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Rock Matrix and Fracture Analysis of Flow in Western Tight Gas Sands

Description: Advanced core analysis includes measurements on the matrix properties of the rock. Matrix properties are important even in fractured wells since it is these properties which determine the rate of gas flow into the fractures. Cores are being tested from the fluvial, coastal, and paludal zones of the Mesaverde. At least two cores from each of these zones from all three wells will be analyzed. Properties measured include permeability as a function of confining pressure over the range of 500 to 500… more
Date: January 1, 1985
Creator: Morrow, N. R.; Brower, K. R. & Ward, J. S.
Partner: UNT Libraries Government Documents Department
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Vertical borehole design and completion practices used to remove methane gas from mineable coalbeds

Description: Coalbed gas drainage from the surface in advance of mining has long been the goal of researchers in mine safety. Bureau of Mines efforts to achieve this goal started about 1965 with the initiation of an applied research program designed to test drilling, completion, and production techniques for vertical boreholes. Under this program, over 100 boreholes were completed in 16 different coalbeds. The field methods derived from these tests, together with a basic understanding of the coalbed reservo… more
Date: August 1, 1980
Creator: Lambert, S. W.; Trevits, M. A. & Steidl, P. F.
Partner: UNT Libraries Government Documents Department
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Research projects needed for expediting development of domestic oil and gas resources through arctic, offshore, and drilling technology

Description: This document contains the research projects which were identified at an industry-government workshop on Arctic, Offshore, and Drilling Technology (AODT) held at Bartlesville Energy Technology Center, January 5-7, 1981. The purpose of the workshop was to identify those problem areas where government research could provide technology advancement that would assist industry in accelerating the discovery and development of US oil and gas resouces. The workshop results are to be used to guide an eff… more
Date: April 1, 1982
Creator: Canja, S. & Williams, C.R.
Partner: UNT Libraries Government Documents Department
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Environmental data energy technology characterizations: natural gas

Description: Environmental Data Energy Technology Characterizations are publications which are intended to provide policy analysts and technical analysts with basic environmental data associated with key energy technologies. This publication provides backup documentation on natural gas. The transformation of the energy in gas into a more useful form is described in this document in terms of major activity areas in the gas cycle; that is, in terms of activities which produce either an energy product or a fue… more
Date: April 1, 1980
Partner: UNT Libraries Government Documents Department
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A novel geotechnical/geostatistical approach for exploration and production of natural gas from multiple geologic strata, Phase 1

Description: This research program has been designed to develop and verify a unique geostatistical approach for finding natural gas resources. The project has been conducted by Beckley College, Inc., and BDM Engineering Services Company (BDMESC) under contract to the US Department of Energy (DOE), Morgantown Energy Technology Center (METC). This section, Volume II, contains a detailed discussion of the methodology used and the geological and production information collected and analyzed for this study. A co… more
Date: May 1, 1991
Creator: Overbey, W. K. Jr.; Reeves, T. K.; Salamy, S. P.; Locke, C. D.; Johnson, H. R.; Brunk, R. et al.
Partner: UNT Libraries Government Documents Department
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A novel geotechnical/geostatistical approach for exploration and production of natural gas from multiple geologic strata, Phase 1

Description: This research program has been designed to develop and verify a unique geostatistical approach for finding natural gas resources. The research has been conducted by Beckley College, Inc. (Beckley) and BDM Engineering Services Company (BDMESC) under contract to the US Department of Energy (DOE), Morgantown Energy Technology Center. Phase 1 of the project consisted of compiling and analyzing relevant geological and gas production information in selected areas of Raleigh County, West Virginia, ult… more
Date: May 1, 1991
Creator: Overbey, W. K. Jr.; Reeves, T. K.; Salamy, S. P.; Locke, C. D.; Johnson, H. R.; Brunk, R. et al.
Partner: UNT Libraries Government Documents Department
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Instrumentation of dynamic gas pulse loading system

Description: The overall goal of this work is to further develop and field test a system of stimulating oil and gas wells, which increases the effective radius of the well bore so that more oil can flow into it, by recording pressure during the gas generation phase in real time so that fractures can be induced more predictably in the producing formation. Task 1: Complete the laboratory studies currently underway with the prototype model of the instrumentation currently being studied. Task 2: Perform field t… more
Date: April 14, 1992
Creator: Mohaupt, H.
Partner: UNT Libraries Government Documents Department
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Full-scale laboratory drilling tests on sandstone and dolomite. Final report

Description: Full-scale laboratory drilling experiments were performed under simulated downhole conditions to determine what effect changing various drilling parameters has on penetration rate. The two rock types, typical of deep oil and gas reservoirs, used for the tests were Colton Sandstone and Bonne Terre Dolomite. Drilling was performed with standard 7/sup 7///sub 8/ inch rotary insert bits and water base mud. The results showed the penetration rate to be strongly dependent on bit weight, rotary speed,… more
Date: December 1, 1977
Creator: Black, A.D.; Green, S.J. & Rogers, L.A.
Partner: UNT Libraries Government Documents Department
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Installation of a Devonian Shale Reservoir Testing Facility and acquisition of reservoir property measurements

Description: In October, a contract was awarded for the Installation of a Devonian Shale Reservoir Testing Facility and Acquisition of Reservoir Property measurements from wells in the Michigan, Illinois, and Appalachian Basins. Geologic and engineering data collected through this project will provide a better understanding of the mechanisms and conditions controlling shale gas production. This report summarizes the results obtained from the various testing procedures used at each wellsite and the activitie… more
Date: September 1, 1991
Creator: Locke, C. D. & Salamy, S. P.
Partner: UNT Libraries Government Documents Department
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The development and testing of a fieldworthy system of improved fluid pumping device and liquid sensor for oil wells

Description: A major expenditure to maintain oil and gas leases is the support of pumpers, those individuals who maintain the pumping systems on wells to achieve optimum production. Many leases are marginal and are in remote areas and this requires considerable driving time for the pumper. The Air Pulse Oil Pump System is designed to be an economical system for the shallow stripper wells. To improve on the economics of this system, we have designed a Remote Oil Field Monitor and Controller to enable us to a… more
Date: December 31, 1991
Creator: Buckman, W.G.
Partner: UNT Libraries Government Documents Department
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Simulation studies to evaluate the effect of fracture closure on the performance of naturally fractured reservoirs

Description: The study has two principal objectives: (1) To evaluate the effects of fracture closure on the recovery of oil and gas reserves from naturally fractured petroleum or natural gas reservoirs. (2) To evaluate procedures for improving the recovery of these reserves using innovative fluid injection techniques to maintain reservoir pressure and mitigate the impact of fracture closure. The total scope of the study has been subdivided into three main tasks: (1) Baseline studies (non-pressure sensitive … more
Date: July 15, 1991
Creator: Dauben, D.L.
Partner: UNT Libraries Government Documents Department
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High-temperature electronics: an overview

Description: A summary is presented providing an overview of contemporary high-temperature electronics and identifying the major areas where developments are needed and the laboratories where research is being conducted. The geothermal program, high-temperature oil and gas well logging, jet engine monitors, and circuits for operation in the sodium coolant loop of the Clinch River Breeder reactor have stimulated research. (FS)
Date: January 1, 1979
Creator: Heckman, R.C.
Partner: UNT Libraries Government Documents Department
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Feasibility study of a hybrid erosion drilling concept

Description: The results of a system analysis of the ERODRILL concept are presented. ERODRILL is an erosion drilling technique that uses a stream of propellant capsules carried in the drilling mud and ignited near the bottom of the drill hole to provide a fluid jet on the rock face. The concept evaluated in this study was a hybrid system using the erosion drill to cut a kerf for a conventional rotary drill to break to. A preliminary design was made and a hypergolic propellant, Hercules HES 6573, was chosen.… more
Date: June 1, 1977
Partner: UNT Libraries Government Documents Department
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Mapping acoustic emissions from hydraulic fracture treatments using coherent array processing: Concept

Description: Hydraulic fracturing is a widely-used well completion technique for enhancing the recovery of gas and oil in low-permeability formations. Hydraulic fracturing consists of pumping fluids into a well under high pressure (1000--5000 psi) to wedge-open and extend a fracture into the producing formation. The fracture acts as a conduit for gas and oil to flow back to the well, significantly increasing communication with larger volumes of the producing formation. A considerable amount of research has … more
Date: September 1, 1991
Creator: Harris, D. B.; Sherwood, R. J.; Jarpe, S. P. & Harben, P. E.
Partner: UNT Libraries Government Documents Department
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Simulator for unconventional gas resources multi-dimensional model SUGAR-MD. Volume I. Reservoir model analysis and validation

Description: The Department of Energy, Morgantown Energy Technology Center, has been supporting the development of flow models for Devonian shale gas reservoirs. The broad objectives of this modeling program are: (1) To develop and validate a mathematical model which describes gas flow through Devonian shales. (2) To determine the sensitive parameters that affect deliverability and recovery of gas from Devonian shales. (3) To recommend laboratory and field measurements for determination of those parameters … more
Date: January 1, 1982
Partner: UNT Libraries Government Documents Department
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Numerical simulation of fluid flow in porous/fractured media

Description: Theoretical models of fluid flow in porous/fractured media can help in the design of in situ fossil energy and mineral extraction technologies. Because of the complexity of these processes, numerical solutions are usually required. Sample calculations illustrate the capabilities of present day computer models.
Date: January 1, 1981
Creator: B.J., Travis & Cook, T.L.
Partner: UNT Libraries Government Documents Department
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Borehole measurements while drilling: systems and activities

Description: Attention is focused on all potential methods of drilling safer and cheaper. Real time data from the bit offers the greatest potential for meeting these needs. As a result, numerous companies are actively competing to develop this oil field service capability and to capture a world wide market. Two basic categories of service are sought. The first, and highest priority, is drilling safety and efficiency; the second is real-time logging, or formation evaluation. This study addresses the types of… more
Date: June 1, 1977
Creator: McDonald, W.J.
Partner: UNT Libraries Government Documents Department
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Data accumulation on the methane potential of the coal beds of Colorado. Final report

Description: A two-year project was conducted to gather data that would assist in the evaluation of the methane potential of the coal beds of Colorado. It was found that a number of closed underground coal mines in the State had reported gassy conditions or had experienced fires and explosions of varied intensity and frequency. The majority of such occurrences have been in those areas characterized by coals of relatively low (i.e., below 31%) volatile matter (VM) content. The south half of the Raton Mesa co… more
Date: March 31, 1978
Creator: Fender, H. B. & Murray, D. K.
Partner: UNT Libraries Government Documents Department
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Solar reforming of methane in a direct absorption catalytic reactor on a parabolic dish: 2, Modeling and analysis

Description: The CAtalytically Enhanced Solar Absorption Receiver (CAESAR) experiment was conducted to determine the thermal, chemical, and mechanical performance of a commercial-scale, dish-mounted, direct catalytic absorption receiver (DCAR) reactor over a range of steady state and transient (cloud) operating conditions. The focus of the experiment is on global performance such as receiver efficiencies and overall methane conversion; it was not intended to provide data for code validation. A numerical mod… more
Date: January 1, 1991
Creator: Skocypec, R.D.; Hogan, R.E. Jr. & Muir, J.F.
Partner: UNT Libraries Government Documents Department
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K/sub Ic/ and J-resistance curve measurements on Nevada tuff

Description: Linear elastic fracture mechanics and J-integral test methods were used to determine the static fracture behavior of a porous volcanic tuff. Notched and prefatigued specimens of two different sizes were tested in three-point bending. The fracture toughness (K/sub Ic/) and the J-resistance (J versus crack growth) curve for each specimen were determined. The results indicate that there is good agreement between the fracture parameters determined by the two methods; however, there is some dependen… more
Date: January 1, 1979
Creator: Weisinger, R.; Costin, L.S. & Lutz, T.J.
Partner: UNT Libraries Government Documents Department
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Drilling for energy resources

Description: Drilling is integral to the exploration, development, and production of most energy resources. Oil and natural gas, which are dependent on drilling technology, together account for about 77% of the energy sources consumed in the US. Thus, the limitations of current drilling technology also restrict the rate at which new energy supplies can be found, extracted, and brought to the marketplace. The purpose of the study reported was to examine current drilling technology, suggest areas where additi… more
Date: January 1, 1976
Partner: UNT Libraries Government Documents Department
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Proposed natural gas protection program for Naval Oil Shale Reserves Nos. 1 and 3, Garfield County, Colorado

Description: As a result of US Department of Energy (DOE) monitoring activities, it was determined in 1983 that the potential existed for natural gas resources underlying the Naval Oil Shales Reserves Nos. 1 and 3 (NOSrs-1 3) to be drained by privately-owned gas wells that were being drilled along the Reserves borders. In 1985, DOE initiated a limited number of projects to protect the Government's interest in the gas resources by drilling its own offset production'' wells just inside the boundaries, and by … more
Date: August 1, 1991
Partner: UNT Libraries Government Documents Department
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Nonlinear filtering in oil/gas reservoir simulation: filter design

Description: In order to provide an additional mode of utility to the USGS reservoir model VARGOW, a nonlinear filter was designed and incorporated into the system. As a result, optimal (in the least squares sense) estimates of reservoir pressure, liquid mass, and gas cap plus free gas mass are obtained from an input of reservoir initial condition estimates and pressure history. These optimal estimates are provided continuously for each time after the initial time, and the input pressure history is allowed … more
Date: October 1, 1980
Creator: Arnold, E. M.; Voss, D. A. & Mayer, D. W.
Partner: UNT Libraries Government Documents Department
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Design, build, develop and test a fieldworthy spiral tool and packer for casing repair

Description: A method for sealing casing is currently under development by Nu-Bore Systems. The method involves internally lining a section of the wellbore with a multi-layer spiral wrapping of a high strength, corrosion resistant metal, interleaved with a high bond strength, resilient epoxy. The high strength metal is preferably a copper based alloy hardened to a very high strength in order to resist the internal and external pressures of downhole environments. The epoxy adhesive formulation is one that fo… more
Date: January 1, 1992
Creator: Koster, C.
Partner: UNT Libraries Government Documents Department
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