CN1260139C - Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation - Google Patents
Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation Download PDFInfo
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- CN1260139C CN1260139C CN 02111402 CN02111402A CN1260139C CN 1260139 C CN1260139 C CN 1260139C CN 02111402 CN02111402 CN 02111402 CN 02111402 A CN02111402 A CN 02111402A CN 1260139 C CN1260139 C CN 1260139C
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Abstract
The present invention relates to a method for deeper treatment and reuse of oil extraction waste water in an oil field, which utilizes a membrane separation technique. The present invention overcomes the problems that the quality of water treated by the existing water-oil separating technology is difficult to achieve the requirement of oil extraction reinjection water, particularly the high requirement of preparing a polymer flooding agent, water resources are waste, and the environment is polluted. The method comprises that a separation system of microfiltration or ultrafiltration is adopted to remove suspended substance, CODcr, oil and polymers in the oil extraction waste water; the discharged water which is processed is processed by nano-filter or reverse osmosis for removing degree of mineralization and micromolecular oil in the water; finally, the water quality achieves the requirements of the oil extraction reinjection water and the polymer flooding agent. The present invention is mainly used for processing and reusing the oil extraction waste water in the oil field.
Description
Technical field
The present invention relates to a kind of oil production waste water in oil field advanced treatment and cyclic utilization method, particularly a kind of membrane separation process that utilizes carries out oil production waste water in oil field advanced treatment and cyclic utilization method.
Background technology
In the oil production process, oil extraction liquid contains a large amount of water, and water ratio is minimum to be 45%, is up to 98%, can produce a large amount of waste water after the oily water separation, mainly contain in the waste water: a large amount of suspended substances, total suspended solid are every liter of 50-200 milligram, and CODcr is every liter of a 150-400 milligram, salinity is every liter of a 3000-5000 milligram, total oil is every liter of 10-100 milligram, and direct discharging of waste water is not only wasted precious water resource, and severe contamination and destruction periphery ecotope.Existing oily water separation technology mainly adopts traditional gravity separation method, and the water after the processing is difficult to reach oil recovery re-injection water to requirements in water quality, and particularly the prepared polymer oil-displacing agent is to the high standard requirement of water quality.Re-injection water water quality inferiority has a strong impact on the stabilizing and increasing of output of oil production.
Summary of the invention
The purpose of this invention is to provide a kind of membrane separation technique of utilizing and carry out oil production waste water in oil field advanced treatment and cyclic utilization method, poor in order to solve the oil-water separation that exists in the prior art, be difficult to suspended substance, organic pollutant, salinity, oil, polymkeric substance in the degree of depth removal waste water, water after the processing does not reach oil recovery re-injection water to requirements in water quality, particularly the prepared polymer oil-displacing agent is to the high standard requirement of water quality, cause water resource waste, serious pollution of ecological environment.
The object of the present invention is achieved like this: utilize membrane separation technique to carry out oil production waste water in oil field advanced treatment and cyclic utilization method and comprise and adopt the film separating system of micro-filtration or ultrafiltration that the suspended substance in the oil extraction waste water, CODcr, oil, polymkeric substance are removed, water outlet after the processing is again through salinity and micromolecular oil in nanofiltration or the reverse osmosis removal water, final outflow water water quality reaches: turbidity is less than 0.01, CODcr is less than 60 milligrams every liter, total oil is less than 5 milligrams every liter, and total mineralization is less than 500 milligrams every liter.The micro-filtration that adopts or the film separating system of ultrafiltration are: 0.01～1 micron of pore size filter, the working pressure of employing are the 0.2-1.5 MPa, and service temperature is 10～90 degrees centigrade, and material is the organic or inorganic material; The nanofiltration of adopting or the film separating system of reverse osmosis are: working pressure is the 0.5-4.0 MPa, and service temperature is 5～70 degrees centigrade, and material is an organic material;
The application film separating system carries out the oil production waste water in oil field advanced treatment and recycle has following advantage:
A. solve the water that adopts after the existing oily water separation art breading and can not reach the requirement of oil recovery re-injection water, particularly the prepared polymer oil-displacing agent is to the problem of the high standard requirement of water quality, and treat effluent reaches polymer flooding oil removing configuration solution with water water quality standard fully.
B. realize oil production waste water in oil field advanced treatment and recycle, can save great lot of water resources, improve oil production rate, reduce discharge of wastewater, preserve the ecological environment, reduce production costs, economic benefit is very remarkable, and has good social benefit.
C. be used for the film separating system of oil production waste water in oil field advanced treatment and recycle, flow process is simple and direct, and energy consumption is little, and running cost is low, can realize in the short period of time that risk capital reclaims.
Embodiment
Below in conjunction with embodiment, the present invention is described in detail.
Embodiment 1
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 45 degrees centigrade of working pressure 0.4 MPas, service temperature, carries out the micro-filtration operation; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up nanofiltration membrane separation system; Nanofiltration operating system is carried out the nanofiltration operation under 40 degrees centigrade of working pressure 1.5 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 2
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 50 degrees centigrade of working pressure 1.5 MPas, service temperature, carries out the micro-filtration operation; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up nanofiltration membrane separation system; Nanofiltration operating system is carried out the nanofiltration operation under 35 degrees centigrade of working pressure 2.0 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 3
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 40 degrees centigrade of working pressure 0.5 MPas, service temperature, carries out the micro-filtration operation; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up nanofiltration membrane separation system; Nanofiltration operating system is carried out the nanofiltration operation under 30 degrees centigrade of working pressure 3.0 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 4
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 90 degrees centigrade of working pressure 0.2 MPas, service temperature, carries out the micro-filtration operation; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up nanofiltration membrane separation system; Nanofiltration operating system is carried out the nanofiltration operation under 70 degrees centigrade of working pressure 0.5 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 5
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 10 degrees centigrade of working pressure 1.5 MPas, service temperature, carries out the micro-filtration operation; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up nanofiltration membrane separation system; Nanofiltration operating system is carried out the nanofiltration operation under 5 degrees centigrade of working pressure 4.0 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 6
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 45 degrees centigrade of working pressure 0.4 MPas, service temperature, carries out ultrafiltration; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up reverse osmosis membrane separation system; Reverse osmosis operating system is carried out the reverse osmosis operation under 40 degrees centigrade of working pressure 1.5 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 7
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 50 degrees centigrade of working pressure 1.5 MPas, service temperature, carries out ultrafiltration; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up reverse osmosis membrane separation system; Reverse osmosis operating system is carried out the reverse osmosis operation under 35 degrees centigrade of working pressure 2.0 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 8
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 40 degrees centigrade of working pressure 0.5 MPas, service temperature, carries out ultrafiltration; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up reverse osmosis membrane separation system; Reverse osmosis operating system is carried out the reverse osmosis operation under 30 degrees centigrade of working pressure 3.0 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 9
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 90 degrees centigrade of working pressure 0.2 MPas, service temperature, carries out ultrafiltration; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up reverse osmosis membrane separation system; Reverse osmosis operating system is carried out the reverse osmosis operation under 70 degrees centigrade of working pressure 0.5 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Embodiment 10
Accurately the metering oil production waste water in oil field adds in the batch can for 200 liters, under 10 degrees centigrade of working pressure 1.5 MPas, service temperature, carries out ultrafiltration; Concentrated solution is collected the back and is carried back joint station to carry out petroleum recovery, and filtrate enters follow-up reverse osmosis membrane separation system; Reverse osmosis operating system is carried out the reverse osmosis operation under 5 degrees centigrade of working pressure 4.0 MPas, service temperature; Filtrate is delivered to pressurizing point and uses as re-injection water or polymkeric substance configuration water conservancy.
Claims (2)
1. one kind is utilized membrane separation technique to carry out oil production waste water in oil field advanced treatment and cyclic utilization method, comprise each operation of micro-filtration or ultrafiltration, nanofiltration or reverse osmosis, it is characterized in that: wherein utilize the film separating system of micro-filtration or ultrafiltration that the suspended substance in the oil extraction waste water, CODcr, oil, polymkeric substance are removed, the water outlet after the processing is again through salinity and micromolecular oil in nanofiltration or the reverse osmosis membrane removal water; The pore size filter of the micro-filtration that adopts or the film separating system of ultrafiltration is 0.01～1 micron, and working pressure is the 0.2-1.5 MPa, and service temperature is 10～90 degrees centigrade; The working pressure of the nanofiltration of adopting or the film separating system of reverse osmosis is the 0.5-4.0 MPa, and service temperature is 5～70 degrees centigrade.
2. a kind of membrane separation technique of utilizing as claimed in claim 1 is carried out oil production waste water in oil field advanced treatment and cyclic utilization method, it is characterized in that: wherein the material of the film of micro-filtration or ultrafiltration is the organic or inorganic material, and nanofiltration or reverse osmosis membrane material are organic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111402 CN1260139C (en) | 2002-04-17 | 2002-04-17 | Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02111402 CN1260139C (en) | 2002-04-17 | 2002-04-17 | Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation |
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| Publication Number | Publication Date |
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| CN1451610A CN1451610A (en) | 2003-10-29 |
| CN1260139C true CN1260139C (en) | 2006-06-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 02111402 Expired - Fee Related CN1260139C (en) | 2002-04-17 | 2002-04-17 | Method for deeper treatment and reuse of oil production waste water in oil field by membrane separation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723544B (en) * | 2008-10-24 | 2012-01-25 | 中国科学院沈阳应用生态研究所 | Advanced treatment method of heavy oil sewage |
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| CN100400432C (en) * | 2004-10-29 | 2008-07-09 | 中国石油化工股份有限公司 | Terephthalic acid production waste water disposal method |
| CN1300017C (en) * | 2005-04-14 | 2007-02-14 | 哈尔滨工业大学 | Tech. process for reducing mineralization of extracting oil sewage |
| CN1332889C (en) * | 2005-12-02 | 2007-08-22 | 郑宏 | Film precision filtering method of oil extracting sewage |
| CN100465112C (en) * | 2007-06-29 | 2009-03-04 | 天津森诺过滤技术有限公司 | Technological process of treating papermaking effluent for reuse based on membrane integrating technique |
| CN100537464C (en) * | 2007-12-13 | 2009-09-09 | 金东纸业（江苏）股份有限公司 | Method for reclaiming and utilizing paper-making industrial waste water |
| CN101367586B (en) * | 2008-09-24 | 2010-06-02 | 哈尔滨工业大学 | Desalting method for sewage water from oil production |
| CN101597108B (en) * | 2009-06-19 | 2012-01-25 | 中国海洋大学 | Method for reducing scaling between oil field oil extraction transportation system and stratum |
| CN101891320B (en) * | 2010-07-12 | 2012-05-23 | 胜利油田森诺胜利工程有限公司 | Treatment method realizing polymer-bearing produced wastewater resource utilization |
| CN102336491A (en) * | 2010-07-14 | 2012-02-01 | 北京纬纶华业环保科技股份有限公司 | Advanced treatment and recycling method for polymer-bearing oil extraction waste water |
| CN101948201A (en) * | 2010-09-11 | 2011-01-19 | 山东招金膜天有限责任公司 | Oil extraction sewage olation and recycling combined treating process |
| CN102689995A (en) * | 2012-06-01 | 2012-09-26 | 北京联众华禹环保科技有限公司 | Method for treating and recycling oil-gas field produced water |
| CN103011445A (en) * | 2012-11-02 | 2013-04-03 | 张雅婷 | Domestic swage reinjection device and method |
| CN103086446B (en) * | 2013-01-31 | 2014-03-12 | 马广肃 | Process for super-refining treatment of rejection water of low permeability oilfield and compound drive oilfield |
| CN103241805A (en) * | 2013-05-10 | 2013-08-14 | 北京中科润石油技术服务有限公司 | Nanofiltration water treatment method and system |
| CN107720991A (en) * | 2016-08-11 | 2018-02-23 | 上海凯鑫分离技术股份有限公司 | A kind of processing recovery process of viscose fiber spin finish effluent |
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2002
- 2002-04-17 CN CN 02111402 patent/CN1260139C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101723544B (en) * | 2008-10-24 | 2012-01-25 | 中国科学院沈阳应用生态研究所 | Advanced treatment method of heavy oil sewage |
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