(AP) — New technology is helping increase the success of oil drilling in southwest Nebraska.

3D seismic surveys have helped with drilling in southern Hitchcock and Dundy counties. Oil exploration has taken place in the two counties since the 1960s, but local officials say the new drilling activity is unheard of in the area.

The technology helps find favorable drilling locations. Bill Sydow, director of the Nebraska Oil and Gas Conservation Commission, says the changes have taken place over the last four to five years.

Jim Gohl, a member of the commission, says at least six companies are now drilling in the two counties and on locations directly across the state line in Kansas. He says some of the resulting wells have proven lucrative.