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in subjects: "Sedimentary Rocks 030900* -- Natural Gas-- Artificial Stimulation, Plowshare-- -1989"  
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Western Gas Sands Project. Status report, 1 May-31 May, 1980

Description: This report summarizes the progress of the government-sponsored project directed towards increasing gas production from the low permeability gas sands of the western United States. The planning activities for the multi-well experiment continued in May. Bartlesville Energy Technology Center continued formation evaluation and reservoir simulation studies. Lawrence Livermore Laboratory continued calculations of fracturing near interfaces. Los Alamos Scientific Laboratory focused work on the perman… more
Date: January 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Stimulation model for lenticular sands: Volume 2, Users manual

Description: This User's Manual contains information for four fracture/proppant models. TUPROP1 contains a Geertsma and de Klerk type fracture model. The section of the program utilizing the proppant fracture geometry data from the pseudo three-dimensional highly elongated fracture model is called TUPROPC. The analogous proppant section of the program that was modified to accept fracture shape data from SA3DFRAC is called TUPROPS. TUPROPS also includes fracture closure. Finally there is the penny fracture a… more
Date: July 1, 1987
Creator: Rybicki, E.F.; Luiskutty, C.T.; Sutrick, J.S.; Palmer, I.D.; Shah, G.H. & Tomutsa, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western gas sands project. Status report, 1 April-30 April, 1980

Description: The progress of the government-sponsored projects directed towards increasing gas production from the low permeability gas sands of the western United States is summarized. Planning activities continued for the multi-well experiment. Bartlesville Energy Technology Center continued formation evaluation studies for the WGSP. Theoretical analyses continued at Lawrence Livermore Laboratory for fracture growth across frictional interfaces and fluid flow in a fracture. Studies have begun at Los Alamo… more
Date: January 1, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western Gas Sands Project. Status report, April 1--April 30, 1979

Description: Progress of government-sponsored projects directed toward increasing gas production from the low-permeability gas sands of the western United States is summarized. Work by the USGS toward resource assessment in the four primary study areas continued. Bartlesville Energy Technology Center continued work on fracture conductivity, rock-fluid interaction, and log evaluation and interpretation techniques. Experimental and theoretical work on hydraulic fracturing mechanics and analysis of well test d… more
Date: January 1, 1979
Creator: Atkinson, C H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Western Gas Sands Project. Status report, 1 July-31 July, 1979

Description: National Laboratories and Energy Technology Centers continued projects during July. Bartlesville Energy Technology Center continued work on core/fluid testing, fabrication of and improvements to confining pressure apparatus, advanced logging techniques and interpretation and reservoir simulation studies. At Lawrence Livermore Laboratory theoretical analysis and experimental programs continued for hydraulic fracturing. Testing of the borehole seismic and hydrophone systems for fracture mapping c… more
Date: January 1, 1979
Creator: Atkinson, C H
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western Gas Sands Project. Status report, 1 September 1979-30 September 1979

Description: This report summarizes progress of the government-sponsored projects directed toward increasing gas production from the low-permeability gas sands of the western United States. Bartlesville Energy Technology Center continued work on rock-fluid interaction and advanced logging techniques. Lawrence Livermore Laboratory continued experimental and theoretical work on hydraulic fracturing mechanics and analysis of well test data. Los Alamos Scientific Laboratory continued work on permeability and po… more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Western Gas Sands Project. Status report, 1 March 1979--31 March 1979

Description: Progress of the government-sponsored projects directed toward increasing gas production from low-permeability gas sands of the western United States is summarized. During March, National Laboratories and Energy Technology Centers generally progressed on schedule. Bartlesville Energy Technology Center continued work on fracture conductivity, rock-fluid interaction, and log evaluation techniques. Theoretical and experimental work on hydraulic fracturing mechanics and analysis of well test data co… more
Date: January 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fracture initiation using tailored-pulse loading

Description: Conditions to produce multiple fracturing of boreholes are examined for sandstone samples having a dry density of 2.42 Mg/m/sup 3/ and 8.9 percent porosity. Tailored-pulse loading experiments are performed with borehole pressures ranging from 10 to 100 MPa, loading rates from 10/sup -4/ to 10/sup 2/ MPa/ms and pulse durations from 10 to 50 ms. Samples are tested for initial states of dry, quasi-dry, and total saturation with confinement pressure varying from 0.1 to 50 MPa. Data show sensitivity… more
Date: June 1, 1981
Creator: Kusubov, A.S. & Swift, R.P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Unconventional Gas Recovery: State of Knowledge Document

Description: This report is a synthesis of environmental data and information relevant to the four areas of unconventional gas recovery (UGR) resource recovery: methane from coal, tight western sands, Devonian shales and geopressurized aquifers. Where appropriate, it provides details of work reviewed; while in other cases, it refers the reader to relevant sources of information. This report consists of three main sections, 2, 3, and 4. Section 2 describes the energy resource base involved and characteristic… more
Date: January 1, 1982
Creator: Geffen, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laboratory investigation on the effect of in situ stresses on hydraulic fracture containment

Description: Laboratory experiments have been conducted to determine the effect of in situ stress variations on hydraulic fracture containment. Fractures were initiated in layered rock samples with prescribed stress variations, and fracture growth characteristics were determined as a function of stress levels. Stress contrasts of 2-3 MPa were found to be sufficient to restrict fracture growth in laboratory samples of Nevada tuff and Tennessee and Nugget sandstones. The required stress level was found not to… more
Date: January 1, 1981
Creator: Warpinski, N.R.; Clark, J.A.; Schmidt, R.A. & Huddle, C.W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Hydraulic-fracture propagation in layered rock: experimental studies of fracture containment

Description: Fracture geometry is an important concern in the design of a massive hydraulic fracture treatment for improved natural gas recovery from tight gas sands. Possible prediction of vertical fracture growth and containment in layered rock requires an improved understanding of the parameters which may control fracture growth across layer interfaces. We have conducted laboratory hydraulic fracture experiments and elastic finite element studies which show that at least two distinct geologic conditions … more
Date: January 1, 1981
Creator: Teufel, L. W. & Clark, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Stress trajectory and advanced hydraulic-fracture simulations for the Eastern Gas Shales Project. Final report, April 30, 1981-July 30, 1983

Description: A summary review of hydraulic fracture modeling is given. Advanced hydraulic fracture model formulations and simulation, using the finite element method, are presented. The numerical examples include the determination of fracture width, height, length, and stress intensity factors with the effects of frac fluid properties, layered strata, in situ stresses, and joints. Future model extensions are also recommended. 66 references, 23 figures.
Date: January 1, 1983
Creator: Advani, S. H. & Lee, J. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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