The Experts below are selected from a list of 228 Experts worldwide ranked by ideXlab platform

Sadiq J Zarrouk - One of the best experts on this subject based on the ideXlab platform.

  • Geothermal Resource and reserve assessment methodology overview analysis and future directions
    Renewable & Sustainable Energy Reviews, 2020
    Co-Authors: Anthony E Ciriaco, Sadiq J Zarrouk, Golbon Zakeri
    Abstract:

    Abstract Resource assessment and reserve estimation play a crucial role in the decision-making, financing, development, and operation of Geothermal projects. The present study critically examines all existing Resource assessment methodology and practices when quantifying power potential of Geothermal fields. The potential generating capacity of Geothermal projects at the early stage of development, where there is limited information about the Resource, is typically estimated using the volumetric method. Sustainable operation and management of existing Geothermal fields, on the other hand, rely on developing and updating a calibrated numerical reservoir model. To-date, the volumetric method and reservoir simulation remain the most appropriate tools to use for Geothermal Resource assessment. The former method is the recommended approach for projects that are still at the early stage of development, while the latter technique is for predicting sustainable production capacity after exploration drilling. However, building a numerical model for a project at the early due diligence stage is also useful and can complement the volumetric method. Most studies of Resource assessment methodologies highlight the difficulty of obtaining accurate, predictable generating output potential. Quantification of uncertainty in predictable output is carried out using the Monte Carlo method. This review demonstrates that the probabilistic assessment using Experimental Design (ED) and Response Surface Methodology (RSM) is a more promising technique that can be easier and quicker to implement.

  • Geothermal Resource assessment using experimental design and response surface methods the ngatamariki Geothermal field new zealand
    Renewable Energy, 2018
    Co-Authors: Jaime Quinao, Sadiq J Zarrouk
    Abstract:

    Numerical reservoir simulation is becoming prevalent in Geothermal Resource assessment. However, the uncertainties in Geothermal reservoir model inputs and Resource assessment outputs are not fully captured in these evaluations. On one hand, sensitivity analysis or one-factor-at-a-time (OFAT) scenario evaluations would not test the model enough to describe the uncertainty but on the other hand, thousands of scenario evaluations to approximate a probabilistic Resource assessment will require prohibitively large computing capability. To solve this, the Experimental Design and Response Surface Methods (ED and RSM) workflow is applied. The workflow results in a probabilistic Geothermal Resource assessment using a response surface derived from the minimum required number of designed reservoir simulation runs. The numerical reservoir model of the Ngatamariki Geothermal field, New Zealand was used as a case study. The workflow was used to (1) provide a systematic way of building multiple versions of the Ngatamariki reservoir model through designed experiments, (2) assess the effects of uncertain parameters and scenarios to the Resource assessment, and (3) use the results from the designed experiment simulation runs to fit a response surface or proxy model. The proxy model (polynomial) is used as the mathematical model in the Monte Carlo simulation to generate the probabilistic Geothermal Resource capacity.

Yangsheng Zhao - One of the best experts on this subject based on the ideXlab platform.

  • forecast and evaluation of hot dry rock Geothermal Resource in china
    Renewable Energy, 2005
    Co-Authors: Yangsheng Zhao, Jianrong Kang
    Abstract:

    Utilizing information from plate tectonics characteristics, volcanic activities, and Geothermal anomaly, this paper identifies areas where hot dry rock (HDR) may exist as potential Geothermal Resource in China. Further investigations are also carried out in the paper based on results from regional tectonics, volcanic geology and lithology, as well as data from Geothermal displays, geochemistry, geophysics, and shallow borehole temperature measurements. The study reveals several promising areas of HDR Geothermal Resource in China, including Tengchong of Yunnan province, Qiongbei of Hainan province, Changbaishan of Jilin province, Wudalianchi of Heilongjiang province, and the Southern Tibet area. A 3D static heat conduction model was developed to study the underground temperature gradient characteristics of the Rehai Geothermal field in Tengchong and the Yangbajing Geothermal field in Tibet. The model adopted is a geological block 10km deep from the ground surface and 50km wide in each of the horizontal directions (2500km2 area). The numerical simulation results in evaluations on the quantities of the HDR Geothermal Resource in Rehai and Yangbajing Geothermal fields. The paper shows that there is abundant HDR Geothermal Resource with large exploitation value in China. If developed with a power capacity of 1×108kW, the Rehai and Yangbajing fields along would be able to generate electricity for 1560 years.

Mark E Conrad - One of the best experts on this subject based on the ideXlab platform.

  • cluster analysis as a tool for evaluating the exploration potential of known Geothermal Resource areas
    Geothermics, 2018
    Co-Authors: Cary R Lindsey, Thomas R. Wood, Ghanashyam Neupane, Nicolas Spycher, Jerry P Fairley, Patrick F Dobson, Travis L Mcling, Mark E Conrad
    Abstract:

    Abstract Although many Known Geothermal Resource Areas in Oregon and Idaho were identified during the 1970s and 1980s, few were subsequently developed commercially. Because of advances in power plant design and energy conversion efficiency since the 1980s, some previously identified KGRAs may now be economically viable prospects. Unfortunately, available characterization data vary widely in accuracy, precision, and granularity, making assessments problematic. Here we suggest a procedure for comparing test areas against proven Resources using Principal Component Analysis and cluster identification. The result is a low-cost tool for evaluating potential exploration targets using uncertain or incomplete data.

Katsuaki Koike - One of the best experts on this subject based on the ideXlab platform.

Thomas R. Wood - One of the best experts on this subject based on the ideXlab platform.

  • cluster analysis as a tool for evaluating the exploration potential of known Geothermal Resource areas
    Geothermics, 2018
    Co-Authors: Cary R Lindsey, Thomas R. Wood, Ghanashyam Neupane, Nicolas Spycher, Jerry P Fairley, Patrick F Dobson, Travis L Mcling, Mark E Conrad
    Abstract:

    Abstract Although many Known Geothermal Resource Areas in Oregon and Idaho were identified during the 1970s and 1980s, few were subsequently developed commercially. Because of advances in power plant design and energy conversion efficiency since the 1980s, some previously identified KGRAs may now be economically viable prospects. Unfortunately, available characterization data vary widely in accuracy, precision, and granularity, making assessments problematic. Here we suggest a procedure for comparing test areas against proven Resources using Principal Component Analysis and cluster identification. The result is a low-cost tool for evaluating potential exploration targets using uncertain or incomplete data.

  • American Recovery and Reinvestment Act (ARRA) FEMP Technical Assistance for Geothermal Resource Evaluation Projects
    2010
    Co-Authors: Robert P. Breckenridge, Thomas R. Wood, Joel Renner
    Abstract:

    The purpose of this document is to report on the evaluation of Geothermal Resource potential on and around three different United States (U. S.) Air Force Bases (AFBs): Nellis AFB and Air Force Range (AFR) in the State of Nevada (see maps 1 and 5), Holloman AFB in the State of New Mexico (see map 2), and Mountain Home AFB in the State of Idaho (see map 3). All three sites are located in semi-arid parts of the western U. S. The U. S. Air Force, through its Air Combat Command (ACC) located at Langley AFB in the State of Virginia, asked the Federal Energy Management Program (FEMP) for technical assistance to conduct technical and feasibility evaluations for the potential to identify viable Geothermal Resources on or around three different AFBs. Idaho National Laboratory (INL) is supporting FEMP in providing technical assistance to a number of different Federal Agencies. For this report, the three different AFBs are considered one project because they all deal with potential Geothermal Resource evaluations. The three AFBs will be evaluated primarily for their opportunity to develop a Geothermal Resource of high enough quality grade (i.e., temperature, productivity, depth, etc.) to consider the possibility for generationmore » of electricity through a power plant. Secondarily, if the Resource for the three AFBs is found to be not sufficient enough for electricity generation, then they will be described in enough detail to allow the base energy managers to evaluate if the Resource is suitable for direct heating or cooling. Site visits and meetings by INL personnel with the staff at each AFB were held in late FY-2009 and FY-2010. This report provides a technical evaluation of the opportunities and challenges for developing Geothermal Resources on and around the AFBs. An extensive amount of literature and geographic information was evaluated as a part of this assessment. Resource potential maps were developed for each of the AFBs.« less