{HEAD ~ The enclosure member} is permeable to at least one fluid in the subterranean formation or injected with {TAIL ~ the capsules} such that upon sufficient exposure to the fluid, the capsules rupture, thereby releasing the breaker to the formation 
injected with
{ HEAD ~ The enclosure member } is permeable to at least one fluid in the subterranean formation or injected with { TAIL ~ the capsules } such that upon sufficient exposure to the fluid , the capsules rupture , thereby releasing the breaker to the formation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH