Electric demulsification treatment method and device for super heavy oil SAGD (Steam Assisted Gravity Drainage) circulating produced liquid

• Main Authors: WU DIHUA, XIE SHANSHAN, SUN SEN, QIU JIANGYUAN, ZHU FENG, LI ZHAOQIANG, QI YAN, ALCLAN, ALINA, LIU YONG, XU CHUNQUAN, MA DAWEN
• Format: Patent
• Language: Chinese; English
• Published: 30.04.2024
• Subjects: CHEMISTRY; CRACKING HYDROCARBON OILS; FUELS; LUBRICANTS; METALLURGY; MINERAL WAXES; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; TECHNICAL GASES CONTAINING CARBON MONOXIDE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention relates to the technical field of oil and gas field sewage treatment, in particular to an electric demulsification treatment method and device for super heavy oil SAGD (Steam Assisted Gravity Drainage) circulating produced liquid. The SAGD circulating preheating produced liquid enters a primary electrochemical chamber to be subjected to electrochemical treatment, primary produced water is subjected to secondary electrochemical treatment, secondary produced water enters a scum removal tank, and oil at the upper part flows into a crude oil system, and the secondary electrochemical chamber comprises an SAGD water tank truck, a primary electrochemical chamber, a secondary electrochemical chamber and a scum removal tank; a produced liquid inlet pipeline is communicated between the SAGD water tank truck and the first-stage electrochemical chamber, a primary produced water communication pipeline is communicated between the first-stage electrochemical chamber and the second-stage electrochemical chamber