CN207713511U - A kind of production separator for offshore gas field platform production water process - Google Patents
A kind of production separator for offshore gas field platform production water process Download PDFInfo
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- CN207713511U CN207713511U CN201720975188.0U CN201720975188U CN207713511U CN 207713511 U CN207713511 U CN 207713511U CN 201720975188 U CN201720975188 U CN 201720975188U CN 207713511 U CN207713511 U CN 207713511U
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Abstract
The utility model is related to a kind of production separators producing water process for offshore gas field platform to add coalescence internals between rectifier and adjustable oil isolated from water weir plate in existing production separator；The coalescence internals are made of metallic framework fiber；The vertical height for coalescing internals is identical as the adjustable maximum height of oil isolated from water weir plate, coalescence internals depth is 200~500mm, volumetric surface area is 15000~25000m2/m3, voidage 0.68~0.75, pressure drop be less than 40psi.The separation method of the production separator in production separator by installing coalescence internals, to reduce the oil content in production water and improve the particle size distribution range of emulsified oil droplet；The coalescence internals can be adjusted the particle diameter distribution for producing emulsified oil droplet in water in the precision that hydrocyclone can detach, and improved the separative efficiency of hydrocyclone, avoided the investment of newly added equipment and workflow reengineering, save platform space.
Description
Technical field
The utility model is related to a kind of remodeling method of sewage waste-oil scavenger and realize this method needed for production separator,
The field of environment protection for belonging to oils sewage disposal is particularly suitable for the oil removal treatment that offshore oil production, gas production platform arrange production water outside.
Background technology
Offshore gas field underground production is the Oil, Water, Gas three-phase mixture of high temperature and pressure, and production is first dropped through heat exchanger
Temperature, then through production separator by Oil, Water, Gas three phase separation；Oil after separation is gentle be further processed after outer defeated storage, separation
Production water afterwards is through oil removal treatment heel row sea.During being undergone phase transition through heat exchanger cooling serious breast can occur for production
Change, to form oil-in-water emulsion, and the major function of existing internals is liquid degassing in production separator, to grease two
The separation of phase is simple gravitational settling, because gravitational settling can not efficiently separate oil emulsion, production separator water outlet
In contain a large amount of oil emulsion.
The existing production water treatment process of offshore gas field is：Production separator, which is discharged, enters hydrocyclone, after cyclonic separation
Water outlet enter flash tank buffering heel row sea.Therefore, the separating property of hydrocyclone directly determines the oil removing effect of production water
Fruit, due to the limitation of cyclonic separation mechanism, the separation accuracy of hydrocyclone is 10um or more, to the emulsified oil droplet less than 10um
Almost without centrifugation.
After entering mid-term with gas-field exploitation, down-hole pressure reduction, production and production operation pressure reduction, gas phase stream
Amount increases, and emulsification is more serious caused by heat exchange phase transformation and pipeline transmission process, produces oil droplet size distribution in water and becomes smaller,
There is the oil droplet that a large amount of grain sizes are less than 10um, have exceeded the separating capacity of prior art and equipment, to the row's of causing sea production water
Oil content severely exceeds.
Utility model content
For the deficiency of existing equipment, the utility model uses depth coalescence technology, provides a kind of production water process and sets
Standby upgrading method and required production separator, to achieve the purpose that the depth oil removing to producing water and qualified discharge.
The technical concept of method part is in the utility model：It keeps original production water treatment process and equipment constant, passes through
The installation coalescence internals in production separator, to reduce the oil content of production water, and the grain size point that emulsified oil droplet in water will be produced
Cloth is promoted in the precision efficiently separated that hydrocyclone can detach, and which also improves the separation of hydrocyclone effects
Production separator is discharged oil content stability contorting within 30mg/L by rate.
Specific technical solution is as follows：
A kind of production separator for offshore gas field platform production water process, in existing production separator, in rectification
Coalescence internals are added between device and adjustable oil isolated from water weir plate, production water flows through emulsified oil droplet coalescence length during coalescence internals
Greatly, fall off separation, to reduce the oil content in production separator water outlet and increase the particle diameter distribution of oil droplet so that production point
Contained oil droplet is discharged from device to be efficiently separated by downstream hydrocyclone.
Preferably, the vertical height of the coalescence internals is identical as the adjustable maximum height of oil isolated from water weir plate, in coalescence
Part depth is 200~500mm, volumetric surface area is 15000~25000m2/m3, voidage 0.68~0.75, pressure drop be less than
40psi。
Preferably, material used in the metallic framework fiber of the coalescence internals, when producing, chloride ion content in water is low
When 1000mg/L, 316L or 904L fibers can be used in coalescence mould fibrous skeleton material in the block, contain when producing chlorion in water
When oil is higher than 2000mg/L, coalescence mould fibrous skeleton material in the block should be titanium alloy fiber.
The utility model it is a kind of for offshore gas field platform production water process production separator separation method, using
The production separator of coalescence internals is added between rectifier and adjustable oil isolated from water weir plate, the coalescence internals are to oil content 500
The production water that~5000mg/L, oil droplet size are distributed 3~60um has at least 90% to be directly separated efficiency, and can be by oil droplet grain
Diameter distribution is promoted to 30~100um.
Preferably, the operating pressure of the production separator is lower, production water oil content is higher and emulsification is more serious.
Preferably, the hydrocyclone must be able to work normally, the separative efficiency of 15um or more oil droplets is not less than
95%.
The beneficial effects of the utility model are：By increasing coalescence internals in existing equipment, reduce into waterpower
The oil content of the production water of cyclone simultaneously improves oil droplet size distribution, should to improve the separative efficiency of hydrocyclone
Method reduces the investment of newly added equipment and technological transformation, saves platform space.
Description of the drawings
Fig. 1 is the production water treatment technological process schematic diagram of embodiment 1；
Fig. 2 is the structural schematic diagram of the production separator 11 of embodiment 1.
Symbol description：
11 be production separator；12 be production water booster pump；13 be hydrocyclone；14 be production water flash tank；15 are
Condensate coalescer；16 be condensate flash tank；17 be recycling oil tank；18 be recycling oil transfer pump；21 degassing core pipes；22 rectifications
Device；23 manholes；24 coalescence internals；25 adjustable oil isolated from water weir plates；26 demisters；27 cleaning mouths.
Specific implementation mode
The utility model is described further with reference to the accompanying drawings and examples.
Embodiment 1
In the production water treatment technology of certain offshore gas field platform, the processing equipment upgrading side of the utility model is used
Method and coalescence internals, refering to fig. 1, the operating status of the technique is production water treatment technological process schematic diagram before transformation：Processing
Measure 15m3/h；It produces and is free of solid particle, chloride ion content 2000mg/L in water；Production separator operating pressure 150psi is raw
Produce separator outlet oil content 3000mg/L, 1~15um of oil droplet size distribution；SEPARATION EFFICIENCY IN HYDROCYCLONE about 50~
60%, it is more than 1000mg/L to arrange sea production water oil content.
Scheme Choice：The installation coalescence internals 24 between rectifier 22 and adjustable oil isolated from water weir plate 25, apparatus structure shows
It is intended to refering to Fig. 2；The height for coalescing internals 24 is 0.86m, identical as the adjustable maximum height of oil isolated from water weir plate；Coalesce internals
24 depth are 400mm, volumetric surface area 20000m2/m3, voidage 0.71, metallic framework fiber be titanium alloy.
Using the improved testing results effect such as following table of the utility model method and device
Interpretation of result：Waste-oil scavenger after engineered is arranged in sea production water within oil content energy steady decrease to 30mg/L,
It ensure that production water qualified discharge, it was demonstrated that the scrap build method and coalescence internals have good application effect.
It is only the preferred embodiment of the utility model in summary, not is used for limiting the implementation model of the utility model
It encloses；Read the utility model it is above-mentioned tell about content after, what those skilled in the art can make the utility model
Some nonessential modifications and adaptations, still fall within the scope of protection of the utility model.
Claims (2)
1. a kind of production separator for offshore gas field platform production water process, which is characterized in that in existing production separator
It is interior, have additional coalescence internals between rectifier and adjustable oil isolated from water weir plate；
The coalescence internals are made of metallic framework fiber；
The vertical height for coalescing internals is identical as the adjustable maximum height of oil isolated from water weir plate, coalescence internals depth is 200
~500mm, volumetric surface area are 15000~25000m2/m3, voidage 0.68~0.75, pressure drop be less than 40psi.
2. a kind of production separator for offshore gas field platform production water process according to claim 1, feature exist
In, material used in the metallic framework fiber of the coalescence internals, when produce in water chloride ion content less than 1000mg/L,
Fibrous skeleton material uses 316L or 904L fibers；When producing in water chlorion oil-containing and being higher than 2000mg/L, fibrous skeleton material
Matter is titanium alloy fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720975188.0U CN207713511U (en) | 2017-08-04 | 2017-08-04 | A kind of production separator for offshore gas field platform production water process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720975188.0U CN207713511U (en) | 2017-08-04 | 2017-08-04 | A kind of production separator for offshore gas field platform production water process |
Publications (1)
| Publication Number | Publication Date |
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| CN207713511U true CN207713511U (en) | 2018-08-10 |
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| CN201720975188.0U Active CN207713511U (en) | 2017-08-04 | 2017-08-04 | A kind of production separator for offshore gas field platform production water process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381851A (en) * | 2017-08-04 | 2017-11-24 | 上海米素环保科技有限公司 | A kind of production separator and its separation method for offshore gas field platform production water process |
| CN109502786A (en) * | 2018-11-30 | 2019-03-22 | 中石化石油工程技术服务有限公司 | Oils sewage disposal system |
-
2017
- 2017-08-04 CN CN201720975188.0U patent/CN207713511U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107381851A (en) * | 2017-08-04 | 2017-11-24 | 上海米素环保科技有限公司 | A kind of production separator and its separation method for offshore gas field platform production water process |
| CN109502786A (en) * | 2018-11-30 | 2019-03-22 | 中石化石油工程技术服务有限公司 | Oils sewage disposal system |
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