Multifunctional treating agent for oilfield sewage

An oilfield sewage, multi-functional technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc. The effect of high oil removal rate, high charge density and small dosage

Inactive Publication Date: 2015-11-25
张哲夫
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its main disadvantages are that it occupies a large area, consumes a large amount of chemicals, and requires high investment, and the regeneration of the adsorbent

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] A multifunctional treatment agent for oilfield sewage, which is composed of a demulsifier, a flocculant, a corrosion inhibitor, a surfactant and a bactericide; the mass parts of each component are 15-25 parts of demulsifier, 10-20 parts of flocculant, 20-25 parts of corrosion inhibitor, 5-10 parts of surfactant, 5-8 parts of fungicide;

[0059] Wherein, the demulsifier is made from the following raw materials in parts by weight:

[0060] Etherified starch 15

[0061] Cetyl alcohol polyoxyethylene ether 2

[0062] Pentaerythritol 5

[0063] Lauryl alcohol polyoxyethylene ether 12;

[0064] Wherein, flocculant is made from the raw material of following parts by weight:

[0065] Polyacrylamide 11

[0066] Triethanolamine 1;

[0067] Wherein, the corrosion inhibitor is made from the following raw materials in parts by weight:

[0068] tetradecyl dimethyl benzyl ammonium chloride 8

[0069] 1-[bis(4-cyanophenyl)methyl]-1,2,4-triazole 9

[0070] Dioctyl phthalate 2 ...

Embodiment 2

[0083] A multifunctional treatment agent for oilfield sewage, which is composed of a demulsifier, a flocculant, a corrosion inhibitor, a surfactant and a bactericide; the mass parts of each component are 15-25 parts of demulsifier, 10-20 parts of flocculant, 20-25 parts of corrosion inhibitor, 5-10 parts of surfactant, 5-8 parts of fungicide;

[0084] Wherein, the demulsifier is made from the following raw materials in parts by weight:

[0085] Etherified starch 18

[0086] Cetyl alcohol polyoxyethylene ether 5

[0087] Pentaerythritol 7

[0088] Lauryl alcohol polyoxyethylene ether 15;

[0089] Wherein, flocculant is made from the raw material of following parts by weight:

[0090] Polyacrylamide 15

[0091] Triethanolamine 4;

[0092] Wherein, the corrosion inhibitor is made from the following raw materials in parts by weight:

[0093] tetradecyl dimethyl benzyl ammonium chloride 15

[0094] 1-[bis(4-cyanophenyl)methyl]-1,2,4-triazole 14

[0095] Dioctyl phthalate 5...

Embodiment 3

[0108] A multifunctional treatment agent for oilfield sewage, which is composed of a demulsifier, a flocculant, a corrosion inhibitor, a surfactant and a bactericide; the mass parts of each component are 15-25 parts of demulsifier, 10-20 parts of flocculant, 20-25 parts of corrosion inhibitor, 5-10 parts of surfactant, 5-8 parts of fungicide;

[0109] Wherein, the demulsifier is made from the following raw materials in parts by weight:

[0110] Etherified starch 16

[0111] Cetyl alcohol polyoxyethylene ether 4

[0112] Pentaerythritol 6

[0113] polyoxyethylene lauryl ether 13

[0114] Wherein, flocculant is made from the raw material of following parts by weight:

[0115] Polyacrylamide 13

[0116] Triethanolamine 2

[0117] Wherein, the corrosion inhibitor is made from the following raw materials in parts by weight:

[0118] Tetradecyldimethylbenzylammonium chloride 12

[0119] 1-[bis(4-cyanophenyl)methyl]-1,2,4-triazole 13

[0120] Dioctyl phthalate 3

[0121] 4-...

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Abstract

The invention relates to a multifunctional treating agent for oilfield sewage, which is composed of the following components in parts by weight: 15-25 parts of demulsifier, 10-20 parts of flocculant, 20-25 parts of corrosion inhibitor, 5-10 parts of surfactant and 5-8 parts of bactericide. The treating agent can simultaneously perform the functions of demulsification, flocculation, bridging, foaming, corrosion and scale inhibition, and sterilization. The composite oily sewage treating agent has the advantages of low consumption, high oil removal rate and obvious corrosion and scale inhibition effects, and is especially suitable for treating high-concentration oilfield sewage.

Description

technical field [0001] The invention relates to a multifunctional treatment agent for oil field sewage, which belongs to the field of water treatment. Background technique [0002] In oilfields exploited by water injection, most of the water injected into the oil layer from the water injection well returns to the ground through the oil production well, and this part of the water must be removed before the crude oil is transported and exported, and the extracted sewage contains crude oil , so it is called oilfield produced water. With the increase of oilfield exploitation years, the water content of water production fluid has been rising, and some blocks have reached more than 90%. These oily sewage have become the main water injection water source of oilfields. With the continuous development of low-permeability oilfields and off-surface reservoirs around oilfields, the requirements for water quality of oilfield injection are more stringent. [0003] The composition of dri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/40C02F1/54C02F5/10C02F1/50C02F103/10
Inventor 张哲夫
Owner 张哲夫
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