CN102351346A - Method for treating oil field sewage - Google Patents
Method for treating oil field sewage Download PDFInfo
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- CN102351346A CN102351346A CN2011102535962A CN201110253596A CN102351346A CN 102351346 A CN102351346 A CN 102351346A CN 2011102535962 A CN2011102535962 A CN 2011102535962A CN 201110253596 A CN201110253596 A CN 201110253596A CN 102351346 A CN102351346 A CN 102351346A
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- Prior art keywords
- oil
- water
- oil field
- field sewage
- sewage
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention relates to a method for treating oil field sewage. The method comprises the following steps of: adding 50 to 150mg of composite modifier into each liter of oil field sewage, and fully mixing for 1 to 10 minutes; adding 30 to 125mg of water purification agent into each liter of oil field sewage, and fully mixing for 1 to 10 minutes; and finally adding 1 to 3mg of flocculating agent into each liter of oil field sewage, and fully mixing for 1 to 20 minutes. Due to the adoption of multiple kinds of applied force among micro-particles, impurities in the oil field sewage are flocculated into large flocculent body particles, and the large flocculent body particles are quickly settled and discharged out of a sewage discharging outlet. Water treated by the method has the quality which meets the requirement of the quality of water injected into an oil deposit and has high compatibility, so that heavy pollution to a stratum is reduced, the energy of the stratum is balanced, and a large number of water sources are saved; and the method has profound social value.
Description
Technical field
The present invention relates to a kind of method of sewage disposal, particularly related to a kind of method of disposing polluted water in oil.
Background technology
Also contain a large amount of suspended solidss and Cl in the oilfield sewage
-, S
2-, SO
4 2-, HCO
-, Na
+, Ca
2+, Mg
2+, K
+Etc. inorganic yin, yang ion.Make oil field waste have the salinity height, give birth to characteristics such as incrustation ion is many, complicated component, the suspended substance in the waste water is again two important factors that cause water injection well and oil layer blocking in the oil extraction waste water re-injection with oil, exists characteristics such as difficult treatment up to standard.This has also been carried out a large amount of research both at home and abroad, common treatment process has air supporting method, physisorphtion, chemical coagulation process, electrolytic process, membrane separation process, biochemical process etc.These methods respectively have its relative merits technically and economically, because the water quality and the water yield of each oil field waste are inequality, seem particularly important so find out the treatment process that is fit to most of oil field waste targetedly.The producer of domestic flocculation agent and coagulant aids is a lot, and oilfield sewage is high because of salinity, and the product of flocculation needs composite and the adaptable flocculation agent of screening than the more difficult sedimentation of the flocs unit in other oil fields.This technology of my company is in the water of high salinity; According to different salinities, oleaginousness, suspension content; Utilize the ion in the water; And composite corresponding flocculation agent and coagulant aids and adjustment agent; Make suspended substance and oil-containing ability in the water complete; And sedimentation is rapidly removed at short notice, reaches the effect that purifies water.
Summary of the invention
The application's goal of the invention is aimed at oil-field flooding water quality, because oil field water quality is complicated, has high salinity; The characteristics of high stability; Intractability is very big, and general flocculation agent is very undesirable to water treatment effect, and the method for a kind of disposing polluted water in oil that provides.
The method of a kind of disposing polluted water in oil of the present invention, wherein: it may further comprise the steps:
(1) the compound adjustment agent of adding 50-150mg/l earlier in oilfield sewage, thorough mixing 1-10 minute then;
(2) add the water purification agent of 30-125mg/l again, thorough mixing 1-10 minute then;
(3) add the flocculation agent of 1-3mg/l at last, thorough mixing 1-20 minute then, utilize multiple action power between micropartical, the impurity in the oilfield sewage is flocculated into the macrobead flock, and rapid subsidence, discharge through sewage draining exit;
The method of a kind of disposing polluted water in oil of the present invention, wherein: said compound adjustment agent is a sodium hydroxide;
The method of a kind of disposing polluted water in oil of the present invention, wherein: said water purification agent is meticulous polymeric aluminum, the effective content of polymeric aluminum is greater than 29% in the wherein meticulous polymeric aluminum;
The method of a kind of disposing polluted water in oil of the present invention, wherein: said flocculation agent is a polyacrylamide;
The method of a kind of disposing polluted water in oil of the present invention, wherein: said polyacrylamide is a cationic polyacrylamide, and its molecular weight is between 800-12000.
The method of a kind of disposing polluted water in oil of the present invention is compared with existing process for treating oil field sewage and is had the following advantages:
1, applied widely.
2, proportioning is simple, and is easy to operate.
3, adding less, economical and practical.
4, be swift in response, the settling time is short
5, handle back water quality mechanical impurity≤2mg/l, transmittance>=95%, oil-containing≤10mg/l reach industry injection water quality standard.
Water quality with after the method processing of the present invention meets reservoir water water quality, and compatibleness is good, has reduced the degree of depth on stratum and has polluted, and the balance producing energy has been practiced thrift great lot of water resources, has far-reaching social value.
Embodiment
The method of disposing polluted water in oil of the present invention, it may further comprise the steps:
(1) the compound adjustment agent that in oilfield sewage, adds earlier 50-150mg/l was like sodium hydroxide, thorough mixing 1-10 minute then;
(2) water purification agent that adds 30-125mg/l again is like meticulous polymeric aluminum, and thorough mixing 1-10 minute then, the effective content of polymeric aluminum was greater than 29% in the wherein meticulous polymeric aluminum;
(3) flocculation agent that adds 1-3mg/l at last is like the cationic polyacrylamide of molecular weight between 800-12000; Thorough mixing 1-20 minute then, utilize multiple action power between micropartical, the impurity in the oilfield sewage is flocculated into the macrobead flock; And rapid subsidence, discharge through sewage draining exit.
Above embodiment describes preferred implementation of the present invention; Be not that scope of the present invention is limited; Design under the prerequisite of spirit not breaking away from the present invention; Various distortion and improvement that the common engineering technical personnel in this area make technical scheme of the present invention all should fall in the definite protection domain of claims of the present invention.
Claims (5)
1. the method for a disposing polluted water in oil, it is characterized in that: it may further comprise the steps:
(1) the compound adjustment agent of adding 50-150mg/l earlier in oilfield sewage, thorough mixing 1-10 minute then;
(2) add the water purification agent of 30-125mg/l again, thorough mixing 1-10 minute then;
(3) add the flocculation agent of 1-3mg/l at last, thorough mixing 1-20 minute then, utilize multiple action power between micropartical, the impurity in the oilfield sewage is flocculated into the macrobead flock, and rapid subsidence, discharge through sewage draining exit.
2. the method for disposing polluted water in oil as claimed in claim 1, it is characterized in that: said compound adjustment agent is a sodium hydroxide.
3. the method for disposing polluted water in oil as claimed in claim 2, it is characterized in that: said water purification agent is meticulous polymeric aluminum, the effective content of polymeric aluminum is greater than 29% in the wherein meticulous polymeric aluminum.
4. the method for disposing polluted water in oil as claimed in claim 3, it is characterized in that: said flocculation agent is a polyacrylamide.
5. like the method for the described disposing polluted water in oil of arbitrary claim in the claim 1 to 4, it is characterized in that: said polyacrylamide is a cationic polyacrylamide, and its molecular weight is between 800-12000.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102535962A CN102351346A (en) | 2011-08-30 | 2011-08-30 | Method for treating oil field sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102535962A CN102351346A (en) | 2011-08-30 | 2011-08-30 | Method for treating oil field sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102351346A true CN102351346A (en) | 2012-02-15 |
Family
ID=45575028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102535962A Pending CN102351346A (en) | 2011-08-30 | 2011-08-30 | Method for treating oil field sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102351346A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628108A (en) * | 2015-02-09 | 2015-05-20 | 西安华诺石油技术开发有限公司 | Preparation method for high-efficient specialized flocculant |
| CN110015774A (en) * | 2018-01-09 | 2019-07-16 | 中国石油天然气股份有限公司 | A kind of petrochemical wastewater immediate processing method |
| CN115196777A (en) * | 2021-04-13 | 2022-10-18 | 中国石油天然气股份有限公司 | Oil field sewage treatment method and treatment system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088937A (en) * | 2007-06-28 | 2007-12-19 | 北京海恩润德化工科学技术有限公司 | Process of treating ternary combination flooding sewage |
| CN101786739A (en) * | 2010-02-08 | 2010-07-28 | 西安石油大学 | Oil extraction wastewater treatment method used for oilfield reinjection |
-
2011
- 2011-08-30 CN CN2011102535962A patent/CN102351346A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101088937A (en) * | 2007-06-28 | 2007-12-19 | 北京海恩润德化工科学技术有限公司 | Process of treating ternary combination flooding sewage |
| CN101786739A (en) * | 2010-02-08 | 2010-07-28 | 西安石油大学 | Oil extraction wastewater treatment method used for oilfield reinjection |
Non-Patent Citations (1)
| Title |
|---|
| 崔杰等: "含油废水处理新工艺", 《河南化工》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104628108A (en) * | 2015-02-09 | 2015-05-20 | 西安华诺石油技术开发有限公司 | Preparation method for high-efficient specialized flocculant |
| CN110015774A (en) * | 2018-01-09 | 2019-07-16 | 中国石油天然气股份有限公司 | A kind of petrochemical wastewater immediate processing method |
| CN115196777A (en) * | 2021-04-13 | 2022-10-18 | 中国石油天然气股份有限公司 | Oil field sewage treatment method and treatment system |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 100192, No. 8 clear road, Haidian District, Beijing (Fortune 1106 B, 1106A) Applicant after: BEIJING ENRUIDA TECHNOLOGY CO., LTD. Address before: 100192, No. 8 clear road, Haidian District, Beijing (Fortune 1106 B, 1106A) Applicant before: Beijing Enruida Technology Co., Ltd. |
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| COR | Change of bibliographic data | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120215 |