Intelligent Monitoring Technology of Production Parameters in CO2 Flooding Production Wells

Abstract CO2 flooding experiment is conducted on the old well after water flooding, without taking into account such designs as CO2 corrosion control and gas seal. There are more wellbore weak links. In order to meet the demand of the long-term safe CO2 flooding, safety risk assessment is required. Wellbore risk assessment process and evaluation template is established.. Integrated application of cementing quality detection, casing condition and annual pressure evaluation technology, safety risk assessment technology of CO2 flooding has formed and established wellbore risk assessment on CO2 flooding wells converted from water flooding mature wells. This technology has been widely applied in CO2 flooding test in Daqinzi, jilin oilfield, comprehensively evaluating safety condition of old wellbore, screening suitable CO2 flooding well and assessing annulus pressure condition of injection well to ensure the long-term safe CO2 flooding.