API N90041

This annual report is the only long-term source of information on detailed U.S. drilling expenditures. The survey, conducted since 1959, presents information on wells, footage and related expenditures for each active drilling area. Data for oil wells, gas wells, and dry holes are reported separately and the information is further disaggregated by depth interval for each state and area. Similar summary tables are provided for the offshore and onshore areas. Also included in the report are sections on drilling expenditures for exploratory and development wells, horizontal wells and coal-bed methane gas wells. A comparison of the impact of price change on the drilling costs is also included.