Download or read book Determination of In situ Stress to Predict Direction of Hydraulically Created Fractures for Development of Hot Dry Rock Geothermal Reservoir in Japan written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: It is very important to know the underground stress state to design and complete a Hot Dry Rock geothermal reservoir because the direction of the hydraulic fractures depends on the earth stress. The hydraulic mini fracturing technique was introduced to determine the in-situ stress state without assuming the borehole axis to be parallel to one of the principal stresses. Small scale hydraulic fracturing tests were conducted to verify this technique at an underground power plant and microseismic activities were monitored for fracture mapping. The direction of the fracture propagation was estimated from the in-situ stress state and compared with the fracture plane mapped by microseismic activities. 2 refs., 7 figs., 1 tab.
Download or read book Determination of In situ Stress to Pedict Direction of Hydraulically Created Fractures for Development of Hot Dry Rock Geothermal Reservoirs in Japan written by and published by . This book was released on 1985 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydraulic fracturing and geothermal energy written by S. Nemat-Nassar and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 519 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic fracturing has been and continues to be a major techno logical tool in oil and gas recovery, nuclear and other waste disposal, mining and particularly in-situ coal gasification, and, more recently, in geothermal heat recovery, particularly extracting heat from hot dry rock masses. The understanding of the fracture process under the ac tion of pressurized fluid at various temperatures is of fundamental scientific importance, which requires an adequate description of thermomechanical properties of subsurface rock, fluid-solid interaction effects, as well as degradation of the host rock due to temperature gradients introduced by heat extraction. Considerable progress has been made over the past several years in laboratory experiments, analytical and numerical modeling, and in-situ field studies in various aspects of hydraulic fracturing and geothermal energy extraction, by researchers in the United States and Japan and also elsewhere. However, the results have been scattered throughout the literature. Therefore, the time seemed ripe for bringing together selected researchers from the two countries, as well as observers from other countries, in order to survey the state of the art, exchange scientific information, and establish closer collaboration for further, better coordinated scientific effort in this important area of research and exploration.
Download or read book Energy Research Abstracts written by and published by . This book was released on 1985 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1985 International Symposium on Geothermal Energy written by and published by . This book was released on 1985 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geothermal Energy Technology written by and published by . This book was released on 1986 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Engineering Geological Advances in Japan for the New Millennium written by Y. Kanaori and published by Elsevier. This book was released on 2000-11-03 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: The geology of the Japanese Islands is enormously complicated because of the active tectonism that has taken place on the boundary between the Pacific and Eurasian plates. Geological formations there are intricately deformed and displaced by many active faults. Hence, in planning for and siting large construction projects, such as nuclear power stations, underground power stations, and the underground facility for High-Level Radioactive Waste (HLW), more detailed investigations are necessary than in more stable parts of the world. Only then can assessments be made as to the long-term stability, hydrological characteristics and mechanical characteristics of geological conditions.This book offers recent research studies in engineering geology in Japan. It contains 27 papers of scope and importance sufficient to allow engineering geologists throughout the world to understand more of the present state of research and study in Japan.The title also includes a number of current topics in which Japanese engineering geologists have participated: the planning for and siting of large construction, such as nuclear power stations, underground power stations, and the underground facility for High-Level Radioactive Waste (HLW); the construction project of highways and nuclear power stations and new energy developments such as those for geothermal energy; the countermeasures for natural hazards caused by earthquakes, landslides, and slope, and stone deterioration; and alteration because of weathering at and near the Earth's surface.
Download or read book The Development and Evaluation of a Field Method for In situ Stress Determination Using Hydraulic Fracturing written by Jean-Claude Roegiers and published by . This book was released on 1974 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Deep Stress Probe, a special field tool, has been developed for use in determining in-situ stresses at great depth in rock masses. The tool, adapted from oil well logging equipment, features orientation and downhole pressure recording components and needs only one lowering for each complete measurement at a certain horizon. A Laboratory technique was developed to control fracture propagation in laboratory tests simulating practical hydraulic fracturing situations. These studies reveal that permeability may increase dramatically prior to macroscopic fracture in hydraulic fracturing. This is very significant and allows a better understanding of the factors affecting the breakdown pressure (rate of loading, viscosity of fracturing fluid).
Download or read book Petroleum Abstracts Literature and Patents written by and published by . This book was released on 1990 with total page 1416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Stress 03 written by K. Sugawara and published by CRC Press. This book was released on 2020-12-17 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication contains three special lectures, six keynote addresses and sixty-eight technical papers presented at the symposium. The wide variety of topics covered are grouped in the proceedings according to subject.
Download or read book Hydraulic fracturing and geothermal energy written by S. Nemat-Nassar and published by Springer. This book was released on 1983-07-31 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: Hydraulic fracturing has been and continues to be a major techno logical tool in oil and gas recovery, nuclear and other waste disposal, mining and particularly in-situ coal gasification, and, more recently, in geothermal heat recovery, particularly extracting heat from hot dry rock masses. The understanding of the fracture process under the ac tion of pressurized fluid at various temperatures is of fundamental scientific importance, which requires an adequate description of thermomechanical properties of subsurface rock, fluid-solid interaction effects, as well as degradation of the host rock due to temperature gradients introduced by heat extraction. Considerable progress has been made over the past several years in laboratory experiments, analytical and numerical modeling, and in-situ field studies in various aspects of hydraulic fracturing and geothermal energy extraction, by researchers in the United States and Japan and also elsewhere. However, the results have been scattered throughout the literature. Therefore, the time seemed ripe for bringing together selected researchers from the two countries, as well as observers from other countries, in order to survey the state of the art, exchange scientific information, and establish closer collaboration for further, better coordinated scientific effort in this important area of research and exploration.
Download or read book Government Reports Annual Index written by and published by . This book was released on 1985 with total page 1242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geothermal Resources Council Bulletin written by and published by . This book was released on 1985 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Real time and Post frac 3 D Analysis of Hydraulic Fracture Treatments in Geothermal Reservoirs written by and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Economic power production from Hot Dry Rock (HDR) requires the establishment of an efficient circulation system between wellbores in reservoir rock with extremely low matrix permeability. Hydraulic fracturing is employed to establish the necessary circulation system. Hydraulic fracturing has also been performed to increase production from hydrothermal reservoirs by enhancing the communication with the reservoir's natural fracture system. Optimal implementation of these hydraulic fracturing applications, as with any engineering application, requires the use of credible physical models and the reconciliation of the physical models with treatment data gathered in the field. Analysis of the collected data has shown that 2-D models and 'conventional' 3-D models of the hydraulic fracturing process apply very poorly to hydraulic fracturing in geothermal reservoirs. Engineering decisions based on these more 'conventional' fracture modeling techniques lead to serious errors in predicting the performance of hydraulic fracture treatments. These errors can lead to inappropriate fracture treatment design as well as grave errors in well placement for hydrothermal reservoirs or HDR reservoirs. This paper outlines the reasons why conventional modeling approaches fall short, and what types of physical models are needed to credibly estimate created hydraulic fracture geometry. The methodology of analyzing actual measured fracture treatment data and matching the observed net fracturing pressure (in realtime as well as after the treatment) is demonstrated at two separate field sites. Results from an extensive Acoustic Emission (AE) fracture diagnostic survey are also presented for the first case study aS an independent measure of the actual created hydraulic fracture geometry.
Download or read book A Method for Stress Determination in N E and T Tunnels Nevada Test Site by Hydraulic Fracturing with a Comparison of Overcoring Methods written by C. H. Miller and published by . This book was released on 1976 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Rock Mechanics in the 1990s written by Bezalel C. Haimson and published by . This book was released on 1993 with total page 1032 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1985 with total page 1048 pages. Available in PDF, EPUB and Kindle. Book excerpt:
