| Title | The Productive Feed Zones Identified Based on Spinner Data and Application in the Reservoir Potential Review of Kamojang Geothermal Area, Indonesia |
|---|---|
| Authors | M.Yustin Kamah, T. Dwikorianto, A.A. Zuhro, D. Sunaryo and A. Hasibuan |
| Year | 2005 |
| Conference | World Geothermal Congress |
| Keywords | Spinner, Productive Feed Zones, Geothermal Reservoir, Pertamina-Kamojang |
| Abstract | Spinner Logging is a tool that directly identifies flow rate at points in a borehole. It's closely correlated with the formation permeability. Spinner data are useful for prediction of reservoir productivity zones. Depletion curve of spinner informs the steam entry or steam loss in the reservoir zones. Spinner data of sixteen wells identify two major productive feed zones in the Kamojang geothermal Reservoir. Upper Feed zone (FZA) is at 700-800 masl elevation and lower feed zone (FZB) is at 100-500 masl elevation. At FZA, production wells are 60 - 65 tons/hour; at FZB, they are 75 - 80 tons/hour with the wellhead pressure of 15 Ksc. In the Kamojang Reservoir, the productive feed zones are distributed in the Western and Eastern blocks. The evaluation spinner data can be used for supporting make-up well prognosis and predicting the well output early, before the well completion. |