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Descaling cleaning agent for poly-containing dirt on polymer flooding produced liquid treatment equipment

A cleaning agent and liquid treatment technology, which is applied in the direction of detergent compounding agent, detergent composition, surface active detergent composition, etc., can solve the problem of serious accumulation of dirt in production liquid treatment equipment, and achieve the goal of being suitable for marine transportation and Long-term storage, stable performance, and the effect of enhancing solvency

Inactive Publication Date: 2015-01-21
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of serious accumulation of dirt in the production fluid processing equipment caused by high polymer content in the production fluid of the offshore oilfield, the present invention provides a descaling and cleaning agent for the accumulation of dirt on the production fluid treatment equipment of the polymer flooding

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Take 60.73g of the dirt-containing sample attached to the electric dehydrator and put it in a 250ml beaker, and prepare 100g of descaling and cleaning agent with on-site formation water, and the proportion is:

[0019] 6% N-methylmorpholine;

[0020] 4% sodium tert-butoxide;

[0021] 5% Triethanolamine Lauryl Phosphate;

[0022] 22% Alkylphenol Ethoxylates;

[0023] 8% Sodium Alkyl Sulfate Ethoxylate;

[0024] 16% propylene glycol;

[0025] 14% isopropanol;

[0026] 14% propylene glycol butyl ether;

[0027] 0.8% sodium tripolyphosphate;

[0028] 2.5% EDTA tetrasodium salt;

[0029] 0.8% diethylenetriaminepentaacetate;

[0030] The remainder is water;

[0031] The dirt and scale samples on the electric dehydrator were completely dispersed after soaking in the descaling and cleaning agent at room temperature for 4 hours, and there was no agglomerated scale in the solution, which indicated that the dirt and scale samples containing polymers had been completely di...

Embodiment 2

[0033] Take 65.58g of the dirt-containing sample attached to the electric dehydrator and put it in a 250ml beaker, prepare 100g of descaling and cleaning agent with the formation water on site, and the proportion is:

[0034] 7% N,N-Diisopropylethylamine;

[0035] 5% Triethanolamine Lauryl Phosphate;

[0036] 5% sodium hydroxymethylcellulose;

[0037] 22% cetyl alcohol polyoxyethylene ether;

[0038] 9% myristyl polyoxyethylene ether succinate monoester sulfonate;

[0039] 17% ethylene glycol;

[0040] 13% ethylene glycol dimethyl ether;

[0041] 10% isopropanol;

[0042] 0.4% potassium pyrophosphate;

[0043] 1.2% sodium citrate;

[0044] 0.6% sodium alpha-glucoheptonate;

[0045] The remainder is water;

[0046] The dirt and scale samples on the electric dehydrator were completely dispersed after soaking in the descaling and cleaning agent at room temperature for 4 hours, and there was no agglomerated scale in the solution, which indicated that the dirt and scale sa...

Embodiment 3

[0048] Take 49.82g of the dirt-containing sample attached to the electric dehydrator and put it in a 250ml beaker, prepare 100g of descaling and cleaning agent with on-site formation water, and the mass percentages of each component in the descaling and cleaning agent are:

[0049] 8% N,N-Diisopropylethylamine;

[0050] 4% 1,8-diazabicycloundec-7-ene;

[0051] 6% sodium hydroxymethylcellulose;

[0052] 20% alkylphenol polyoxyethylene ether;

[0053] 8% Sodium Alkyl Sulfate Ethoxylate;

[0054] 20% propylene glycol;

[0055] 10% isopropanol;

[0056] 10% propylene glycol butyl ether;

[0057] 0.3% sodium tripolyphosphate;

[0058] 1.2% EDTA tetrasodium salt;

[0059] 0.5% diethylenetriaminepentaacetate;

[0060] The remainder is water;

[0061] The dirt and scale samples on the electric dehydrator were completely dispersed after soaking in the descaling and cleaning agent at room temperature for 4 hours, and there was no agglomerated scale in the solution, which indica...

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PUM

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Abstract

The invention belongs to the technical field of cleaning of polymer flooding produced liquid treatment equipment in the petroleum industry and provides a descaling cleaning agent for poly-containing dirt on polymer flooding produced liquid treatment equipment. The descaling cleaning agent comprises the following components in percentage by weight: 8-20wt% of polymer dispersant, 20-40wt% of oil scavenger, 35-55wt% of mutual solvent, 1-6wt% of metal ion chelating agent and the balance of water. The descaling cleaning agent provided by the invention has a good removal effect on the poly-containing dirt on electric dehydration systems, heat exchangers and sewage treatment systems and has stable performance, thereby being suitable for ocean transportation and long-term storage.

Description

technical field [0001] The invention belongs to the technical field of cleaning of production fluid treatment equipment for polymer flooding in the petroleum industry, and relates to a descaling cleaning agent formula chemical used for processing equipment for production fluid of polymer flooding in offshore oilfields. Background technique [0002] In recent years, polymer flooding oil recovery technology has been continuously applied and developed in the development of offshore oilfields in my country. While significantly improving oil recovery and achieving good economic benefits, the problem of produced fluid containing polymer has become increasingly prominent. In the field of cleaning technology of production fluid treatment equipment for polymer flooding in the petroleum industry, these polymers remaining in the production fluid will enter the electric dehydration, crude oil heat exchanger, sewage treatment When producing liquid treatment equipment such as the production...

Claims

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Application Information

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IPC IPC(8): C11D1/83C11D1/831C11D3/60C11D3/28C11D3/20C11D3/36C11D3/06C11D3/33C11D3/30C11D3/37C11D3/22
Inventor 赵迎秋靳晓霞
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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