Servicing Geothermal Wells During Completion and Follow-Up Monitoring

Abstract

Servicing geothermal production, injection and exploration wells at Iceland GeoSurvey begins with well siting and design. Siting and design are based on geophysical and geological investigations and measurements. To successfully drill and complete a geothermal well several factors have to be taken into account. Initially the contractor and the client (C&C) have to agree on what the criteria of success are and how to achieve them. After deciding on well design C&C have to select a fitting completion program for logging purposes. The geophysical logging implemented is chosen from a more or less standardized set of measuring programs with only slight variations as to what part of the well is to be logged during drilling. More than 20 specialists in the technical department and roughly 15 geologist, 6 logging trucks and some 60 tools are subject to careful planning as Iceland GeoSurvey undertakes 24-hour manning on drill-site, according to long-term schedules.
Monitoring measurements are not subject to the same strict manning schedule but in order to meet client requests swift and efficiently, slick-line trucks and manpower are also included in the aforementioned long-term schedules.