CN201999758U - Steam-assisted gravity drainage (SAGD) wet steam injection station system - Google Patents
Steam-assisted gravity drainage (SAGD) wet steam injection station system Download PDFInfo
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- CN201999758U CN201999758U CN2011200922576U CN201120092257U CN201999758U CN 201999758 U CN201999758 U CN 201999758U CN 2011200922576 U CN2011200922576 U CN 2011200922576U CN 201120092257 U CN201120092257 U CN 201120092257U CN 201999758 U CN201999758 U CN 201999758U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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- Y02A20/124—Water desalination
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Abstract
The utility model provides a steam-assisted gravity drainage (SAGD) wet steam injection station system, which comprises a steam generator, a separator, a flash evaporator, a water generator, a steam pocket furnace and a heat exchanger, wherein the separator is used for separating high-dryness steam and high-temperature saline water which are output by a boiler; the flash evaporator is connected with the separator and is used for performing flashing evaporation on the high-temperature saline water separated by the separator so as to generate wet steam and high-concentration saline water; the water generator is connected with the flash evaporator and is used for performing evaporation desalination treatment on the high-concentration saline water generated by the flash evaporator by using the wet steam generated by the flash evaporator so as to generate finished water; the steam pocket furnace is connected with the water generator and is used for heating the finished water generated by the water generator to form superheated steam; and the heat exchanger is connected with the water generator and the steam generator respectively and is used for recycling flue gas exhaust heat which is generated by the steam generator and is used as a supplementary heat source for performing evaporation desalination treatment by using the water generator. By the system, energy and water can be saved, and the utilization rate of heat quantity can be improved.
Description
Technical field
The utility model relates to oil field oil production technology technical field, particularly, relates to a kind of SAGD wetting vapour and annotates vapour station system.
Background technology
At present, for the exploitation of viscous crude, particularly special viscous crude and super viscous crude field, mainly adopt mining type to comprise: steam stimulation, steam flood and SAGD (SAGD) etc.Wherein, the ultimate recovery factor of steam stimulation has only about 25%, and the vapour driving oil recovery yield is higher relatively can be about 60%, and these two kinds of mining types are viscous oil recovery technology early, also are subjected to the restriction of some conditions.SAGD be heavy crude producing up-to-date than mature technology, obtained the fast industrial popularization in the North America, this surpasses half for world's remaining reserves is the state of viscous crude, the SAGD technology has bigger development space.
At present, the domestic preliminary production technique of grasping SAGD, and begin to carry out industrialization promotion, but grasp the practical technique that produces superheated vapour not yet.Test in place research is for many years passed through in the North America, has mainly adopted MVC to cooperate the processing method of drum boiler, satisfies its on-the-spot needs substantially.But, because facility investment height, cost are higher, therefore also and not exclusively be fit to the situation in domestic oil field.Along with the domestic research and experiment work of actively carrying out this respect, build up high mass dryness fraction at present and annotated the vapour station, still, in recovery process, discharge high temperature salt solution, this does not also meet the energy-saving and water-saving requirement.
In addition, the steam stimulation mode is mainly adopted in China's viscous oil recovery, annotates vapour and adopts wet steam generator, and steam quality has only 75-80%, and the heat content that unit mass water carries is low, and system thermal efficiency is low, has caused ultimate recovery factor low.
In sum, notes vapour of the prior art station system when gathering viscous crude, exist thermo-efficiency low, can't realize the problem of energy-saving and water-saving, and then caused the low problem of ultimate recovery factor.
The utility model content
The main purpose of the utility model embodiment is to provide a kind of SAGD wetting vapour to annotate vapour station system, has the problem that thermo-efficiency is low, can't realize energy-saving and water-saving to solve notes vapour of the prior art station system when gathering viscous crude.
To achieve these goals, the utility model embodiment provides a kind of SAGD wetting vapour to annotate vapour station system, described system comprises vapour generator and separator, wherein, described separator is used for the high-quality steam and the high temperature salt solution of separate boiler output, described system also comprises: flasher, water-producing apparatus, drum boiler and interchanger, wherein, described separator is connected with described flasher, described flasher is connected with described water-producing apparatus, described water-producing apparatus is connected with described drum boiler, described interchanger is connected with vapour generator with described water-producing apparatus respectively, described flasher carries out flash distillation with the isolating high temperature salt solution of described separator to be handled, to produce wetting vapour and high density salt solution, the high density salt solution that the wetting vapour that described water-producing apparatus produces described flasher produces described flasher evaporates desalination handles the finished product water that generates, described drum boiler is heated into superheated vapour with the finished product water that described water-producing apparatus generates, described interchanger reclaims the fume afterheat that described vapour generator produces, to evaporate the supplemental heat source that desalination is handled as described water-producing apparatus.
By means of technique scheme, handle again after the high-temperature water that system is produced by flasher, water-producing apparatus, drum boiler separates and use, and recycle the supplemental heat source of the fume afterheat of vapour generator generation as water-producing apparatus by interchanger, can realize energy-saving and water-saving, improve the utilization of heat, thereby can overcome the problem that the thermo-efficiency that notes vapour of the prior art station system exists is low, can't realize energy-saving and water-saving when gathering viscous crude.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a structured flowchart of annotating vapour station system according to the SAGD wetting vapour of the utility model embodiment;
Fig. 2 is the concrete structure synoptic diagram that SAGD wetting vapour of the prior art is annotated vapour station system;
Fig. 3 is a concrete structure synoptic diagram of annotating vapour station system according to the SAGD wetting vapour of the utility model embodiment;
Fig. 4 annotates the schema of the feedwater recoverying and utilizing method of vapour station system according to the utility model embodiment based on the SAGD wetting vapour.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
Because there is the problem that thermo-efficiency is low, can't realize energy-saving and water-saving in notes vapour of the prior art station system when gathering viscous crude, and then caused ultimate recovery factor low, based on this, the utility model embodiment provides a kind of SAGD wetting vapour to annotate vapour station system and feedwater recoverying and utilizing method thereof, to address the above problem.Below in conjunction with accompanying drawing the utility model is elaborated.
Embodiment one
The utility model embodiment provides a kind of SAGD wetting vapour to annotate vapour station system, as shown in Figure 1, this system comprises: vapour generator 1, separator 2, flasher 3, water-producing apparatus 4, drum boiler 5, interchanger 6, wherein, vapour generator 1, separator 2, flasher 3, water-producing apparatus 4, drum boiler 5 connect successively, interchanger 6 connects vapour generator 1 and water-producing apparatus 4 respectively, below describes the principle of work that the SAGD wetting vapour is annotated vapour station system in detail.
The high-quality steam and the high temperature salt solution of the output of separator separate boiler, flasher is used for that the isolating high temperature salt solution of separator is carried out flash distillation to be handled, to produce wetting vapour and high density salt solution, the high density salt solution that the wetting vapour that water-producing apparatus is used for that flasher is produced produces flasher evaporates desalination handles the finished product water that generates, drum boiler is used for the finished product water that water-producing apparatus generates is heated into superheated vapour, interchanger, be used for the fume afterheat that the recovered steam producer produces, to evaporate the supplemental heat source that desalination is handled as water-producing apparatus.
By above description as can be seen, handle again after the high-temperature water that system is produced by flasher, water-producing apparatus, drum boiler separates and use, and recycle the supplemental heat source of the fume afterheat of vapour generator generation as water-producing apparatus by interchanger, can realize energy-saving and water-saving, the utilization that improves heat, overcome the problem that the thermo-efficiency that notes vapour of the prior art station system exists is low, can't realize energy-saving and water-saving when gathering viscous crude, and then improved the ultimate recovery factor of system.
In order further to understand the utility model embodiment, below provide an example.
Fig. 2 is the concrete structure synoptic diagram that SAGD wetting vapour of the prior art is annotated vapour station system, and this system comprises separator and vapour generator, and separator is used for the high-quality steam and the high temperature salt solution of separate boiler output.
Fig. 3 is a concrete structure synoptic diagram of annotating vapour station system according to the SAGD wetting vapour of the utility model embodiment, and as shown in Figure 3, than existing system shown in Figure 2, the utility model embodiment has mainly done following transformation to original system:
1, on the basis of original wet steam generator, increased the superheater (not shown), realized the product steam superheating in the radiation section bottom;
2, the high saliferous discharge pipe behind original separator has increased flasher and water-producing apparatus, flasher is to high brackish water step-down flash distillation, steam after the flash distillation as the thermal source of water-producing apparatus to flash distillation after high brackish water carry out evaporation process, the finished product water of generation is as oiler feed;
3, for improving boiler thermal output, on the original steam producer, increased interchanger and reclaimed waste heat in the smoke evacuation as the supplemental heat source of water-producing apparatus.
As shown in Figure 3, in the utility model embodiment, this system has specifically increased flasher, water-producing apparatus, drum boiler, interchanger.Wherein, after heating feedwater, separator is separated into steam and high temperature salt solution, wherein, upwards the steam of evaporation is used for the displacement of reservoir oil, high temperature salt solution enters flasher, after heating to high temperature salt solution, flasher further generates wetting vapour and high density salt solution, flasher exports wetting vapour and the high density salt solution that generates in the water-producing apparatus to then, in water-producing apparatus, water-producing apparatus utilizes the heat of wetting vapour that high density salt solution is evaporated desalination and handles, be processed into boiler available qualified water, then qualified water is sent to drum boiler and is heated into superheated vapour, export vapour generator to and handle, and vapour generator transfers to water-producing apparatus with the heat that produces by interchanger, to evaporate the supplemental heat source that desalination is handled as water-producing apparatus.
Like this, by flasher, water-producing apparatus, drum boiler and interchanger, the high saline sewage and the wetting vapour that produce in this system can effectively be utilized, and have accomplished to save water and energy, and have reduced discharging, improve water use efficiency, the utilization that has improved the energy.
Said system is to annotate the improvement of carrying out on the vapour station at the existing 23t/h wet saturated steam in oil field, make full use of the isolating high temperature salt solution of steam separator, on the one hand as power, on the other hand as handling the water source, make it to produce high-quality water and be used to produce steam, reach and not only economize on water but also purpose of energy saving.Adopt the associating de-mineralized water treatment technology of flue gas waste heat recovery, hot water vacuum flashing, MED multiple-effect evaporation, but finish high temperature brinish energy recovery, the flue gas waste heat recovery that improves the stove effect, the technological improvement of producing the high-quality water of reuse boiler.But the high-quality water reuse vapour generator that native system produces also can be used for dum boiler and produces superheated vapour, and the processing water source that relates to here is high temperature salt solution, wet steam generator feedwater, clear water, sewage and mixing water thereof.
Embodiment two
The utility model embodiment also provides a kind of feedwater recoverying and utilizing method based on SAGD wetting vapour notes vapour station system, and Fig. 4 is the schema of this method, and as shown in Figure 4, this method comprises:
Step 401, the high-quality steam and the high temperature salt solution of separate boiler output;
Step 402 is carried out flash distillation with isolating high temperature salt solution and is handled, to produce wetting vapour and high density salt solution;
Step 403 is handled the finished product water that the high density salt solution that produces evaporates desalination processing generation with the wetting vapour that the flash distillation processing produces to flash distillation;
Step 404 is heated into superheated vapour with the finished product water that generates;
Step 405 reclaims the SAGD wetting vapour and annotates the fume afterheat that vapour station system produces, with the supplemental heat source of handling as the evaporation desalination.
By the high temperature salt solution of boiler output is handled again, and the fume afterheat that recovery SAGD wetting vapour notes vapour station system produces is thermal source as a supplement, can realize energy-saving and water-saving, the utilization that improves heat, overcome the problem that the thermo-efficiency that notes vapour of the prior art station system exists is low, can't realize energy-saving and water-saving when gathering viscous crude, and then improved the ultimate recovery factor of system.
The implementation procedure of above steps can repeat no more here with reference to the associated description in the foregoing description one particularly.
As seen from the above description, than prior art, the utility model embodiment has realized that high saliferous divides dried up recycling, has realized the recovery with waste heat of making full use of of water resources, and the superheated vapour that system produces can improve steam quality.
In sum, a kind of advanced practical wetting vapour that the utility model embodiment provides is annotated and is satisfied with the processing method that the SAGD exploitation requires after improve at the vapour station, can improve the system efficiency of annotating the vapour station, thereby reach energy saving purposes.Adopt this processing method, the vapour station is annotated in existing a large amount of viscous oil recovery reconstruct into high mass dryness fraction or superheated vapour notes vapour station, this meets the requirement of low-carbon economy, recycling economy for improving steam stimulation, steam flood, SAGD production technique level, energy-saving and water-saving, the positive pushing effect that reduces cost.
One of ordinary skill in the art will appreciate that all or part of step that realizes in the foregoing description method can instruct relevant hardware to finish by program, this program can be stored in the computer read/write memory medium, such as ROM/RAM, magnetic disc, CD etc.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is a specific embodiment of the utility model; and be not used in and limit protection domain of the present utility model; all within spirit of the present utility model and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (1)
1. a SAGD wetting vapour is annotated vapour station system, and described system comprises vapour generator and separator, and wherein, the high-quality steam and the high temperature salt solution of described separator separate boiler output is characterized in that described system also comprises:
Flasher, water-producing apparatus, drum boiler and interchanger, wherein,
Described separator is connected with described flasher, and described flasher is connected with described water-producing apparatus, and described water-producing apparatus is connected with described drum boiler, and described interchanger is connected with vapour generator with described water-producing apparatus respectively,
Described flasher carries out flash distillation with the isolating high temperature salt solution of described separator to be handled, to produce wetting vapour and high density salt solution, the high density salt solution that the wetting vapour that described water-producing apparatus produces described flasher produces described flasher evaporates desalination handles the finished product water that generates, described drum boiler is heated into superheated vapour with the finished product water that described water-producing apparatus generates, described interchanger reclaims the fume afterheat that described vapour generator produces, to evaporate the supplemental heat source that desalination is handled as described water-producing apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200922576U CN201999758U (en) | 2011-03-31 | 2011-03-31 | Steam-assisted gravity drainage (SAGD) wet steam injection station system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200922576U CN201999758U (en) | 2011-03-31 | 2011-03-31 | Steam-assisted gravity drainage (SAGD) wet steam injection station system |
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| CN201999758U true CN201999758U (en) | 2011-10-05 |
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| CN2011200922576U Expired - Lifetime CN201999758U (en) | 2011-03-31 | 2011-03-31 | Steam-assisted gravity drainage (SAGD) wet steam injection station system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720474A (en) * | 2011-03-31 | 2012-10-10 | 中国石油天然气股份有限公司 | SAGD (steam assisted gravity drainage) wet steam injection station system, boiler water recycling method thereof |
| CN102854294A (en) * | 2011-10-17 | 2013-01-02 | 中国石油天然气股份有限公司 | System used for detecting water quality standard in oilfield superheated steam injection technology, and its method |
| CN104276614A (en) * | 2014-09-28 | 2015-01-14 | 北京和默能源技术有限公司 | Desalination method for uniflow steam-injection boiler |
| CN105163825A (en) * | 2012-07-16 | 2015-12-16 | 沙特阿拉伯石油公司 | Produced water treatment process at crude oil and natural gas processing facilities |
-
2011
- 2011-03-31 CN CN2011200922576U patent/CN201999758U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102720474A (en) * | 2011-03-31 | 2012-10-10 | 中国石油天然气股份有限公司 | SAGD (steam assisted gravity drainage) wet steam injection station system, boiler water recycling method thereof |
| CN102720474B (en) * | 2011-03-31 | 2015-09-09 | 中国石油天然气股份有限公司 | SAGD moist steam steam injection station system and boiler water recoverying and utilizing method thereof |
| CN102854294A (en) * | 2011-10-17 | 2013-01-02 | 中国石油天然气股份有限公司 | System used for detecting water quality standard in oilfield superheated steam injection technology, and its method |
| CN102854294B (en) * | 2011-10-17 | 2015-10-14 | 中国石油天然气股份有限公司 | For detecting the system and method for water quality standard in the superheated steam injection technique of oil field |
| CN105163825A (en) * | 2012-07-16 | 2015-12-16 | 沙特阿拉伯石油公司 | Produced water treatment process at crude oil and natural gas processing facilities |
| CN104276614A (en) * | 2014-09-28 | 2015-01-14 | 北京和默能源技术有限公司 | Desalination method for uniflow steam-injection boiler |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20111005 Effective date of abandoning: 20150909 |
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| RGAV | Abandon patent right to avoid regrant |