Function and application of drilling defoamer
Drilling is one of the important processes in oil field production, so drilling fluid is an indispensable additive during production. It has multiple functions such as cooling the drill bit, cleaning the bottom of the well, and stabilizing the well wall. However, the drilling fluid is prone to air bubbles during use, which will not only reduce the performance of the drilling fluid, but also affect the efficiency and safety of drilling.
Therefore, the serious problem of foaming is usually solved by adding drilling defoamer during construction. The defoamer can have a good defoaming effect on the foam generated in the drilling system. Next, the editor will take you to understand What is the drilling defoamer:
1. The role of drilling defoamer
The main function of the drilling defoamer is to quickly dissipate the air bubbles by changing the surface tension in the drilling fluid. They accelerate the collapse and dissolution of air bubbles so that they no longer exist in the drilling fluid. Drilling defoamers are usually composed of organic surfactants, defoamers and stabilizers. Through the interaction of these components, air bubbles in drilling fluids are eliminated. Drilling defoamers are widely used
2. Benefits of Drilling Defoamer
①. During the drilling process, the performance and stability of the drilling fluid can be improved by using the defoamer. Eliminating air bubbles can reduce the density change of drilling fluid, improve cooling performance, and effectively reduce drill bit wear.
②. The defoamer can also reduce the amount of foam in the drilling fluid, avoid foam overflow, and keep the wellhead clean.
③. The defoamer can also reduce the risk of clogging downhole equipment caused by excessive air bubbles and improve drilling safety.
3. The use of drilling defoamer
Drilling defoamer can be directly added to the drilling fluid when it is used, or it can be added after dilution. However, when diluting, pay attention to the ratio of water to defoamer and control the concentration of defoamer to avoid excessive dilution. It doesn't work well. For different operation scenarios, the dosage of defoamer required is also different. Therefore, it is recommended that when using it, try to pass the sampling experiment of the foaming system before adding it to achieve the best effect.
