Shaanxi cementing mud material manufacturer introduces defoamer

Cementing slurry is often added with a variety of admixtures, which can improve the performance of cement slurry. 

However, some admixtures have high surface activity and will produce stable bubbles during slurry preparation or 

pumping. Because the cement slurry system contains a lot of solid phase, high consistency, these bubbles are difficult

 to eliminate in a short time, resulting in the change of various performance parameters of the cement slurry, and even 

lead to cementing failure in serious cases. Therefore, it is suggested that when preparing cement slurry, it is necessary 

to add cementing mud defoamer to eliminate foam and improve cementing quality.

I. Overview of defoamer

It is a powder defoamer prepared by heating, cooling, dehydration and other processes of polyol and fatty acid under the 

action of catalyst, and then adding auxiliary agent. It has obvious anti-foam effect in cementing mud, salt resistance, calcium

 resistance, lubricating effect, no pollution to the environment, filling and other advantages. It does not have many drawbacks

 like traditional emulsion and solution defoamer.

Second, the use of defoamer

1. Determine the dosage

Different amounts of defoamer have different defoamer effects on bubbles, so it is necessary to determine the specific amount of

 defoamer according to the actual situation, such as the nature of cement slurry and the number of bubbles.

2. Add method

It can be added directly to the cement slurry and then mixed to stir well. To ensure uniform dispersion, can defoaming completely.

3. Check the defoaming effect

After adding for a period of time, it is necessary to check whether the number of bubbles in the cement slurry is reduced. If the number of 

bubbles does not decrease, the amountof defoamer needs to be re-adjusted.

It should be noted that the use of defoamer needs to be adjusted according to the actual situation. If the amount of defoaming agent is

 too much, it will affect the performance of cement slurry and even lead to cementing accidents.