Abstract
Carbon dioxide injection can improve the recovery rate of heavy oil and reduce the viscosity of heavy oil as well as reduce carbon emissions. However the downhole tubular material is very easy to react electrochemically with CO2 under high temperature and humid environment after CO2 injection, which causes strong corrosion to the downhole tubulars. For directional wells, it will further aggravate the tubular bias wear and cause a significant shortening of the pumping inspection cycle. Moreover production will decrease after a period of time CO2 throughput and re-injection of CO2 will be required. In this paper, we have developed a multi-round carbon injection and heavy oil production technology without moving the tubing column. Also the supporting tools match the technology is optimized and improved to achieve the goal of extending the operation cycle and saving cost.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
