Processing unit for reclaiming dirty oil from united station in oil field

A technology of sewage oil recovery and treatment device, which is applied in the fields of grease/oily substance/float removal device, centrifugal separation water/sewage treatment, liquid separation, etc. , environmental pollution, etc.

Inactive Publication Date: 2005-01-12
DAQING OILFIELD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, sewage oil containing black solid particles has successively appeared in the production fluid treatment facilities of some joint stations in many oil fields. Among them, the sewage oil in the upper part of the sewage settling tank and deoiling tank, due to the enrichment of a large number of black solid particles, It has caused great difficulties in the treatment of production fluid and oily sewage, which not only deteriorates the water quality of oily sewage after treatment, but also can lead to pollution of oily sewage filters and sewage reinjection systems in severe cases; if the sewage settling tank and deoiling tank When the dirty oil containing black solid particles enriched in the upper part is recycled to the crude oil dehydration system for treatment, an intermediate transition layer is easily formed in the electric dehydrator, which often causes the electric dehydrator to cross the electric field, seriously affecting the normal production of the crude oil dehydration system run
In order to ensure the normal treatment of the produced fluid and oily sewage in the combined station system, when there is too much sewage oil enriched in the sewage settling tank and oil removal tank, it is often necessary to directly discharge it, which not only loses a lot crude oil, which also caused serious environmental pollution

Method used

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  • Processing unit for reclaiming dirty oil from united station in oil field
  • Processing unit for reclaiming dirty oil from united station in oil field

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specific Embodiment approach 1

[0005] Specific embodiment 1: This embodiment includes sewage oil single-screw lifting pump 1, pipeline mixer 2, three-phase centrifugal separator 3, sewage recovery tank 4, sewage recovery pump 5, heating buffer separator 6, sewage oil lifting pump 7 , solid sediment recovery tank 9, sediment cleaning tank 10 and lift pump 11, their connection mode is: one end of pipeline mixer 2 is connected with one end of single screw lift pump 1, and the other end of pipeline mixer 2 is connected with centrifugal separator 3 The inlet of the centrifuge 3 is connected to each other; the sewage outlet of the centrifuge 3 is connected to one end of the sewage recovery tank 4, the other end of the sewage recovery tank 4 is connected to one end of the sewage recovery pump 5, and the other end of the sewage recovery pump 5 is connected to the sewage treatment system; centrifugal separation The separation slag outlet of machine 3 links to each other with one end of solid sediment recovery tank 9,...

specific Embodiment approach 2

[0006] Embodiment 2: The difference between this embodiment and Embodiment 1 is that a flow meter 13 is installed between the sewage recovery pump 5 and the sewage treatment system, and a flow meter is installed between the lift pump 11 and the centrifuge 3 12. A flow meter 8 is installed between the waste oil lifting pump 7 and the crude oil dehydration system, and a flow meter 14 is installed between the lifting pump 1 and the pipeline mixer 2.

[0007] The working principle of the present invention is: the dirty oil produced in the treatment facilities in the oil field combined station production liquid treatment system enters the pipeline mixer 2 after passing through the dirty oil single-screw lifting pump 1 and the flow meter 14, and can pass through the dosing device 15 in the pipeline mixer. The sewage oil purifier is added into the pipeline mixer 2, and after being mixed by the pipeline mixer 2, it enters the three-phase centrifuge 3 to separate oil, water and black co...

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Abstract

The invention relates to recovering and processing device for sump oil created in oil field. It is for resolving the problem that sump oil containing black solid particles in liquid mined from oil field is difficult to treatment. The divece consists of sump oil single screw lift pump, pipe mixer, three-phase centrifuge, sewage recovering tank, sewage recovering pump, heat buffer separator, sump oil lift pump, solid dregs recovering tank, sewage recovering pump, dregs cleaning tank and lift pump. the pipe mixer is connected with entrance of single-screw lift pump and centrifuge, the sewage exit of centrifuge is connected with and end of sewage recovering tank, crude oil exit of centrifuge is connected with entrance of heat buffer separator.

Description

Technical field: [0001] The invention relates to a device for recovering and treating the waste oil produced in the production fluid treatment facility of an oilfield combined station. Background technique: [0002] In recent years, sewage oil containing black solid particles has successively appeared in the production fluid treatment facilities of some joint stations in many oil fields. Among them, the sewage oil in the upper part of the sewage settling tank and deoiling tank, due to the enrichment of a large number of black solid particles, It has caused great difficulties in the treatment of production fluid and oily sewage, which not only deteriorates the water quality of oily sewage after treatment, but also can lead to pollution of oily sewage filters and sewage reinjection systems in severe cases; if the sewage settling tank and deoiling tank When the dirty oil containing black solid particles enriched in the upper part is recycled to the crude oil dehydration system ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/38C02F1/40
Inventor 夏福军吴迪陈忠喜张瑞泉孟祥春房永罗兴仁
Owner DAQING OILFIELD CO LTD
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