3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, Wind River Reservation, Arapaho and Shoshone Tribes, Wyoming (open access)

3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, Wind River Reservation, Arapaho and Shoshone Tribes, Wyoming

This report describes the results made in fulfillment of contract DE-FG26-00BC15190, ''3-D Reservoir and Stochastic Fracture Network Modeling for Enhanced Oil Recovery, Circle Ridge Phosphoria/Tensleep Reservoir, Wind River Reservation, Arapaho and Shoshone Tribes, Wyoming''. The goal of this project is to improve the recovery of oil from the Tensleep and Phosphoria Formations in Circle Ridge Oilfield, located on the Wind River Reservation in Wyoming, through an innovative integration of matrix characterization, structural reconstruction, and the characterization of the fracturing in the reservoir through the use of discrete fracture network models. Fields in which natural fractures dominate reservoir permeability, such as the Circle Ridge Field, often experience sub-optimal recovery when recovery processes are designed and implemented that do not take advantage of the fracture systems. For example, a conventional waterflood in a main structural block of the Field was implemented and later suspended due to unattractive results. It is estimated that somewhere less than 20% of the OOIP in the Circle Ridge Field have been recovered after more than 50 years' production. Marathon Oil Company identified the Circle Ridge Field as an attractive candidate for several advanced IOR processes that explicitly take advantage of the natural fracture system. These processes require …
Date: November 18, 2002
Creator: La Pointe, Paul; Hermanson, Jan; Parney, Robert; Eiben, Thorsten; Dunleavy, Mike; Steele, Ken et al.
Object Type: Report
System: The UNT Digital Library
3-Dimensional Flow Modeling of a Proposed Hanford Waste Treatment Plant Ion-Exchange Column Design (open access)

3-Dimensional Flow Modeling of a Proposed Hanford Waste Treatment Plant Ion-Exchange Column Design

Historically, it has been assumed that the inlet and outlet low activity waste plenums would be designed such that a nearly uniform velocity profile would be maintained at every axial cross-section (i.e., providing nearly 100 percent use of the resin bed). With this proposed design, we see a LAW outlet distributor that results in significant non-axial velocity gradients in the bottom regions of the bed with the potential to reduce the effectiveness'' of the overall resin bed. The magnitude of this efficiency reduction depends upon how far up-gradient of the LAW outlet these non-axial velocities persist and to what extent a ''dead-zone'' is established beneath the LAW outlet. This can impact loading and elution performance of the ion-exchange facility. Currently, no experimental studies are planned. The primary objective of this work was, through modeling, to assess the fluid dynamic impact on ''effective'' resin volume of the full-scale column based on its normal operation using a recently proposed LAW outlet distributor. The analysis effort was limited to 3-D flow only analyses (i.e., no follow on transport analyses) with 3-D particle tracking to approximate the impact that a nonaxial velocity profile would have on bed ''effectiveness''. Additional analyses were performed to estimate …
Date: November 2002
Creator: Aleman, Sebastian
Object Type: Report
System: The UNT Digital Library
20% Partial Siberian Snake in the AGS. (open access)

20% Partial Siberian Snake in the AGS.

An 11.4% partial Siberian snake was used to successfully accelerate polarized proton through a strong intrinsic depolarizing spin resonance in the AGS. No noticeable depolarization was observed. This opens up the possibility of using a 20% to 30% partial Siberian snake in the AGS to overcome all weak and strong depolarizing spin resonances. Some design and operation issues of the new partial Siberian snake are discussed.
Date: November 6, 2002
Creator: Huang, H.; Bai, M.; Brown, K. A.; Glenn, W.; Luccio, A. U.; MacKay, W. W. et al.
Object Type: Article
System: The UNT Digital Library
300 Area Uranium Leach and Adsorption Project (open access)

300 Area Uranium Leach and Adsorption Project

The objective of this study was to measure the leaching and adsorption characteristics of uranium in six near-surface sediment samples collected from the 300 Area of the Hanford Site. Scanning electron micrographs of the samples showed that the uranium contamination in the sediments is most likely present as co-precipitates and/or discrete uranium particles. Molecular probe techniques also confirm the presence of crystalline discrete uranium bearing phases. In all cases, the uranium is present as oxidized uranium (uranyl [U(VI)]). Results from the column leach tests showed that uranium leaching did not follow a constant solubility paradigm. Four of the five contaminated sediments showed a large near instantaneous release of a few percent of the total uranium followed by a slower continual release. Steady-state uranium leachate concentrations were never measured and leaching characteristics and trends were not consistent among the samples. Dissolution kinetics were slow, and the measured leach curves most likely represent a slow kinetically controlled desorption or dissolution paradigm. Batch adsorption experiments were performed to investigate the effect of pH and uranium and carbonate solution concentrations on uranium adsorption onto the uncontaminated sediment. Uranium adsorption Kd values ranged from 0 to > 100 ml/g depending on which solution parameter was …
Date: November 26, 2002
Creator: Serne, R. Jeffrey; Brown, Christopher F.; Schaef, Herbert T.; Pierce, Eric M.; Lindberg, Michael J.; Wang, Zheming et al.
Object Type: Report
System: The UNT Digital Library
2003 International High-Level Radioactive Waste Management Conference Breached Drip Shield Test and Validation of a TSPA Sub-Model (open access)

2003 International High-Level Radioactive Waste Management Conference Breached Drip Shield Test and Validation of a TSPA Sub-Model

The Engineered Barrier System (EBS) represents the system of human engineered barriers in the isolation of high-level radioactive waste in the proposed repository at Yucca Mountain. It is designed to complement and enhance the natural barriers to isolate and prevent the transport of radionuclides into the surrounding environment. The transport mechanism most frequently postulated for radionuclides is liquid water flux that has penetrated the EBS through corrosion breaches in the drip shield and waste packages (WP). A water flux-splitting model is used to predict flow through WP and drip shield breaches and is documented in the ''EBS Radionuclide Transport Abstraction''. A future revision of the ''EBS Radionuclide Transport Abstraction'' will be one component of the total system performance assessment--license application (TSPA-LA) for the Yucca Mountain repository. The flux-splitting model is conservative based on the following assumptions: (1) Drip impact occurs without a loss of water mass. (2) Dripping flux falls exactly at the crown of the drip shield as opposed to different locations on the curved surface, which will effect splashing and flow patterns. (3) The flux passing through a drip shield patch is proportional to the ratio of the length of the penetration in the axial direction to the …
Date: November 22, 2002
Creator: Walton, Z.P. & Kam, J.T.
Object Type: Report
System: The UNT Digital Library
Abortion Services and Military Medical Facilities (open access)

Abortion Services and Military Medical Facilities

The purpose of this report is to describe and discuss the provisions for providing abortion services to military personnel, their dependents, and other military health care beneficiaries at military medical facilities. The report describes the history of these provisions, with particular emphasis on legislative actions. Finally, this report discusses a number of proposals to modify the law, as well as other related legislative and administrative actions.
Date: November 24, 2002
Creator: Burrelli, David F.
Object Type: Report
System: The UNT Digital Library
Abortion Services and Military Medical Facilities (open access)

Abortion Services and Military Medical Facilities

The purpose of this report is to describe and discuss the provisions for providing abortion services to military personnel, their dependents and other military health care beneficiaries at military medical facilities. The report describes the history of these provisions, with particular emphasis on legislative actions. Finally, this report discusses a number of proposals to modify the Clinton Administration provisions, as well as recently enacted legislation.
Date: November 24, 2002
Creator: Burrelli, David F.
Object Type: Report
System: The UNT Digital Library
Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: April-June 2002 (open access)

Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: April-June 2002

During the sixth quarter of this research project the research team developed a method and the experimental procedures for acquiring the data needed for ultrasonic tomography of rock core samples under triaxial stress conditions as outlined in Task 10. Traditional triaxial compression experiments, where compressional and shear wave velocities are measured, provide little or no information about the internal spatial distribution of mechanical damage within the sample. The velocities measured between platen-to-platen or sensor-to-sensor reflects an averaging of all the velocities occurring along that particular raypath across the boundaries of the rock. The research team is attempting to develop and refine a laboratory equivalent of seismic tomography for use on rock samples deformed under triaxial stress conditions. Seismic tomography, utilized for example in crosswell tomography, allows an imaging of the velocities within a discrete zone within the rock. Ultrasonic or acoustic tomography is essentially the extension of that field technology applied to rock samples deforming in the laboratory at high pressures. This report outlines the technical steps and procedures for developing this technology for use on weak, soft chalk samples. Laboratory tests indicate that the chalk samples exhibit major changes in compressional and shear wave velocities during compaction. Since chalk …
Date: November 18, 2002
Creator: Scott, Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Object Type: Report
System: The UNT Digital Library
Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: July-September 2002 (open access)

Acoustical Imaging and Mechanical Properties of Soft Rock and Marine Sediments Progress Report: July-September 2002

During the seven quarter of the project the research team analyzed some of the acoustic velocity data and rock deformation data. The goal is to create a series of ''deformation-velocity maps'' which can outline the types of rock deformational mechanisms which can occur at high pressures and then associate those with specific compressional or shear wave velocity signatures. During this quarter, we began to analyze both the acoustical and deformational properties of the various rock types. Some of the preliminary velocity data from the Danian chalk will be presented in this report. This rock type was selected for the initial efforts as it will be used in the tomographic imaging study outlined in Task 10. This is one of the more important rock types in the study as the Danian chalk is thought to represent an excellent analog to the Ekofisk chalk that has caused so many problems in the North Sea. Some of the preliminary acoustic velocity data obtained during this phase of the project indicates that during pore collapse and compaction of this chalk, the acoustic velocities can change by as much as 200 m/s. Theoretically, this significant velocity change should be detectable during repeated successive 3-D seismic …
Date: November 18, 2002
Creator: Scott, Thurman E., Jr.; Abousleiman, Younane & Zaman, Musharraf
Object Type: Report
System: The UNT Digital Library
Acts -- A collection of high performing software tools for scientific computing (open access)

Acts -- A collection of high performing software tools for scientific computing

During the past decades there has been a continuous growth in the number of physical and societal problems that have been successfully studied and solved by means of computational modeling and simulation. Further, many new discoveries depend on high performance computer simulations to satisfy their demands for large computational resources and short response time. The Advanced CompuTational Software (ACTS) Collection brings together a number of general-purpose computational tool development projects funded and supported by the U.S. Department of Energy (DOE). These tools make it easier for scientific code developers to write high performance applications for parallel computers. They tackle a number of computational issues that are common to a large number of scientific applications, mainly implementation of numerical algorithms, and support for code development, execution and optimization. The ACTS collection promotes code portability, reusability, reduction of duplicate efforts, and tool maturity. This paper presents a brief introduction to the functionality available in ACTS. It also highlight the tools that are in demand by Climate and Weather modelers.
Date: November 1, 2002
Creator: Drummond, L. A. & Marques, O. A.
Object Type: Article
System: The UNT Digital Library
Advanced Chemistry Basins Model (open access)

Advanced Chemistry Basins Model

The DOE-funded Advanced Chemistry Basin model project is intended to develop a public domain, user-friendly basin modeling software under PC or low end workstation environment that predicts hydrocarbon generation, expulsion, migration and chemistry. The main features of the software are that it will: (1) afford users the most flexible way to choose or enter kinetic parameters for different maturity indicators; (2) afford users the most flexible way to choose or enter compositional kinetic parameters to predict hydrocarbon composition (e.g., gas/oil ratio (GOR), wax content, API gravity, etc.) at different kerogen maturities; (3) calculate the chemistry, fluxes and physical properties of all hydrocarbon phases (gas, liquid and solid) along the primary and secondary migration pathways of the basin and predict the location and intensity of phase fractionation, mixing, gas washing, etc.; and (4) predict the location and intensity of de-asphaltene processes. The project has be operative for 36 months, and is on schedule for a successful completion at the end of FY 2003.
Date: November 10, 2002
Creator: Goddard, William; Blanco, Mario; Cathles, Lawrence; Manhardt, Paul; Meulbroek, Peter & Tang, Yongchun
Object Type: Report
System: The UNT Digital Library
Advanced Direct Liquefaction Concepts Program Phase II (open access)

Advanced Direct Liquefaction Concepts Program Phase II

This report addresses the advanced direct liquefaction concepts program.
Date: November 30, 2002
Creator: Hu, J. L. & Lee, L. K.
Object Type: Report
System: The UNT Digital Library
Advanced pulse-shape analysis and implementation of gamma-ray tracking in a position-sensitive coaxial HPGe detector (open access)

Advanced pulse-shape analysis and implementation of gamma-ray tracking in a position-sensitive coaxial HPGe detector

None
Date: November 12, 2002
Creator: Kuhn, Austin L.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
ADVANCED TECHNOLOGIES FOR STRIPPER GAS WELL ENHANCEMENT (open access)

ADVANCED TECHNOLOGIES FOR STRIPPER GAS WELL ENHANCEMENT

As part of Task 1 in Advanced Technologies for Stripper Gas Well Enhancement, Schlumberger Data & Consulting Services (DCS) joined with two Appalachian Basin producers, Great Lakes Energy Partners, LLC, and Belden & Blake Corporation to develop methodologies for identification and enhancement of stripper wells with economic upside potential. These industry partners previously provided us with data for more than 700 wells in northwestern Pennsylvania. Phase 1 goals of this project are to develop and validate methodologies that can quickly and cost-effectively identify wells with enhancement potential. We have enhanced and streamlined our software, and we are using the final version of our new Microsoft{trademark} Access/Excel based software. We have received additional data from Great Lakes pertaining to a Cooperstown field that is expected to have numerous remediation candidates. This field will provide a rigorous test of out software and analytical methods. We have processed all the information available to us before the Cooperstown data was provided. We have identified potential candidate wells that can be used in Phase 2 to validate the new methodologies. In addition, a draft version of a final report has been reviewed by DOE.
Date: November 1, 2002
Creator: MacDonald, Ronald J.
Object Type: Report
System: The UNT Digital Library
Advanced visualization technology for terascale particle accelerator simulations (open access)

Advanced visualization technology for terascale particle accelerator simulations

This paper presents two new hardware-assisted rendering techniques developed for interactive visualization of the terascale data generated from numerical modeling of next generation accelerator designs. The first technique, based on a hybrid rendering approach, makes possible interactive exploration of large-scale particle data from particle beam dynamics modeling. The second technique, based on a compact texture-enhanced representation, exploits the advanced features of commodity graphics cards to achieve perceptually effective visualization of the very dense and complex electromagnetic fields produced from the modeling of reflection and transmission properties of open structures in an accelerator design. Because of the collaborative nature of the overall accelerator modeling project, the visualization technology developed is for both desktop and remote visualization settings. We have tested the techniques using both time varying particle data sets containing up to one billion particle s per time step and electromagnetic field data sets with millions of mesh elements.
Date: November 16, 2002
Creator: Ma, K-L; Schussman, G.; Wilson, B.; Ko, K.; Qiang, J. & Ryne, R.
Object Type: Article
System: The UNT Digital Library
Advancing Technology and Methodology to Streamline Environmental Compliance (open access)

Advancing Technology and Methodology to Streamline Environmental Compliance

By early 2000, fifteen oil and gas State Agencies were using RBDMS or a RBDMS utility to handle a significant amount or all of their data management needs. There are three additional State slated to begin implementation this year. There are an additional twelve State agencies that are not utilizing this technology that have proven to be very useful for so many other States. This project will allow for the base RBDMS install in all State oil and gas agency that desire it.
Date: November 15, 2002
Creator: Grunewald, Ben & Jehn, Paul
Object Type: Report
System: The UNT Digital Library
AES Greenidge Bioethanol Co-Location Assessment: Final Report, 13 November 2001 -- 31 August 2002 (open access)

AES Greenidge Bioethanol Co-Location Assessment: Final Report, 13 November 2001 -- 31 August 2002

This study evaluates the feasibility of co-locating a cellulose-to-ethanol (bioethanol) facility at the existing AES Greenidge coal-fired electric power plant near Dresden, NY.
Date: November 1, 2002
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Affordable Multi-Layer Ceramic (MLC) Manufacturing for Power Systems (AMPS) (open access)

Affordable Multi-Layer Ceramic (MLC) Manufacturing for Power Systems (AMPS)

McDermott Technology, Inc. (MTI) is attempting to develop high-performance, cost-competitive solid oxide fuel cell (SOFC) power systems. Recognizing the challenges and limitations facing the development of SOFC stacks comprised of electrode-supported cells and metallic interconnects, McDermott Technology, Inc. (MTI) has chosen to pursue an alternate path to commercialization. MTI is developing a multi-layer, co-fired, planar SOFC stack that will provide superior performance and reliability at reduced costs relative to competing designs. The MTI approach combines state-of-the-art SOFC materials with the manufacturing technology and infrastructure established for multi-layer ceramic (MLC) packages for the microelectronics industry. The rationale for using MLC packaging technology is that high quality, low-cost manufacturing has been demonstrated at high volumes. With the proper selection of SOFC materials, implementation of MLC fabrication methods offers unique designs for stacks (cells and interconnects) that are not possible through traditional fabrication methods. The MTI approach eliminates use of metal interconnects and ceramic-metal seals, which are primary sources of stack performance degradation. Co-fired cells are less susceptible to thermal cycling stresses by using material compositions that have closely matched coefficients of thermal expansion between the cell and the interconnect. The development of this SOFC stack technology was initiated in October 1999 under …
Date: November 27, 2002
Creator: Barringer, E. A.
Object Type: Report
System: The UNT Digital Library
Agricultural Trade Issues in the 107th Congress (open access)

Agricultural Trade Issues in the 107th Congress

The 107th Congress is considering trade issues with implications for the U.S. agricultural sector. Trade in agricultural commodities and food products affects farm income and rural employment, and it also generates economic activity beyond the farm gate. With agricultural export sales the equivalent of one-quarter of farm income, some policymakers view U.S. efforts to develop market opportunities overseas as vital to the sector’s financial health. Decisions taken by the Bush Administration, and actions taken by Congress, thus will affect the outlook for agricultural trade.
Date: November 7, 2002
Creator: Hanrahan, Charles E.; Becker, Geoffrey S. & Jurenas, Remy
Object Type: Report
System: The UNT Digital Library
Agriculture and Fast Track or Trade Promotion Authority (open access)

Agriculture and Fast Track or Trade Promotion Authority

This report considers the issue of new "fast track" or trade promotion authority (APA) legislation in the 107th Congress. Moreover, the report summarizes the agricultural debates on the issue.
Date: November 7, 2002
Creator: Becker, Geoffrey S. & Hanrahan, Charles E.
Object Type: Report
System: The UNT Digital Library
Agriculture and Fast Track or Trade Promotion Authority (open access)

Agriculture and Fast Track or Trade Promotion Authority

New “fast track,” or trade promotion, authority (TPA) cleared the 107th Congress, and was signed into law (P.L. 107-210) on August 6, 2002. Such authority enables the Administration to submit negotiated foreign trade agreements to Congress for consideration under expedited procedures. Many agricultural and food industry interests were among the export-oriented enterprises that supported TPA, arguing that foreign trading partners would not seriously negotiate with an Administration that lacked it. However, some farm groups argued that fast track ultimately will lead to new agreements that have adverse effects on U.S. producers, at least of some commodities.
Date: November 7, 2002
Creator: Becker, Geoffrey S. & Hanrahan, Charles E.
Object Type: Report
System: The UNT Digital Library
Agriculture and Fast Track or Trade Promotion Authority (open access)

Agriculture and Fast Track or Trade Promotion Authority

New “fast track,” or trade promotion, authority (TPA) cleared the 107th Congress, and was signed into law (P.L. 107-210) on August 6, 2002. Such authority enables the Administration to submit negotiated foreign trade agreements to Congress for consideration under expedited procedures. Many agricultural and food industry interests were among the export-oriented enterprises that supported TPA, arguing that foreign trading partners would not seriously negotiate with an Administration that lacked it. However, some farm groups argued that fast track ultimately will lead to new agreements that have adverse effects on U.S. producers, at least of some commodities.
Date: November 7, 2002
Creator: Becker, Geoffrey S. & Hanrahan, Charles E.
Object Type: Report
System: The UNT Digital Library
Air pollutant monitoring for the East Bay Children's Respiratory Health Study (open access)

Air pollutant monitoring for the East Bay Children's Respiratory Health Study

This report describes the methodology and presents the summary results of the air pollutant monitoring program conducted by Lawrence Berkeley National Laboratory in support of the East Bay Children's Respiratory Health Study. The full study is examining the effects of chronic exposure to traffic-related pollutants on respiratory health among 3rd and 4th grade children attending ten neighborhood elementary schools in the San Francisco East Bay Area (Hayward, San Leandro and Oakland, CA). The demographically similar schools are located at varying distances from the I-880 and CA-92 freeways. Several schools were selected because they are located within 300 m in the predominant downwind direction (east) from either of the freeways. Measurements of multiple pollutants were made outdoors at the schools over 1-2 week intervals for 14 weeks in spring and eight weeks in fall 2001 using a custom-designed and validated package of commercially available monitoring equipment. Particulate matter was sampled over all hours (24 h per day) or during schools hours only with battery-operated programmable pumps and inlet devices for PM{sub 10} and PM{sub 2.5}. These pumps were modified to allow for up to 10 days of continuous operation. Fine particle mass and black carbon (BC) were determined from the collected …
Date: November 1, 2002
Creator: Singer, Brett C.; Hotchi, Toshifumi & Hodgson, Alfred T.
Object Type: Report
System: The UNT Digital Library
Airport Improvement Program (open access)

Airport Improvement Program

This issue brief discusses the Airport Improvement Program and its complement, the Passenger Facility Charge (PFC). After a brief history of federal support for airport construction and improvement, the report describes AIP funding, its source of revenues, funding distribution, the types of projects the program funds, AIP and PFC policy issues, and the allowable use of AIP funds for airport security purposes.
Date: November 29, 2002
Creator: Kirk, Robert S.
Object Type: Report
System: The UNT Digital Library