CN102900414A - Steam-flue gas mixing fluid generation method for thickened oil thermal recovery - Google Patents
Steam-flue gas mixing fluid generation method for thickened oil thermal recovery Download PDFInfo
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- CN102900414A CN102900414A CN2012103429217A CN201210342921A CN102900414A CN 102900414 A CN102900414 A CN 102900414A CN 2012103429217 A CN2012103429217 A CN 2012103429217A CN 201210342921 A CN201210342921 A CN 201210342921A CN 102900414 A CN102900414 A CN 102900414A
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Abstract
A steam-flue gas mixing fluid generation method for thickened oil thermal recovery belongs to the technical field of thickened oil thermal recovery and boiler equipment. A generation system comprises a boiler, a transition gas flue and a mixing chamber. The steam-flue gas mixing fluid generation method comprises the following steps of: feeding pressurized gas or liquid fuel and air into the hearth of the boiler, mixing and burning in the hearth to generate high-temperature and high-pressure flue gas, and feeding the flue gas into the mixing chamber through the transition gas flue; spraying purified water into the mixing chamber through an atomization plant to form tiny liquid drops, mixing the tiny liquid drops with the high-temperature and high-pressure flue gas in the mixing chamber, heating the mixture by the flue gas to turn into water vapor after being vaporized, and further generating the high-temperature and high-pressure steam-flue gas mixing fluid; and finally, leading the high-temperature and high-pressure steam-flue gas mixing fluid out to a steam injection pipeline. The steam-flue gas mixing fluid generation method has the advantages of reducing flue gas purification and compression links, effectively saving investment and running costs and water resources and obviously reducing the cost of water treatment.
Description
Technical field
The present invention relates to a kind of method for generation of producing high temperature and high pressure steam-flue gas fluid-mixing, belong to heavy crude heat extraction and boiler unit technical field.
Background technology
In recent years, along with heavy crude heat extraction effectiveness variation year by year, viscous crude field was in by steam soak in succession to transition period that other mining type is changed.In various substituted technique, it is most potential a kind of method that flue gas and steam mixed water injection are handled up.Existing notes flue gas result of the test shows, utilizes the onlap effect of flue gas can improve the development degree of top oil reservoir; Utilize the compressible performance of flue gas to can be oil well production displacement of reservoir oil power is provided; Utilize CO
2Carboxylation can reduce viscosity of crude; Utilize the low-temperature oxidation effect of oxygen in the flue gas and the fluid-channeling channel that steam is stopped up in carbonization, improve the oil reservoir steam entry profile, increase steam swept volume coefficient, thereby improve the vertical development degree of Heavy Oil Reservoir, provide a new approach for the huge thick heavy crude reservoir of deep layer further improves development effectiveness.
Conventional realize that the method for flue gas steam mixed water injection is to adopt compressor unit, inject with vapor mixing after flue gas is forced into steam pressure, the after-treatments such as therefore, this method need to dewater to flue gas, purifies, lowers the temperature, pressurization.Because exhaust gas volumn is larger, dewater, purify, the process equipment such as pressurization is numerous and jumbled, invest hugely, limited large-scale application.Based on considering of above factor, can be directly used in the method for generation of the high temperature and high pressure steam of heavy crude heat extraction-flue gas fluid-mixing in the urgent need to a kind of production, to satisfy the needs of actual production.
Summary of the invention
Problems such as the objective of the invention is mixed to live that flue gas dewaters in the method in order to solve existing flue gas steam, purify, the process equipment such as pressurization is numerous and jumbled, investment is huge, large-scale application is difficult proposes the method for generation of the high temperature and high pressure steam that a kind of production can be directly used in heavy crude heat extraction-flue gas fluid-mixing.
Technical scheme of the present invention is as follows:
A kind of steam for heavy crude heat extraction-flue gas fluid-mixing method for generation is characterized in that described method comprises the steps:
1) gas or liquid fuel and air are sent into boiler furnace through pressurization, in burner hearth, mix, burning, produce high temperature and high pressure flue gas, sent in the mixing chamber by transition flue duct;
2) will purify waste water and spray in the mixing chamber by atomization plant, and form fine drop, fine drop is mixed in mixing chamber with high temperature and high pressure flue gas, and is heated up by flue gas, becomes steam after the vaporization, and then generation high temperature and high pressure steam-flue gas fluid-mixing;
3) high temperature and high pressure steam-flue gas fluid-mixing is led to steam injecting pipe.
Among the present invention, described gaseous fuel preferably adopts natural gas or synthesis gas; Liquid fuel preferably adopts heavy oil.The temperature of described high temperature and high pressure flue gas is 1000～1500 ℃, and pressure is 5～9MPa.The temperature of high temperature and high pressure steam-flue gas fluid-mixing is 250 ~ 400 ℃, and pressure is 5 ~ 9MPa.
The present invention has the following advantages and the high-lighting effect: 1. adopt gas or liquid fuel, catch fire easily, after-flame is quick, thereby boiler can be arranged to reduced size, can be according to the field condition flexible arrangement; 2. adopt the adiabatic boiler of high pressure, the compression of flue gas is convenient in the compression distant place of gas or liquid fuel and air, and has reduced gas cleaning and compression link, effectively saves cost of investment and running cost; 3. adopt and purify waste water directly and smoke contact heat exchange, water supply volume is less, saving water resource; 4. owing to there is not heating surface, thereby the requirement of water quality is significantly reduced, condensed oil sewage only needs simple process to come into operation, and significantly reduces cost of water treatment.
Description of drawings
Fig. 1 is for realizing a kind of theory structure schematic diagram of producing high temperature and high pressure steam-flue gas generation systems of the present invention.
Among the figure: 1-gas or liquid fuel and air; 2-boiler; 3-transition flue duct; 4-purify waste water; 5-mixing chamber; 6-high temperature and high pressure steam-flue gas fluid-mixing.
The specific embodiment
Further specify principle of the present invention, concrete structure and preferred forms below in conjunction with accompanying drawing.
Fig. 1 is for realizing a kind of theory structure schematic diagram of producing high temperature and high pressure steam-flue gas generation systems of the present invention, and this system comprises boiler 2, transition flue duct 3 and mixing chamber 5.The wall of boiler, transition flue duct and mixing chamber all is furnished with adiabatic temperature-resistant material in the native system.The method is at first sent into boiler furnace with gas or liquid fuel and air 1 through pressurization, mixes in burner hearth, burning, produces high temperature and high pressure flue gas, is then sent in the mixing chamber 5 by transition flue duct 3; To purify waste water and 4 spray in the mixing chamber 5 by atomization plant, make the formation fine drop of purifying waste water, fine drop and high temperature and high pressure flue gas are in 5 interior mixing of mixing chamber, and heated up by flue gas, become steam after the vaporization, and then produce high temperature and high pressure steam-flue gas fluid-mixing 6, again high temperature and high pressure steam-flue gas fluid-mixing 6 is led to steam injecting pipe.
Its fuel adopts gas or the liquid fuel that does not contain ash content, and gaseous fuel can adopt natural gas or synthesis gas, but is not limited to this; Liquid fuel adopts heavy oil, also can adopt other liquid fuel.Gas or liquid fuel and air 1 are sent into the burner hearth of boiler 2 through pressurization, mix in burner hearth, burning, produce high temperature and high pressure flue gas, its temperature control is in 1000～1500 ℃ of scopes, and pressure is 5～9MPa; The high temperature and high pressure flue gas that produces is sent in the mixing chamber 5 by transition flue duct 3; To purify waste water simultaneously and 4 spray in the mixing chamber 5 by atomization plant, form fine drop, fine drop and high temperature and high pressure flue gas are in 5 interior mixing of mixing chamber, and heated up by flue gas, become steam after the vaporization, and then produce high temperature and high pressure steam-flue gas fluid-mixing 6, and its temperature is 250 ~ 400 ℃, pressure is 5 ~ 9MPa; Finally, high temperature and high pressure steam-flue gas fluid-mixing 6 is led to steam injecting pipe.
Purify waste water fully for what guarantee to spray into that vaporization becomes saturated vapour, the quality m that purifies waste water that the unit interval sprays into
1With flue gas quality m
2Have certain proportioning K, preferred forms of the present invention also will be controlled around this proportioning.Proportioning K can calculate according to following formula:
In the formula, m
1Spray into the quality of purifying waste water of mixing chamber for the unit interval; m
2Enter the flue gas quality of mixing chamber for the unit interval; K is the actual proportioning that sprays into purify waste water quality and the flue gas quality of mixing chamber the unit interval; α is stoichiometric factor, 0＜α≤1; K
0For under the perfect condition hypothesis drop mix with flue gas, when vaporescence does not have thermal loss, the unit interval sprays into the stoichiometric(al) of purify waste water quality and the flue gas quality of mixing chamber; I
11For spraying into the enthalpy of purifying waste water of mixing chamber; I
21For entering the flue gas enthalpy of mixing chamber; I
12Be steam enthalpy in steam-flue gas fluid-mixing; I
22Be flue gas enthalpy in steam-flue gas fluid-mixing.
Claims (4)
1. the steam for heavy crude heat extraction-flue gas fluid-mixing method for generation is characterized in that described method comprises the steps:
1) gas or liquid fuel and air (1) are sent into boiler (2) burner hearth through pressurization, in burner hearth, mix, burning, produce high temperature and high pressure flue gas, sent in the mixing chamber (5) by transition flue duct (3);
2) will purify waste water (4) spray in the mixing chamber (5) by atomization plant, form fine drop, fine drop is mixed in mixing chamber (5) with high temperature and high pressure flue gas, and is heated up by flue gas, become steam after the vaporization, and then produce high temperature and high pressure steam-flue gas fluid-mixing (6);
3) high temperature and high pressure steam-flue gas fluid-mixing (6) is led to steam injecting pipe.
2. a kind of steam for heavy crude heat extraction as claimed in claim 1-flue gas fluid-mixing method for generation is characterized in that: described gaseous fuel employing natural gas or synthesis gas; Liquid fuel adopts heavy oil.
3. a kind of steam for heavy crude heat extraction as claimed in claim 1-flue gas fluid-mixing method for generation, it is characterized in that: the temperature of high temperature and high pressure flue gas is 1000～1500 ℃, pressure is 5～9MPa.
4. a kind of steam for heavy crude heat extraction as claimed in claim 1-flue gas fluid-mixing method for generation, it is characterized in that: the temperature of high temperature and high pressure steam-flue gas fluid-mixing is 250 ~ 400 ℃, pressure is 5 ~ 9MPa.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103429217A CN102900414A (en) | 2012-09-14 | 2012-09-14 | Steam-flue gas mixing fluid generation method for thickened oil thermal recovery |
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| CN2012103429217A CN102900414A (en) | 2012-09-14 | 2012-09-14 | Steam-flue gas mixing fluid generation method for thickened oil thermal recovery |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763397A (en) * | 2015-05-06 | 2015-07-08 | 中国石油大学(华东) | Flue gas resource utilizing system of oil field stream-injecting boiler based on steam injection and application thereof |
| CN106442853A (en) * | 2016-09-07 | 2017-02-22 | 华中科技大学 | Droplet burning experiment device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4398604A (en) * | 1981-04-13 | 1983-08-16 | Carmel Energy, Inc. | Method and apparatus for producing a high pressure thermal vapor stream |
| US4546829A (en) * | 1981-03-10 | 1985-10-15 | Mason & Hanger-Silas Mason Co., Inc. | Enhanced oil recovery process |
| CN2358341Y (en) * | 1999-02-12 | 2000-01-12 | 张广卿 | Heat collecting steam-smoke generator |
| CN2409334Y (en) * | 2000-02-15 | 2000-12-06 | 杨正文 | Steam and gas mixed injector for thickened oil heating production |
| CN1483919A (en) * | 2002-09-20 | 2004-03-24 | 吴锦标 | Mixed gas injection thermal recovery technology |
| CN202203934U (en) * | 2011-08-09 | 2012-04-25 | 江苏大江石油科技有限公司 | Ultra-high pressure combustion device |
-
2012
- 2012-09-14 CN CN2012103429217A patent/CN102900414A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4546829A (en) * | 1981-03-10 | 1985-10-15 | Mason & Hanger-Silas Mason Co., Inc. | Enhanced oil recovery process |
| US4398604A (en) * | 1981-04-13 | 1983-08-16 | Carmel Energy, Inc. | Method and apparatus for producing a high pressure thermal vapor stream |
| CN2358341Y (en) * | 1999-02-12 | 2000-01-12 | 张广卿 | Heat collecting steam-smoke generator |
| CN2409334Y (en) * | 2000-02-15 | 2000-12-06 | 杨正文 | Steam and gas mixed injector for thickened oil heating production |
| CN1483919A (en) * | 2002-09-20 | 2004-03-24 | 吴锦标 | Mixed gas injection thermal recovery technology |
| CN202203934U (en) * | 2011-08-09 | 2012-04-25 | 江苏大江石油科技有限公司 | Ultra-high pressure combustion device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104763397A (en) * | 2015-05-06 | 2015-07-08 | 中国石油大学(华东) | Flue gas resource utilizing system of oil field stream-injecting boiler based on steam injection and application thereof |
| CN106442853A (en) * | 2016-09-07 | 2017-02-22 | 华中科技大学 | Droplet burning experiment device |
| CN106442853B (en) * | 2016-09-07 | 2018-05-22 | 华中科技大学 | A kind of droplet burning experimental provision |
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Application publication date: 20130130 |