Process for super-refining treatment of rejection water of low permeability oilfield and compound drive oilfield

A technology for oil field reinjection and process method, which is applied in the field of ultra-fine treatment of low-permeability oilfields and composite flooding oilfields, and low-permeability oilfields and composite flooding oilfields. Complexity and other issues, to achieve the effect of high equipment utilization

Inactive Publication Date: 2014-03-12
马广肃
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a large amount of chemical treatment is added, excluding the cost of sludge treatment, the cost is mostly 16-20 yuan / ton, and some can reach 28 yuan / ton
At the same time, due to the addition of chemicals, the viscosity of the sludge is increased, making it difficult to handle the sludge, resulting in "secondary pollution"
And due to the complex process, resulting in poor operational stability

Method used

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  • Process for super-refining treatment of rejection water of low permeability oilfield and compound drive oilfield

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The process of the ultra-fine treatment system for reinjection water in low-permeability oilfields and composite flooding oilfields is as follows:

[0025] 1), pre-coating: open the first automatic valve 7 and the first flow control valve 17, start the main machine 1, the mixing tank 2 and the adding pump 6, the filtrate in the mixing tank 2 enters the main machine 1 through the adding pump 6, and the filtrate passes through the main machine 1 Afterwards, pass into the second liquid storage tank 8, and the filtrate is pre-coated with a layer of film on the filter plate in the main machine 1; the film and the filter plate of the main machine 1 form the main machine filter element;

[0026] 2) Internal circulation: open the second automatic valve 10 and the second flow control valve 11, the dirty liquid in the second liquid storage tank 8 is mixed with the filtrate through the first filter pump and enters the main machine 1 through the inlet of the main machine 1, and ...

Embodiment 2

[0031] The process of the ultra-fine treatment system for reinjection water in low-permeability oilfields and composite flooding oilfields is as follows:

[0032] 1), pre-coating: open the first automatic valve 7 and the first flow control valve 17, start the main machine 1, the mixing tank 2 and the adding pump 6, the filtrate in the mixing tank 2 enters the main machine 1 through the adding pump 6, and the filtrate passes through the main machine 1 Afterwards, pass into the second liquid storage tank 8, and the filtrate is pre-coated with a layer of film on the filter plate in the main machine 1; the film and the filter plate of the main machine 1 form the main machine filter element;

[0033] 2) Internal circulation: open the second automatic valve 10 and the second flow control valve 11, the dirty liquid in the second liquid storage tank 8 is mixed with the filtrate through the first filter pump and enters the main machine 1 through the inlet of the main machine 1, and ...

Embodiment 3

[0038] The process of the ultra-fine treatment system for reinjection water in low-permeability oilfields and composite flooding oilfields is as follows:

[0039] 1), pre-coating: open the first automatic valve 7 and the first flow control valve 17, start the main machine 1, the mixing tank 2 and the adding pump 6, the filtrate in the mixing tank 2 enters the main machine 1 through the adding pump 6, and the filtrate passes through the main machine 1 Afterwards, pass into the second liquid storage tank 8, and the filtrate is pre-coated with a layer of film on the filter plate in the main machine 1; the film and the filter plate of the main machine 1 form the main machine filter element;

[0040] 2) Internal circulation: open the second automatic valve 10 and the second flow control valve 11, the dirty liquid in the second liquid storage tank 8 is mixed with the filtrate through the first filter pump and enters the main machine 1 through the inlet of the main machine 1, and ...

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Abstract

The invention relates to a process for super-refining treatment of rejection water of a low permeability oilfield and a compound drive oilfield, belonging to the field of sewage treatment in the oilfields. Sewage is treated by adopting pre-coating, internal-recycling, treating and real-time drying, and slag cakes obtained from treatment of the sewage can be further developed and recycled in other aspects such as paving or can be used as a road asphalt additive without backwashing and water resource waste and power consumption caused by same as well as secondary pollution; and through type selection of the additive, the flow and the precision of the regulation water can be regulated.

Description

technical field [0001] The invention relates to a process method for reinjection water in low-permeability oil fields and compound flooding oil fields, in particular to a process method for superfine treatment of reinjection water in low-permeability oil fields and compound flooding oil fields, which belongs to the field of oilfield sewage treatment. Background technique [0002] At present, the conventional treatment process of oilfield reinjection water is a three-stage treatment process: buffer adjustment section, sedimentation separation treatment section, and pressure filtration section. [0003] For low-permeability oil fields, a fine treatment section needs to be added after the conventional treatment process to meet the industry standard for reinjection water (SY / T5329-94). According to incomplete understanding, the methods currently used in the fine treatment section of the domestic oil exploration industry include: quartz sand filtration, walnut shell filtration, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F103/10
Inventor 马广肃
Owner 马广肃
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