Selection of a future geothermal drilling rig for Kenya

Abstract

The main objective of this report is to determine the technical specifications of a future geothermal drilling rig for Kenya. Analysis is made as a guide in the selection of the principal components of a geothermal drilling rig. It is planned that both vertical and directional wells with a 3000 m and 2500 m depth limit, respectively, will be drilled. International requests for information were floated to reputable rig manufacturers for comparison purposes to obtain their recommendations. The results obtained showed that a mast with a hook-load of 200 tons would suffice and optimum power input required to the mud pumps, rotary table (top drive) and drawworks is 746 kW of power each. A three diesel engine-generator set with a total output capacity of around 1.8 MW of electric power is sufficient for the planned drilling programme.