The drilling activities in some parts of Asia and Russia 
were studied and analyzed and presented with 
emphasis on its problems and some solutions 
applied. In some of the wells drilled in the identified 
areas there is no apple to apple comparison in terms of 
weather, formation drillability, well design and 
equipment utilized. It is also worth mentioning that 
because of confidentiality of data in these companies 
conducting the drilling operation there is very limited 
information available. But for purposes of presentation 
it is endeavored in this material that all information is 
thoroughly explained to be able to share the 
experiences of geothermal drilling in these areas and 
come up with a recommendation in our effort to reduce 
geothermal drilling cost and contribute to the cost 
reduction objective of ENGINE in the application of EGS. 

The common problems in the Geothermal Drilling 
operation i.e. lost circulation, equipment failure, 
improper drilling practices, cementing problems, casing 
problems, logistical problems and all other geothermal 
drilling activity related problems will be dealt with based 
on what was experienced. Solutions applied 
to these problems will likewise be discussed.

Because drilling is a major component in the overall EGS 
activity it should be able to contribute to the cost 
reduction effort of ENGINE in order for the project 
to be successful and economical.

Grensasvegur 9
Reykjavik,
Iceland