2-D and 3-D Elastic Modeling with Shared Seismic Models (open access)

2-D and 3-D Elastic Modeling with Shared Seismic Models

Several elastic models, both 2-D and 3-D, are being built for use in calculating synthetic elastic seismic data. The models will be made available to the research community, along with the synthetic data that are being calculated from them. These shared models have been proposed or contributed by participants in a collaborative industry, national laboratory, and university research project. The purpose of the modeling is to provide synthetic data to better understand elastic wave propagation and the effects of structural and stratigraphic complexities. The 2-D models are easier to design and change and synthetic calculations can be run relatively quickly in them. It will be possible to alter their layer properties and calculate time-lapse data sets from them. Field data will be available to accompany many of the 2-D models. 3-D models are more realistic, but more difficult to design and change. They also require considerably more computing resources to calculate synthetic data from them. A new 3-D model is being designed, and will be used for computing synthetic elastic data.
Date: April 30, 2002
Creator: House, L.; Marfurt, K. J.; Larsen, S. & Martin, G. S.
Object Type: Article
System: The UNT Digital Library
3-D elastic wave scattering by a layer containing vertical periodic fractures (open access)

3-D elastic wave scattering by a layer containing vertical periodic fractures

None
Date: April 30, 2002
Creator: Nakagawa, Seiji; Nihei, Kurt T.; Myer, Larry R. & Majer, Ernest L.
Object Type: Article
System: The UNT Digital Library
Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: January-March 2002 (open access)

Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: January-March 2002

Three major goals were accomplished during this phase. First, a study was completed of the effects of stress-induced changes in anisotropic elastic moduli in sandstone. Second, a new method for measuring the anisotropic poroelastic moduli from acoustic data was developed. Third, a series of triaxial experiments were conducted on unconsolidated sands to identify pressure/stress conditions where liquefaction occurs under high confining pressures. Stress-induced changes in anisotropic Young's moduli and shear moduli were observed during deformational pathway experiments. A new method was made for the acquisition of compressional and shear wave velocities along a series of 3-dimensional raypaths through a core sample as it is subjected to deformation. Three different deformational pathway experiments were conducted. During the hydrostatic deformation experiment, little or no anisotropy was observed in either the Young's moduli or shear moduli. Significant deformational anisotropies were observed in both moduli during the uniaxial strain test and the triaxial compression experiment but each had a different nature. During the triaxial experiment the axial and lateral Young's moduli and shear moduli continued to diverge as load was applied. During the uniaxial strain experiment the anisotropy was ''locked in'' early in the loading phase but then remained steady as both the confining …
Date: April 30, 2002
Creator: Scott Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Object Type: Report
System: The UNT Digital Library
ADVANCED CUTTINGS TRANSPORT STUDY (open access)

ADVANCED CUTTINGS TRANSPORT STUDY

This is the third quarterly progress report for Year 3 of the ACTS Project. It includes a review of progress made in: (1) Flow Loop construction and development and (2) research tasks during the period of time between Jan. 1, 2002 and Mar. 31, 2002. This report presents a review of progress on the following specific tasks: (a) Design and development of an Advanced Cuttings Transport Facility (Task 3: Addition of a Cuttings Injection/Separation System), (b) Research project (Task 6): ''Study of Cuttings Transport with Foam Under LPAT Conditions (Joint Project with TUDRP)'', (c) Research project (Task 9b): ''Study of Foam Flow Behavior Under EPET Conditions'', (d) Research project (Task 10): ''Study of Cuttings Transport with Aerated Mud Under Elevated Pressure and Temperature Conditions'', (e) Research on three instrumentation tasks to measure: Cuttings concentration and distribution in a flowing slurry (Task 11), Foam texture while transporting cuttings. (Task 12), and Viscosity of Foam under EPET (Task 9b); (f) Development of a Safety program for the ACTS Flow Loop, progress on a comprehensive safety review of all flow-loop components and operational procedures. (Task 1S); and (g) Activities towards technology transfer and developing contacts with Petroleum and service company members, and increasing …
Date: April 30, 2002
Creator: Reed, Troy; Miska, Stefan; Takach, Nicholas; Ashenayi, Kaveh; Pickell, Mark; Volk, Len et al.
Object Type: Report
System: The UNT Digital Library
An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery From the Complex Monterey Reservoir of South Ellwood Field, Offshore California, Quarterly Report: January - March 2002 (open access)

An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery From the Complex Monterey Reservoir of South Ellwood Field, Offshore California, Quarterly Report: January - March 2002

Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the original oil in place. To embark upon successful redevelopment and to optimize reservoir management, Venoco intends to investigate, map and characterize field fracture patterns and the reservoir conduit system. State of the art borehole imaging technologies including FMI, dipole sonic and cross-well seismic, interference tests and production logs will be employed to characterize fractures and micro faults. These data along with the existing database will be used for construction of a novel geologic model of the fracture network. Development of an innovative fracture network reservoir simulator is proposed to monitor and manage the aquifer's role in pressure maintenance and water production. The new fracture simulation model will be used for both planning optimal paths for new wells and improving ultimate recovery. In the second phase …
Date: April 30, 2002
Creator: Horner, Steve & Ershaghi, Iraj
Object Type: Report
System: The UNT Digital Library
Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants (open access)

Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants

Eltron Research Inc., and team members CoorsTek, McDermott Technology, inc., Sued Chemie, Argonne National Laboratory, and Oak Ridge National Laboratory are developing an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. This project was motivated by the National Energy Technology Laboratory (NETL) Vision 21 initiative which seeks to economically eliminate environmental concerns associated with the use of fossil fuels. This objective is being pursued using dense membranes based in part on Eltron-patented ceramic materials with a demonstrated ability for proton and electron conduction. The technical goals are being addressed by modifying single-phase and composite membrane composition and microstructure to maximize proton and electron conductivity without loss of material stability. Ultimately, these materials must enable hydrogen separation at practical rates under ambient and high-pressure conditions, without deactivation in the presence of feedstream components such as carbon dioxide, water, and sulfur.
Date: April 30, 2002
Creator: Roark, Shane E.; Sammells, Anthony F.; Mackay, Richard A.; Pitzman, Lyrik Y.; Zirbel, Thomas A.; Barton, Thomas F. et al.
Object Type: Report
System: The UNT Digital Library
Advanced nuclear system for the 21st century (open access)

Advanced nuclear system for the 21st century

None
Date: April 30, 2002
Creator: Chang, Y. I.
Object Type: Article
System: The UNT Digital Library
ADVANCED RESERVOIR CHARACTERIZATION IN THE ANTELOPE SHALE TO ESTABLISH THE VIABILITY OF CO2 ENHANCED OIL RECOVERY IN CALIFORNIA'S MONTEREY FORMATION SILICEOUS SHALES (open access)

ADVANCED RESERVOIR CHARACTERIZATION IN THE ANTELOPE SHALE TO ESTABLISH THE VIABILITY OF CO2 ENHANCED OIL RECOVERY IN CALIFORNIA'S MONTEREY FORMATION SILICEOUS SHALES

During the 1st quarter of 2002 CO{sub 2} injection remained shut-in as we continued to inject water and wait for the producing wells to be repaired. This report is a summary of the CO{sub 2} pilot execution that occurred during the 1st quarter of 2002.
Date: April 30, 2002
Creator: Perri, Pasquale R.
Object Type: Report
System: The UNT Digital Library
Astrophysical and Astrochemical Insights into the Origin of Life (open access)

Astrophysical and Astrochemical Insights into the Origin of Life

Nucleosynthesis of heavy elements such as carbon in stars allowed the formation of organic molecules in space, which appear to be widespread in our Galaxy. The physical and chemical conditions - including density, temperature, ultraviolet radiation and energetic particles - determine reaction pathways and the complexity of organic molecules in different space environments. Dense interstellar clouds are the birth sites of stars of all masses and their planetary systems. During the protostellar collapse, gaseous and solid interstellar organic molecules are integrated into protostellar disks from which planets and smaller solar system bodies form. After the formation of the planets in our own solar system, 4.6 billion years ago, all of them, including the Earth, were subjected to frequent impacts for several hundred million years. First indications for life on Earth are dated 3.8-3.5 billion years ago. That life arose very shortly after this heavy bombardment phase raises many questions. A prebiotic non-reducing atmosphere predicts that building blocks of macromolecules--such as amino acids, sugars, purines and pyrimidines were not formed in abundance. A part of the prebiotic organic content of the early Earth could have been delivered by asteroids, comets and smaller fragments such as meteorites and interplanetary dust particles (IDPs). …
Date: April 30, 2002
Creator: Ehrenfreund, P; Becker, L; Blank, J; Brucato, J; Colangeli, L; Derenne, S et al.
Object Type: Report
System: The UNT Digital Library
Aviation Finance: Distribution of Airport Grant Funds Complied with Statutory Requirements (open access)

Aviation Finance: Distribution of Airport Grant Funds Complied with Statutory Requirements

A letter report issued by the General Accounting Office with an abstract that begins "The Federal Aviation Administration (FAA) administers the Airport Improvement Program (AIP), which provides billions of dollars in federal grants to airports for planning and development projects. The total funds awarded by FAA was consistent with the total amount of AIP funds available for obligation for fiscal years 1996 through 2000. FAA also made available or awarded AIP grant funds in accordance with the statutory formulas and set-asides contained in the authorization acts for the five fiscal years reviewed. In some cases, FAA awarded more funding than required to some airports and projects when it distributed the remaining AIP discretionary funds, which are not subject to statutory formulas or set-asides. GAO also found that small airports received greater amounts than large airports."
Date: April 30, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
BNL/RIKEN RHIC Spin Physics Symposium, Volume 6, 2002 (open access)

BNL/RIKEN RHIC Spin Physics Symposium, Volume 6, 2002

None
Date: April 30, 2002
Creator: Lee, T. D.
Object Type: Article
System: The UNT Digital Library
Chemical Weapons Convention: Issues for Congress (open access)

Chemical Weapons Convention: Issues for Congress

The Convention provides the most extensive and intrusive verification regime of any arms control treaty, extending its coverage to not only governmental but also civilian facilities. The Convention also requires export controls and reporting requirements on chemicals that can be used as warfare agents and their precursors. The CWC establishes the Organization for the Prohibition of Chemical Weapons (OPCW) to oversee the Convention's implementation. Chemical Weapons Convention implementing legislation, as S. 610, passed the Senate unanimously on May 23, 1997. This legislation, which was an amendment in the nature of a substitute reported from the Judiciary Committee, provides the statutory authority for domestic compliance with the Convention's provisions. It sets criminal and civil penalties for the development, production, acquisition, stockpiling, transfer, possession, or use of chemical weapons.
Date: April 30, 2002
Creator: Bowman, Steven R.
Object Type: Report
System: The UNT Digital Library
THE COLOR GLASS CONDENSATE, RHIC AND HERA. (open access)

THE COLOR GLASS CONDENSATE, RHIC AND HERA.

In this talk, I discuss a universal form of matter, the Color Glass Condensate. It is this matter which composes the low x part of all hadronic wavefunctions. The experimental programs at RHIC and HERA, and future programs at LHC and eRHIC may allow us to probe and study the properties of this matter.
Date: April 30, 2002
Creator: McLerran, L.
Object Type: Article
System: The UNT Digital Library
Commercial Activities Panel: Improving the Sourcing Decisions of the Government; Final Report, April 2002 (open access)

Commercial Activities Panel: Improving the Sourcing Decisions of the Government; Final Report, April 2002

Other written product issued by the General Accounting Office with an abstract that begins "The Floyd D. Spence National Defense Authorization Act for Fiscal Year 2001 (the Act) required that the Comptroller General of the United States convene a panel of experts to study the policies and procedures governing the transfer of commercial activities for the federal government from government personnel to a federal contractor. The Panel held a total of 11 meetings over the period of May 2001 to March 2002, including three public hearings in Washington, D.C., Indianapolis, Indiana, and San Antonio, Texas. In these hearings, panelists heard first-hand both about the current process, primarily the cost comparison process conducted under Office of Management and Budget Circular A-76, as well as alternatives to that process. Panel staff conducted an extensive amount of additional research, review, and analysis in order to supplement and evaluate the public testimony. This report includes the findings of the Panel as a whole, as well as a written statement from each Panel member as the Panel's report and recommendations."
Date: April 30, 2002
Creator: United States. General Accounting Office.
Object Type: Text
System: The UNT Digital Library
COMPARATIVE EVALUATION OF AMBIENT FINE PARTICULATE MATTER (PM2.5) DATA OBTAINED FROM URBAN AND RURAL MONITORING SITES ALONG THE UPPER OHIO RIVER VALLEY (open access)

COMPARATIVE EVALUATION OF AMBIENT FINE PARTICULATE MATTER (PM2.5) DATA OBTAINED FROM URBAN AND RURAL MONITORING SITES ALONG THE UPPER OHIO RIVER VALLEY

The report discusses the following conclusions: (1) The TEOM equipment performed as well as the sequential filter samplers in accounting for ambient PM{sub 2.5} levels; however, the FRM-obtained data was consistently lower than the averages from the TEOM/DRI-SFS measurements; (2) The trending in the PM{sub 2.5} levels was similar for Lawrenceville and Holbrook, which represent an urban and a rural site sixty-five miles apart. This implies that the PM{sub 2.5} levels appear to be impacted more by regional than by local effects; (3) The absolute median PM{sub 2.5} levels were slightly higher for Lawrenceville than for Holbrook, implying that local urban environmental contributions had a minor but measurable effect on total PM{sub 2.5} mass concentration; (4) PM{sub 2.5} and PM{sub 10} mass concentration levels were consistently higher in summer than in winter, with intermediate levels observed in the spring and fall; (5) Sulfate levels predominated in the speciation data obtained from both the Holbrook and the Lawrenceville sites during winter and summer intensive sampling. Sulfate level measured at Holbrook were higher than those taken at Lawrenceville regardless of the season; (6) Ammonium levels remained relatively constant between seasons and between sites; (7) Nitrate levels measured at Lawrenceville were higher than …
Date: April 30, 2002
Creator: unknown
Object Type: Report
System: The UNT Digital Library
COMPARISON OF THE TRADITIONAL STRENGTH OF MATERIALS APPROACH TO DESIGN WITH THE FRACTURE MECHANICS APPROACH (open access)

COMPARISON OF THE TRADITIONAL STRENGTH OF MATERIALS APPROACH TO DESIGN WITH THE FRACTURE MECHANICS APPROACH

The objective of this activity is to show that the use of the traditional strength of materials approach to the drip shield and the waste package (WP) designs is bounding and appropriate when compared to the fracture mechanics approach. The scope of this activity is limited to determining the failure assessment diagrams for the two materials at issue: Ti-7 and Alloy 22. This calculation is intended for use in support of the license application design of the drip shield and the WP. This activity is associated with the drip shield and the WP designs. The activity evaluation for work package number P32 12234F2, included in ''Technical Work Plan for: Waste Package Design Description for LA'' (Ref. 1, p. A-6), has determined that the development of this document is subject to ''Quality Assurance Requirements and Description'' requirements. The control of the electronic management of data is accomplished in accordance with the methods specified in Reference 1, Section 10. AP-3.124, ''Design Calculations and Analysis'' (Ref. 2), is used to develop and document the calculation.
Date: April 30, 2002
Creator: Ceylan, Z.
Object Type: Report
System: The UNT Digital Library
A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION (open access)

A COMPUTATIONAL WORKBENCH ENVIRONMENT FOR VIRTUAL POWER PLANT SIMULATION

This is the sixth Quarterly Technical Report for DOE Cooperative Agreement No: DE-FC26-00NT41047. The goal of the project is to develop and demonstrate a computational workbench for simulating the performance of Vision 21 Power Plant Systems. Within the last quarter, good progress has been made on the development of our IGCC workbench. Preliminary CFD simulations for single stage and two stage ''generic'' gasifiers using firing conditions based on the Vision 21 reference configuration have been performed. Work is continuing on implementing an advanced slagging model into the CFD based gasifier model. An investigation into published gasification kinetics has highlighted a wide variance in predicted performance due to the choice of kinetic parameters. A plan has been outlined for developing the reactor models required to simulate the heat transfer and gas clean up equipment downstream of the gasifier. Three models that utilize the CCA software protocol have been integrated into a version of the IGCC workbench. Tests of a CCA implementation of our CFD code into the workbench demonstrated that the CCA CFD module can execute on a geographically remote PC (linked via the Internet) in a manner that is transparent to the user. Software tools to create ''walk-through'' visualizations of …
Date: April 30, 2002
Creator: Bockelie, Mike; Swensen, Dave & Denison, Martin
Object Type: Report
System: The UNT Digital Library
Defense Inventory: Trends in Services' Spare Parts Purchased from the Defense Logistics Agency (open access)

Defense Inventory: Trends in Services' Spare Parts Purchased from the Defense Logistics Agency

A letter report issued by the General Accounting Office with an abstract that begins "The Defense Logistics Agency (DLA) reported that a shortage of spare parts has caused a decline in the military services' readiness, particularly in aviation readiness. In response, Congress provided $1.1 billion in additional funding to purchase spare parts. According to DLA, shortages are a result of aging systems and high operational tempo, which increase the total number of spare parts required. The number of spare parts the military services ordered declined between 1996 and 2000, but the dollar value increased by 18 percent. Further, spare parts purchased were drawn from 70 of 78 stock groups. Defense officials told GAO that military downsizing was the primary reason for the decline and that credit card usage and contractor maintenance support also contributed. The reasons cited for the increase were (1) DLA shifts to a mix of more expensive spare parts and (2) price increases due to inaccurate initial price estimates, long periods between procurements, and substantial changes in the quantity of spare parts purchased."
Date: April 30, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
Defense Plans: Plan to Better Use Air Force Squadrons Could Yield Benefits but Faces Significant Challenges (open access)

Defense Plans: Plan to Better Use Air Force Squadrons Could Yield Benefits but Faces Significant Challenges

A letter report issued by the General Accounting Office with an abstract that begins "The Air Force expeditionary aerospace force concept seeks to spread deployments more evenly across its forces and increase the predictability of deployments. By dual-tasking some fighter squadrons the Air Force could fulfill two requirements as the 2010 Concept envisions. Although significant challenges could impede the ability to maximize these benefits, the Air Force has not specifically analyzed what is needed to implement dual-tasking by 2010. Dual-tasking would result in more efficient use of squadrons and greatly reduce the need to use squadrons for more than one 90-day deployment every 15 months. Dual-tasking would provide theater commanders with the same number of aircraft to meet requirements as under current practice; however, the aircraft would come from fewer squadrons. Because a larger proportion of a squadron's aircraft would be used to meet requirements, and because dual-tasking uses fewer squadrons to meet requirements, the need to repeatedly use the same squadrons would be reduced. The number of squadrons needed for more than one 90-day period over a 15-month period would decline from 26 squadrons to five. More training would be required under dual-tasking. Yet, the Air Force has not …
Date: April 30, 2002
Creator: United States. General Accounting Office.
Object Type: Report
System: The UNT Digital Library
DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT (open access)

DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT

Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.
Date: April 30, 2002
Creator: Baskin, Kathryn
Object Type: Report
System: The UNT Digital Library
DEVELOPMENT OF A VALIDATED MODEL FOR USE IN MINIMIZING NOx EMISSIONS AND MAXIMIZING CARBON UTILIZATION WHEN CO-FIRING BIOMASS WITH COAL (open access)

DEVELOPMENT OF A VALIDATED MODEL FOR USE IN MINIMIZING NOx EMISSIONS AND MAXIMIZING CARBON UTILIZATION WHEN CO-FIRING BIOMASS WITH COAL

This is the sixth Quarterly Technical Report for DOE Cooperative Agreement No. DE-FC26-00NT40895. A statement of the project objectives is included in the Introduction of this report. Two additional biomass co-firing test burns were conducted during this quarter. In the first test (Test 10), up to 20% by weight dry hardwood sawdust and switchgrass was compiled with Galatia coal and injected through the dual-register burner. Galatia coal is a medium-sulfur Illinois Basin coal ({approx}1.0% S). The dual-register burner is a generic low-NO{sub x} burner that incorporates two independent wind boxes. In the second test (Test 11), regular ({approx}70% passing 200 mesh) and finely ground ({approx}90% passing 200 mesh) Pratt Seam coal was injected through the single-register burner to determine if coal grind affects NO{sub x} and unburned carbon emissions. The results of these tests are presented in this quarterly report. Significant progress has been made in implementing a modeling approach to combine reaction times and temperature distributions from computational fluid dynamic models of the pilot-scale combustion furnace with char burnout and chemical reaction kinetics to predict NO{sub x} emissions and unburned carbon levels in the furnace exhaust. No additional results of CFD modeling have been received as delivery of the …
Date: April 30, 2002
Creator: Felix, Larry G. & Bush, P. Vann
Object Type: Report
System: The UNT Digital Library
Development of New Thermodynamic Cycles (open access)

Development of New Thermodynamic Cycles

In general, optimization is a way to find the best solution to a problem of any kind. We do a lot of optimization in our daily life. For example, we always search for the best product, which meets our demands, with the lowest possible price. In engineering, optimization is a very powerful tool. There is usually more than one acceptable solution to an engineering problem. The goal of an engineer is to find the best one. When there are more than a few acceptable solutions, it may be simply impossible to compare them by hand. More sophisticated mathematical methods have been developed to help find the best solution.
Date: April 30, 2002
Creator: Goswami, D. Yogi
Object Type: Report
System: The UNT Digital Library
Drug Certification Requirements and Congressional Modifications in 2001-2002 (open access)

Drug Certification Requirements and Congressional Modifications in 2001-2002

This report provides a brief summary of the existing drug certification requirements for drug producing and drug-transit countries, background on the experience, criticisms, and reform efforts under these provisions; a summary of early congressional options and proposals advanced in 2001, with possible advantages and disadvantages; a summary of later initiatives with legislative activity; and (5) a tracking of legislative action on the major initiatives.
Date: April 30, 2002
Creator: Storrs, K. Larry
Object Type: Report
System: The UNT Digital Library
Energy Efficiency and Electric System Reliability (open access)

Energy Efficiency and Electric System Reliability

OAK B188 Energy Efficiency and Electric System Reliability
Date: April 30, 2002
Creator: Kushler, Martin; Vine, Ed & York, Dan
Object Type: Report
System: The UNT Digital Library