NTU, Izmir (Turkey) is a geothermal energy consulting firm whose partners had previously worked in Mineral Research and Exploration Directorate of Turkey (MTA), Universities, domestic and international projects for various areas of geothermal energy since 1970.
After liberalization of the energy market in Turkey, power generation rights to the private sector were granted, and Turkey's first private geothermal power plant Dora-I was installed in Salavatlı field under consultancy of NTU in 2004.
NTU's main areas of expertise extend from geoscience surveying (geology, geophysics, and geochemistry), drilling operations, well testing and evaluation, reservoir engineering, integrated resource management to conceptual geothermal power plant design. Numerous geothermal energy projects have been carried out by NTU conducting geoscientific surveys, planning and supervising drilling and stimulation operations, making 3D modeling of geothermal systems, estimating field power generation capacity, defining optimum exploitation strategy, scaling and corrosion prevention, pump selection, reservoir monitoring, numerical simulation, suitable power plant selection and due diligence studies.
Because of declining reservoir pressures in operating geothermal fields in recent years, and abundant availability of low temperature geothermal resources for power generation in Turkey, a need is arisen for artificial lift production methods. NTU had 20 years of experience in selecting suitable lifting methods such as electric submersible pumps (ESP), line-shaft pumps (LSP) and gas lift (gas-lift) applications.
In recent years, geothermal fields containing different levels of CO2 confront unfair financial and environmental problems. NTU has also been a pioneer in carbon dioxide injection projects. Determination of natural CO2 emissions and mapping of the CO2 emission to the surface and determination of the net CO2 output of geothermal power stations are also being developed.
Drilling rigs and equipment selection, suitable mud and cement compositions, and cement and cementing chemical additives, vertical and directional drilling planning by NTU have satisfied the needs of the projects. Over 200 geothermal wells with a depth of up to 5000 m and drilling over 400,000 m have been NTU planned and executed.
NTU has provided consultancy services for 20 installed geothermal power plants with 349.5 MWe of capacity in Turkey. Ongoing construction in Croatia and Turkey of further 76.5 MWe of power generation projects are at different stages.