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Field Demonstration of a Membrane Process to Separate Nitrogen from Natural Gas
The original proposal described the construction and operation of a 1 MMscfd treatment system to be operated at a Butcher Energy gas field in Ohio. The gas produced at this field contained 17% nitrogen. During pre-commissioning of the project, a series of well tests showed that the amount of gas in the field was significantly smaller than expected and that the nitrogen content of the wells was very high (25 to 30%). After evaluating the revised cost of the project, Butcher Energy decided that the plant would not be economical and withdrew from the project. Since that time, Membrane Technology and Research, Inc. (MTR) has signed a marketing and sales partnership with ABB Lummus Global, a large multinational corporation. MTR is working with the company's Randall Gas Technology group, a supplier of equipment and processing technology to the natural gas industry. Randall's engineering group found a new site for the project at a North Texas Exploration (NTE) gas processing plant, which met with limited success. MTR then located an alternative testing opportunity and signed a contract with Towne Exploration in the third quarter of 2006, for a demonstration plant in Rio Vista, CA, to be run through May 2007. The …
Date:
March 31, 2007
Creator:
Lokhandwala, Kaaeid
Object Type:
Report
System:
The UNT Digital Library
Final Project Report, Bristol Bay Native Corporation Wind and Hydroelectric Feasibility Study
The Bristol Bay Native Corporation (BBNC) grant project focused on conducting nine wind resource studies in eight communities in the Bristol Bay region of southwest Alaska and was administered as a collaborative effort between BBNC, the Alaska Energy Authority, Alaska Village Electric Cooperative, Nushagak Electric Cooperative (NEC), Naknek Electric Association (NEA), and several individual village utilities in the region. BBNC’s technical contact and the project manager for this study was Douglas Vaught, P.E., of V3 Energy, LLC, in Eagle River, Alaska. The Bristol Bay region of Alaska is comprised of 29 communities ranging in size from the hub community of Dillingham with a population of approximately 3,000 people, to a few Native Alaska villages that have a few tens of residents. Communities chosen for inclusion in this project were Dillingham, Naknek, Togiak, New Stuyahok, Kokhanok, Perryville, Clark’s Point, and Koliganek. Selection criteria for conduction of wind resource assessments in these communities included population and commercial activity, utility interest, predicted Class 3 or better wind resource, absence of other sources of renewable energy, and geographical coverage of the region. Beginning with the first meteorological tower installation in October 2003, wind resource studies were completed at all sites with at least one …
Date:
March 31, 2007
Creator:
Vaught, Douglas J.
Object Type:
Report
System:
The UNT Digital Library
Final Report -- Center for Programmng Models for Scalable Parallel Computing (UIUC subgroup)
The mission of the Center for Scalable Programming Models (Pmodels) was to create new ways of programming parallel computers that are much easier for humans to conceptualize, that allow programs to be written, updated and debugged quickly, and that run extremely efficiently---even on computers with thousands or even millions of processors. At UIUC, our work for Pmodels focused on support for I/O in a massively parallel environment, and included both research and technology transfer activities.
Date:
March 31, 2007
Creator:
Winslett, Marianne & Folk, Michael
Object Type:
Report
System:
The UNT Digital Library
Final Report - Navajo Electrification Demonstration Project - FY2004
The Navajo Electrification Demonstration Project (NEDP) is a multi-year projects which addresses the needs of unserved Navajo Nation residents without basic electricity services. The Navajo Nation is the United States' largest tribe, in terms of population and land. An estimated 18,000 Navajo Nation homes do not have basic grid-tied electricity--and this third year of funding, known as NEDP-3, provided 351 power line extensions to Navajo families.
Date:
March 31, 2007
Creator:
Kenneth L. Craig, Interim General Manager
Object Type:
Report
System:
The UNT Digital Library
Flame Synthesis of Carbon Nanotubes Using Low Calorific Value Gases
Nanostructures formed in diffusion flames of pure fuels [CH{sub 4}, C{sub 3}H{sub 8}, and C{sub 2}H{sub 2}] at different fuel flow rates have been analyzed. Synthesis samples have been also collected from diffusion flames of various fuel blends [H{sub 2}-CH{sub 4}, H{sub 2}-CO, H{sub 2}-C{sub 3}H{sub 8}, H{sub 2}-C{sub 2}H{sub 2}] at different combustion conditions. SEM images of particulate samples collected from H{sub 2}-CH{sub 4} diffusion flames show formation of nanostructures. However, the formation of nanostructures only occurs at a narrow window of fuel compositions (< 10% H{sub 2} concentration in the mixture) and flow conditions (Jet Exit Reynolds number Re{sub j} = 200). At higher H{sub 2} concentration and flow velocity, formation of nanostructures diminishes and H{sub 2}-CH{sub 4} flames produce amorphous carbon and soot particles.
Date:
March 31, 2007
Creator:
Camacho, Jorge; Subramanya, Mahesh & Choudhuri, Ahsan R.
Object Type:
Report
System:
The UNT Digital Library
Fluidized Bed Steam Reformed Mineral Waste Forms: Characterization and Durability Testing
Fluidized Bed Steam Reforming (FBSR) is being considered as a potential technology for the immobilization of a wide variety of high sodium low activity wastes (LAW) such as those existing at the Hanford site, at the Idaho National Laboratory (INL), and the Savannah River Site (SRS). The addition of clay, charcoal, and a catalyst as co-reactants with the waste denitrates the aqueous wastes and forms a granular mineral waste form that can subsequently be made into a monolith for disposal if necessary. The waste form produced is a multiphase mineral assemblage of Na-Al-Si (NAS) feldspathoid minerals with cage and ring structures and iron bearing spinel minerals. The mineralization occurs at moderate temperatures between 650-750 C in the presence of superheated steam. The cage and ring structured feldspathoid minerals atomically bond radionuclides like Tc-99 and Cs-137 and anions such as SO4, I, F, and Cl. The spinel minerals stabilize Resource Conservation and Recovery Act (RCRA) hazardous species such as Cr and Ni. Granular mineral waste forms were made from (1) a basic Hanford Envelope A low-activity waste (LAW) simulant and (2) an acidic INL simulant commonly referred to as sodium bearing waste (SBW) in pilot scale facilities at the Science Applications …
Date:
March 31, 2007
Creator:
Jantzen, Carol M.; Lorier, Troy H.; Pareizs, John M. & Marra, James C.
Object Type:
Article
System:
The UNT Digital Library
Friction Reduction for Microhole CT Drilling
The objective of this 24 month project focused on improving microhole coiled tubing drilling bottom hole assembly (BHA) reliability and performance, while reducing the drilling cost and complexity associated with inclined/horizontal well sections. This was to be accomplished by eliminating the need for a downhole drilling tractor or other downhole coiled tubing (CT) friction mitigation techniques when drilling long (>2,000 ft.) of inclined/horizontal wellbore. The technical solution to be developed and evaluated in this project was based on vibrating the coiled tubing at surface to reduce the friction along the length of the downhole CT drillstring. The Phase 1 objective of this project centered on determining the optimum surface-applied vibration system design for downhole CT friction mitigation. Design of the system would be based on numerical modeling and laboratory testing of the CT friction mitigation achieved with various types of surface-applied vibration. A numerical model was developed to predict how far downhole the surface-applied vibration would travel. A vibration test fixture, simulating microhole CT drilling in a horizontal wellbore, was constructed and used to refine and validate the numerical model. Numerous tests, with varying surface-applied vibration parameters were evaluated in the vibration test fixture. The data indicated that as long …
Date:
March 31, 2007
Creator:
Newman, Ken; Kelleher, Patrick & Smalley, Edward
Object Type:
Report
System:
The UNT Digital Library
Gas Storage Technology Consortium
Gas storage is a critical element in the natural gas industry. Producers, transmission and distribution companies, marketers, and end users all benefit directly from the load balancing function of storage. The unbundling process has fundamentally changed the way storage is used and valued. As an unbundled service, the value of storage is being recovered at rates that reflect its value. Moreover, the marketplace has differentiated between various types of storage services and has increasingly rewarded flexibility, safety, and reliability. The size of the natural gas market has increased and is projected to continue to increase towards 30 trillion cubic feet (TCF) over the next 10 to 15 years. Much of this increase is projected to come from electric generation, particularly peaking units. Gas storage, particularly the flexible services that are most suited to electric loads, is crucial in meeting the needs of these new markets. To address the gas storage needs of the natural gas industry, an industry-driven consortium was created - the Gas Storage Technology Consortium (GSTC). The objective of the GSTC is to provide a means to accomplish industry-driven research and development designed to enhance the operational flexibility and deliverability of the nation's gas storage system, and provide …
Date:
March 31, 2007
Creator:
Morrison, Joel L. & Elder, Sharon L.
Object Type:
Report
System:
The UNT Digital Library
Health Physics Enrollents and Degrees Survey, 2006 Data
This annual survey collects 2006 data on the number of health physics degrees awarded as well as the number of students enrolled in health physics academic programs. Thirty universities offer health physics degrees; all responded to the survey.
Date:
March 31, 2007
Creator:
Education, Oak Ridge Institute for Science and
Object Type:
Report
System:
The UNT Digital Library
Heat of Dissolution Measurements for CO2 in Mixed Alkanolamine Solvents
The main objective of this project is to measure heat of dissolution of CO{sub 2} in carefully selected mixed alkanolamine solvent systems, and provide such directly measured data that might be used for efficient design of CO{sub 2} capture processes, or for better understanding of thermodynamics of CO{sub 2}- alkanolamine systems. Carbon dioxide is one of the major greenhouse gases, and the need for stabilization of its composition in earth's atmosphere is vital for the future of mankind. Although technologies are available for capture and storage of CO{sub 2}, these technologies are far too expensive for economical commercialization. Reduction of cost would require research for refinement of the technology. For more economical CO{sub 2} capture and regeneration, there is a need for development of more efficient solvent systems. In this project we will extend the thermodynamic database by measuring heat of solution data of CO{sub 2} in mixed solvents made of MEA (monoethanolamine), MDEA (methyldiethanolamine), piperazine, and water. Mixed solvents of different compositions will be selected and in each case data will be measured at temperatures 40 and 80C and various partial pressures of CO{sub 2}. At the end of the project, observations, conclusions, and recommendations will be derived for …
Date:
March 31, 2007
Creator:
Kabadi, Vinayak N.
Object Type:
Report
System:
The UNT Digital Library
Heavy Oil Process Monitor: Automated On-Column Asphaltene Precipitation and Re-Dissolution
An automated separation technique was developed that provides a new approach to measuring the distribution profiles of the most polar, or asphaltenic components of an oil, using a continuous flow system to precipitate and re-dissolve asphaltenes from the oil. Methods of analysis based on this new technique were explored. One method based on the new technique involves precipitation of a portion of residua sample in heptane on a polytetrafluoroethylene-packed (PTFE) column. The precipitated material is re-dissolved in three steps using solvents of increasing polarity: cyclohexane, toluene, and methylene chloride. The amount of asphaltenes that dissolve in cyclohexane is a useful diagnostic of the thermal history of oil, and its proximity to coke formation. For example, about 40 % (w/w) of the heptane asphaltenes from unpyrolyzed residua dissolves in cyclohexane. As pyrolysis progresses, this number decrease to below 15% as coke and toluene insoluble pre-coke materials appear. Currently, the procedure for the isolation of heptane asphaltenes and the determination of the amount of asphaltenes soluble in cyclohexane spans three days. The automated procedure takes one hour. Another method uses a single solvent, methylene chloride, to re-dissolve the material that precipitates on heptane on the PTFE-packed column. The area of this second …
Date:
March 31, 2007
Creator:
Schabron, John F.; Rovani, Joseph F. & Sanderson, Mark
Object Type:
Report
System:
The UNT Digital Library
Hybrid 240 Ton Off Highway Haul Truck: Quarterly Technical Status Report 18
This eighteenth quarterly status report for the Hybrid Off Highway Vehicle (OHV) project, DOE Award DE-FC04-02AL68080 presents the project status at the end of March 2007, and covers activities in the eighteenth project quarter, January 2007 – March 2007.
Date:
March 31, 2007
Creator:
Richter, Tim
Object Type:
Report
System:
The UNT Digital Library
Hydrogen Production via a Commercially Ready
The commercial stainless steel (SS) porous substrate (i.e., ZrO{sub 2}/SS from Pall Corp.) was evaluated comprehensively as substrate for the deposition of the CMS membrane for hydrogen separation. The CMS membrane synthesis protocol we developed originally for the ceramic substrate was adapted here for the stainless steel substrate. Unfortunately no successful hydrogen selective membranes had been prepared during Yr I of this project. The characterization results indicated two major sources of defect present in the stainless steel substrate, which may contribute to the poor CMS membrane quality. They include (i) leaking from the crimp boundary of the stainless steel substrate, and (ii) the delamination of the ZrO{sub 2} layer deposited on the stainless steel substrate during CMS membrane preparation. Recently a new batch of the stainless steel substrate (as the 2nd generation product) was received from the supplier. Our characterization results confirm that leaking of the crimp boundary no longer exists. The thermal stability of the ZrO{sub 2}/stainless steel substrate under the CMS membrane preparation condition will be evaluated during the remaining period of the project. Our goal here is to determine the suitability of the 2nd generation ZrO{sub 2}/SS as substrate for the preparation of the CMS membrane for …
Date:
March 31, 2007
Creator:
Liu, Paul K. T.
Object Type:
Report
System:
The UNT Digital Library
Improved Catalysts for Heavy Oil Upgrading Based on Zeolite Y Nanoparticles Encapsulated Stable Nanoporous Host
The addition of hydrothermally-aged zeolite Y precursor to an SBA-15 synthesis mixture under a mildly acidic condition resulted in the formation of a mesoporous aluminosilicate catalyst, AlSBA-15. The Al-SBA-15 mesoporous catalyst contains strong Br{umlt o}nsted acid sites and aluminum (Al) stabilized in a totally tetrahedral coordination. The physicochemical characteristics of the catalyst varied as a function of the synthesis conditions. The catalyst possessed surface areas ranging between 690 and 850 m{sup 2}/g, pore sizes ranging from 5.6 to 7.5 nm, and pore volumes up 1.03 cm{sup 3}, which were comparable to the parent SBA-15 synthesized under similar conditions. Two wt % Al was present in the catalyst that was obtained from the reaction mixture that contained the highest Al content. The Al remained stable in totally tetrahedral coordination after calcination at a temperature of 550 C. The Al-SBA-15 mesoporous catalyst showed significant catalytic activity for cumene dealkylation, and the activity increased as the amount of zeolite precursor added to the SBA-15 mixture was increased. In preparation for the final phase of the project, the catalyst was embedded into a psuedoboemite alumina (catapal B) matrix and then formed into pellets. In the final phase of the project, the pelletized catalyst is …
Date:
March 31, 2007
Creator:
Ingram, Conrad & Mitchell, Mark
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
For two consecutive years, 2004 and 2005, the largest natural gas well (in terms of gas flow/day) drilled onshore USA targeted the Ordovician Trenton/Black River (T/BR) play in the Appalachian Basin of New York State (NYS). Yet, little data were available concerning the characteristics of the play, or how to recognize and track T/BR prospects across the region. Traditional exploration techniques for entry into a hot play were of limited use here, since existing deep well logs and public domain seismic were almost non-existent. To help mitigate this problem, this research project was conceived with two objectives: (1) to demonstrate that integrative traditional and innovative techniques could be used as a cost-effective reconnaissance exploration methodology in this, and other, areas where existing data in targeted fracture-play horizons are almost non-existent, and (2) determine critical characteristics of the T/BR fields. The research region between Seneca and Cayuga lakes (in the Finger Lakes of NYS) is on strike and east of the discovery fields, and the southern boundary of the field area is about 8 km north of more recently discovered T/BR fields. Phase I, completed in 2004, consisted of integrating detailed outcrop fracture analyses with detailed soil gas analyses, lineaments, stratigraphy, …
Date:
March 31, 2007
Creator:
Jacobi, Robert; Fountain, John; Loewenstein, Stuart; DeRidder, Edward & Hart, Bruce
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fracture-Controlleed Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Innovative Methodology for Detection of Fractured-Controlled Sweet Spots in the Northern Appalachian Basin
None
Date:
March 31, 2007
Creator:
Jacobi, Robert
Object Type:
Report
System:
The UNT Digital Library
Interwell Connectivity and Diagnosis Using Correlation of Production and Injection Rate Data in Hydrocarbon Production
This report details progress and results on inferring interwell communication from well rate fluctuations. Starting with the procedure of Albertoni and Lake (2003) as a foundation, the goal of the project was to develop further procedures to infer reservoir properties through weights derived from correlations between injection and production rates. A modified method, described in Yousef and others (2006a,b), and herein referred to as the 'capacitance model', is the primary product of this research project. The capacitance model (CM) produces two quantities, {lambda} and {tau}, for each injector-producer well pair. For the CM, we have focused on the following items: (1) Methods to estimate {lambda} and {tau} from simulated and field well rates. The original method uses both non-linear and linear regression and lacks the ability to include constraints on {lambda} and {tau}. The revised method uses only non-linear regression, permitting constraints to be included as well as accelerating the solution so that problems with large numbers of wells are more tractable. (2) Approaches to integrate {lambda} and {tau} to improve connectivity evaluations. Interpretations have been developed using Lorenz-style and log-log plots to assess heterogeneity. Testing shows the interpretations can identify whether interwell connectivity is controlled by flow through fractures, …
Date:
March 31, 2007
Creator:
Jensen, Jerry L.; Lake, Larry W.; Al-Yousef, Ali; Weber, Dan; Liang, Ximing; Edgar, T.F. et al.
Object Type:
Report
System:
The UNT Digital Library