CN2908469Y - Treatment system for flushing waste water of oil field - Google Patents

Treatment system for flushing waste water of oil field Download PDF

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Publication number
CN2908469Y
CN2908469Y CN 200620012523 CN200620012523U CN2908469Y CN 2908469 Y CN2908469 Y CN 2908469Y CN 200620012523 CN200620012523 CN 200620012523 CN 200620012523 U CN200620012523 U CN 200620012523U CN 2908469 Y CN2908469 Y CN 2908469Y
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CN
China
Prior art keywords
water
oil
well
flushing
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 - Lifetime
Application number
CN 200620012523
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Chinese (zh)
Inventor
侯华业
阎敏
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.)
Dafeng Oil Field Tech Co Ltd Daqing
WANAOPU (BEIJING) PETROLEUM ENGINEERING TECHNOLOGY DEVELOPMENT RESEARCH INSTITUTE Co Ltd
Original Assignee
Dafeng Oil Field Tech Co Ltd Daqing
WANAOPU (BEIJING) PETROLEUM ENGINEERING TECHNOLOGY DEVELOPMENT RESEARCH INSTITUTE Co 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.)
Filing date
Publication date
Application filed by Dafeng Oil Field Tech Co Ltd Daqing, WANAOPU (BEIJING) PETROLEUM ENGINEERING TECHNOLOGY DEVELOPMENT RESEARCH INSTITUTE Co Ltd filed Critical Dafeng Oil Field Tech Co Ltd Daqing
Priority to CN 200620012523 priority Critical patent/CN2908469Y/en
Application granted granted Critical
Publication of CN2908469Y publication Critical patent/CN2908469Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model discloses a wastewater treatment system of the well washing in the oil field; the system includes a rotating and floating separator of water and oil, a filter and a well washing pump which are orderly arranged in the downstream of the rotating and floating separator of water and oil; the rotating and floating separator of water and oil and the filter are connected through the pipeline; the filter and the well washing pump are also connected through the pipeline. Because the wastewater treatment system of the well washing in the oil field of the utility model includes a rotating and floating separator of water and oil, a filter and a well washing pump which are orderly arranged in the downstream of the rotating and floating separator of water and oil, only treated orderly by the separator of water and oil and the filter can the well washing wastewater be in accordance with the requirements of the water quality; the well washing water is injected into the well through the well washing pump for the cycling washing of the well; when the system is used in the operation, the operative process is short; the equipment is simple and light; the operation is convenient; the utility model is convenient for the removal and carrying; the investment is little and the adaptability is wide.

Description

Oilfield wastewater treatment system flushing
Technical field
The utility model relates to a kind of Oilfield wastewater treatment system flushing.
Background technology
In the oil recovery process of oil field, carry out water filling, water injection well mechanical impurity etc. after water filling is after a while assembled near pit shaft and borehole, may cause the stratum water-retaining capacity to descend or the water injection pressure rising, also may cause water injection well can not carry out normal dropping-fishing test, well is adjusted operation on the serious needs.Therefore, it is the way that keeps the stratum water-retaining capacity effective and economic that water injection well is carried out well-flushing, is one of important measures that improve flood effectiveness, minimizing oil layer pollution; In washing well process, produce a large amount of well flushing waste waters, the method that oil field flushing water treatment is at present adopted usually has four kinds: the one, inject the water anti-flushing well, and instead go out sewage and discharge on the spot, according to the requirement of present oil-field flooding water quality and production management, well well-flushing half a year once, average well-flushing water yield 150m 3About/well was inferior, the profit wasting of resources was big, is main sewage pollution source, oil field; The 2nd, build independent well-flushing liquid recovery line, the shortcoming of this treatment process is the initial cost height, and utilization ratio is extremely low, and the well-flushing water yield is big, causes the fluctuation of water filling water pressure; The 3rd, take the roping of water injection well well-flushing water tank car, the mode that focuses on, shortcoming are the vehicle expense height, require road, well site condition height; The 4th, adopt the vehicular equipment on-the-spot disposal, circulation well cleanup on the spot, sewage effluent not, the equipment maneuverability, well-flushing efficient is higher.Domestic priority has how tame unit in anti-fluid processing of well-flushing and utilization process and done a large amount of intensive research and developments aspect its equipmentization, particularly since the nineties, how tame product carries out field experiment in the oil field situation has appearred, but exposing following problem on the operability: 1, a little less than the antipollution thing impact capacity, the condition of water quality scope that adapts to is little, generally works as oil-containing at 10000mgL -1When above, treatment effect is undesirable; 2, technical process is many, and complexity causes well washing apparatus skid difficulty, is not easy to carrying, and service weight is big, is up to 35 tons; 3, the processing of this extreme sewage of strainer incompatibility of traditional filter material form, filter leaching material reproduction operation amount increases, and this kind filter volume is big, is not easy to carrying.
The utility model content
The purpose of this utility model is to provide a kind of flow process to lack, equipment is simply in light weight, easy to operate, be convenient to the skid carrying, less investment, the Oilfield wastewater treatment system flushing that adaptability is extensive.
A kind of Oilfield wastewater treatment system flushing, this system comprises revolves oil slick water separator and be located at this strainer that revolves oil slick water separator downstream, well-flushing pump successively, revolve between oil slick water separator and the strainer and strainer and well-flushing pump between all be connected by pipeline.
Further, described strainer is the automatic backwash accurate filter.
Further, be provided with the buffering water pot between described strainer and the well-flushing pump.
Further, described system also comprises air dissolved pump, and the water-in of this air dissolved pump connects described buffering water pot, and water outlet is located on the described water-and-oil separator.
Revolve the oil slick water separator and be located at the strainer that this revolves oil slick water separator downstream successively because the utility model Oilfield wastewater treatment system flushing comprises, the well-flushing pump, therefore only need through water-and-oil separator with well-flushing waste water, strainer is handled successively, promptly obtain meeting the well-flushing water of water quality requirement, well-flushing water is gone in the well through the well-flushing infusion, circulation well cleanup so repeatedly, when utilizing this system operation, operating process is short, equipment is simply in light weight, easy to operate, be convenient to the skid carrying, less investment, adaptability is extensive, and because strainer is the automatic backwash accurate filter, overanxious and back flushing is carried out simultaneously, accessible water quality scope is big, oil-containing 100mgL in water -1-30000mgL -1, contain suspended solids 50mgL -1-2500mgL -1Shi Junke purifies; In addition, behind the employing air dissolved pump, guarantee that further the profit in the well-flushing waste water fully separates.After adopting native system, can make the well-flushing water recycle, more environmental protection and economy.
Description of drawings
Fig. 1 is a synoptic diagram of the present utility model.
Embodiment:
As shown in Figure 1, the utility model Oilfield wastewater treatment system flushing, comprise water-and-oil separator 1 and strainer 2, described water-and-oil separator 1 is for revolving the oil slick water separator, strainer 2 adopts the automatic backwash accurate filter, revolve the oil slick water separator 1 with the cyclone mode inflow from the effusive well-flushing waste water of water injection well, separating of oil with in the waste water in revolving the oil slick water separator, disengaging time is generally 1-2 minute, also can suitably adjust according to the water quality situation of waste water, waste water after separating of oil is entered automatic backwash accurate filter 2 through pipeline, and behind the suspended solids in this strainer 2 in the filtering waste water, oil-containing is less than 8mgL in the waste water -1, contain suspended solids less than 5mgL -1, having reached the water quality requirement of well-flushing water, the water after the above-mentioned processing flows into buffering water pot 3 bufferings through pipeline, injects wells through well-flushing pump 4 again, and so repeatedly circulation well cleanup is identical until water-in and water outlet water quality, promptly finishes well-flushing; Described strainer can filter with back flushing and carry out simultaneously, and filtering accuracy can reach 15 μ m.
For guarantee that well-flushing waste water fully separates in water-and-oil separator 1, between described buffering water pot 3 and water-and-oil separator 1, be provided with air dissolved pump 5, the water-in of air dissolved pump 5 connects buffering water pot 3, water outlet is located on the water-and-oil separator 1, water after the partially disposed in the buffering water pot 3 flows in the water-and-oil separator 1 behind air dissolved pump 5 molten gas, oil under the gas effect in well-flushing waste water come-up, usually the molten gas recirculation water introduced of air dissolved pump 5 by processing well-flushing waste water amount 20%.
To the water injection well in oil fields test in place, it the results are shown in following table by said system
Date The well head effluent quality The well head influent quality
Oil-containing mgL -1 Suspended substance mgL -1 Oil-containing mgL -1 Suspended substance mgL -1
2005、7、8 1874 925.3 7.88 4
2005、7、 17 31000.7 92 8.54 5
2005、7、 24 7653.1 167 7.26 5
2005、8、1 828.6 243 3.7 4
2005、8、7 2500 87 6.53 5
2005、8、 15 191.1 80 3.1 3
The above results shows: oil field flushing waste water is handled back water quality through native system can reach oil-containing less than 8mgL -1, contain suspended solids less than 5mgL -1

Claims (4)

1, a kind of Oilfield wastewater treatment system flushing, it is characterized in that, this system comprises revolves oil slick water separator and be located at this strainer that revolves oil slick water separator downstream, well-flushing pump successively, revolve between oil slick water separator and the strainer and strainer and well-flushing pump between all be connected by pipeline.
2, Oilfield wastewater treatment system flushing as claimed in claim 1 is characterized in that, described strainer is the automatic backwash accurate filter.
3, Oilfield wastewater treatment system flushing as claimed in claim 2 is characterized in that, is provided with the buffering water pot between described strainer and the well-flushing pump.
4, Oilfield wastewater treatment system flushing as claimed in claim 3 is characterized in that, described system also comprises air dissolved pump, and the water-in of this air dissolved pump connects described buffering water pot, and water outlet is located on the described water-and-oil separator.
CN 200620012523 2006-04-28 2006-04-28 Treatment system for flushing waste water of oil field Expired - Lifetime CN2908469Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620012523 CN2908469Y (en) 2006-04-28 2006-04-28 Treatment system for flushing waste water of oil field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620012523 CN2908469Y (en) 2006-04-28 2006-04-28 Treatment system for flushing waste water of oil field

Publications (1)

Publication Number Publication Date
CN2908469Y true CN2908469Y (en) 2007-06-06

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620012523 Expired - Lifetime CN2908469Y (en) 2006-04-28 2006-04-28 Treatment system for flushing waste water of oil field

Country Status (1)

Country Link
CN (1) CN2908469Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104609635A (en) * 2013-11-04 2015-05-13 中国石油化工股份有限公司 Mobile well flushing waste water processing system
CN111185031A (en) * 2020-01-20 2020-05-22 广州市绿森环保设备有限公司 Multistage oil-water separator and control method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104609635A (en) * 2013-11-04 2015-05-13 中国石油化工股份有限公司 Mobile well flushing waste water processing system
CN104609635B (en) * 2013-11-04 2016-04-27 中国石油化工股份有限公司 A kind of movable type well-flushing Waste Water Treatment
CN111185031A (en) * 2020-01-20 2020-05-22 广州市绿森环保设备有限公司 Multistage oil-water separator and control method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Dafeng Oil Field Tech Co., Ltd., Daqing

Assignor: Wanopu (Beijing) Oil Engineering Technology Development Academe Co., Ltd.

Contract fulfillment period: 2008.7.16 to 2015.7.15

Contract record no.: 2008230000084

Denomination of utility model: Treatment system for flushing waste water of oil field

Granted publication date: 20070606

License type: Exclusive license

Record date: 20081013

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.7.16 TO 2015.7.15; CHANGE OF CONTRACT

Name of requester: DAQING DAFENG OIL FIELD SCIENCE CO., LTD.

Effective date: 20081013

EXPY Termination of patent right or utility model
CX01 Expiry of patent term

Granted publication date: 20070606