In the process of oilfield drilling, drilling mud is a working fluid that plays the role of lubrication, cooling, arm guarding, transmission of drilling cuttings, and balancing the bottom pressure. When the drilling mud completes the corresponding mission, a large amount of waste mud will be produced, the main components are bentonite, drilling cuttings, water and a variety of chemical additives, due to the alkali, salt, oil and other pollutants contained, the treatment is difficult, the oily sewage is affected by various factors, easy to produce foam and accumulation, the orderly progress of the oilfield process is very unfavorable.
So, in the face of this blistering problem, how should we solve it? In fact, add a certainOilfield defoamer, the bubble can be eliminated and suppressed in time, and we can continue to look at the specific situation.
1. Characteristics of oilfield defoamer
Oilfield defoamer is a kind of organosilicon polyether grafted copolymer defoamer, which can quickly solve the foam problem caused by drilling mud and avoid adverse effects on the construction of oilfield process. Its main features include the following:
Wide range of applications:Oilfield defoamer can be widely used in oilfield drilling mud, mortar, mining, mineral processing, oil refining, coal mines, and can also be used for defoaming in oil-water separation process.
Chemically stable:Oilfield defoamer can play a good role in defoaming and foaming in the harsh environment of high temperature and strong acid and alkali, and will not easily appear stratification, demulsification, oil bleaching and other phenomena, nor will it have chemical reactions with other substances.
Strong defoaming and anti-foaming power:The defoaming speed of oilfield defoamer is fast and the foam inhibition time is long, which can dynamically eliminate all kinds of large bubbles and fine foams in the drilling mud, and the foam inhibition time is more than 48 hours.
Second, the use of oilfield defoamer
Oilfield defoamer can be added directly to the slurry kettle, and the amount used depends on the foam situation on site. It can also be added in batches, diluted and then added to give up the ideal defoaming effect.