Title:

Proposed Empirical Gas Geothermometer Using a Multidimensional Approach

Authors:

Supranto, Sudjatmiko, B. Toha, D. Wintolo, I. Alhamid

Geo Location:

Lahendong, Indonesia; Sulawesi; Sibualbuali, Indonesia; Sumatra; Ringgit, Indonesia

Conference:

Stanford Geothermal Workshop

Year:

1996

Session:

Geology/Geochemistry

Language:

English

File Size:

307KB

View File:

Abstract:

Several formulas of surface gas geothermometer have been developed to utilize in geothermal exploration, i.e. by D'Amore and Panichi (1980) and by Darling and Talbot (1992). This paper presents an empirical gas geothermometer formula using multidimensional approach. The formula was derived from 37 selected chemical data of the 5 production wells from the Awibengkok Geothermal Volcanic Field in West Java. Seven components, Le., gas volume percentage, CO,, H2S, CH,; H,; N, and NH, from these data are utilize to developed three model equations which represent relationship between temperature and gas compositions. These formulas are then tested by several fumarolic chemical data from Sibual-buali Area (North Sumatera) and from Ringgit Area (South Sumatera). Preliminary result indicated that gas volume percentage, H,S and C02 concentrations have a significant role in term of gas geothermometer. Further verification is currently in progress.


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