Geothermal Steam Production Fields

Geothermal wells need to undergo a test program before they are used. This is so that the baseline conditions of both the wells and the geothermal aquifers that they tap can be determined. This baseline data are critical because all future information is compared against them.

After drilling has been completed and before the initial discharge, the well downhole conditions are measured. The temperature and pressure are measured by using a clockwork Kuster gauge or electronic logging tools. Standard practice is to initially do an injection (or completion) test, that is, sometime at a series of flows, where the temperature, pressure, and possibly flows using a spinner tool are measured at intervals down the open hole section of the well. (more…)

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Geothermal Power Stations and Non Condensable Gas (NGC)

The total installed geothermal power generating capacity in the world is approximately 9000 MWe from 21 countries, with the United States leading at nearly 3000 MWe and The Philippines with nearly 2000 MWe (Table II). Other major countries are Italy, Mexico, Indonesia, Japan, and New Zealand, with between 400 and 800 MWe each. (more…)

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Geothermal Drilling for Investigating Geothermal Resource

Geothermal drilling technology is adapted from the oil industry. Most of the geothermal wells are drilled with a rotary-type drilling rig. Because of the hard, abrasive, and high-temperature volcanic rocks of geothermal systems, the drilling bits require hard abrasive resistant teeth such as diamond or tungsten carbide. Hence, geothermal drilling is an expensive activity in geothermal development. Most geothermal wells are drilled 1 to 2 km deep to intersect faults and fractures so as to increase the success rate of production from permeable zones. (more…)

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Commercial Development of Geothermal Power Projects: Private Sector & Independent Power Producers

In most countries, geothermal resources are classified as natural resources belonging to the government. Since the 1980s, there has been a worldwide trend to corporatize and/or privatize government commercial activities. Whereas the geothermal resources in the United States have been commercially developed by the private sector since the 1960s at The Geysers, other countries, notably The Philippines, Indonesia, and New Zealand, did not started private commercial geothermal projects until the 1980s. These private power developers are known as independent power producers (IPPs). There is a perception that the private sector is more efficient than the public sector. The efficiency arises from the increased flexibility of the private sector and its accessibility to commercial funding. (more…)

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High Enthalpy Geothermal Energy

“Spain has great potential but lack geothermal legislation and investment.” Besides being clean, renewable and friendly, easily manageable, which contributes to security of energy supply.

However, like other renewable energy sources, requires the development of sustainable energy technology push policies and efficient and environment economic support. (more…)

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Geothermal Energy, a Commitment to the Future

The Geologists Association president advocates the use of geothermal energy by its high durability and low maintenance. Besides a remarkable performance.

The president of the Association of Geologists, Luis Eugenio Suarez said, during the annual dinner of this organization held yesterday, (more…)

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Geothermal Energy as Renewable Energy

Mieres campus yesterday welcomed the conclusion of the technical conference on geothermal energy as alternative renewable energy. Experts call for use the geotermiaEl event, which was attended by a large audience, was held at the hall and was attended by numerous experts. The presentation began with a presentation from the Director General of Mines and Energy, Isaac Pola. (more…)

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Geothermal Energy-An Attractive Alternative Energy

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According to the German standard VDI 4640 geothermal energy is stored energy as heat beneath the Earth’s solid surface, encompasses the heat stored in rocks, soils and groundwater.

The main energy sources charge of the land are two: the first is the heat recovery of the Earth that can be assessed by the thermal gradient (variation of temperature versus depth), usually increase of 3.3 º C per 100 m depth. (more…)

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Geothermal Energy - Its Types and How It Works

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Geothermal energy is energy created by the heat of the Earth. Under the Earth’s crust lies a layer of thick, hot rock with occasional pockets of water. This water sometimes seeps up to the surface in the form of hot springs. Even where the water does not travel naturally to the Earth’s surface, it is sometimes possible to reach it by drilling. This hot water can be used as a virtually free source of renewable energy, either directly as hot water, steam, or heat or as a means of generating power. Geothermal energy as renewable energy is nonpolluting, inexpensive, and in most cases the sources is renewable. (more…)

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