CN112082143A - Offshore thickened oil steam injection and discharge water recycling system - Google Patents
Offshore thickened oil steam injection and discharge water recycling system Download PDFInfo
- Publication number
- CN112082143A CN112082143A CN202010933898.3A CN202010933898A CN112082143A CN 112082143 A CN112082143 A CN 112082143A CN 202010933898 A CN202010933898 A CN 202010933898A CN 112082143 A CN112082143 A CN 112082143A
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- Prior art keywords
- steam injection
- water
- boiler
- outlet
- inlet
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 46
- 238000004064 recycling Methods 0.000 title claims abstract description 33
- 239000000295 fuel oil Substances 0.000 claims abstract description 16
- 239000003129 oil well Substances 0.000 claims abstract description 8
- 238000005260 corrosion Methods 0.000 claims description 14
- 230000007797 corrosion Effects 0.000 claims description 14
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
- 239000010935 stainless steel Substances 0.000 claims description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 230000001502 supplementing effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 6
- 239000000243 solution Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
-
- 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
- E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B37/00—Component parts or details of steam boilers
- F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
- F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
- F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D7/00—Auxiliary devices for promoting water circulation
- F22D7/06—Rotary devices, e.g. propellers
- F22D7/08—Arrangements of pumps, e.g. outside the boilers
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The invention relates to a system for recycling offshore heavy oil steam injection and discharge water, which comprises a steam injection boiler, wherein a first outlet of the steam injection boiler is connected with a wellhead of an offshore oil well and used for outputting steam to the offshore oil well; the inlet of the drainage expansion device is connected with the second outlet of the steam injection boiler and is used for collecting the steam which does not reach the standard or is temporarily discharged; the input end of the drainage recycling pump is connected with the outlet of the drainage expansion device; the first inlet of the boiler feed water treatment device is connected with the feed water device, and the second inlet of the boiler feed water treatment device is connected with the output end of the drainage recycling pump; and the inlet of the water supply pressurizer is connected with the outlet of the boiler water supply treatment device, and the outlet of the water supply pressurizer is connected with the inlet of the steam injection boiler and used for supplementing pressurized water to the steam injection boiler. The device realizes the recycling of the discharged water, solves the problem of the discharged water in the offshore engineering on one hand, and saves the qualified boiler water on the other hand.
Description
Technical Field
The invention relates to a system for recycling exhaust water of steam injection of marine thickened oil, in particular to a system for recycling and circularly utilizing the exhaust water when a steam injection boiler is started, stopped and has a system fault in marine thickened oil steam injection development engineering.
Background
In the heavy oil thermal recovery development project, a steam injection boiler system needs to be provided with a corresponding drainage expansion device for collecting steam which cannot meet the steam injection requirement when the steam injection boiler is started and steam which is temporarily discharged when the boiler is shut down and the system fails. In the land heavy oil thermal recovery development project, the drainage expansion device is generally an open device, the water tank of the drainage expansion device is an open water tank, and collected drainage is directly discharged after being cooled. However, for the development of thick oil on the sea, on one hand, the discharge is strictly limited, and on the other hand, the water treatment system is complex and the cost of stored water is high, so that the discharged water needs to be recovered and recycled.
Disclosure of Invention
Aiming at the outstanding problems, the invention provides a system for recycling the steam injection and discharge water of the offshore heavy oil, which realizes the recycling of the discharge water by configuring a closed water tank and a corrosion-resistant stainless steel drain flash tank, solves the problem of the discharge water in offshore engineering on one hand, and saves qualified boiler water on the other hand.
In order to achieve the purpose, the invention adopts the following technical scheme:
a system for recycling steam injection and discharge water of offshore thickened oil comprises:
the first outlet of the steam injection boiler is connected with the wellhead of the offshore oil well and is used for outputting steam to the offshore oil well;
the inlet of the drainage expansion device is connected with the second outlet of the steam injection boiler and is used for collecting the steam which does not reach the standard or is temporarily discharged;
the input end of the drainage recycling pump is connected with the outlet of the drainage expansion device;
a first inlet of the boiler feed water treatment device is connected with the feed water device, and a second inlet of the boiler feed water treatment device is connected with the output end of the drainage recycling pump;
and the inlet of the water supply supercharger is connected with the outlet of the boiler water supply treatment device, and the outlet of the water supply supercharger is connected with the inlet of the steam injection boiler and used for supplying pressurized water to the steam injection boiler.
The offshore heavy oil steam injection and discharge water recycling system is characterized in that preferably, the drainage expansion device comprises an expansion tank, a water tank and a pressure reducer, an inlet of the pressure reducer is connected with a second outlet of the steam injection boiler, an outlet of the pressure reducer is connected with an inlet of the expansion tank, an outlet of the expansion tank is connected with an inlet of the water tank, and an outlet of the water tank is connected with an input end of the drainage recycling pump.
The offshore heavy oil steam injection and discharge water recycling system preferably adopts a closed water tank, so that the pollution of the recovered steam is avoided.
The offshore heavy oil steam injection and discharge water recycling system is characterized in that the inner walls of the flash tank and the water tank are preferably made of warm corrosion-resistant stainless steel.
The offshore heavy oil steam injection and discharge water recycling system preferably comprises the following main components: less than or equal to 0.02 wt% of C, less than or equal to 0.02 wt% of Si, less than or equal to 0.8 wt% of Mn, 24.5-26.0 wt% of Cr, 20.0-22.0 wt% of Ni and the balance of Fe.
Preferably, the corrosion resistance of the corrosion-resistant stainless steel is tested by a stainless steel 65% nitric acid corrosion test method (GB4334.3-84), and the corrosion rate is 0.037 g/(m)2H). The stainless steel can resist high temperature of more than 1000 ℃.
The offshore heavy oil steam injection and discharge water recycling system adopts a new water tank volume design method, the whole process time of boiler start, boiler shutdown and the like is not required to be considered during the water tank volume design, the volume of the water tank is effectively reduced, and compared with the conventional water tank, the volume can be reduced by more than 50%.
Due to the adoption of the technical scheme, the invention has the following advantages:
the invention realizes the recycling of the discharged water by configuring the closed water tank and the drain flash tank made of corrosion-resistant stainless steel, solves the problem of the discharged water in offshore engineering on one hand, and saves qualified boiler water on the other hand; meanwhile, the volume of the water tank is greatly reduced, and space and weight are saved for the offshore platform.
Drawings
FIG. 1 is a schematic flow diagram of a system for recycling the steam injection and discharge water of the offshore heavy oil according to the present invention;
FIG. 2 is a schematic structural diagram of a drainage flash vessel in the system for recycling the steam injection and discharge water of the offshore heavy oil according to the present invention;
the reference numerals in the figures are as follows:
1-steam injection boiler; 2-a hydrophobic expansion device; 3-a drainage recycling pump; 4-boiler feed water treatment facilities; 5-a water supply supercharger; 6-a first switching valve; 7-a second switching valve; 8-a flash tank; 9-a water tank; 10-pressure reducer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention are described clearly and completely below, and it is obvious that the described embodiments are some, not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "first inlet", "second inlet", "first outlet", and "second outlet" are used to define the components, and are used only for the convenience of distinguishing the components, and if not otherwise stated, the terms have no special meaning, and thus, should not be construed as limiting the scope of the present invention.
As shown in fig. 1, the present invention relates to a system for recycling water discharged by injecting steam into thick oil on the sea, comprising:
the first outlet of the steam injection boiler 1 is connected with the wellhead of the offshore oil well and used for outputting steam to the offshore oil well;
the inlet of the drainage expansion device 2 is connected with the second outlet of the steam injection boiler 1 and is used for collecting the steam which does not reach the standard or is temporarily discharged;
the input end of the drainage recycling pump 3 is connected with the outlet of the drainage expansion device 2;
a first inlet of the boiler feed water treatment device 4 is connected with the feed water device, and a second inlet of the boiler feed water treatment device 4 is connected with the output end of the drainage recycling pump 3;
and the inlet of the water supply booster 5 is connected with the outlet of the boiler water supply treatment device 4, and the outlet of the water supply booster 5 is connected with the inlet of the steam injection boiler 1 and used for supplying pressurized water to the steam injection boiler 1.
In this embodiment, preferably, as shown in fig. 2, the drainage expansion device 2 includes a flash tank 8, a water tank 9 and a pressure reducer 10, an inlet of the pressure reducer 10 is connected to the second outlet of the steam injection boiler 1, an outlet of the pressure reducer 10 is connected to an inlet of the flash tank 8, an outlet of the flash tank 8 is connected to an inlet of the water tank 9, and an outlet of the water tank 9 is connected to an input end of the drainage recycling pump 3.
In this embodiment, the water tank 9 is preferably a closed water tank to prevent the recycled steam from being polluted.
In this embodiment, preferably, the inner walls of the flash tank 8 and the water tank 9 are made of high temperature resistant and corrosion resistant stainless steel, and the stainless steel can withstand high temperature up to 1000 ℃.
In this embodiment, preferably, the corrosion-resistant stainless steel mainly consists of: less than or equal to 0.02 wt% of C, less than or equal to 0.02 wt% of Si, less than or equal to 0.8 wt% of Mn, 24.5-26.0 wt% of Cr, 20.0-22.0 wt% of Ni and the balance of Fe.
In this embodiment, preferably, the corrosion resistance of the stainless steel is tested by a stainless steel 65% nitric acid corrosion test method (GB4334.3-84), and the corrosion rate is 0.037 g/(m)2·h)。
The offshore heavy oil steam injection and discharge water recycling system provided by the invention adopts a new water tank volume design method, the whole process time of boiler start, boiler shutdown and the like is not required to be considered during the water tank volume design, the volume of the water tank is effectively reduced, and compared with the conventional water tank, the volume can be reduced by more than 50%.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a marine viscous crude steam injection discharge water recycling system which characterized in that includes:
the steam injection boiler (1), wherein a first outlet of the steam injection boiler (1) is connected with a wellhead of the offshore oil well and used for outputting steam to the offshore oil well;
the inlet of the hydrophobic expansion device (2) is connected with the second outlet of the steam injection boiler (1) and is used for collecting the steam which does not reach the standard or is temporarily discharged;
the input end of the drainage recycling pump (3) is connected with the outlet of the drainage expansion device (2);
the first inlet of the boiler feed water treatment device (4) is connected with the feed water device, and the second inlet of the boiler feed water treatment device (4) is connected with the output end of the drainage recycling pump (3);
the boiler feed water treatment device comprises a feed water pressurizer (5), wherein an inlet of the feed water pressurizer (5) is connected with an outlet of the boiler feed water treatment device (4), and an outlet of the feed water pressurizer (5) is connected with an inlet of the steam injection boiler (1) and used for supplying pressurized water to the steam injection boiler (1).
2. The offshore heavy oil steam injection and discharge water recycling system according to claim 1, wherein the drainage flash tank (2) comprises a flash tank (8), a water tank (9) and a pressure reducer (10), an inlet of the pressure reducer (10) is connected with a second outlet of the steam injection boiler (1), an outlet of the pressure reducer (10) is connected with an inlet of the flash tank (8), an outlet of the flash tank (8) is connected with an inlet of the water tank (9), and an outlet of the water tank (9) is connected with an input end of the drainage recycling pump (3).
3. The offshore heavy oil steam injection and discharge water reuse system according to claim 2, wherein the water tank (9) is a closed water tank, and the recycled steam is prevented from being polluted.
4. The offshore heavy oil steam injection and discharge water reuse system according to claim 2, wherein inner walls of the flash tank (8) and the water tank (9) are corrosion-resistant stainless steel.
5. The offshore heavy oil steam injection and discharge water reuse system according to claim 4, wherein said corrosion-resistant stainless steel consists essentially of: less than or equal to 0.02 wt% of C, less than or equal to 0.02 wt% of Si, less than or equal to 0.8 wt% of Mn, 24.5-26.0 wt% of Cr, 20.0-22.0 wt% of Ni and the balance of Fe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933898.3A CN112082143A (en) | 2020-09-08 | 2020-09-08 | Offshore thickened oil steam injection and discharge water recycling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010933898.3A CN112082143A (en) | 2020-09-08 | 2020-09-08 | Offshore thickened oil steam injection and discharge water recycling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112082143A true CN112082143A (en) | 2020-12-15 |
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ID=73731557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010933898.3A Pending CN112082143A (en) | 2020-09-08 | 2020-09-08 | Offshore thickened oil steam injection and discharge water recycling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112082143A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007201125A1 (en) * | 2006-03-17 | 2007-10-04 | Downer Energy Systems Pty Ltd | A waste heat boiler (WHB) system |
| CN201155741Y (en) * | 2007-12-17 | 2008-11-26 | 辽河石油勘探局 | Thermal steam boiler low noise discharging displacement-enlarging device |
| CN201983251U (en) * | 2010-12-09 | 2011-09-21 | 哈尔滨锅炉厂有限责任公司 | Boiler starting hydrophobic expanding container |
| CN204901729U (en) * | 2015-07-20 | 2015-12-23 | 中油辽河工程有限公司 | Annotate vapour station and discharge outer emission steam recovery unit of flash vessel |
| CN205316289U (en) * | 2016-01-11 | 2016-06-15 | 中油辽河工程有限公司 | Device of making an uproar falls in emission flash vessel for steam injection boiler |
| CN107058905A (en) * | 2016-12-27 | 2017-08-18 | 振石集团东方特钢有限公司 | A kind of super austenitic stainless steel and preparation method thereof |
| CN209431391U (en) * | 2018-09-27 | 2019-09-24 | 成都市兴蓉再生能源有限公司 | A kind of boiler system with steam soot blowing waste-heat recovery device |
| CN210118730U (en) * | 2019-05-28 | 2020-02-28 | 王艳飞 | Boiler steam recovery system |
-
2020
- 2020-09-08 CN CN202010933898.3A patent/CN112082143A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2007201125A1 (en) * | 2006-03-17 | 2007-10-04 | Downer Energy Systems Pty Ltd | A waste heat boiler (WHB) system |
| CN201155741Y (en) * | 2007-12-17 | 2008-11-26 | 辽河石油勘探局 | Thermal steam boiler low noise discharging displacement-enlarging device |
| CN201983251U (en) * | 2010-12-09 | 2011-09-21 | 哈尔滨锅炉厂有限责任公司 | Boiler starting hydrophobic expanding container |
| CN204901729U (en) * | 2015-07-20 | 2015-12-23 | 中油辽河工程有限公司 | Annotate vapour station and discharge outer emission steam recovery unit of flash vessel |
| CN205316289U (en) * | 2016-01-11 | 2016-06-15 | 中油辽河工程有限公司 | Device of making an uproar falls in emission flash vessel for steam injection boiler |
| CN107058905A (en) * | 2016-12-27 | 2017-08-18 | 振石集团东方特钢有限公司 | A kind of super austenitic stainless steel and preparation method thereof |
| CN209431391U (en) * | 2018-09-27 | 2019-09-24 | 成都市兴蓉再生能源有限公司 | A kind of boiler system with steam soot blowing waste-heat recovery device |
| CN210118730U (en) * | 2019-05-28 | 2020-02-28 | 王艳飞 | Boiler steam recovery system |
Non-Patent Citations (1)
| Title |
|---|
| 徐修炎等: "《钢铁件热加工技术及质量控制》", 31 December 1986, 成都：四川科学技术出版社 * |
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Application publication date: 20201215 |