The invention relates to an
oil well acidification flowback liquid treating technology and device for an offshore
oil field. The
oil well acidification flowback liquid treating technology comprises the steps that acidification flowback liquid discharged out of a well opening of a Christmas tree is decompressed and heated up; a demulsifying agent and a reverse demulsifying agent are added, and the acidification flowback liquid is fed into an efficient separator for separation of oil, gas, water and mud; separated oily
sewage is added with a
water treatment agent and then fed into an oil and water separator, water discharged out of the oil and water separator is added with a PH value modifier, enters a
pressure reactor to react and then enters a high-speed two-phase separating
machine for separation of mud and water, separated water is subjected to fine filtering, oil discharged out of the efficient separator is added with a demulsifying agent and a desulphurizing
reagent and then enters a
free water removing device for removal of water, oil discharged out of an oil-phase outlet passes through an
oil pump and a high-level intense demulsifying device and enters a high-speed three-phase separating
machine for removal of water and mud, and the discharged oil enters an offshore
oil production platform closed discharging
system through excess pressure of the high-speed three-phase separating
machine. According to the
oil well acidification flowback liquid treating technology and device, the treatment efficiency is high, occupied space is small, transport and hoisting are convenient between offshore platforms, and with the combination of an efficient
chemical agent, the acidification flowback liquid is quickly treated to reach the expected index.