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A degreasing agent for salt-tolerant polymer flooding produced water and its preparation method

A technology of degreaser and polymer, which is applied in the field of degreaser and its preparation for salt-resistant polymer flooding produced water, can solve the problems of complex and changeable operation methods, and achieve easy acquisition, transportation and storage, simple synthesis process, Effect of strong cation exchange properties

Active Publication Date: 2019-06-14
HENAN ZHENGJIA ENERGY ENVIRONMENTAL PROTECTION CO LTD
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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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  • A degreasing agent for salt-tolerant polymer flooding produced water and its preparation method
  • A degreasing agent for salt-tolerant polymer flooding produced water and its preparation method
  • A degreasing agent for salt-tolerant polymer flooding produced water and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0033]

[0034]

[0035] According to existing literature, the preparation method of described Gemini surfactant is as follows:

[0036]

[0037] (2) Degreaser AB 1 The preparation method is as follows:

[0038] ①Add 15 parts of water to the beaker, adjust the temperature to 50°C, slowly add 1 part of montmorillonite, stir evenly, the stirring speed is 200rpm, and the stirring time is 10min;

[0039] ②Add 10 parts of Gemini surfactant to the above beaker, adjust the temperature to 30°C, stir evenly, the stirring speed is 300rpm, and the stirring time is 30min;

[0040] ③ Adjust the temperature to 60°C, add 2 parts of sodium dioctyl sulfosuccinate to the above beaker, stir well, the stirring speed is 500rpm, and the stirring time is 20min;

[0041] ④ Adjust the temperature to 40°C, pour 15 parts of water slowly, stir even...

Embodiment 2

[0042] Embodiment 2: Degreaser AB 2 and its preparation method

[0043] (1) Degreaser AB 2 The composition and its components are as follows:

[0044]

[0045] According to existing literature, the preparation method of described Gemini surfactant is as follows:

[0046]

[0047] (2) Degreaser AB 2 The preparation method is as follows:

[0048] ①Add 18 parts of water to the beaker, adjust the temperature to 52°C, slowly add 1.5 parts of montmorillonite, stir evenly, the stirring speed is 230rpm, and the stirring time is 15min;

[0049] ②Add 10 parts of Gemini surfactant to the above beaker, adjust the temperature to 35°C, stir evenly, the stirring speed is 400rpm, and the stirring time is 40min;

[0050] ③ Adjust the temperature to 63°C, add 3 parts of sodium dioctyl sulfosuccinate to the above beaker, stir evenly, the stirring speed is 550rpm, and the stirring time is 26min;

[0051] ④ Adjust the temperature to 43°C, pour 18 parts of water slowly, stir evenly, the...

Embodiment 3

[0052] Embodiment 3: Degreaser AB 3 and its preparation method

[0053] (1) Degreaser AB 3 The composition and its components are as follows:

[0054]

[0055] According to existing literature, the preparation method of described Gemini surfactant is as follows:

[0056]

[0057] (2) Degreaser AB 3 The preparation method is as follows:

[0058] ①Add 22.5 parts of water into the beaker, adjust the temperature to 55°C, slowly add 1.8 parts of montmorillonite, stir evenly, the stirring speed is 260rpm, and the stirring time is 18min;

[0059] ②Add 10 parts of Gemini surfactant to the above beaker, adjust the temperature to 36°C, stir evenly, the stirring speed is 450rpm, and the stirring time is 45min;

[0060] ③ Adjust the temperature to 67°C, add 3.5 parts of sodium dioctyl sulfosuccinate to the above beaker, stir well, the stirring speed is 570rpm, and the stirring time is 22min;

[0061] ④ Adjust the temperature to 45°C, pour 22.5 parts of water slowly, stir evenl...

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Abstract

The invention belongs to the technical field of oilfield sewage treatment, and particularly relates to a salt-resistant polymer-flooding produced water deoiling agent. The deoiling agent is compounded from a Gemini surfactant, montmorillonite, sodium dioctyl succinate sulfonate and water, wherein the Gemini surfactant is a symmetric molecule with long-carbon-chain alkyls and bis benzene sulfonate polar groups. The deoiling agent has the characteristics of simple preparation technique, low cost, favorable salt resistance, high salinity resistance (up to 25000 mg / L) and favorable deoiling effect. The polymer-flooding produced water deoiling rate is up to 97% or above, which is enhanced by 50% or above as compared with the existing reagent. Therefore, the deoiling agent provided by the invention can be widely used in a polymer-flooding produced water deoiling technique.

Description

technical field [0001] The invention relates to a degreasing agent for oilfield sewage treatment, in particular to a degreasing agent for flooding produced water with a salt-tolerant polymer 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 a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00C02F1/40C02F1/28C02F1/52C02F1/54C02F103/10
CPCC02F1/00C02F1/28C02F1/281C02F1/285C02F1/40C02F1/52C02F1/54C02F2103/10C02F2305/04
Inventor 吕小芳
Owner HENAN ZHENGJIA ENERGY ENVIRONMENTAL PROTECTION CO LTD