From Storage Potential to Storage Capacity - A Re-evaluation Method of 'Old' Well-logs

Carbon dioxide emitted worldwide as well as in Hungary is believed to contribute to climate change of our Planet. The increasing emission of greenhouse gases especially carbon dioxide imposes a significant climatic issue. Adequate alternative solutions have to be found on a limited time frame in order to answer the arising problems. Among all emission reduction methods CCS (carbon dioxide capture and geological sequestration) is the only available tool that can immediately produce dramatic cuts in carbon emissions, without drastically restructuring energy production. A major disadvantage however is the high cost of the activity. Therefore, all cost reducing opportunities must be exploited. The most direct way to obtain physical and geometric information about subsurface formations is using well bores. Information provided by the well-boring is indispensable in processing and interpretation of seismic data and determination of the exact geological setup of a formation. Therefore, well-log data of a given study area are of prime importance. We have developed a well-log re-interpretation method using old-paper based well-logs and tested the method on the most promising saline reservoir formation in Hungary to have a more accurate view of storage potential in Hungary.