Compound degreaser for polymer flooding produced water and preparation method thereof

A degreaser and polymer technology, which is applied in the field of composite degreaser for polymer flooding produced water and its preparation, can solve the problems of complex and changeable operation modes, achieve the promotion of adsorption performance and interface modification ability, and reduce costs , to meet the effect of degreasing pretreatment

Inactive Publication Date: 2017-03-29
YANTAI SMITHDE ELECTROMECHANICAL EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex and changeable methods of ground implementation, the composition of sewage has obvious regional and timeliness

Method used

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  • Compound degreaser for polymer flooding produced water and preparation method thereof
  • Compound degreaser for polymer flooding produced water and preparation method thereof
  • Compound degreaser for polymer flooding produced water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: Degreaser AD 1 and its preparation method

[0032] (1) Degreaser AD 1 The composition and its components are as follows:

[0033]

[0034] According to existing literature, the preparation method of described Gemini surfactant is as follows:

[0035]

[0036] (2) Degreaser AD 1 The preparation method is as follows:

[0037] ① Add 15 parts of water into the beaker, adjust the temperature to 52°C, slowly add 2 parts of sodium dodecylsulfonate, stir well, the stirring speed is 230rpm, and the stirring time is 20min;

[0038] ②Add 10 parts of Gemini surfactant to the above beaker, adjust the temperature to 53°C, stir evenly, the stirring speed is 400rpm, and the stirring time is 30min;

[0039] ③ Adjust the temperature to 68°C, add 1 part of sodium bicarbonate to the above beaker, stir evenly, the stirring speed is 350rpm, and the stirring time is 20min;

[0040] ④ Adjust the temperature to 45°C, pour 15 parts of water slowly, stir evenly, the stir...

Embodiment 2

[0041] Embodiment 2: Degreaser AD 2 and its preparation method

[0042] (1) Degreaser AD 2 The composition and its components are as follows:

[0043]

[0044] According to existing literature, the preparation method of described Gemini surfactant is as follows:

[0045]

[0046] (2) Degreaser AD 2 The preparation method is as follows:

[0047] ①Add 18 parts of water into the beaker, adjust the temperature to 48°C, slowly add 5 parts of sodium dodecylsulfonate, stir well, the stirring speed is 260rpm, and the stirring time is 25min;

[0048] ②Add 10 parts of Gemini surfactant to the above beaker, adjust the temperature to 57°C, stir evenly, the stirring speed is 450rpm, and the stirring time is 40min;

[0049] ③ Adjust the temperature to 65°C, add 3 parts of sodium bicarbonate to the above beaker, stir evenly, the stirring speed is 320rpm, and the stirring time is 23min;

[0050] ④ Adjust the temperature to 48°C, pour 18 parts of water slowly, stir evenly, the stir...

Embodiment 3

[0051] Embodiment 3: Degreaser AD3 and its preparation method

[0052] (1) Degreaser AD 3 The composition and its components are as follows:

[0053]

[0054] According to existing literature, the preparation method of described Gemini surfactant is as follows:

[0055]

[0056] (2) Degreaser AD 3 The preparation method is as follows:

[0057] ①Add 20 parts of water into the beaker, adjust the temperature to 45°C, slowly add 3 parts of sodium dodecylsulfonate, stir well, the stirring speed is 200rpm, and the stirring time is 28min;

[0058] ②Add 10 parts of Gemini surfactant to the above beaker, adjust the temperature to 50°C, stir evenly, the stirring speed is 480rpm, and the stirring time is 50min;

[0059] ③ Adjust the temperature to 75°C, add 2.5 parts of sodium bicarbonate to the above beaker, stir evenly, the stirring speed is 300pm, and the stirring time is 26min;

[0060] ④ Adjust the temperature to 52°C, pour 20 parts of water slowly, stir evenly, the stirr...

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Abstract

The invention belongs to the technical filed of oilfield sewage disposal, and particularly relates to a compound degreaser for polymer flooding produced water and a preparation method thereof. The compound degreaser is formed by compounding a Gemini surface active agent, sodium bicarbonate, sodium dodecyl sulfate and water, wherein the Gemini surface active agent is a symmetrical molecule which has long carbon chain alkyl and diphenyl sulfonate polar groups. The compound degreaser has the characteristics of simple preparing process, low cost, good salt resistant property, salinity tolerance being up to 250,000 mg/L and good oil removal effect. The oil removal rate of the polymer flooding produced water reaches up to 97% and is increased by 50% or more compared with existing chemicals. Therefore, the compound degreaser can be widely applied to the oil removal process of the polymer flooding produced water.

Description

technical field [0001] The invention relates to a degreasing agent for oil field sewage treatment, in particular to a composite degreasing agent for polymer flooding produced water and a preparation method thereof. Background technique [0002] Polymer flooding technology has achieved good oil-increasing effect. Polyacrylamide (PAM) is contained in polymer flooding. Due to the similarity between PAM and emulsifier molecules, the molecules in the system where PAM exists are concentrated at the oil-water interface, forming a composite film with greater strength and good elasticity together with emulsifier molecules. Based on the above characteristics, the oil content index of the wastewater produced by polymer flooding is relatively high. [0003] With the expansion of the application scale of polymer flooding, the following problem is the treatment of polymer flooding sewage. The sewage of polymer flooding not only has high oil content, but also contains a large amount of p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F1/40C02F1/54
CPCC02F1/00C02F1/285C02F1/40C02F1/547C02F2103/10C02F2305/04
Inventor 吕小芳
Owner YANTAI SMITHDE ELECTROMECHANICAL EQUIP MFG
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