Title:

Modeling and Forecast of the Exploitation the Pauzhetsky Geothermal Field, Kamchatka, Russia

Authors:

A.V. Kiryukhin, N.P. Asaulova, T.V. Rychkova, N.V.Obora, Y.F.Manukhin, L.A. Vorozheikina

Key Words:

Pauzhetsky, TOUGH2, iTOUGH2

Geo Location:

Pauzhetsky, Russia; Kamchatka

Conference:

Stanford Geothermal Workshop

Year:

2007

Session:

Modeling

Language:

English

File Size:

369KB

View File:

Abstract:

3D numerical model generated based on conceptual hydrogeological model of the Pauzhetsky geothermal field. Numerical model cover 4 * 5 km2 and include three layers: (1) base layer with feeding channels; (2) hydrothermal reservoir; (3) upper layer with discharge and rechargeinfiltration windows. TOUGH2iTOUGH2 based numerical model of the Pauzhetsky geothermal field calibrated on natural state and 1960-2006 exploitation data. Five principal unknown model parameters such as hydrothermal reservoir fracture permeability and fracture porosity, initial natural upflow rate, base layer porosity, permeabilities of infiltration windows were estimated. Heat and mass balances derived from the model explain the sources of exploitation reserves. Numerical model used for the next 25 year forecast of the enthalpy of production wells and reservoir pressure at constant extraction rate. Modeling forecast for the next 25 year at specified WHP of nine existing production wells and four additional wells confirm possibility of sustainable average steam production at level 28.9 ??/?, that is sufficient to maintain 6.8 MWe of Pauzhetsky Power Plant.


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