5 Matching Results

Search Results

Advanced search parameters have been applied.

Identification of environmental control technologies for geothermal development in the Imperial Valley of California

Description: Control technologies to manage environmental impacts from geothermal developments in California's Imperial Valley from development to 1985 are discussed. Included are descriptions of methods for managing land subsidence by fluid injection; for preventing undesirable induced seismicity or mitigating the effects of seismic events; for managing liquid wastes through pretreatment or subsurface injection; for controlling H/sub 2/S by dispersal, reinjection, and chemical treatment of effluents; and for minimizing the impact of noise from power plants by setting up buffer zones and exclusion areas.
Date: October 5, 1978
Creator: Snoeberger, D.F. & Hill, J.H.
Partner: UNT Libraries Government Documents Department

Flow-regime characterization for horizontal two-phase steam flow

Description: A relatively simple model, using Baker parameters, is described and applied to flow-regime data generated by high speed photography of two-phase steam flow. The experiments were conducted at the Geothermal Test Facility (GTF) at Lawrence Livermore Laboratory. Although results depend somewhat on the personal judgment and interpretation of the observer, the model was found to give a reasonable prediction of the flow regime for the flow ranges available in 1- and 2-in.-diam pipes.
Date: October 5, 1976
Creator: Calder, C. A.
Partner: UNT Libraries Government Documents Department

Parcperdue Geopressure--Geothermal Project: Appendix B

Description: The reservoir models used to perform the drawdown and buildup pressure analyses consist of analytic forms in lieu of the finite difference or numeric simulator types. Analytic models are derived from solutions of the diffusion equation which relate a pressure response with time and distance in the reservoir for a specified flow system. Solutions of the diffusion equation are obtained through mathematical methods such as Laplace transforms, Fourier transforms, Neuman's product techniques and Green's functions. Before an analytic solution is derived, the diffusivity equation is expressed in terms of dimensionless potential (m{sub D}), dimensionless distance (r{sub D}) and dimensionless time (t{sub D}). For the cylindrical coordinate case, the diffusivity equation in dimensionless form for a geopressured system is given.
Date: October 5, 1981
Creator: Sweezy, L.R.
Partner: UNT Libraries Government Documents Department

Parcperdue Geopressure -- Geothermal Project: Appendix E

Description: The mechanical and transport properties and characteristics of rock samples obtained from DOW-DOE L.R. SWEEZY NO. 1 TEST WELL at the Parcperdue Geopressure/Geothermal Site have been investigated in the laboratory. Elastic moduli, compressibility, uniaxial compaction coefficient, strength, creep parameters, permeability, acoustic velocities (all at reservoir conditions) and changes in these quantities induced by simulated reservoir production have been obtained from tests on several sandstone and shale samples from different depths. Most important results are that the compaction coefficients are approximately an order of magnitude lower than those generally accepted for the reservoir sand in the Gulf Coast area and that the creep behavior is significant. Geologic characterization includes lithological description, SEM micrographs and mercury intrusion tests to obtain pore distributions. Petrographic analysis shows that approximately half of the total sand interval has excellent reservoir potential and that most of the effective porosity in the Cib Jeff Sand is formed by secondary porosity development.
Date: October 5, 1981
Creator: Sweezy, L.R.
Partner: UNT Libraries Government Documents Department

Parcperdue Geopressure -- Geothermal Project: Appendices (C--M)

Description: Twelve flow tests were made on the L. R. Sweezy No. 1 well. Short-term tests, Flow Test No.1 through Flow Test No.4 were designed to estimate formation properties and were conducted for drawdown periods measured in hours. Intermediate-term tests, Flow Test No.5 through Flow Test No.8, were for a few days and were designed to test for reservoir boundaries. Long-term tests, Flow Test No.9 through Flow Test No.12, were designed for drawdown periods of about 60 days in order to examine the depletion behavior of the reservoir.
Date: October 5, 1981
Creator: Sweezy, L.R.
Partner: UNT Libraries Government Documents Department