Novel defoaming agent with strong foam-inhibiting capacity

A technology of defoaming agent and capacity, applied in the field of new defoaming agent, can solve the problem of poor defoaming effect, poor defoaming effect of defoaming agent, inability to adapt to various oil well cement slurry systems and application conditions, and few types of products, etc. problems, to achieve good anti-foaming ability, fast de-foaming, and easy-to-use effects

Inactive Publication Date: 2017-09-26
四川宏升石油技术开发有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is that the existing defoamers not only have poor defoaming effect, but also have too few product types, and cannot adapt to various oil well cement slurry systems and application conditions. A new type of defoamer, which solves the problem that the existing defoamer has poor defoaming effect and cannot adapt to various oil well cement slurry systems and application conditions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A novel defoamer with strong antifoaming ability of the present invention comprises the following components in parts by weight: 15 parts of mineral oil, 18 parts of methylcyclohexane, 7 parts of white carbon black, 13 parts of tributyl phosphate, compound 17 parts of emulsifier, 19 parts of organic bentonite, 21 parts of triacetin, 28 parts of water, 5 parts of triisobutyl phosphate. The composite emulsifier is a mixture of Span and Tween, and the theoretical HLB value of the emulsifier after mixing is 7-8.5. The complex emulsifier is a mixture of Span-60, Span-80 and Tween-60, and the mass ratio of Span-60, Span-80 and Tween-60 is 1:0.8~1.2:1.3 ~1.9. The mass ratio of Span-60, Span-80 and Tween-60 is 1:1.1:1.7.

[0021] The defoamer prepared in this example has a faster defoaming speed at high temperature and high stirring speed. Compared with the commonly used cement defoamer TIBP, the speed is faster than the existing 11.2%. Admixtures, such as early-strength age...

Embodiment 2

[0023] A novel defoamer with strong antifoaming ability of the present invention comprises the following components in parts by weight: 5 parts of mineral oil, 9 parts of methylcyclohexane, 2 parts of white carbon black, 3 parts of tributyl phosphate, compound 4 parts of emulsifier, 3 parts of organic bentonite, 4 parts of triacetin, 10 parts of water, 1 part of triisobutyl phosphate. The composite emulsifier is a mixture of Span and Tween, and the theoretical HLB value of the emulsifier after mixing is 7-8.5. The complex emulsifier is a mixture of Span-60, Span-80 and Tween-60, and the mass ratio of Span-60, Span-80 and Tween-60 is 1:0.8~1.2:1.3 ~1.9. The mass ratio of Span-60, Span-80 and Tween-60 is 1:1.1:1.7.

[0024] The components of this embodiment are outside the present invention, and the defoaming speed of the prepared defoaming agent is 1.2% slower than that of the existing defoaming agent at high temperature and high stirring speed. Agents, such as early-strengt...

Embodiment 3

[0026] A new type of defoamer with strong antifoaming ability, including the following components in parts by weight: 11-18 parts of mineral oil, 16-21 parts of methylcyclohexane, 4-9 parts of white carbon black, tributyl phosphate 7-16 parts, 11-19 parts of compound emulsifier, 13-21 parts of organic bentonite, 13-23 parts of glycerol triacetate, 23-31 parts of water, 3-9 parts of triisobutyl phosphate. The composite emulsifier is a mixture of Span and Tween, and the theoretical HLB value of the emulsifier after mixing is 7-8.5. The complex emulsifier is a mixture of Span-60, Span-80 and Tween-60, and the mass ratio of Span-60, Span-80 and Tween-60 is 1:0.8~1.2:1.3 ~1.9. The mass ratio of Span-60, Span-80 and Tween-60 is 0.8:1.2:2.3.

[0027] The components of this embodiment are outside the present invention, and the defoaming speed of the prepared defoaming agent is 8.4% faster than that of the existing defoaming agent at high temperature and high stirring speed. Agents,...

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PUM

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Abstract

The invention discloses a novel defoaming agent with strong foam-inhibiting capacity. The novel defoaming agent is prepared from the following ingredients in parts by weight: 11 to 18 parts of mineral oil, 16 to 21 parts of methyl cyclohexane, 4 to 9 parts of white carbon black, 7 to 16 parts of tributyl phosphate, 11 to 19 parts of compound emulsifier, 13 to 21 parts of organic bentonite, 13 to 23 parts of glycerol triacetate, 23 to 31 parts of water and 3 to 9 parts of tri-isobutyl phosphate.

Description

technical field [0001] The invention relates to the field of cement, in particular to a novel defoamer with strong antifoaming ability. Background technique [0002] In the process of oilfield cementing construction, in order to make the limited API standard cement types on the construction site meet the endless cementing conditions, it is necessary to add a variety of admixtures to the oil well cement slurry to improve the comprehensive performance of the cement slurry. When the oil well cement slurry with antifoaming agent is stirred at high speed, a large number of air bubbles will be generated. Such air bubbles have high viscosity and are easy to stay inside the slurry, which is difficult to eliminate with ordinary defoamers. Under continuous construction conditions, if the foam cannot be quickly defoamed, the measured density of the cement slurry will be significantly smaller than the real value, resulting in a decrease in the strength of the cement stone and the bondin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/42C09K8/467C04B103/50
CPCC04B40/0039C04B2103/50C09K8/467C04B24/00C04B22/06C04B24/425C04B24/003C04B24/045C04B24/085C04B24/32C04B24/36
Inventor 徐峰
Owner 四川宏升石油技术开发有限责任公司
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