Method of inhibiting lost circulation from a wellbore

摘要: Plugging of an underground void encountered during a well drilling operation which results in lost circulation problems is attained by injecting into the 2 streams fluids: one comprising particulate mineral substance suspended aqueous carrier liquid and other polymer substantially non-aqueous liquid. The types fluid are brought together at opening leading where materials, being supplemental to each other, form composition sets sticky, rubber-like plugging solid effective plug off flow from bore void. (5 claims)