Definition: Microhole Array

From Open Energy Information


Microhole Array

Microholes are among the smallest boreholes that can currently be drilled for geothermal reservoir development, with diameters of <4”. Microhole arrays are drilled as a completion technique during EGS reservoir development, and are not meant to replace the vertical primary wellbores drilled using traditional techniques. A directional array is drilled from the primary wellbore in order to intersect natural or induced fractures in the reservoir, allowing fluids to access more surface area for more efficient heat mining of the geothermal resource.[1]

  1. Microhole Arrays Drilled With Advanced Abrasive Slurry Jet Technology To Efficiently Exploit Enhanced Geothermal Systems