Solid corrosion and scale inhibitor and processing method thereof

A processing method and technology of anti-scaling agent, applied in chemical instruments and methods, earthwork drilling, scale removal and water softening, etc. Predominant price, excellent scale and corrosion inhibition, good temperature resistance

Active Publication Date: 2020-06-02
刘辉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are often a large number of bacteria in the oil well, which will cause corrosion to the pipeline and affect the service life of the pipeline. However, the above-mentioned solid slow-release scale inhibitor cannot achieve the effect of sterilization, and there are limitations in its use.

Method used

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  • Solid corrosion and scale inhibitor and processing method thereof
  • Solid corrosion and scale inhibitor and processing method thereof
  • Solid corrosion and scale inhibitor and processing method thereof

Examples

Experimental program
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preparation example Construction

[0044] The preparation of the imidazoline quaternary ammonium salt in the embodiment and the comparative example includes the following steps, in the device reactor with reflux and oil-water splitter, add 350-500 parts of alkyl acid, add 40-100 parts of polyethylene polyamine 150-250 parts of xylene as a water-carrying agent, stir and heat to 160°C, keep the reaction temperature at 140-180°C, reflux for 6-10 hours, add 30-50 parts of benzyl chloride, stir and heat to 80-120°C, Reflux for 4-6 hours, then raise the temperature to 120-200°C, vacuum pressure 0.01-0.1MPa, evaporate unreacted polyethylene polyamine and xylene, and obtain imidazoline quaternary ammonium salt after cooling.

[0045] In the present embodiment, the specific parameters are set as follows. In the device reactor with reflux and oil-water separator, add 350 parts of alkanoic acid, 40 parts of polyethylene polyamine, and 150 parts of water-carrying agent xylene, stir and heat To 160°C, keep the reaction temp...

Embodiment 1

[0052] A solid slow-release antiscaling agent, comprising the following components: 300kg of imidazoline quaternary ammonium salt, 90kg of organic phosphoric acid, 20kg of bactericide, 7kg of dispersant, and 200kg of water.

[0053] The processing method of the solid slow-release antiscaling agent comprises the following steps: weighing raw materials by weight, mixing uniformly, collecting the mixture, and performing briquetting treatment, collecting the extruded product, and air-drying naturally to obtain the solid slow-release antiscaling agent . The extruded shape is a rod or a ball, preferably a rod in this document.

[0054] During the construction of the solid slow-release anti-fouling agent, prepare materials as required. Calculated on the basis that the effective concentration of corrosion inhibitor is 15mg / L and the active ingredient is 90%, per m 3 The medicament material needed for the liquid yield is 15g.

[0055] The construction process includes the following ...

Embodiment 2

[0060] The difference between embodiment 2 and embodiment 1 lies in the difference of component content.

[0061] components Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 imidazoline quaternary ammonium salt 30 32 35 32 32 32 organophosphate 9 9 9 8 10 9.5 fungicide 2 2 2 2 2 2 Dispersant 0.7 0.7 0.7 0.7 0.7 0.7 water 20 25 30 25 25 25 components Example 7 Example 8 Example 9 Example 10 Example 11 Example 12 imidazoline quaternary ammonium salt 32 32 35 32 32 32 organophosphate 9 9 9 8 10 10 fungicide 1 3 2 2 2 2 Dispersant 0.7 0.7 0.5 1 0.7 0.7 water 25 25 25 25 25 25

[0062] Experimental detection

[0063] 1. The appearance is required to be a light yellow or brown stick.

[0064] 2. Static corrosion inhibition rate / %: (1) After treating the metal test piece with petroleum ether and absolute ethanol with a boili...

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Abstract

The invention relates to a solid corrosion and scale inhibitor and a processing method thereof, and belongs to the technical field of oil-water well scale prevention. The solid corrosion and scale inhibitor comprises the following components in parts by weight: 30 to 35 parts of imidazoline quaternary ammonium salt, 8 to 10 parts of organic phosphoric acid, 1-3 parts of fungicide, 0.5-1 part of dispersant, and 20-30 parts of water. The processing method comprises the following step of evenly dispersing the imidazoline quaternary ammonium salt, the organic phosphoric acid and the fungicide in the dispersant of the network structure to form a solid block. A long-acting slow-release mechanism is that the dissolution rate of an oil-soluble slow-release regulator with a network structure achieves slow and stable release, so that the imidazoline quaternary ammonium salt and the organic phosphoric acid are uniformly dispersed in an oil-water mixture in a shaft to form the scale inhibitor withcomprehensive effects of slow release, scale inhibition and sterilization, and the user performance is high..

Description

technical field [0001] The invention relates to the technical field of scale prevention in oil and water wells, in particular to a solid corrosion inhibitor and scale inhibitor and a processing method thereof. Background technique [0002] In the process of production and development of oil and gas fields, the problem of corrosion and scaling of downhole pipe strings in oil wells is often encountered. There are many reasons for the corrosion and scaling of steel surfaces in oil wells, but the main reasons are the high salinity of the output liquid, the presence of corrosive media, fungi and liquids Changes in factors such as pressure and temperature in the flow process, etc. The type of scale depends on the content of different ions in the liquid, which may be sulfate scale or carbonate scale. In addition, corrosion and scaling are often intertwined and exist simultaneously. There are also various methods to suppress or solve the corrosion and scaling on the steel surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B37/06C02F5/14C02F3/34
CPCE21B37/06C02F5/145C02F3/342
Inventor 刘辉张斌韩光顺黄文辉唐向东朱强
Owner 刘辉
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