Oilfield cementing is not only an important link in the process of oil and gas well construction, but also a relatively independent system engineering connecting drilling and production engineering. Cementing operation can be divided into casing old well, liner cementing, squeezing cementing and plugging cementing. In the process of well cementation, a lot of bubbles often occur, which seriously damage the quality of cementing, and easily lead to a series of accidents such as blowout, sticking, collapse and leakage. At this time, oil well defoamer should be used (including phosphate defoamer ZOC-X60L, resin cement defoamer ZOC-X62L, silicone cementing defoamer ZOC-X63L and latex cement slurry defoamer ZOC-X66L). To eliminate foam and improve cementing quality.

After years of research and development, Qingdao zoranoc oilfield chemical company has produced a series of cementing defoamers: phosphoric acid cementing defoamer ZOC-X60L, resin cementing defoamer ZOC-X62L, silicone cementing defoamer ZOC-X63L and latex cement slurry system defoamer ZOC-X66L, which are mainly composed of organic hydroxyl compounds, silica, special synergist and dispersant. It has clear effect on eliminating stubborn small foams in operation and has good defoaming, antifoaming and degassing effects. It can ensure the well cementing of oil field.