Proceedings of the 6th New Zealand Geothermal Workshop 1985. Steam/water counterflow model of a vapour dominated geothermal reservoir with surface recharge and deep drainage. New Zealand Geothermal Workshop [7-9 Nov. 1984, New Zealand].

Jenson, David W.

[1984]

171
CIENA

0-86869-056-2

A two dimensional steam/water counterflow model of a vapour dominated geothermal reservoir has been developed. If liquid recharge is applied at the surface and deep drainage is available, a range of conditions can be established where natural chokes are formed in the reservoir. These chokes lead to a liquid dominated region overlying a vapour dominated region. The pressure (or depth) at which a chocke will form is controlled by a narrow range of surface conditions. A selection of vertical sections have been constructed which model a series of possible reservoir conditions. These range from natural surface activity where the vapour dominated region is close to the surface through to the boundary of the vapor reservoir at its intersection with deep liquid dominated conditions. An interesting feature of the model is that vapour dominated conditions can first form at a pressure of 33 Bars (abs). This phenomenon appears to be unrelated to the maximun enthalpy of steam condition which occurs at a similar pressure.

Presenta diagrs., gráfs. y tbls.

GENERAL; ENERGIA GEOTERMICA; INGENIERIA DE RESERVORIO; PRESION; VAPOR;