That would depend on the depth of waters, type of rig etc. A barge rig is the least expensive and can lease for as little as $30,000.00 per day. A jack up rig that works in waters up to 300’ can fetch $100,000–150,000 per day. A semi-submersible r What’s it cost to run an oil well for a year? I’ve been wondering about that. Million Dollar Way quotes some comments from a Google Discussion Group that gives some info: Monthly Costs For Maintaining An Active Well… Most companies estimate production costs at $6,000 to $8,000 per month per well…or $70,000 to $100,000 per year. How much does an oil rig cost? I know this varies widely but basically how much does a land rig and a sea rig cost? Answer Save. 13 Answers. Relevance. omalinur. Lv 4. 1 decade ago. Favorite Answer. Land Rig : 1.5 for an old scrap to more than 10 millions $ for a new one.