Notice of RetractionEconomic Evaluation of Rational Well Spacing Density of Daqing Chaoyanggou Low Permeability Oilfield

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.

According to the fact that starting up pressure gradient exists when fluids flow in low permeability reservoir, a concept called effective driving coefficient is introduced to this paper,the recovery ratio calculation formula of low permeability is proposed, and also the formula is revised by using the effective driving coefficient, on that basis, the authors establishes an economic evaluation model of rational well spacing density, taking the low permeability oilfield of Daqing Chaoyanggou as an example, this work carries out an economic evaluation of rational well spacing density considering the changing of oil price.