Vertical Closed Loop Systems
Ortman Drilling & Water Services’ multi-million dollar investment in drilling rigs gives it the capability to bore a wide variety of vertical holes to specific depths up to 600 feet or greater. With four geothermal rigs available and eight certified drillers on staff, projects can be completed in a timely fashion regardless of the project's size.
Our experienced drilling crews install all geothermal piping and grout materials per engineered specifications. Ortman Drilling & Water Services can provide thermal conductivity testing services to confirm formation conditions during the design phase of a project. In addition, we offer post-construction thermal conductivity testing to verify a solid thermal connection of completed loops.
Horizontal Closed Loop Systems
For horizontal closed loop systems, Ortman Drilling & Water Services can facilitate directional drilling and has equipment to complete any size excavation or trenching project. A horizontal closed loop field is composed of pipes that run horizontally in the ground. A long horizontal trench, deeper than the frost line, is dug and multiple U-shaped or "slinky coils" are placed horizontally inside the trench. Excavation costs for horizontal loop fields are less than the cost of vertical drilling, so this is a common layout used wherever there is adequate land available.
As an alternative to trenching, the horizontal loop field may be laid by horizontal directional drilling. This technique can lay piping under yards, driveways or other structures without disturbing them, with a cost between those of trenching and vertical drilling.