Notice of RetractionStudy on Using the Water Alternating Gas Injection Technologic to Improve the Ultra Low Permeability Reservoir Recovery

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

To rationally develop low permeability reservoir, enhanced oil recovery, Changqing Oilfield launched a special low permeability oil field development studies. Based Changqing oilfield Yanhewan block this typical ultra-low permeability reservoir, use the numerical simulation method simulate the instability of water injection and gas injection alternating different effects of the development. The simulation results show that injection cycle in the early development of poor results, but the technique ultimately better results in the development of continuous injection; Gas-water cycle alternating six months of the development of better results in alternating cycles of three months, After the first injection of gas injection in better after the first injection of gas injection development effect, the study of the block for the rational development of a new approach.