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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1:

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

[0019] 6% N-methylmorpholine;

[0020] 4% sodium tert-butoxide;

[0021] 5% lauryl phosphate triethanolamine;

[0022] 22% alkylphenol polyoxyethylene ether;

[0023] 8% ethoxylated sodium alkyl sulfate;

[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% diethylene triamine pentaacetate;

[0030] The balance is water;

[0031] After soaking in the descaling cleaning agent at room temperature for 4 hours, the poly-contained dirt samples on the electric dehydrator are completely dispersed. There is no agglomerated dirt in the solution, indicating that the poly-contained dirt samples have been completely dispersed in the form of particles in the ...

Example Embodiment

[0032] Example 2:

[0033] Take 65.58g of the dirt-containing dirt sample attached to the electric dehydrator in a 250ml beaker, and prepare 100g of descaling detergent with on-site formation water. The ratio is:

[0034] 7% N,N-diisopropylethylamine;

[0035] 5% lauryl phosphate triethanolamine;

[0036] 5% sodium hydroxymethyl cellulose;

[0037] 22% cetyl alcohol polyoxyethylene ether;

[0038] 9% myristyl alcohol polyoxyethylene ether succinic acid 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 balance is water;

[0046] After soaking in the descaling cleaning agent at room temperature for 4 hours, the poly-contained dirt samples on the electric dehydrator are completely dispersed. There is no agglomerated dirt in the solution, indicating that the poly-contained dirt samples have been completely...

Example Embodiment

[0047] Example 3:

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

[0049] 8% N,N-diisopropylethylamine;

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

[0051] 6% sodium hydroxymethyl cellulose;

[0052] 20% alkylphenol polyoxyethylene ether;

[0053] 8% ethoxylated sodium alkyl sulfate;

[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% diethylene triamine pentaacetate;

[0060] The balance is water;

[0061] After soaking in the descaling cleaning agent at room temperature for 4 hours, the poly-contained dirt samples on the electric dehydrator are completely dispersed. There is no agglomerated dirt in the solution, indicating that the poly-contained dirt...

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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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