Results of Well Production Test for Olkaria Domes Field, Olkaria Kenya

Abstract

A total of 29 wells have been drilled in the Olkaria Domes area to supply steam for the 140 MWeOlkaria IV power plant. Production tests (discharge tests) were performed to obtain the discharge character of a well and to estimate its production capacity.

The wells were discharge tested using the lip pressure method. Well head pressure, lip pressure and water flow through the weir box were measured during the discharge tests. These well discharge parameters were then used in the calculation of total mass flow, steam fraction flow, water fraction flow, discharge enthalpy and power equivalent of steam.

Olkaria IV wells are high temperature two phase fluid wells with an average power equivalent of 7.1mwe totaling 205mwe which is capable of supporting a 140 mwe conventional power plant with surplus steam for well head generation.