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959
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187
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111
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102
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57
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41
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11
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Texas Inmate Monthly Report
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21
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Birds of Lake Mineral Wells State Park & Trailway: A Field Checklist
This is a checklist of bird species found at the Lake Mineral Wells State Park.
Date:
April 2015
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Pamphlet
System:
The Portal to Texas History
Mineral transformation and biomass accumulation associated with uranium bioremediation at Rifle, Colorado
Injection of organic carbon into the subsurface as an electron donor for bioremediation of redox-sensitive contaminants like uranium often leads to mineral transformation and biomass accumulation, both of which can alter the flow field and potentially bioremediation efficacy. This work combines reactive transport modeling with a column experiment and field measurements to understand the biogeochemical processes and to quantify the biomass and mineral transformation/accumulation during a bioremediation experiment at a uranium contaminated site near Rifle, Colorado. We use the reactive transport model CrunchFlow to explicitly simulate microbial community dynamics of iron and sulfate reducers, and their impacts on reaction rates. The column experiment shows clear evidence of mineral precipitation, primarily in the form of calcite and iron monosulfide. At the field scale, reactive transport simulations suggest that the biogeochemical reactions occur mostly close to the injection wells where acetate concentrations are highest, with mineral precipitate and biomass accumulation reaching as high as 1.5% of the pore space. This work shows that reactive transport modeling coupled with field data can be an effective tool for quantitative estimation of mineral transformation and biomass accumulation, thus improving the design of bioremediation strategies.
Date:
April 20, 2009
Creator:
Li, L.; Steefel, C. I.; Williams, K. H.; Wilkins, M. J. & Hubbard, S. S.
Object Type:
Article
System:
The UNT Digital Library
Economic analysis of vertical wells for coalbed methane recovery
Previous economic studies of the recovery and utilization of methane from coalbeds using vertical wells were based on drainage in advance of mining where a single seam is drained with well spacing designed for rapid predrainage. This study extends the earlier work and shows that methane recovery costs can be reduced significantly by increasing well spacing and draining multiple coalbeds. A favorable return on investment can be realized in many geologic settings using this method. Sensitivity of recovery economics to certain development costs and parametric variations are also examined as are the economics of three methane utilization options.
Date:
April 1, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Mineral Resource Information System for Field Lab in the Osage Mineral Reservation Estate
The Osage Mineral Reservation Estate is located in Osage County, Oklahoma. Minerals on the Estate are owned by members of the Osage Tribe who are shareholders in the Estate. The Estate is administered by the Osage Agency, Branch of Minerals, operated by the U.S. Bureau of Indian Affairs (BIA). Oil, natural gas, casinghead gas, and other minerals (sand, gravel, limestone, and dolomite) are exploited by lessors. Operators may obtain from the Branch of Minerals and the Osage Mineral Estate Tribal Council leases to explore and exploit oil, gas, oil and gas, and other minerals on the Estate. Operators pay a royalty on all minerals exploited and sold from the Estate. A mineral Resource Information system was developed for this project to evaluate the remaining hydrocarbon resources located on the Estate. Databases on Microsoft Excel spreadsheets of operators, leases, and production were designed for use in conjunction with an evaluation spreadsheet for estimating the remaining hydrocarbons on the Estate.
Date:
April 27, 1999
Creator:
Carroll, H.B. & Johnson, William I.
Object Type:
Report
System:
The UNT Digital Library
Chemical logging of geothermal wells
The determination of the change in chemical composition of the diluted drill fluid and its separation from the chemical background contributed by the drill fluid, drill mud, and other aquifer leakage is the essence of the chemical log. Samples of the drill fluid were collected for chemical analysis at certain times during the drilling operations. The chemical logging study of the geothermal wells is described. (MHR)
Date:
April 1, 1979
Creator:
McAtee, R. E.; Allen, C. A. & Lewis, L. C.
Object Type:
Article
System:
The UNT Digital Library
Landowners Guide to Plugging Abandoned Water Wells
Document outlining the hazards of abandoned wells and discussing the best methods for plugging abandoned water wells for landowners.
Date:
April 1999
Creator:
Texas Groundwater Protection Committee
Object Type:
Pamphlet
System:
The Portal to Texas History
Acoustic Energy: An Innovative Technology for Stimulating Oil Wells
The objective of this investigation was to demonstrate the effectiveness of sonication in reducing the viscosity of heavy crude oils. Sonication is the use of acoustic or sound energy to produce physical and/or chemical changes in materials, usually fluids. The goal of the first project phase was to demonstrate a proof of concept for the project objective. Batch tests of three commercially available, single-weight oils (30-, 90-, and 120-wt) were performed in the laboratory. Several observations and conclusions were made from this series of experiments. These include the following: (1) In general, the lower the acoustic frequency, the greater the efficiency in reducing the viscosity of the oils; (2) Sonication treatment of the three oils resulted in reductions in viscosity that ranged from a low of 31% to a high of 75%; and (3) The results of the first phase of the project successfully demonstrated that sonication could reduce the viscosity of oils of differing viscosity. The goal of the second project phase was to demonstrate the ability of sonication to reduce the viscosity of three crude oils ranging from a light crude to a heavy crude. The experiments also were designed to examine the benefits of two proprietary chemical …
Date:
April 30, 2006
Creator:
Edgar, Dorland E.; Peters, Robert W.; Johnson, Donald O.; Paulsen, P. David & Roberts, Wayne
Object Type:
Report
System:
The UNT Digital Library
Mountaintop Mining: Background on Current Controversies
Mountaintop removal mining involves removing the top of a mountain in order to recover the coal seams contained there. This practice occurs in several Appalachian states. It creates an immense quantity of excess spoil (dirt and rock that previously composed the mountaintop), which is typically placed in valley fills on the sides of the former mountains, burying streams that flow through the valleys. Critics say that, as a result of valley fills, stream water quality and the aquatic and wildlife habitat that streams support are destroyed by tons of rocks and dirt. The mining industry argues that mountaintop mining is essential to conducting surface coal mining in the Appalachian region and that surface coal mining would not be economically feasible there if producers were restricted from using valleys for the disposal of mining overburden. Mountaintop mining is regulated under several laws, including the Clean Water Act and the Surface Mining Control and Reclamation Act. This report provides background on regulatory requirements, controversies, and legal challenges to regulation of mountaintop mining. Congressional attention to these issues, including legislation that would restrict the practice (H.R. 1310, the Clean Water Protection Act, and S. 696, the Appalachia Restoration Act), also is discussed.
Date:
April 20, 2009
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Mountaintop Mining: Background on Current Controversies
This report provides background on regulatory requirements, controversies and legal challenges to mountaintop mining, and recent Administration actions. Congressional interest in these issues also is discussed, including legislation in the 111th Congress seeking to restrict the practice of mountaintop mining and other legislation intended to block the Obama Administration’s regulatory actions.
Date:
April 12, 2010
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Mountaintop Mining: Background on Current Controversies
This report provides background on regulatory requirements, controversies and legal challenges to mountaintop mining, and recent Administration actions. Attention to EPA’s veto of the West Virginia mining permit and other federal agency actions has increased in Congress. Congressional interest in these issues is discussed, including legislation seeking to restrict the practice of mountaintop mining and other legislation intended to block the Obama Administration’s regulatory actions.
Date:
April 20, 2015
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Management of Fuel and Nonfuel Minerals in Federal Land: Current Status and Issues
An assessment by the Office of Technology Assessment (OTA) that "examines a series of options that range from continuance of the status quo to major and comprehensive innovations in the management of mineral activities on Federal lands" (p. iii).
Date:
April 1979
Creator:
United States. Congress. Office of Technology Assessment.
Object Type:
Report
System:
The UNT Digital Library
Regional gravity and aeromagnetic surveys of the Mineral Mountains and vicinity, Millard and Beaver Counties, Utah
The results of gravity and aeromagnetic surveys of the Mineral Mountains and vicinity are presented as a terrain-corrected Bouguer gravity anomaly map (about 1450 stations with 1-mgal contour interval) and a total magnetic field intensity residual anomaly map (with contour interval 50 gammas), respectively. Combined interpretation of the gravity and aeromagnetic data was conducted based on comparing and contrasting various processed maps and interpretative geologic cross sections produced from each survey. (MHR)
Date:
April 1, 1978
Creator:
Carter, J. A. & Cook, K. L.
Object Type:
Report
System:
The UNT Digital Library
Measuring and predicting reservoir heterogeneity in complex deposystems: The fluvial-deltaic Big Injun sandstone in West Virginia
The purpose of this research is to develop techniques to measure and predict heterogeneities in oil reservoirs that are the products of complex deposystems. The unit chosen for study is the Lower Mississippian Big Injun sandstone, a prolific oil producer (nearly 60 fields) in West Virginia. This research effort has been designed and is being implemented as an integrated effort involving stratigraphy, structural geology, petrology, seismic study, petroleum engineering, modeling and geostatistics. Sandstone bodies are being mapped within their regional depositional systems, and then sandstone bodies are being classified in a scheme of relative heterogeneity to determine heterogeneity across depositional systems. Facies changes are being mapped within given reservoirs, and the environments of deposition responsible for each facies are being interpreted to predict the inherent relative heterogeneity of each facies. Structural variations will be correlated both with production, where the availability of production data will permit, and with variations in geologic and engineering parameters that affect production. A reliable seismic model of the Big Injun reservoirs in Granny Creek field is being developed to help interpret physical heterogeneity in that field. Pore types are being described and related to permeability, fluid flow and diagenesis, and petrographic data are being integrated …
Date:
April 1, 1993
Creator:
Patchen, D.G.; Hohn, M.E.; Aminian, K.; Donaldson, A.; Shumaker, R. & Wilson, T.
Object Type:
Report
System:
The UNT Digital Library
Mechanism and environmental effects on MEOR induced by the alpha process
This project was an interdisciplinary investigation of the enhanced oil recovery effects of a commercial microbial enhanced oil recovery (MEOR) system. The purpose was to investigate in parallel laboratory and field studies the response of a portion of the Shannon Sandstone reservoir to two single-well treatments with a commercial MEOR system, to investigate basic bacteria/rock interactions, and to investigate mechanisms of oil release. The MEOR system consisted of a mixed culture of hydrocarbon-utilizing bacteria, inorganic nutrients, and other growth factors. Parallel field and laboratory investigations into the effect and mechanisms of the treatment were carried out by independent principal investigators. The Shannon Sandstone at the Naval Petroleum Reserve [number sign]3 (NPR [number sign]3), Teapot Dome Field, Wyoming, was the location of the pilot field treatment. The treated and adjacent observation wells showed production and microbiological perturbations that are attributed to the effects of treatment during the first four post-treatment months. Effects of treatment declined to background levels within four months of inoculation. No production response was recorded in control wells unaffected by microbial stimulation. Laboratory research resulted in descriptions of colonization patterns of hydrocarbon-utilizing bacteria in the reservoir rock environment. Core-flooding research utilizing various components of the MEOR system did …
Date:
April 1, 1993
Creator:
Hiebert, F. K.; Zumberge, J.; Rouse, B.; Cowes, A. & Lake, L. W.
Object Type:
Report
System:
The UNT Digital Library
Ground Water Resources of the Carrizo Aquifer in the Winter Garden Area of Texas: Volume 2. Records of Wells; Water Levels in Wells; Chemical Analyses of Water; and Well Location Maps
"This report … contains supporting basic data including well location maps, records of 3,214 water wells, records of water levels in 474 wells, and chemical analyses of water samples from 1,553 wells" (p. 1).
Date:
April 1977
Creator:
Marquardt, Glenn & Rodriguez, Eulogio, Jr.
Object Type:
Report
System:
The Portal to Texas History
Mineral Revenues: Cost and Revenue Information Needed to Compare Different Approaches for Collecting Federal Oil and Gas Royalties
A letter report issued by the General Accounting Office with an abstract that begins "In fiscal year 2003, the federal government collected $5.6 billion in royalties from oil and gas production on federal lands. Although most oil and gas companies pay royalties in cash, the Department of the Interior's Minerals Management Service (MMS) has the option to take a percentage of the oil and gas produced and sell this product-- known as "taking royalties in kind (RIK)." MMS has taken royalties in kind continuously since 1998 with the goal of achieving administrative savings while maintaining revenue. GAO attempted to (1) quantify the administrative savings that may be attributable to the RIK sales and (2) compare the sales revenues from RIK sales to what would have been collected in cash royalty payments."
Date:
April 16, 2004
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Utilization of geothermal energy-feasibility study, Ojo Caliente Mineral Springs Company, Ojo Caliente, New Mexico
This report investigates the feasibility of a geothermal heating system at the Ojo Caliente Mineral Springs Co. The geothermal energy will be used to preheat hot water for the laundry facilities and to heat the water for a two-pipe fan coil heating system in the hotel. Present annual heating fuel costs of $11,218 for propane will be replaced by electricity to operate fans and pump at an annual cost of $2547, resulting in a net savings of $8671. Installation costs include $10,100 for a well system, $1400 for a laundry system, and $41,100 for a heating system. With the addition of a 10% design fee the total installation cost is $57,860. Ignoring escalating propane fuel prices, tax credits for energy conservation equipment, and potential funding from the State of New Mexico for a geothermal demonstration project, the simple economic payback period for this project is 6.7 years.
Date:
April 1, 1982
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Bracket
Patent for a shelf bracket which can support a shelf with only one bracket.
Date:
April 27, 1909
Creator:
Cockrum, George R.
Object Type:
Patent
System:
The Portal to Texas History
Churn Operator
Patent for a Churn Operator. This device contains specifications for operating churn-dashers, as well as improvements for the established churn operator.
Date:
April 13, 1905
Creator:
Ham, James T.
Object Type:
Patent
System:
The Portal to Texas History
Weeks Island S sand reservoir B gravity stable miscible CO/sub 2/ displacement, Iberia Parish, Louisiana. Fourth annual report, June 1980-June 1981
Shell, in conjunction with the United States of America Department of Energy, is conducting a gravity stable displacement field test of the miscible CO/sub 2/ process. The test is being conducted in the portion of a fault sealed reservoir lying below a subsea depth of -12,750 feet. Injection of the CO/sub 2/ slug at the producing gas-oil contact commenced in October 1978. Injection of the 860 MM cubic foot slug was completed in February of 1980. The slug of CO/sub 2/ was moved downward through the watered out sand by production of downdip water. The leading edge of the displacement has reached the producing perforations and production of the oil column commenced on January 26, 1981. Conventional cores and the log-inject-log technique were used to determine residual oil saturation in a well drilled as the pilot producer. Pulsed neutron logging devices have been used to detect the CO/sub 2/ slug and monitor its subsequent movements in the vicinity of the production well. The monitor logs indicate the thickness of the oil column had increased during the displacement to the production perforations located 130 feet below the level of CO/sub 2/ injection. The 23 foot oil column remaining at initiation of …
Date:
April 1, 1982
Creator:
Perry, G.E.
Object Type:
Report
System:
The UNT Digital Library
Plan for Management of Mineral Assess on Native Tribal Lands and for Formation of a Fully Integrated Natural Gas and Oil Exploration and Production Company
This report describes a plan for Native American tribes to assume responsibility for and operation of tribal mineral resources using the Osage Tribe as an example. Under this plan, the tribal council select and employ a qualified Director to assume responsibility for management of their mineral reservations. The procurement process should begin with an application for contracting to the Bureau of Indian Affairs. Under this plan, the Director will develop strategies to increase income by money management and increasing exploitation of natural gas, oil, and other minerals.
Date:
April 27, 1999
Creator:
Blechner, Michael H.; Carroll, Herbert B. & Johnson, William I.
Object Type:
Report
System:
The UNT Digital Library
Reconnaissance for Radioactive Deposits in the Hyder District, Southeastern Alaska, 1949
The following report studies samples from radioactive deposits in the Hyder district of southeastern Alaska.
Date:
April 1954
Creator:
West, Walter S. & Benson, Paul D.
Object Type:
Report
System:
The UNT Digital Library
Internal Technical Report, 1981 Annual Report, An Analysis of the Response of the Raft River Geothermal Site Monitor Wells
A groundwater monitoring program has been established on the Raft River Geothermal Site since 1978. The objective of this program is to document possible impacts that may be caused by geothermal production and injection on the shallow aquifers used for culinary and irrigation purposes. This annual progress report summarizes data from 12 monitor wells during 1981. These data are compared with long-term trends and are correlated with seasonal patterns, irrigation water use and geothermal production and testing. These results provide a basis for predicting long-term impacts of sustained geothermal production and testing. To date, there has been no effect on the water quality of the shallow aquifers.
Date:
April 1, 1982
Creator:
Thurow, T. L.; Large, R. M.; Allman, D. W.; Tullis, J. A. & Skiba, P. A.
Object Type:
Report
System:
The UNT Digital Library
The crosswell electromagnetic response of layered media
Crosswell electromagnetic measurements are a promising new geophysical technique for mapping subsurface electrical conductivity which can provide information about the subsurface distribution of water, oil or steam. In this work the fields from a low frequency vertical magnetic dipole have been examined from the specific point of view of their application to the determination of the conductivity of a layered medium. The source and the receiver were placed inside two separate boreholes. The range of penetration of such a crosswell system for typical earth resistivities and for currently available transmitter and receiver technologies was found to be up to 1,000 meters so problems in ground water and petroleum reservoir characteristics can be practically examined. An analysis of the behavior of the magnetic fields at the boundary between two half-spaces showed that the horizontal magnetic field component, H{rho}, and the vertical derivative of a vertical component, {delta}H{sub z}/{delta}z, are more sensitive to conductivity variations than H{sub z}. The analysis of derivatives led to the concept of measuring the conductivity directly using a second vertical derivative of H{sub z}. Conductivity profiles interpreted from field data using this technique reproduced accurately the electrical logs for a test site near Devine, Texas. It was …
Date:
April 1, 1994
Creator:
Deszcz-Pan, M.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library