Potensi Cadangan Panas Bumi dengan Metoda Volumetrik Pada Sumur Saka-1 Lapangan Panas Bumi “X” Kabupaten Lembata NusaTenggara Timur

Secara geologi Indonesia berada di zona Sabuk Api atau busur vulkanik yang merupakan produk konvergensi berupa subduksi antara lempeng Samudra Hindia-Australia dengan lempeng benua Asia berdasarkan konsep Tektonik lempeng. Potensi Panas bumi Indonesia tercatat sebagai yang terbesar ketiga di dunia dengan potensi cadangan 40%, Direktorat Inventarisasi Sumber Daya Mineral (ESDM) mengidentifikasi 256 daerah panas bumi dengan total potensi mencapai atau sekira 28.617 MW Penggunaan potensi panas bumi Indonesia hingga Tahun 2016 baru mencapai 4% atau sekira 1341 MW sehingga masih perlu ditingkatkan. Target pemerintah tentang kebijakan Energi Nasional terkait penggunaan energi terbarukan sebesar 25% pada tahun 2015, memicu peningkatan kegiatan pencarian dan eksplorasi panas bumi.Penyelidikan Direktorat Inventarisasi ESDM (2006) di Kabupaten Lembata, Nusa Tenggara Timur mencatat tiga lapangan potensi panas bumi yakni : Atadei, Roma dan Adum. Sumber panas bumi umumnya berasosiasi dengan gunungapi menjelang padam maupun masih aktif. Syarat terbentuknya panas bumi adalah adanya sumber panas (magma), batuan reservoir, batuan penudung dan akuifer. Hasil inventarisasi dan eksplorasi. Tulisan ini difokuskan pada perhitungan cadangan yakni energi panas bumi yang kenyataannya dapat diambil dan potensi listrik yang dapat dibangkitkan pada lapangan panas bumi X Kabupaten Lembata, Nusa Tenggara Timur. Tahapan awal dari upaya untuk mengetahui potensi energi panas bumi dimulai dari eksplorasi terencana dan terpadu yang meliputi kegiatan survey geologi, geokimia, geofisika, landaian suhu dan pemboran uji/eksplorasi panas bumi yang diakhiri dengan kegiatan pemboran sumur produksi serta pembangkit power plant untuk listrik jika hasil pemboran uji memberikan gambaran yang positif serta faktor kebutuhan akan energi/listrik.Cadangan energi panas bumi yang kenyataannya dapat diambil di Lapangan panas bumi X adalah 3,94 x 10 11 KJ dan besarnya potensi listrik yang dapat dibangkitkan adalah sebesar 41 Mwe Sehingga Lapangan panas bumi X prospek dan layak untuk dikembangkan sebagai Pembangkit Listrik Tenaga Panas Bumi (PLTP), sehingga kebutuhan listrik masyarakat Kabupaten Lembata sebesar 5 Mwe dapat terpenuhi.Geologically, Indonesia is in the zone of ring of Fire or volcanic arc which is a product of convergence in the form of subduction between the Indian-Australian Ocean plate and the Asian continent plate based on the plate tectonic concept. Indonesia's geothermal potential is recorded as the third largest in the world with a potential reserve of 40%, the Directorate of Mineral Resources Inventory (ESDM) identified 256 geothermal areas with a total potential reaching or approximately 28,617 MW The use of Indonesia's geothermal potential until 2016 only reached 4% or approximately 1341 MW so that it still needs to be improved. The government's target of the National Energy policy related to the use of renewable energy by 25% in 2015, triggers an increase in geothermal exploration and exploration activities. The investigation of the ESDM Inventory Directorate (2006) in Lembata Regency, East Nusa Tenggara recorded three geothermal potential fields namely: Atadei, Roma and Adum. Geothermal sources are generally associated with near-extinguished volcanoes or are still active. Requirements for geothermal formation are the existence of heat sources (magma), reservoir rocks, capstone and aquifers. Inventory and exploration results. This paper is focused on the calculation of reserves, namely the fact that geothermal energy can be extracted and the potential electricity that can be generated in the geothermal of X field, Lembata Regency, East Nusa Tenggara. The initial stages of the effort to determine the potential for geothermal energy starts from planned and integrated exploration which includes geological, geochemical, geophysical surveying, temperature slope and geothermal test/ exploration drilling which ends with the production well drilling and power plant for electricity if the results test drilling provides a positive picture and energy/electricity demand factors. Reserve of geothermal energy which in fact can be taken in the geothermal field X is 3.94 x 1011 KJ and the amount of potential electricity that can be generated is 41 Mwe so that the geothermal of X field prospects and feasible to be developed as a Geothermal Power Plant (PLTP) so that the electricity needs of the Lembata Regency community of 5 MWe can be fulfilled.

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Indonesian Geothermal Energy Potential as Source of Alternative Energy Power Plant

KnE Energy ◽

10.18502/ken.v1i1.325 ◽

2015 ◽

Vol 1 (1) ◽

pp. 119 ◽

Cited By ~ 2

Author(s):

Puji Suharmanto ◽

Annisa Nor Fitria ◽

Sitti Ghaliyah

Keyword(s):

Power Plant ◽

Geothermal Energy ◽

Alternative Energy ◽

Electrical Energy ◽

Energy Potential ◽

Geothermal Power Plant ◽

Total Potential ◽

Geothermal Potential ◽

Volcanic Formation ◽

Geothermal Power

Indonesia is known as the Ring of Fire, nearly about 40% world's geothermal potential located in Indonesia. About 252 geothermal sites in Indonesia spread following the path of volcanic formation which stretches from Sumatra, Java, Nusa Tenggara, Sulawesi, to Maluku. It has total potential of about 27 GWe. Geothermal energy as a renewable energy and environmentally friendly, this large potential needs to be upgraded the contribution to fulfill domestic energy need which is able to reduce Indonesia's dependence on fossil energy sources which are depleting. Potential for geothermal energy is expected to fulfill the target of developing geothermal energy to generate electricity through the Geothermal Power Plant of 6000 MWe in 2020.Keywords: Geothermal Energy, Electrical Energy, Geothermal Power Plant

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Review State of Geothermal Energy in Iran

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.463-464.985 ◽

2012 ◽

Vol 463-464 ◽

pp. 985-989

Author(s):

Mohammad Reza Asadi ◽

Mahdi Moharrampour ◽

Masoumeh Shir Ali

Keyword(s):

Electric Power ◽

Geothermal Energy ◽

Resource Assessment ◽

Environmental Safety ◽

Geothermal Field ◽

Renewable Energies ◽

Nw Iran ◽

Geothermal Potential ◽

Review State ◽

Deep Exploration

International increasing of petroleum and living cost and population, environmental problems, diminishingly fossil sources and world trend to energy technology respect to environmental safety and renewable energies are some reasons for most countries to use and investigate on renewable energies. In this regard this paper presents the state of geothermal energy in Iran. The geothermal activities in Iran started by Ministry Energy of Iran in 1975, research and survey indicate that Iran has substantial geothermal potential, specifically in the Sabalan Sahand (NW-Iran) and Damavand (N-Iran) region that are considerate prospects for electric power generation and direct uses. The Electric Power Research Center (EPRC) and Renewable Energy Organization of Iran (SUNA) were established to justify priorities of above mentioned region. As a result: Meshkinshahr and Sarein area in Sabalan region were proposed for electric and direct use respectively. Three deep exploration wells and two shallow reinjection wells were drilled at the Meshkinshahr geothermal field during 2003/2004 following detailed geo-scientific surface surveys. A preliminary resource assessment confirms the presence of a medium grade geothermal resource with temperatures within the drilled area up to 2500C and whit at least 5 Km2 of commercially exploitable resource available. SUNA is now moving forward to construct and commission the first geothermal power development both in Iran and the Middle East.

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Seismicity time evolution and 3D/4D seismic tomography of Nesjavellir geothermal field (Iceland)

10.5194/egusphere-egu2020-8462 ◽

2020 ◽

Author(s):

Ortensia Amoroso ◽

Ferdinando Napolitano ◽

Vincenzo Convertito ◽

Raffaella De Matteis ◽

Paolo Capuano

Keyword(s):

Power Plant ◽

Seismic Tomography ◽

Geothermal Energy ◽

Clean Energy ◽

Velocity Model ◽

B Value ◽

Geothermal Field ◽

Hot Water ◽

Central Volcano ◽

4D Seismic

Nesjavellir Geothermal Field is located in the Northern part of the Hengill central volcano in South West Iceland. The Hengill volcanic complex consists of three smaller volcanic systems feeding several geothermal fields with surface manifestations.Geothermal energy is currently produced at two power plants, in Nesjavellir and in Hellisheidi. After an exploitation period started in 1947, the construction of Nesjaveillir power plant was completed in 1990. Nowadays it produces geothermal energy of up to 300 MW, which is 1,640 l/sec of hot water and up to 120 MW of electricity.Part of the surplus geothermal water from the plant goes into the injection wells and in analogy with the nearby Hellisheidi power plant the re-injection of geothermal gases into basaltic formations is planned. To this aim several tests of fluids deep injection are being conducted to prepare the experimental re-injection of carbon dioxide and hydrogen sulphide.In the framework of the H2020-Science4CleanEnergy project, S4CE, a multi-disciplinary project aimed at understanding the underlying physical mechanisms underpinning sub-surface geo-energy operations and to measure, control and mitigate their environmental risks, we investigate the seismicity evolution through the b-value and study the elastic properties of the propagation medium through the 3D/4D seismic tomography.The seismicity recorded in the study area is due to different mechanisms. Indeed, while in Hengill the seismicity is originated by volcano-tectonic processes, small earthquake swarms between Hengill and Grensdalur volcano are due to the geothermal activity. Finally, the seismicity in proximity of Hellishedi and Nesjaveiilir power plant appears to be induced by re-injection of waste water from the geothermal production.Seismic data are recorded by the Icelandic Meteorological Office (IMO) but also from Iceland GeoSurvey (&#205;SOR) and by the COSEISMIQ project. The production data are from the OR energy company.We used an iterative linearized delay-time inversion to estimate both the 3D P and S velocity models and earthquake locations. The velocity model is parametrized by trilinear interpolation on a 3D grid. The inversion starts from the 1D velocity model, optimized for the area. Time variations of the medium seismic properties are observed in term of Vp, Vs and Vp/Vs ratio obtained by 4D tomography. The technique consists in applying the 3D tomography at consecutive epochs. Spatial and temporal characteristics of the re-located earthquakes are then analysed by using the ZMAP code to image the b-value in the investigate volume.The images obtained for each epoch in terms of b-value, Vp and Vs velocities are then correlated with operational data.&#160;This work has been supported by S4CE ("Science for Clean Energy") project, funded from the European Union&#8217;s Horizon 2020 - R&I Framework Programme, under grant agreement No 764810 and by PRIN-2017 MATISSE project funded by Italian Ministry of Education and Research.

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Wellhead Power Plants Improvement by Introduction of Double Flashing Cycle

International Journal of Scientific Research in Science Engineering and Technology ◽

10.32628/ijsrset196311 ◽

2019 ◽

pp. 24-32

Author(s):

Thomas Mutero ◽

Peter Muchiri ◽

Nicholas Mariita

Keyword(s):

Power Plant ◽

Geothermal Energy ◽

Power Plants ◽

Low Pressure ◽

Geothermal Field ◽

Power Cycle ◽

Single Flash ◽

Geothermal Power ◽

Installed Capacity

Kenya Electricity Generating Company Ltd (KenGen) has harnessed geothermal energy for over thirty seven years at the Olkaria geothermal field. The total installed capacity of geothermal energy in Kenya currently stands at 703.5 MW generated mostly by single flash and binary geothermal power plants. In the 1990s KenGen considered the Wellheads concept in which modular containerized single flash power plants were to be designed, customized and built on a wellpad for optimized well potential; this approach has largely been successful currently having an installed capacity of 83.5 MW and accounting for 15.7% of KenGen's total geothermal installed capacity. This was done to address an inherent deficiency in the construction of conventional geothermal power plants which was identified as the long period taken to put up the power plants. The wells that have been drilled by KenGen and GDC, tested and shut in awaiting the installation of power plants are rated at about 600 MW. The Wellhead power plant cycle is a single flash geothermal power plant; this research intended to improve the current Wellheads power cycle by introducing a second low pressure separator to harness more energy from the wellheads, design a turbine to be driven by the low pressure steam and evaluate an economic justification for introducing the double flashing cycle. A case study was carried out at Wellhead 914 and Wellhead 915. Data collected indicated that the combined mass flow rate of brine from wells in the two wellpads was 240.4 tonne per hour. This brine was saturated at 13.5 bar-a and at a temperature of 193.40C as it exits the high pressure separator for disposal. The optimal pressure of the low pressure separation was designed at 2.5 bar-a, 127.40C and had an ability to generate 3871 kW of electric power. A turbine operating at a steam inlet pressure of 2.5 bar-a, a speed of 6804 rpm and having an exhaust pressure of 0.075 bar-a was designed. The designed turbine had 4 stages of both stationary and moving blades with a maximum rotor disc diameter of 0.62 meters and an output of 4195 kW. The simple payback period for this project was estimated to be 1.9 years with a rate of return on investment of 42.24%. This would also minimize energy wastage by improving efficiency and footprints on the environment arising from the Wellhead power plants.

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Late Permian carbonate concretions in the marine siliciclastic sediments of the Ravnefjeld Formation, East Greenland

Geological Survey of Denmark and Greenland Bulletin ◽

10.34194/ggub.v191.5140 ◽

2002 ◽

pp. 126-132

Author(s):

Jesper Kresten Nielsen ◽

Nils-Martin Hanken

Keyword(s):

Mineral Resources ◽

Sedimentary Basins ◽

Sedimentary Facies ◽

Carbonate Reservoir ◽

Upper Permian ◽

Late Permian ◽

East Greenland ◽

Reservoir Rocks ◽

Carbonate Concretions ◽

Siliciclastic Sediments

NOTE: This article was published in a former series of GEUS Bulletin. Please use the original series name when citing this article, for example: Kresten Nielsen, J., & Hanken, N.-M. (2002). Late Permian carbonate concretions in the marine siliciclastic sediments of the Ravnefjeld Formation, East Greenland. Geology of Greenland Survey Bulletin, 191, 126-132. https://doi.org/10.34194/ggub.v191.5140 _______________ This investigation of carbonate concretions from the Late Permian Ravnefjeld Formation in East Greenland forms part of the multi-disciplinary research project Resources of the sedimentary basins of North and East Greenland (TUPOLAR; Stemmerik et al. 1996, 1999). The TUPOLAR project focuses on investigations and evaluation of potential hydrocarbon and mineral resources of the Upper Permian – Mesozoic sedimentary basins. In this context, the Upper Permian Ravnefjeld Formation occupies a pivotal position because it contains local mineralisations and has source rock potential for hydrocarbons adjacent to potential carbonate reservoir rocks of the partly time-equivalent Wegener Halvø Formation (Harpøth et al. 1986; Surlyk et al. 1986; Stemmerik et al. 1998; Pedersen & Stendal 2000). A better understanding of the sedimentary facies and diagenesis of the Ravnefjeld Formation is therefore crucial for an evaluation of the economic potential of East Greenland.

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NMR contribution in sub-horizontal well for porosity-permeability heterogeneity characterization in limestones: implications for 3D reservoir prediction and flow simulation in a world class geothermal aquifer

10.5194/egusphere-egu21-1101 ◽

2021 ◽

Author(s):

Maxime Catinat ◽

Benjamin Brigaud ◽

Marc Fleury ◽

Miklos Antics ◽

Pierre Ungemach ◽

...

Keyword(s):

Geothermal Energy ◽

Horizontal Well ◽

Gamma Ray ◽

Flow Simulation ◽

High Density ◽

Reservoir Prediction ◽

Nmr Data ◽

Geothermal Potential ◽

Facies Associations ◽

Deep Geothermal Energy

With around 50 heating networks today operating, the aera around Paris is the European region which concentrates the most heating network production units in terms of deep geothermal energy. In France, the energy-climate strategy plans to produce 6.4TWh in 2023, compared to 1.5TWh produced in 2016. Despite an exceptional geothermal potential, the current average development rate of 70MWh/year will not allow this objective to be achieved, it would be necessary to reach a rate of 6 to 10 times higher. The optimization of the use of deep geothermal energy is a major challenge for France, and in Ile-de-France, which has a population of nearly 12 million inhabitants. This project aims to reconstruct and simulate heat flows in the Paris Basin using an innovative methodology (1) to characterize, predict and model the properties of reservoirs (facies, porosity, permeability) and (2) simulate future circulations and predict the performance at a given location (sedimentary basin) on its geothermal potential. This study focuses on a high density area of well infrastructures around Cachan, (8 doublets, 1 triplet in 56 km2). A new sub-horizontal doublet concept has been recently (2017) drilled at Cachan to enhance heat exchange in medium to low permeability formations. Nuclear Magnetic Resonance (NMR T2) logs have been recorded in the sub-horizontal well (GCAH2) providing information on pore size distribution and permeability. We integrated all logging data (gamma ray, density, resistivity, sonic, NRM T2) of the 19 wells in the area and 120 thin section observations from cuttings to derive a combined electrofacies-sedimentary facies description. A total of 10 facies is grouped into 5 facies associations coded in all the 19 wells according to depths and 10 3rd order stratigraphic sequences are recognized. The cell size of the 3D grid was set to 50 m x 50 m for the XY dimensions. The Z-size depends on the thickness of the sub-zones, averaging 5 m. The resulting 3D grid is composed of a total of nearly 8.105cells. After upscaled, facies and stratigraphic surfaces are used to create a reliable model using the &#8220;Truncated Gaussian With Trends&#8221; algorithm. The petrophysical distribution &#8220;Gaussian Random Function Simulation&#8221; is used to populate the entire grid with properties, included 2000 NMR data, considering each facies independently. The best reservoir is mainly located in the shoal deposits oolitic grainstones with average porosity of 12.5% and permeability of 100 mD. Finally, hydrodynamic and thermal simulations have been performed using Pumaflow to give information on the potential risk of interference between the doublets in the area and advices are given in the well trajectory to optimize the connectivity and the lifetime of the system. NMR data, especially permeability, allow to greater improve the simulations, defining time probabilities of thermal breakthrough in an area of high density wells.

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Oil and Gas Drilling Optimization Technologies Applied Successfully to Unconventional Geothermal Well Drilling

10.2118/205965-ms ◽

2021 ◽

Author(s):

Junichi Sugiura ◽

Ramon Lopez ◽

Francisco Borjas ◽

Steve Jones ◽

John McLennan ◽

...

Keyword(s):

Geothermal Energy ◽

Oil And Gas ◽

Optimization Techniques ◽

Geothermal System ◽

Well Drilling ◽

Geothermal Well ◽

Gas Drilling ◽

Drilling Tools ◽

Drilling Optimization ◽

Oil And Gas Drilling

Abstract Geothermal energy is used in more than 20 countries worldwide and is a clean, reliable, and relatively available energy source. Nevertheless, to make geothermal energy available anywhere in the world, technical and economic challenges need to be addressed. Drilling especially is a technical challenge and comprises a significant part of the geothermal development cost. An enhanced geothermal system (EGS) is a commercially viable thermal reservoir where two wells are interconnected by some form of hydraulic stimulation. In a commercial setting, fluid is injected into this hot rock and passes between wells through a network of natural and induced fractures to transport heat to the surface system for electricity generation. To construct EGS wells, vertical and directional drilling is necessary with purpose-built drilling and steering equipment. This is an application where oil-and-gas drilling tools and techniques can be applied. A recent well, 16A(78)-32, drilled as part of the US Department of Energy's (DOE's) Utah Frontier Observatory for Research in Geothermal Energy (FORGE) program, highlights some of the technical challenges, which include drilling an accurate vertical section, a curve section, and a 5300-ft 65° tangent section in a hard granitic formation at temperatures up to 450°F (232°C). Extensive downhole temperature simulations were performed to select fit-for-purpose drilling equipment such as purely mechanical vertical drilling tools, instrumented steerable downhole motors, measurement-while-drilling (MWD) tools, and embedded high-frequency drilling dynamics recorders. Downhole and surface drilling dynamics data were used to fine- tune bit design and motor power section selection and continuously improve the durability of equipment, drilling efficiency, and footage drilled. Drilling optimization techniques used in oil and gas settings were successfully applied to this well, including analysis of data from drilling dynamics sensors embedded in the steerable motors and vertical drilling tools, surface surveillance of mechanical specific energy (MSE), and adopting a drilling parameter roadmap to improve drilling efficiency to minimize drilling dysfunctions and equipment damages. Through drilling optimization practices, the instrumented steerable motors with proper bit selections were able to drill more than 40 ft/hr on average, doubling the rate of penetration (ROP), footage, and run length experienced in previous granite wells. This paper presents a case study in which cutting-edge oil-and-gas drilling technologies were successfully applied to reduce the geothermal well drilling time by approximately half.

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Techno-Economic Simulation of a Geothermal Energy Generation System at the Machin Volcano in Colombia

10.48011/sbse.v1i1.2431 ◽

2020 ◽

Author(s):

Hernando Enrique Rodriguez Pantano ◽

Valentina Betancourt ◽

Juan S. Solís-Chaves ◽

C. M. Rocha-Osorio

Keyword(s):

Geothermal Energy ◽

Energy Generation ◽

Generation System ◽

Energy Potential ◽

Public And Private ◽

Mountain Ranges ◽

Cost Of Energy ◽

Geothermal Potential ◽

Economic Simulation ◽

Private Investors

Colombian geothermal potential for power generation is interesting due to the presence of the three Andean mountain ranges and the existence of active volcanoes in junction with springs and underground reservoirs with the consequent closeness of available hydrothermal water-wells. The Machin volcano is a small mountain placed in the middle of the country, that has a considerable geothermal potential with wells in a temperature range of 160 to 260C. For that reason, a techno-economic simulation for a Geothermal Energy Generation System is proposed in this paper, using for that the System Advisor Model software. The purpose of this research is to present a more encouraging picture for public and private investors interested in exploiting this energy potential in Colombia. Simulation results include technical and economic aspects as annual and monthly energy production, geothermal resource monthly average temperature, and the Time Of Delivery Factors are also considered. Some tables with system configuration, plant and pump costs, Capacity Factor, and real and nominal Levelized Cost of Energy are also shown.

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The application of VOI method to shape a strategy of additional exploration

PROneft’ Proffessional’no o nefti ◽

10.51890/2587-7399-2021-6-3-61-70 ◽

2021 ◽

Vol 6 (3) ◽

pp. 61-70

Author(s):

Konstantin S. Grigoryev ◽

Andrey V. Roshchin ◽

Kseniya S. Telnova ◽

Rinat M. Valiev ◽

Alexey M. Stolnikov ◽

...

Keyword(s):

Probabilistic Models ◽

Optimal Placement ◽

Well Drilling ◽

Exploration Strategy ◽

Geological Modelling ◽

Information Method ◽

Exploration Drilling ◽

Early Exploration ◽

Necessary And Sufficient ◽

Exploration Well

Background. An optimal exploration strategy creates a significant share in value of project on exploration stage. The paper describes an example of solving the following tasks: determining the feasibility of additional exploration drilling; evaluating the value of drilling of one or more exploration wells; determining the optimal placement for exploration wells and drilling order. Authors presenting the modification of VoI (Value of Information) method and its application. Materials and methods. Complex probabilistic models were created summarizing main uncertainties and limitations, both geological, technical and technological. At the first stage three equiprobable geological concepts were made. For each concept probabilistic geological modelling was proceeded and then realizations corresponding to values of reserves P10, P50, and P90 were selected. Further, detailed production forecasts and economic estimates were performed. The analysis used the well pad and the corresponding area for exploration drilling as a unit of calculation. In the article the authors introduced the concept of remaining uncertainty. Application of modified VoI method allowed to form ‘dynamic’ (i.e. depending on exploration wells drilling order) range of areas for additional exploration which provide the best decrease of remaining uncertainty. An additional exploration strategy has been formed, which includes the necessary and sufficient number of wells and their drilling order. A decision tree was created depending on the success or failure of each subsequent exploration well. Results. The use of the modified VoI approach made it possible to achieve the objectives and obtain economical estimates, all of which combined to facilitate the adoption of decisions. As a result, a program for two exploration well drilling was created which would reduce the uncertainty by 90% from its initial value. Conclusions: The adopted VoI method could be applied to fields at the stage of additional exploration as well as to fields at early exploration stage to develop an exploration drilling strategy.

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Feasibility study and energy efficiency estimation of geothermal power station based on medium enthalpy water

Thermal Science ◽

10.2298/tsci0703135b ◽

2007 ◽

Vol 11 (3) ◽

pp. 135-142 ◽

Cited By ~ 2

Author(s):

Aleksandra Borsukiewicz-Gozdur ◽

Wladyslaw Nowak

Keyword(s):

Energy Efficiency ◽

Power Plant ◽

Geothermal Energy ◽

Geothermal Water ◽

Power Station ◽

Efficient Utilization ◽

Geothermal Power Plant ◽

Geothermal Power Station ◽

Efficiency Estimation ◽

Geothermal Power

In the work presented are the results of investigations regarding the effectiveness of operation of power plant fed by geothermal water with the flow rate of 100, 150, and 200 m3/h and temperatures of 70, 80, and 90 ?C, i. e. geothermal water with the parameters available in some towns of West Pomeranian region as well as in Stargard Szczecinski (86.4 ?C), Poland. The results of calculations regard the system of geothermal power plant with possibility of utilization of heat for technological purposes. Analyzed are possibilities of application of different working fluids with respect to the most efficient utilization of geothermal energy. .

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