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High molecular emulsion polymer and preparation method thereof

A polymer emulsion and polymer technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of high equipment operation cost and large investment, and achieve good coating inhibition effect.

Active Publication Date: 2010-11-10
濮阳市诚信钻采助剂有限公司
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

The use of high-purity nitrogen to remove oxygen requires complex nitrogen-making equipment, which requires large investment and high equipment operating costs, which will greatly increase the production cost of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] The preparation method of described macromolecule emulsion polymer, comprises the following steps:

[0031] (1), choose the following raw materials in parts by weight: 2500-3500 parts of water, 1000-2500 parts of white oil, 500-1500 parts of acrylamide, 150-500 parts of acrylic acid, 150-250 parts of potassium hydroxide, 2-acrylamide - 50-100 parts of 2-methylpropanesulfonic acid, 150-200 parts of a composition composed of SA and Span80, 0.2-0.5 parts of ammonium persulfate, 0.5-3.0 parts of sodium bisulfite, 0.2- 0.5 parts, wherein the ratio of parts by weight of Span80 to SA is: 1:0.05-1:0.3;

[0032] (2), add water in the heating kettle, after heating and boiling, remove metal interfering ions with polymerization-inhibiting properties in the water, and airtightly cool;

[0033] (3) Add the composition composed of the above-mentioned amount of white oil, SA and Span80 into the emulsification kettle and stir at a low speed to dissolve;

[0034] (4), add treated water...

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PUM

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Abstract

The invention relates to a high molecular emulsion polymer for drilling fluid and a preparation method thereof. The high molecular emulsion polymer is characterized by comprising the following raw materials in parts by weight: 2500-3500 parts of water, 1000-2500 parts of white oil, 500-1500 parts of acrylamide, 150-500 parts of acrylic acid, 150-250 parts of pH adjuster, 50-100 parts of 2-acrylamide-2-methyl propanesulfonic acid, 150-200 parts of composition formed by SA and Span 80, 0.2-0.5 part of oxidizer, 0.5-3.0 parts of reducer, and 0.2-0.5 part of azo initiator, wherein the ratio of Span 80 to SA in parts by weight is 1:0.05-1:0.3. The high molecular emulsion polymer prepared by the method with simple and convenient operation has the average molecular weight reaching 6-10 millions and good coating inhibition property.

Description

technical field [0001] The invention relates to an emulsion polymer for drilling fluid and a preparation method thereof. Background technique [0002] High molecular polymers prepared with acrylamide and acrylic acid as the main raw materials are the main treatment agents for drilling fluids and have been widely used in oil fields. But at present, solid products are mainly used, and the dissolution rate is slow, and glue blocks and fish eyes are easy to appear during use. If they are directly added to drilling fluid, they are easily screened out by vibrating screens, resulting in waste and inconvenient use. A high-viscosity emulsion polymer HP for drilling fluid is made by inverse emulsion polymerization technology, which overcomes the above-mentioned defects and is an excellent viscosity-increasing fluid loss reducer with certain lubricity and anti-salt and calcium and magnesium pollution. The ability is also strong. However, in use, it is found that the coating inhibitio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/56C08F220/06C08F220/58C08F2/24C08F4/40C08F4/04C09K8/035
Inventor 许苏林郭明贤周启亮茹阳胡树林方元纪
Owner 濮阳市诚信钻采助剂有限公司
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