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Paraffin-cleaning antiseptic corrosion inhibitor

A technology for scale inhibitor and wax removal, which is applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of incompatibility between wax removal and viscosity reduction agents and anti-corrosion and anti-scaling agents, and can meet the requirements of anti-corrosion and anti-scaling. Enhanced recovery effect

Active Publication Date: 2007-09-05
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Utilize the performance of wax removal, anticorrosion and scale inhibitor, which can not only remove wax, but also prevent corrosion and scale, and solve the problem of incompatibility between conventional wax removal and viscosity reducing agents and anticorrosion and antiscaling agents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: In June 2005, the invention was used for trial use in more than 30 oil wells of an oil production plant in the east, and the problem of wax removal, corrosion, and scale inhibition of oil wells was solved.

[0038] The material component weight ratio of wax-removing anticorrosion and scale inhibitor for oil well is: polyvinylidene polyamine polyoxypropylene polyoxyethylene ether (industrial product): 4.2%; dodecyl dimethyl benzyl ammonium chloride (industrial product) product): 15.5%; FC-N01 fluorocarbon surfactant: 0.04%; formaldehyde (industrial product): 5.0%; urotropine: 5.2%, sodium hydroxyethylidene diphosphate: 18%; water: 52.06%.

[0039] The preparation process is: firstly, polyvinylidene polyamine polyoxypropylene polyoxyethylene ether, FC-N01 fluorocarbon surfactant, dodecyl dimethyl benzyl ammonium chloride, formaldehyde, urotropine, hydroxyl The six raw materials of sodium ethylidene diphosphate are added in proportion to the normal pressure e...

Embodiment 2

[0040] Example 2: In June 2005, the present invention was used for trial use in more than 20 oil wells in another oil production plant, and the problem of wax removal, corrosion, and scale inhibition in oil wells was solved.

[0041] The wax-removing anticorrosion and scale inhibitor material component weight ratio of oil well is: polyvinylidene polyamine polyoxypropylene polyoxyethylene ether (industrial product): 9.0%; dodecyl dimethyl benzyl ammonium chloride (industrial product ): 17.0%; FC-N01 fluorocarbon surfactant: 0.07%; formaldehyde (industrial product): 8.0%; urotropine: 6.5%, sodium hydroxyethylidene diphosphate: 20%; water: 39.43%.

[0042] The preparation process is: firstly, polyvinylidene polyamine polyoxypropylene polyoxyethylene ether, FC-N01 fluorocarbon surfactant, dodecyl dimethyl benzyl ammonium chloride, formaldehyde, urotropine, hydroxyl The six raw materials of sodium ethylidene diphosphate are added in proportion to the normal pressure enamel reaction...

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PUM

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Abstract

A paraffin-cleaning antiseptic scale inhibitor for oil well consists of polyethylene-polyamine polyoxytrimethylene polyethenoxy ether 3.4-12wt%, lauryl-dimethylbenzyl ammonium chloride 13.5-17wt%, FC-NO1 fluorocarbon surface activator 0.02-0.10wt%, formaldehyde 4.5-9.5wt%, hexamine 3.2-7.4wt%, hydroxyl-ethidene-sodium nucleotide 15-25wt% and water 35-58wt%. It has excellent anticorrosive and anti-scaling effects.

Description

technical field [0001] The invention relates to a wax-removing, anti-corrosion and scale-inhibiting agent for oil wells, in particular to a wax-removing, anti-corrosion and scale-inhibiting agent formula for oil wells and a preparation method thereof. Background technique [0002] At present, to effectively inhibit the corrosion and scaling of oil wells, a better method is to regularly add corrosion and scale inhibitors to the oil wells. At the same time, some oil wells have high wax content and thick oil, and normal production needs to add wax-removing and viscosity-reducing agents for maintenance. However, the compatibility of these two types of medicaments is poor, and there is a phenomenon that they cannot be well compatible. Simultaneously applying the effect of mutually reducing medicaments is not conducive to the joint function of the two types of medicaments, which brings great difficulty to production management. Contents of the invention [0003] The object of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524
Inventor 付亚荣蔡远红李冬青刘建华
Owner PETROCHINA CO LTD
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