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Seismic imaging of reservoir flow properties: Resolving waterinflux and reservoir permeability
Methods for geophysical model assessment, in particuale thecomputation of model parameter resolution, indicate the value and thelimitations of time-lapse data in estimating reservoir flow properties. Atrajectory-based method for computing sensitivities provides an effectivemeans to compute model parameter resolutions. We examine the commonsituation in which water encroaches into a resrvoir from below, as due tothe upward movement of an oil-water contact. Using straight-forwardtechniques we find that, by inclusing reflections off the top and bottomof a reservoir tens of meters thick, we can infer reservoir permeabilitybased upon time-lapse data. We find that, for the caseof water influxfrom below, using multiple time-lapse 'snapshots' does not necessarilyimprove the resolution of reservoir permeability. An application totime-lapse data from the Norne field illustrates that we can resolve thepermeability near a producing well using reflections from threeinterfaces associated with the reservoir.
Date:
November 27, 2006
Creator:
Vasco, D.W. & Keers, Henk
Object Type:
Article
System:
The UNT Digital Library
USE of Mine Pool Water for Power Plant Cooling.
Water and energy production issues intersect in numerous ways. Water is produced along with oil and gas, water runs off of or accumulates in coal mines, and water is needed to operate steam electric power plants and hydropower generating facilities. However, water and energy are often not in the proper balance. For example, even if water is available in sufficient quantities, it may not have the physical and chemical characteristics suitable for energy or other uses. This report provides preliminary information about an opportunity to reuse an overabundant water source--ground water accumulated in underground coal mines--for cooling and process water in electric generating facilities. The report was funded by the U.S. Department of Energy's (DOE's) National Energy Technology Laboratory (NETL), which has implemented a water/energy research program (Feeley and Ramezan 2003). Among the topics studied under that program is the availability and use of ''non-traditional sources'' of water for use at power plants. This report supports NETL's water/energy research program.
Date:
November 27, 2006
Creator:
Veil, J. A.; Kupar, J. M . & Puder, M. G.
Object Type:
Report
System:
The UNT Digital Library
Veterans’ Medical Care: FY2007 Appropriations
None
Date:
November 27, 2006
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
XMM-Newton Observations of HESSJ1813-178 Reveal a Composite Supernova Remnant
Aims--We present X-ray and {sup 12}CO(J=1-0) observations of the very-high-energy (VHE) {gamma}-ray source HESS J1813-178 with the aim of understanding the origin of the {gamma}-ray emission. Methods--High-angular resolution X-ray studies of the VHE {gamma}-ray emission region are performed using 18.6 ks of XMM-Newton data, taken on HESS J1813-178 in October 2005. Using this dataset we are able to undertake spectral and morphological studies of the X-ray emission object with greater precision than previous studies. NANTEN {sup 12}CO(J=1-0) data are used to search for correlations of the {gamma}-ray emission with molecular clouds which could act as target material for {gamma}-ray production in a hadronic scenario. Results--The NANTEN {sup 12}CO(J=1-0) observations show a giant molecular cloud of mass 2.5 x 10{sup 5} M{sub {circle_dot}} at a distance of 4 kpc in the vicinity of HESS J1813-178. Even though there is no direct positional coincidence, this giant cloud might have influenced the evolution of the {gamma}-ray source and its surroundings. The X-ray data show a highly absorbed (n{sub H} {approx} 1 x 10{sup 23} cm{sup -2}) non-thermal X-ray emitting object coincident with the previously known ASCA source AXJ1813-178 showing a compact core and an extended tail towards the north-east, located in the center …
Date:
November 27, 2006
Creator:
Funk, S.; Hinton, J. A.; Moriguchi, Y.; Aharonian, F. A.; Fukui, Y.; Hofmann, W. et al.
Object Type:
Article
System:
The UNT Digital Library
Advancing the Science of Natural and Enhanced Attenuation for Chlorinated Solvents
This report summarizes the results of a three-year program that addressed key scientific and technical aspects related to natural and enhanced attenuation of chlorinated organics. The results from this coordinated three-year program support a variety of technical and regulatory advancements. Scientists, regulators, engineers, end-users and stakeholders participated in the program, which was supported by the U.S. Department of Energy (DOE) and the Interstate Technology and Regulatory Council (ITRC). The overarching objective of the effort was to examine environmental remedies that are based on natural processes--remedies such as Monitored Natural Attenuation (MNA) or Enhanced Attenuation (EA). A key result of the recent effort was the general affirmation of the approaches and guidance in the original U.S. Environmental Protection Agency (EPA) chlorinated solvent MNA protocols and directives from 1998 and 1999, respectively. The research program did identify several specific opportunities for advances based on: (1) mass balance as the central framework for attenuation based remedies, (2) scientific advancements and achievements during the past ten years, (3) regulatory and policy development and real-world experience using MNA, and (4) exploration of various ideas for integrating attenuation remedies into a systematic set of ''combined remedies'' for contaminated sites. These opportunities are summarized herein and are …
Date:
December 27, 2006
Creator:
Looney, B.; Early, Thomas O.; Gilmore, Tyler; Chapelle, Francis H.; Cutshall, Norman H.; Ross, Jeff et al.
Object Type:
Report
System:
The UNT Digital Library
Alternative Mortgages: Risks to Consumers and Lenders in the Current Housing Cycle
This report consists of alternative mortgages: risks to consumers and lenders in the current housing cycle.
Date:
December 27, 2006
Creator:
Murphy, Edward Vincent
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 108, No. 232, Ed. 1 Wednesday, December 27, 2006
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 86, No. 31, Ed. 1 Wednesday, December 27, 2006
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Clements, Clifford E.
Object Type:
Newspaper
System:
The Portal to Texas History
Cherokeean Herald (Rusk, Tex.), Vol. 156, No. 45, Ed. 1 Wednesday, December 27, 2006
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
December 27, 2006
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
Children Exposed to Domestic Violence: Federal Assistance Programs
The impact on children of domestic violence was an issue of interest in the 109th Congress. The first session of the 109th Congress ended with the passage of the Violence Against Women and Department of Justice Reauthorization Act of 2005 (P.L. 109-162), which contained new initiatives to address concerns about children and youth exposed to and victimized by domestic violence. This report discusses existing federal programs and initiatives that have been established to assist such children and youth, and new provisions enacted in P.L. 109-162.
Date:
December 27, 2006
Creator:
Cooper, Edith Fairman
Object Type:
Report
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 111, No. 52, Ed. 1 Wednesday, December 27, 2006
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Colony Courier-Leader (The Colony, Tex.), Vol. 25, No. 47, Ed. 1 Wednesday, December 27, 2006
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Crimmins, Blaine
Object Type:
Newspaper
System:
The Portal to Texas History
Elevated Concentrations of Primordial Radionuclides in Sediments from the Reedy River and Surrounding Creeks in Simpsonville, South Carolina
A gamma-ray survey and analysis of sixteen riverbed samples from the Reedy River watershed near Simpsonville, SC were conducted and compared with national and international studies of primordial radionuclides. The study reported here follows on a recent discovery of anomalously high uranium concentrations in several private well waters in the area near Simpsonville, SC. A HPGe spectrometer was used for quantification of gamma emitting radionuclides in the sediments. All sediments contained radionuclides from the uranium and thorium series as well as {sup 40}K. Uranium-238 concentrations in sediment samples ranged from 11.1 to 74.2 Bq kg{sup -1}. The measured radionuclide concentrations were compared with data from UNSCEAR and NURE reports. The river and stream sediment data were augmented by in situ NaI(Tl) gamma-ray spectrometer measurements. Comparisons between the ex-situ and in-situ measurements indicate equivalently distributed uranium in the surface soils and stream sediments, the source of which is likely attributed to the monazite belts that are known to exist in the area.
Date:
December 27, 2006
Creator:
Powell, B. A.; Hughes, L. D.; Soreefan, A. M.; Falta, D.; Wall, M. & DeVol, T. A.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, December 27, 2006
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 112, No. 25, Ed. 1 Wednesday, December 27, 2006
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 27, 2006
Creator:
Bridges, Steven W.
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Dallas, Tex.), Vol. 30, No. 260, Ed. 1 Wednesday, December 27, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
December 27, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 556, Ed. 1 Wednesday, December 27, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
December 27, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 557, Ed. 1 Wednesday, December 27, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
December 27, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Greensheet (Houston, Tex.), Vol. 37, No. 558, Ed. 1 Wednesday, December 27, 2006
Free weekly newspaper that includes business and classified advertising.
Date:
December 27, 2006
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
House Standing Committee Chairs and Ranking Minority Members: Rules Governing Selection Procedures
This report summarizes those procedures and lists membership on each party's steering committee.
Date:
December 27, 2006
Creator:
Schneider, Judy
Object Type:
Report
System:
The UNT Digital Library
Iraq: Recent Developments in Reconstruction Assistance
None
Date:
December 27, 2006
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Llano News (Llano, Tex.), Vol. 119, No. 13, Ed. 1 Wednesday, December 27, 2006
Weekly newspaper from Llano, Texas that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Stephenson, Jimmy
Object Type:
Newspaper
System:
The Portal to Texas History
Lobbying Congress: An Overview of Legal Provisions and Congressional Ethics Rules
This report provides a brief overview and summary of the federal laws, ethical rules, and regulations which may be relevant to the activities of those who lobby the United States Congress.
Date:
December 27, 2006
Creator:
Maskell, Jack
Object Type:
Report
System:
The UNT Digital Library
Mannford Eagle (Mannford, Okla.), Vol. 25, No. 37, Ed. 1 Wednesday, December 27, 2006
Weekly newspaper from Mannford, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 27, 2006
Creator:
Farley, Tim
Object Type:
Newspaper
System:
The Gateway to Oklahoma History