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Carrier of active ingredient of defoaming agent and preparation method thereof

The technology of an active ingredient and a defoaming agent is applied to the carrier of the active ingredient of the defoaming agent and the field of preparation thereof, which can solve the problems of slow defoaming and poor dispersibility, and achieve the effects of convenient use, reduced stability and prevention of surface tension reduction.

Inactive Publication Date: 2010-09-15
濮阳市诚信钻采助剂有限公司
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a new carrier for the problems of poor dispersion and slow defoaming of aluminum stearate as a defoamer in water-based drilling fluids

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] The preparation method of the carrier of the active ingredient of the antifoaming agent comprises the following steps:

[0019] (1) Prepare 1000-2000 parts of vegetable fatty acid, 100-800 parts of methanol, and 50-250 parts of defluorescing agent for later use, in parts by weight;

[0020] (2) Add vegetable fatty acid into the reaction kettle, heat up to 50-180°C, react for 2-8 hours, then let it stand for 1-5 hours, and separate the water to obtain refined fatty acid;

[0021] (3) adding a defluorescing agent to the prepared refined fatty acid, keeping the temperature in the reaction kettle at 50-120°C for 3-10 hours, then standing for 1-5 hours, and separating the water to obtain the defluorescent refined fatty acid;

[0022] (4) Under the action of a catalyst, the defluorescent refined fatty acid and methanol are kept at a temperature of 50-120° C. to react for 3-20 hours, then stand for 1-5 hours, and obtain fatty acid methyl ester by water separation, which is Th...

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Abstract

The invention relates to a carrier of an active ingredient of a defoaming agent and a preparation method thereof. The carrier of the active ingredient of the defoaming agent is characterized by comprising the following components in part by weight: 1,000 to 2,000 parts of vegetable fatty acid and 100 to 800 parts of lower fatty alcohol. When in use, the carrier has no side effect on other performance of drilling fluid; the use amount is small; when the addition of the carrier reaches 0.2 percent, the density recovery ratio of the drilling fluid can reach over 98 percent; and the carrier is convenient to use and high in dissolving and dispersing speed and can be added into slurry directly.

Description

technical field [0001] The invention relates to a carrier of an effective component of a defoamer and a preparation method thereof. Background technique [0002] During the drilling process, if foam is generated in the drilling fluid, the density of the drilling fluid will decrease and the pressure of the fluid column will drop. If drilling encounters high-pressure oil and gas layers, it is prone to blowout accidents or the performance of drilling fluid is difficult to maintain, which is extremely unfavorable to drilling production. For example, when the gas in the formation is mixed into the drilling fluid system, the treatment agent in the drilling fluid is pyrolyzed at the bottom of the well, or when the lignosulfonate drilling fluid encounters the salt layer, foam may be generated. At this time, measures need to be taken for defoaming treatment. One of the most commonly used treatment methods is to add defoamers to the drilling fluid. [0003] At present, the defoamers...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/035
Inventor 许苏林郭金爱里金庆苑晓荣
Owner 濮阳市诚信钻采助剂有限公司
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