Too much oilfield drilling foam? Come and experience the surprise of defoamer
The drilling mud method used in oilfield drilling is always accompanied by some harmful foams, which seriously affects the progress of the project.
How is foam generated during drilling?
01. When all kinds of gases in the formation overflow, a large amount of foam will be generated in the mud, and the surfactant component in the mud has a bubble stabilising effect, so it makes the foam generated by the mud circulate back into the well before it can be broken.
02. The decomposition of the treatment agent by high temperature or the gas generated by fermentation can also lead to the formation of foam.
03. In practice, a large amount of air is introduced into the mud by the mixing operation, which leads to the formation of foam.
Quality defoamer should have the conditions
Foam generated in the oilfield drilling process is not handled in a timely manner, and serious foaming will affect the mud pump's upstream efficiency and reduce the pump pressure, which will have an impact on the entire drilling project. In serious cases, it may even cause poisoning, fire and other dangers to the site operators. The role of defoamer in mud is to eliminate the bubbles generated in the drilling fluid, to achieve effective improvement of drilling efficiency and safety, in its physical and chemical properties should meet the following conditions:
01. The defoamer should have a lower surface tension than the foaming medium, be insoluble in the foaming medium, and be unaffected by the capacity-enhancing and degrading effects of the foaming system.
02. Antifoaming agent is inert to the foaming system, no chemical reaction, no side effects on the final product, does not affect product performance and appearance.
03. The defoaming agent meets the special conditions of the drilling process, such as pH and temperature requirements.
04. The antifoam agent is easy to use, easy to handle, has good storage stability, no deterioration in long-term storage, and is safe for human beings, animals and the natural environment.
The main role of defoamers in drilling muds
At present, in the oil drilling process, it is common to use defoamer or defoamer and mechanical defoaming combined method for defoaming treatment. The role of defoamer in drilling mud is mainly reflected in the following aspects:
01. Rapid elimination of foam in mud:
Defoamer can quickly and effectively eliminate foam in the mud, thus avoiding drilling problems caused by excessive foam.
02. Enhance oil and gas separation efficiency:
The defoamer can eliminate the thick foam during crude oil processing, thus enhancing the efficiency of oil and gas separation and ensuring that the purity of crude oil extraction is not affected.
03. Excellent chemical stability:
Antifoam agent can maintain stable performance in all kinds of complex chemical environments encountered in the drilling process, and continue to play the role of antifoam.
04. Good compatibility:
The antifoaming agent will not react with other components in the mud, and will not affect other properties of the mud, and at the same time, it will not adversely affect the drilling equipment and the underground environment.
05. Foam inhibition effect lasts:
The antifoam can remain in the foaming solution for dozens of hours without causing the solution to reappear to produce bubbles, thus ensuring the stability of the drilling process.
06. Strong permeability:
The defoamer can penetrate into every area of the foaming system such as drilling fluid, and achieve good foam removal effect in a short time.
Product Recommendation
In response to the foaming phenomenon of oilfield drilling process, RISE chemical capital deep R & D team and special product laboratory repeated experiments, according to the application field, the use of different needs, research and development and production, including modified polyether, modified silicone polyether, modified silicone resin and so on, a variety of oilfield industry defoamer series product line. It is especially suitable for maintaining antifoaming and foam inhibition performance under the conditions of high temperature, strong acid and alkali, high shear and high pressure. And it can be widely used in a wide range of temperatures for foam elimination and suppression of various harsh systems.
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