FremgangsmÕte ved hydraulisk frakturering av en underjordisk formasjon, samt en fraktureringsvµske for anvendelse ved utf°relse av fremgangsmÕten

摘要

Encapsulations comprised of a breaker enclosed within a membrane are utilized to break fluids used to fracture subterranean formations. The membrane of the encapsulation is permeable to at least one fluid in the subterranean formation or injected with the breaker such that the breaker diffuses through the membrane into the fracturing fluid. Thus, controlled amounts of breaker are released into the fracturing fluid.