Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The formulation and evolution of the Federal Hot Dry Rock Geothermal Energy Development Program at the Los Alamos Scientific Laboratory are traced. Program motivation is derived from the enormous potential of the resource. Accomplishments to date, including the establishment and evaluation of the 5-MW/sub t/ Phase 1 reservoir at Fenton Hill, NM and various instrument and equipment developments, are discussed. Future plans presented include (1) establishment of a 20- to 50-MW/sub t/ Phase 2 reservoir at Fenton Hill that will be used to demonstrate longevity and, eventually, electric power production and (2) the selection of a second site at which a direct thermal application will be demonstrated.
Author: Los Alamos National Laboratory. Hot Dry Rock Geothermal Energy Development Program Publisher: ISBN: Category : Fenton Hill (N.M.) Languages : en Pages : 0
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
During fiscal year 1981, activities of the Hot Dry Rock Geothermal Energy Development Program were concentrated in four principal areas: (1) data collection to permit improved estimates of the hot dry rock geothermal energy resource base of various regions of the United States and of the United States as a whole, combined with detailed investigations of several areas that appear particularly promising either for further energy extraction experiments or for future commercial development; (2) successful completion of a 9-month, continuous, closed-loop, recirculating flow test in the enlarged Phase I System at Fenton Hill, New Mexico - a pressurized-water heat-extraction loop developed in low-permeability granitic rock by hydraulic fracturing; (3) successful completion at a depth of 4084 m (13,933 ft) of well EE-3, the production well of a larger, deeper, and hotter, Phase II System at Fenton Hill. Well EE-3 was directionally drilled with control of both azimuth and inclination. Its inclined section is about 380 m (1250 ft) vertically above the injection well, EE-2, which was completed in FY80; and (4) supporting activities included new developments in downhole instrumentation and equipment, geochemical and geophysical studies, rock-mechanics and fluid-mechanics investigations, computer analyses and modeling, and overall system design. Under an International Energy Agency agreement, the New Energy Development Organization, representing the Government of Japan has joined Kernforschungsanlage-Juelich GmbH, representing the Federal Republic of Germany, and the US Department of Energy as an active participant in the Fenton Hill Hot Dry Rock Project.
Author: United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Energy and the Environment Publisher: ISBN: Category : Political Science Languages : en Pages : 134
Author: Los Alamos National Laboratory. Hot Dry Rock Geothermal Energy Development Program Publisher: ISBN: Category : Geothermal engineering Languages : en Pages : 32
Book Description
Preparation, execution, and analysis of a 30-day Initial Closed-Loop Flow Test (ICFT) of the Phase II reservoir were the primary objectives of the Hot Dry Rock Program in fiscal year 1986. The ICFT successfully tested the Phase II heat-extraction loop with the injection of 37,000 m3 of cold water and production of 23,000 m3 of hot water, extracting up to 10 MW/sub t/ when production reached 0.0139 m3/s at 192/degree/C. By the end of the test, water loss rate has decreased to 26% and a significant portion of the injected water had been recovered, 66% during the test and an additional 20% during subsequent venting. Geochemical, tracer, and seismic analyses suggest reservoir fracture volume was growing throughout the test. A new technique, the ''three-point'' method, was developed to determine locations and orientations of seismically active planes. Fault or joint planes are identified in what superficially appears to be an amorphous microearthquake location set. Five planes were determined when the three-point method was applied to a location data set for the massive hydraulic-fracturing experiment conducted in 1983. 23 refs., 19 figs., 3 tabs.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Recent accomplishments of the program are highlighted by a successful limited term flow test of the Phase 2 reservoir at the Fenton Hill site near Los Alamos. This reservoir connection was established by sidetracking one of the deep wells into hydraulically fractured areas, identified by microseismic data after original fracture attempts failed to connect the two wells. Hydraulic communication was improved by supplemental fracturing. Preliminary testing indicated a reservoir with fracture volume and heat production area surpassing the values from the earlier Phase 1 reservoir. Following completion of the downhole reservoir system, preparations were made for a reservoir-energy-extraction test. This Initial Closed Loop Flow Test (ICFT) was needed to obtain operating characteristics for planning a much longer test for thorough reservoir evaluation. The 30-day ICFT succeeded with final production of about 10 MWt at 192°C, while injecting 285 gpm at 4600 psi and producing 206 gpm at 500 psi. The water loss rate and flow impedance were high, 27% and 18 psi/gpm respectively, but were declining. Radioactive tracer tests indicated reservoir volume growth during the experiment which was continuously monitored for acoustic or microseismic activity. Following the flow test, experiments were continued for several months during the venting process. Preparations are now underway for the Long Term Flow Test (LTFT). To understand as much as possible about the Phase 2 reservoir and to demonstrate the commercial feasibility of energy from HDR reservoirs, a flow test of approximately one year's duration is deemed necessary. Part of the preparation for the LTFT is the workover and repair of the production well and the installation of a competent overall flow loop and energy exchange system. 7 refs., 5 figs.
Author: 
Author: Hot Dry Rock Program (U.S.)
Author: Gregory J. Nunz
Author: Los Alamos National Laboratory. Hot Dry Rock Geothermal Energy Development Program
Author: 
Author: United States. Congress. House. Committee on Interior and Insular Affairs. Subcommittee on Energy and the Environment
Author: Los Alamos National Laboratory
Author: Los Alamos National Laboratory. Hot Dry Rock Geothermal Energy Development Program
Author: 
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