Three plugged water injection wells on the Heidrun oilfield off mid-Norway will be reopened over the next month , operator Den Norske Stats Oljeselskap AS ( Statoil ) said on Thursday .
<response> Three plugged water injection wells on the <location>Heidrun</location> oilfield off <misc>mid-Norway</misc> will be reopened over the next month , operator <organization>Den Norske Stats Oljeselskap AS</organization> ( <organization>Statoil</organization> ) said on Thursday . </response>