Angus Energy said today it expected to be ready to produce oil from a new sidetrack well at its Brockham site in Surrey by this spring or summer.
Planners in the South Downs have demanded more information on the effects of plans to drill new wells and produce oil for 20 years.
The Environment Agency has objected to plans for 20 years of oil production at Markwells Wood in the South Downs National Park because of concerns about pollution of the chalk aquifer.
Plans for more drilling and testing at the exploratory oil site at Horse Hill, near Gatwick Airport, were published this morning.
People living near a proposed oil production site in the South Downs National Park voted almost unanimously last night against the scheme.
The company behind the Horse Hill oil well near Gatwick in Surrey has confirmed it will submit a new planning application for the site in the next few weeks.