method for blocking fluid flow through an underground formation path penetrated by a wellbore, and method for treating lost circulation in a wellbore, in an underground formation penetrated by a wellbore.

摘要

The present invention pertains to the use of mixtures of fibers and solid particles to cure fluid losses and lost circulation. A method involving such fibers and solid particles is disclosed. The mechanism for curing lost circulation and fluid losses is described in detail.