1.Biolithite loss zone is a kind of special reservoirs where rock structure is frailish and lot of pore spaces and gas exist, while severe circulation loss and well blowout and well kick occur.

1.礁灰岩漏失地层是一类弱,并含有大孔洞和气体地层,常常是严重井漏与天然气井喷井涌并存。