Vol. 59 No. 1
January 2007
EOR/IOR
Reduced Well Spacing Combined With Polymer Flooding Improves Oil Recovery From Marginal Reservoirs
The full-length paper details laboratory studies of polymer-injection
parameters and project-design optimization. On the basis of these studies, a
pilot test combining close well spacing and polymer flooding was undertaken.
Well spacing was 100 m, zone thickness was less than 1 m, and permeability was
5 to 10 md. Both laboratory studies and pilot results show increased volumetric
sweep efficiency. The pilot test indicates that combining infill wells with
polymer flooding is economically feasible with 10% original-oil-in-place
incremental recovery at a production cost of U.S. $10/bbl.
View a Synopsis
of SPE 96946.
