Evaluation of direct-use-project drilling costs

This study evaluates drilling and completion costs from eleven low-to-moderate temperature geothermal projects carried out under the Program Opportunity Notice (PON) and User-Coupled Confirmation Drilling Programs. Several studies have evaluated geothermal drilling costs, particularly with respect to high-temperature-system drilling costs. This study evaluates drilling costs and individual cost elements for low-to-moderate temperature projects. It considers the effect of drilling depth, rock types, remoteness of location, rig size, and unique operating and subsurface conditions on the total drilling cost. This detailed evaluation should provide the investor in direct-use projects with approximate cost projections by which the economics of such projects can be evaluated.