CN204737813U - Offshore oil field production water processing system - Google Patents

Offshore oil field production water processing system Download PDF

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Publication number
CN204737813U
CN204737813U CN201520337750.8U CN201520337750U CN204737813U CN 204737813 U CN204737813 U CN 204737813U CN 201520337750 U CN201520337750 U CN 201520337750U CN 204737813 U CN204737813 U CN 204737813U
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CN
China
Prior art keywords
water
oil
oil field
obstruction
separator
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.)
Expired - Fee Related
Application number
CN201520337750.8U
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Chinese (zh)
Inventor
王胜
谭家翔
姜勇
石烜
张喦
陈卫江
王新乐
邢哲
唐昊
陆涛
陈晓峰
霍志坚
刘怀增
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cnooc Energy Technology & Services-Safety And Environmental Protection Co
CNOOC Energy Technology and Services Ltd
Original Assignee
Cnooc Energy Technology & Services-Safety And Environmental Protection Co
CNOOC Energy Technology and Services Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Cnooc Energy Technology & Services-Safety And Environmental Protection Co, CNOOC Energy Technology and Services Ltd filed Critical Cnooc Energy Technology & Services-Safety And Environmental Protection Co
Priority to CN201520337750.8U priority Critical patent/CN204737813U/en
Application granted granted Critical
Publication of CN204737813U publication Critical patent/CN204737813U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an offshore oil field production water processing system, including three -phase separator, hydraulic cyclone, air supporting device and accumulator tank, three -phase separator's water inlet is connected with oil field production water conveyer pipe, three -phase separator's delivery port has connected gradually hydraulic cyclone, air supporting device, obstruction membrane separation unit, security personnel's secondary filter, has produced the water buffer tank and recycle the water pump, stop the membrane separation unit and form by at least two obstruction membrane water oil separating machine parallel connection, stop membrane water oil separating machine, three -phase separator and air supporting device for every and still be connected with the accumulator tank through returning oil collecting pipe. The warp the utility model discloses quality of water after the system handles reaches the air permeability > 0.05 mu m2 stratum recycles the standard requirement of water, and can regard as the oil field to recycle water and use to solve the processing problem of oil field production water, avoided the destruction to marine environment, had effectual, the compact structure of deoiling, saving cost, easy operation, advantage such as efficient.

Description

A kind of offshore oilfield try production
Technical field
The utility model relates to water treatment field, in particular, relates to a kind of offshore oilfield try production.
Background technology
Offshore oilfield is produced water and is mainly referred to the oily(waste)water separated from crude oil, and wherein containing a large amount of hydrocarbons and suspended solid, direct discharge can do great damage to ocean environment.Traditional oil produced water processing mode is marine by entering after up to standard for field produces water treatment, and enter into the middle and later periods along with exploitation, oil field needs a large amount of injection water to improve crude oil recovery ratio, increasing production vessel is selected production water treatment to reach and is injected reinjection into reservoir after water quality standard, this treatment process both can meet production vessel to the demand injecting water, the sewage of generation can be made full use of again, to guarantee oil field Sustainable Exploitation and to alleviate environmental pollution significant.
Due to each oil field or region reservoir pore structure different with throat diameter, corresponding rate of permeation is not identical yet, is therefore not quite similar to the water quality requirement of reinjected water yet.And the exploitation of offshore oilfield has in recent years entered the development of low-permeability oil reservoir stage, and it can be main development object quite over a long time from now on.To air permeability > 0.05 μm in oil and gas industry standard " petroclastic rock reservoir water water-quality guideline and analytical procedure " SY/T5329-2012 2stratum reinjection standard requires: oleaginousness≤15mg/L, suspended solids content≤5mg/L, suspended substance median particle size≤3 μm.The traditional processing mode of the many employings of water produced by current production vessel, only can reach more than oleaginousness 20mg/L in water, suspended solids content 6 ~ 8mg/L, can not meet air permeability > 0.05 μm after process 2the water quality standard of stratum reinjected water.
Utility model content
The purpose of this utility model is to overcome deficiency of the prior art, and provide a kind of offshore oilfield try production efficiently, after treatment, water quality reaches air permeability > 0.05 μm 2the standard-required of stratum reinjected water, can be used as oil field reinjection water and uses, thus solve the handling problems of oil produced water, avoid the destruction to ocean environment, has that deoiling effect is good, compact construction, cost-saving, easy to operate, efficiency advantages of higher.
The purpose of this utility model is achieved through the following technical solutions:
A kind of offshore oilfield try production, comprise triphase separator, hydrocyclone, air-floating apparatus and gathering tank, the water-in of triphase separator is connected with oil produced water transfer lime, the water outlet of described triphase separator is connected with hydrocyclone in turn, air-floating apparatus, stop membrane sepn unit, security personnel's secondary filter, produce water surge tank and re-injection water pump, described obstruction membrane sepn unit is connected in parallel by least two obstruction film oil-water separators and forms, every platform stops film oil-water separator, triphase separator and air-floating apparatus are also connected with gathering tank by reclaiming oil pipe.
A wherein obstruction film oil-water separator in described obstruction membrane sepn unit regularly stops film oil-water separators for other provides backwashing water, and backwashing water outlet is connected with production water transfer lime by backwash water reflux pump.
The top of described triphase separator is provided with venting port, and bottom is provided with oil discharge outlet and water port.
Compared with prior art, the beneficial effect that the technical solution of the utility model is brought is:
1. the utility model is optimized traditional offshore oilfield production water treatment device, add on the original basis and stop membrane sepn unit, security personnel's secondary filter and produce water surge tank, obstruction membrane sepn unit is connected in parallel by least two obstruction film oil-water separators and forms, every platform is stopped film oil-water separator and is also connected with gathering tank by reclaiming oil pipe, improve deoiling effect on the whole, water outlet oleaginousness≤5mg/L can be ensured, suspended solids content≤3mg/L, suspended substance median particle size≤2 μm, meet air permeability > 0.05 μm 2stratum reinjected water standard-required.
2. avoid the use of a large amount of medicament in native system treating processes, save cost of disposal, the oil after process and water can be recycled respectively, alleviate secondary pollution, and achieve the resource utilization recycling of oil produced water, improve the economic benefit in oil field.
3. compact, easy to operate, the strong shock resistance of the utility model overall system architecture, can meet the actual demand of offshore platform.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Reference numeral: 1-produces water transfer lime 2-triphase separator 3-venting port 4-hydrocyclone 5-air-floating apparatus 6-and stops membrane sepn unit 7-security personnel secondary filter 8-product water surge tank 9-re-injection water pump 10-reinjected water 11-gathering tank 12-recovery oil pipe 13-backwash water reflux pump
Embodiment
Below in conjunction with accompanying drawing, the utility model will be further described.
As shown in Figure 1: a kind of offshore oilfield try production, comprise triphase separator 2 and gathering tank 11, the water-in of triphase separator 2 is connected with oil produced water transfer lime 1, the oil discharge outlet of triphase separator 2 is connected with gathering tank 11 by reclaiming oil pipe 12, in addition the top of triphase separator 2 is provided with venting port 3, and bottom is provided with water port; The water port of triphase separator 2 is connected with hydrocyclone 4, air-floating apparatus 5, obstruction membrane sepn unit 6, security personnel's secondary filter 7 in turn, produces water surge tank 8 and re-injection water pump 9, finally discharges reinjected water 10 through re-injection water pump 9; Described obstruction membrane sepn unit 6 is connected in parallel by least two obstruction film oil-water separators and forms, and the top that every platform stops film oil-water separator is connected with gathering tank 11 by reclaiming oil pipe 12 with air-floating apparatus 5.
A wherein obstruction film oil-water separator of stopping in membrane sepn unit 6 regularly stops film oil-water separators for other provides backwashing water, this backwashing water import is arranged on stops between membrane sepn unit 6 and security personnel's secondary filter 7, and backwashing water outlet is connected with production water transfer lime 1 by backwash water reflux pump 13.
Working process of the present utility model is as follows: offshore oilfield produces water first successively by triphase separator 2, hydrocyclone 4 and air-floating apparatus 5, reach and remove oil slick in water, the effect of gas and the larger suspended solids of particle, then enter and stop film oily water separation unit 6, oily water separation is realized by stopping filtration, wherein stop film water-and-oil separator and adopt cross-flow operation scheme, eliminate suspended particle to the impact of stopping film, when stopping film paranormal operting differential pressure (0.5 ~ 0.7bar), with wherein one stop film oil-water separator production water and carry out back flushing, the oil of stopping gained through stopping membrane sepn unit 6 enters gathering tank 11 by reclaiming oil pipe 12, water outlet enters security personnel's secondary filter 7, product water after security personnel's secondary filter 7 filters meets reinjected water water quality requirement and enters product water surge tank 8, the backwashing water of stopping membrane sepn unit 6 carries out circular treatment by backwash water reflux pump 13 feeding production water transfer lime 1.

Claims (3)

1. an offshore oilfield try production, comprise triphase separator, hydrocyclone, air-floating apparatus and gathering tank, the water-in of triphase separator is connected with oil produced water transfer lime, it is characterized in that, the water outlet of described triphase separator is connected with hydrocyclone in turn, air-floating apparatus, stop membrane sepn unit, security personnel's secondary filter, produce water surge tank and re-injection water pump, described obstruction membrane sepn unit is connected in parallel by least two obstruction film oil-water separators and forms, every platform stops film oil-water separator, triphase separator and air-floating apparatus are also connected with gathering tank by reclaiming oil pipe.
2. a kind of offshore oilfield try production according to claim 1, it is characterized in that, a wherein obstruction film oil-water separator in described obstruction membrane sepn unit regularly stops film oil-water separators for other provides backwashing water, and backwashing water outlet is connected with production water transfer lime by backwash water reflux pump.
3. a kind of offshore oilfield try production according to claim 1, it is characterized in that, the top of described triphase separator is also provided with venting port.
CN201520337750.8U 2015-05-22 2015-05-22 Offshore oil field production water processing system Expired - Fee Related CN204737813U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520337750.8U CN204737813U (en) 2015-05-22 2015-05-22 Offshore oil field production water processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520337750.8U CN204737813U (en) 2015-05-22 2015-05-22 Offshore oil field production water processing system

Publications (1)

Publication Number Publication Date
CN204737813U true CN204737813U (en) 2015-11-04

Family

ID=54419558

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520337750.8U Expired - Fee Related CN204737813U (en) 2015-05-22 2015-05-22 Offshore oil field production water processing system

Country Status (1)

Country Link
CN (1) CN204737813U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106587437A (en) * 2016-12-27 2017-04-26 中国石油天然气股份有限公司 Movable high-efficiency oily sewage treatment process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106587437A (en) * 2016-12-27 2017-04-26 中国石油天然气股份有限公司 Movable high-efficiency oily sewage treatment process

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151104

Termination date: 20170522

CF01 Termination of patent right due to non-payment of annual fee