How to judge a mud cake excellent one or not ?

During the drilling, the fluid loss play an important roles in the drilling progress. However, whether the mud cake is good, that affects the fluid loss test result. the thicker the mud cake, the larger the fluid loss; the thinner the mud cake, the lower the fluid loss. Because the thin mud cake have good permeability. They can control effectively the fluid loss value. The permeability of mud cake is a determinative factor for controlling fluid loss value.

General, the penetration rate of mud cake is smaller than that the underlying. The penetration rate of general coalescence is 10 -5 um; The penetration rate of untreated drilling fluid is 10 -6 um; The penetration rate of drilling fluid with drilling additives is 10 -7 um.

To control fluid loss value, this is necessary that add the chemicals on the drilling fluid mud. Like sulfonated asphalt, gilsonate, That additives can control the fluid loss value effictively.

Xinxiang Kolanky focuses on oilfield drilling fluid chemicals, if you have any questions, please feel free to contact us.