way control valve.
And a silencer is arranged on a pipeline which is communicated with the outside air through the three-way control valve.
The waste heat recovery heat exchange system is a waste heat recovery heat exchanger.
The flue gas pressurizing system is a flue gas supercharger.
The cooling system is a cooler, the purifying and filtering system is a filter, and the gas mixing system is a gas mixer.
The flow regulation control system is a three-way proportional regulating valve.
Compared with the prior art, the invention has the following advantages: the high-temperature and high-pressure flue gas is obtained by utilizing the flue gas generated by an engine in a self power system after waste heat utilization, purification, filtration and pressurization, is used for oilfield thick oil viscosity reduction, solubilization, blockage removal, oil displacement, scale removal, paraffin removal and other oilfield thermal well injection oil extraction and yield increase operations, not only saves a flue gas generating device, has reasonable structure, but also realizes the dual aims of energy recycling and zero exhaust emission, and realizes CO 2 And the sealing and storage of the gas reduce the greenhouse effect.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure: 1. the device comprises a smoke supercharger 2, an engine 3, a three-way control valve 4, a silencer 5, a waste heat recovery heat exchanger 6, a cooler 7, a gas mixer 8, a filter 9, an electric proportional control valve 51, a first flow inlet 52, a first flow outlet 53, a second flow inlet 54 and a second flow outlet.
Detailed Description
The invention is further illustrated by the following examples in connection with the accompanying drawings.
Referring to fig. 1, a flue gas thermal oil recovery apparatus includes a waste heat recovery heat exchange system, a flue gas pressurization system, a cooling system, a purification filtration system, a gas mixing system, and a flow adjustment control system.
The flue gas pressurizing system mainly comprises a flue gas pressurizing machine 1, the pressure of flue gas can be pressurized to 50Mpa at most, and the flue gas pressurizing machine 1 is resistant to acid gas corrosion of the flue gas;
the waste heat recovery heat exchange system mainly comprises a waste heat recovery heat exchanger 5, wherein the waste heat recovery heat exchanger 5 is of a tank structure, a heat exchange coil is arranged in the waste heat recovery heat exchanger and is mainly used for buffering flue gas flow, a heat exchange unit is provided for high-temperature flue gas and supercharged low-temperature flue gas, the temperature of the supercharged flue gas after heat exchange can be raised to more than 300 ℃, and meanwhile, the high-temperature flue gas is cooled, so that the energy consumption of a subsequent cooling system is reduced; the waste heat recovery heat exchanger 5 comprises a first flow inlet 51, a first flow outlet 52, a second flow inlet 53 and a second flow outlet 54, wherein the first flow inlet 51 is communicated with a flue gas outlet of the engine 2, high-temperature flue gas enters the cooler 6 through the first flow outlet 52 after entering heat exchange through the first flow inlet 51, and pressurized flue gas of the flue gas supercharger 1 enters the gas mixer 7 through the second flow outlet 54 after entering heat exchange through the second flow inlet 53.
The main component of the power system is an engine 2 which provides power for a flue gas booster 1 by burning fossil fuel and simultaneously generates high-temperature flue gas and other waste gas substances, and the waste gas can be controlled by a flue gas outlet of the engine 2 through a three-way control valve 3 and is discharged into the atmosphere after being silenced by a silencer 4, or exchanges heat with low-temperature flue gas generated by the flue gas booster system through a waste heat recovery heat exchanger 5, so that the switching of high-temperature flue gas injection well and low-temperature flue gas injection well can be finally realized.
The cooling system mainly comprises a cooler 6, cooling medium water or air, an inlet of the cooler 6 is connected with a first flow outlet 52 through a pipeline, and the flue gas subjected to high-temperature heat exchange is cooled to be below 100 ℃ so as to provide required temperature conditions for the subsequent purification and filtration and flue gas pressurization system.
The purifying and filtering system mainly comprises a filter 8 for removing water, oil and particles, an inlet of the filter 8 is connected with an outlet of the cooler 6 through a pipeline, and an outlet of the filter 8 is connected with the flue gas supercharger 1 through a pipeline to provide clean flue gas for the flue gas supercharger 1.
The gas mixing system mainly comprises a gas mixer 7 and is mainly used for mixing high-temperature and low-temperature flue gas, and meanwhile, medicaments can be added to reduce corrosion of acid flue gas to a steam injection pipeline, so that stable and uniform discharge of final mixed gas is realized, and good oil displacement, viscosity reduction, blockage removal and paraffin removal effects are achieved.
The flow regulation control system mainly comprises an electric proportional control valve 9, namely, an inlet of the electric proportional control valve 9 is connected with an outlet of the flue gas supercharger 1 through a pipeline, one outlet of the electric proportional control valve 9 is connected with a second flow inlet 53 of the waste heat recovery heat exchanger 5 through a pipeline, and the other outlet of the electric proportional control valve 9 is connected with the gas mixer 7 through a pipeline, so that the temperature of final outlet gas can be accurately controlled by proportionally regulating the flow of the flue gas of the product needing heat exchange entering the waste heat recovery heat exchanger 5 and the flow of the low-temperature flue gas entering the gas mixer 7.
The specific process flow and the combination relation are as follows: the engine 2 provides power for the smoke booster 1 and generates high-temperature flue gas waste gas, and the high-temperature flue gas waste gas can enter the waste heat recovery heat exchanger 5 through the three-way control valve 3 to exchange heat with the flue gas boosted by the smoke booster unit 1, and can also enter the muffler 4 through the three-way control valve 3 to be discharged to the atmosphere; the temperature of the flue gas after heat exchange can be raised to above 300 ℃, and then the flue gas enters the gas mixer 7 through the second flow outlet 54 and the pipeline; meanwhile, the flue gas enters the cooler 6 through the first flow outlet 52 after heat exchange and temperature reduction, the temperature can be reduced to below 100 ℃, then enters the filter 8 for removing water, oil and particles, enters the sulfur-resistant flue gas supercharger 1 after purification and filtration, reaches 50MPa after supercharging, and enters the gas mixer 7 through the electric proportional control valve 9; due to the addition of the three-way proportional control valve 9 between the flue gas booster 1 and the waste heat recovery heat exchanger 5 lines, the temperature of the final exhaust gas can be controlled by proportionally controlling the flow of high temperature flue gas entering the waste heat recovery heat exchanger 5 for the required heat exchange and the flow of low temperature flue gas entering the gas mixer 8. In order to reduce the corrosion of the steam injection pipe by the acid gases in the flue gas, a medicament may be added to the gas mixer 7.
The invention utilizes the engine flue gas as the air source injection well to realize the thermal oil extraction, thereby not only realizing the reutilization of waste gas, but also solving the problem of environmental pollution caused by the exhaust of the engine flue gas and realizing CO 2 The sealing and storing of the gas reduces the greenhouse effect, utilizes the waste heat of the engine flue gas to heat the final product gas, not only realizes the reutilization of energy sources, but also produces high-temperature and high-pressure flue gas, and has good yield increasing effects on the thermal oil extraction and yield increasing operations of oil fields such as thickened oil viscosity reduction, solubilization, blockage removal, oil displacement, scale removal, paraffin removal and the like.
The present invention is not limited to the above-described embodiments, and various changes may be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the contents after the changes still fall within the scope of the present invention.
Claims (5)
1. A flue gas thermal oil recovery apparatus, characterized by: comprising
The first flow inlet of the waste heat recovery heat exchange system is communicated with the flue gas outlet of the engine through a pipeline;
the power end of the smoke supercharging system is connected with the power output end of the engine;
the inlet of the cooling system is connected with the first flow outlet of the waste heat recovery heat exchange system;
the inlet of the purification and filtration system is connected with the outlet of the cooling system, and flue gas enters the flue gas pressurizing system after passing through the purification and filtration system;
the inlet of the gas mixing system is connected with the second flow outlet of the waste heat recovery heat exchange system;
the inlet of the flow regulation control system is connected with the outlet of the flue gas pressurizing system through a pipeline, one outlet of the flow regulation control system is connected with the second flow inlet of the waste heat recovery heat exchange system through a pipeline, and the other outlet of the flow regulation control system is connected with the inlet of the gas mixing system through a pipeline;
the waste heat recovery heat exchange system is a waste heat recovery heat exchanger; the flue gas pressurizing system is a flue gas supercharger.
2. A flue gas thermal oil recovery plant according to claim 1, characterized in that: and a flue gas outlet of the engine is respectively communicated with a first flow inlet of the waste heat recovery heat exchange system and external air through a three-way control valve.
3. A flue gas thermal oil recovery plant according to claim 2, characterized in that: and a silencer is arranged on a pipeline which is communicated with the outside air through the three-way control valve.
4. A flue gas thermal oil recovery plant according to claim 1, characterized in that: the cooling system is a cooler, the purifying and filtering system is a filter, and the gas mixing system is a gas mixer.
5. A flue gas thermal oil recovery plant according to claim 1, characterized in that: the flow regulation control system is a three-way proportional regulating valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173847.8A CN110219628B (en) | 2018-03-02 | 2018-03-02 | Flue gas thermal oil extraction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810173847.8A CN110219628B (en) | 2018-03-02 | 2018-03-02 | Flue gas thermal oil extraction equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110219628A CN110219628A (en) | 2019-09-10 |
| CN110219628B true CN110219628B (en) | 2024-04-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810173847.8A Active CN110219628B (en) | 2018-03-02 | 2018-03-02 | Flue gas thermal oil extraction equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN110219628B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2755778C1 (en) * | 2021-02-20 | 2021-09-21 | федеральное государственное бюджетное образовательное учреждение высшего образования «Санкт-Петербургский горный университет» | Method for control of asphalt-resin-paraffin deposits formation in lift pipes during gaslift operation of wells |
| CN113756768A (en) * | 2021-09-03 | 2021-12-07 | 中石化石油机械股份有限公司三机分公司 | Flue gas high-pressure gas injection oil displacement and oil field production equipment |
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2018
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| JP2006124442A (en) * | 2004-10-27 | 2006-05-18 | Hitachi Eng Co Ltd | Method for feeding water to heat recovery system and exhaust heat recovery boiler |
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| CN110219628A (en) | 2019-09-10 |
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