Method of hydraulic fracture of subterranean formation.

摘要

A first zone (I) of a subterranean formation is hydraulically fractured with a first fluid (A), and an adjacent second zone (II), with a second fluid (B) which preferably is chemically reactive with the first fluid to produce a precipitate or gel upon contact therewith. Preferably, the fluids are separated from one another in the wellbore (4) and are pumped into their respective zones at approximately the same rate so that they spread radially outward from the wellbore into the formation. Upon contact, the two fluids preferably react with one another to form a precipitate or gel at the interface between the two zones, thereby arresting further fracture propagation between the zones. <IMAGE>