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North Texas Star (Mineral Wells, Tex.), December 2007
Monthly newspaper from Mineral Wells, Texas that includes history and travel stories along with advertising.
Date:
December 1, 2007
Creator:
May, David
Object Type:
Newspaper
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 3838, Chapter 1118
Bill introduced by the Texas House of Representatives relating to regulation of injection wells used for in situ uranium recovery by the Texas Commission on Environmental Quality.
Date:
June 15, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
Geochemical Enhancement Of Enhanced Geothermal System Reservoirs: An Integrated Field And Geochemical Approach
The geochemical effects of injecting fluids into geothermal reservoirs are poorly understood and may be significantly underestimated. Decreased performance of injection wells has been observed in several geothermal fields after only a few years of service, but the reasons for these declines has not been established. This study had three primary objectives: 1) determine the cause(s) of the loss of injectivity; 2) utilize these observations to constrain numerical models of water-rock interactions; and 3) develop injection strategies for mitigating and reversing the potential effects of these interactions. In this study rock samples from original and redrilled injection wells at Coso and the Salton Sea geothermal fields, CA, were used to characterize the mineral and geochemical changes that occurred as a result of injection. The study documented the presence of mineral scales and at both fields in the reservoir rocks adjacent to the injection wells. At the Salton Sea, the scales consist of alternating layers of fluorite and barite, accompanied by minor anhydrite, amorphous silica and copper arsenic sulfides. Amorphous silica and traces of calcite were deposited at Coso. The formation of silica scale at Coso provides an example of the effects of untreated (unacidified) injectate on the reservoir rocks. Scanning …
Date:
December 31, 2007
Creator:
Moore, Joseph N.
Object Type:
Report
System:
The UNT Digital Library
ADVANCED CEMENTS FOR GEOTHERMAL WELLS
Using the conventional well cements consisting of the calcium silicate hydrates (CaO-SiO{sub 2}-H{sub 2}O system) and calcium aluminum silicate hydrates (CaO-Al{sub 2}O{sub 3}-SiO{sub 2}-H{sub 2}O system) for the integrity of geothermal wells, the serious concern confronting the cementing industries was their poor performance in mechanically supporting the metallic well casing pipes and in mitigating the pipe's corrosion in very harsh geothermal reservoirs. These difficulties are particularly acute in two geological regions: One is the deep hot downhole area ({approx} 1700 m depth at temperatures of {approx} 320 C) that contains hyper saline water with high concentrations of CO{sub 2} (> 40,000 ppm) in conjunction with {approx} 100 ppm H{sub 2}S at a mild acid of pH {approx} 5.0; the other is the upper well region between the well's surface and {approx} 1000 m depth at temperatures up to 200 C. The specific environment of the latter region is characterized by highly concentrated H{sub 2}SO{sub 4} (pH < 1.5) brine containing at least 5000 ppm CO{sub 2}. When these conventional cements are emplaced in these harsh environments, their major shortcoming is their susceptibility to reactions with hot CO{sub 2} and H{sub 2}SO4, thereby causing their deterioration brought about by CO{sub 2}-catalyzed …
Date:
January 1, 2007
Creator:
SUGAMA,T.
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. This report provides background on regulatory requirements, controversies, and legal challenges to Clean Water Act regulation of mountaintop mining. Congressional attention to these issues also is discussed.
Date:
October 11, 2007
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Trip report for field visit to Fayetteville Shale gas wells.
This report describes a visit to several gas well sites in the Fayetteville Shale on August 9, 2007. I met with George Sheffer, Desoto Field Manager for SEECO, Inc. (a large gas producer in Arkansas). We talked in his Conway, Arkansas, office for an hour and a half about the processes and technologies that SEECO uses. We then drove into the field to some of SEECO's properties to see first-hand what the well sites looked like. In 2006, the U.S. Department of Energy's (DOE's) National Energy Technology Laboratory (NETL) made several funding awards under a program called Low Impact Natural Gas and Oil (LINGO). One of the projects that received an award is 'Probabilistic Risk-Based Decision Support for Oil and Gas Exploration and Production Facilities in Sensitive Ecosystems'. The University of Arkansas at Fayetteville has the lead on the project, and Argonne National Laboratory is a partner. The goal of the project is to develop a Web-based decision support tool that will be used by mid- and small-sized oil and gas companies as well as environmental regulators and other stakeholders to proactively minimize adverse ecosystem impacts associated with the recovery of gas reserves in sensitive areas. The project focuses on …
Date:
September 30, 2007
Creator:
Veil, J. A. & Division, Environmental Science
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 Clean Water Act regulation of mountaintop mining. Congressional attention to these issues also is discussed.
Date:
January 24, 2007
Creator:
Copeland, Claudia
Object Type:
Report
System:
The UNT Digital Library
Enchanted Clays: 44th Annual Meeting of the Clay Minerals Society (June 2007)
“Enchanted Clays: 44th Annual Meeting of the Clay Minerals Society” was held in early June 2007 in beautiful and historic Santa Fe, New Mexico, USA. Santa Fe provided an idyllic location in the southwestern United States for the attendees to enjoy technical and social sessions while soaking up the diverse culture and wonderful climate of New Mexico—The Land of Enchantment. The meeting included a large and varied group of scientists, sharing knowledge and ideas, benefitting from technical interactions, and enjoying the wonderful historic and enchanted environs of Santa Fe. Including significant number of international scientists, the meeting was attended by approximately two hundred participants. The meeting included three days of technical sessions (oral and poster presentations), three days of field trips to clay and geological sites of northern New Mexico, and a full day workshop on the stabilization of carbon by clays. Details can be found at the meeting web site: www.sandia.gov/clay.
Date:
June 1, 2007
Creator:
Cygan, Randall T.
Object Type:
Article
System:
The UNT Digital Library
Harsh-Environment Solid-State Gamma Detector for Down-hole Gas and Oil Exploration
The goal of this program was to develop a revolutionary solid-state gamma-ray detector suitable for use in down-hole gas and oil exploration. This advanced detector would employ wide-bandgap semiconductor technology to extend the gamma sensor's temperature capability up to 200 C as well as extended reliability, which significantly exceeds current designs based on photomultiplier tubes. In Phase II, project tasks were focused on optimization of the final APD design, growing and characterizing the full scintillator crystals of the selected composition, arranging the APD device packaging, developing the needed optical coupling between scintillator and APD, and characterizing the combined elements as a full detector system preparing for commercialization. What follows is a summary report from the second 18-month phase of this program.
Date:
August 10, 2007
Creator:
Sandvik, Peter; Soloviev, Stanislav; Andarawis, Emad; Cha, Ho-Young; Rose, Jim; Durocher, Kevin et al.
Object Type:
Report
System:
The UNT Digital Library
Corrective Action Investigation Plan for Corrective Action Unit 556: Dry Wells and Surface Release Points Nevada Test Site, Nevada (Draft), Revision 0
Corrective Action Unit (CAU) 556, Dry Wells and Surface Release Points, is located in Areas 6 and 25 of the Nevada Test Site, 65 miles northwest of Las Vegas, Nevada. Corrective Action Unit 556 is comprised of four corrective action sites (CASs) listed below: •06-20-04, National Cementers Dry Well •06-99-09, Birdwell Test Hole •25-60-03, E-MAD Stormwater Discharge and Piping •25-64-01, Vehicle Washdown and Drainage Pit These sites are being investigated because existing information on the nature and extent of potential contamination is insufficient to evaluate and recommend corrective action alternatives. Additional information will be obtained by conducting a corrective action investigation before evaluating corrective action alternatives and selecting the appropriate corrective action for each CAS. The results of the field investigation will support a defensible evaluation of viable corrective action alternatives that will be presented in the Corrective Action Decision Document.
Date:
February 1, 2007
Creator:
Evenson, Grant
Object Type:
Report
System:
The UNT Digital Library
Remedial Action Report for Operable Units 6-05 and 10-04, Phase III
This Phase III remedial action report addresses the remediation of lead-contaminated soils found at the Security Training Facility STF-02 Gun Range at the Idaho National Laboratory Site. Phase I, consisting of developing and implementing institutional controls at Operble Unit 10-04 sites and developing and implementing Idaho National Laboratory Site-wide plans for both institutional controls and ecological monitoring, was addressed in a previous report. Phase II will remediate sites contaminated with trinitrotoluene and Royal Demolition Explosive. Phase IV will remediate hazards from unexploded ordnance.
Date:
August 15, 2007
Creator:
Wells, R. P.
Object Type:
Report
System:
The UNT Digital Library
Waste Area Group 10, Operable Unit 10-08, Remedial Investigation/Feasibility Study Annual Status Report for Fiscal Year 2006
This report provides a status of the progress made in Fiscal Year 2006 on tasks identified in the Waste Area Group 10, Operable Unit 10-08, Remedial Investigation/Feasibility Study Work Plan. Major accomplishments include: (1) groundwater sampling and review of the groundwater monitoring data, (2) installation of a Sitewide groundwater-level monitoring network, (3) update of the Groundwater Monitoring and Field Sampling Plan of Operable Unit 10-08, (4) re-evaluation of the risk at Site TSF-08, (5) progress on the Operable Unit 10-08 Sitewide Groundwater Model.
Date:
May 9, 2007
Creator:
Wells, R. P.
Object Type:
Report
System:
The UNT Digital Library
Evaluation of Oil-Industry Stimulation Practices for Engineered Geothermal Systems
Geothermal energy extraction is typically achieved by use of long open-hole intervals in an attempt to connect the well with the greatest possible rock mass. This presents a problem for the development of Enhanced (Engineered) Geothermal Systems (EGS), owing to the challenge of obtaining uniform stimulation throughout the open-hole interval. Fluids are often injected in only a fraction of that interval, reducing heat transfer efficiency and increasing energy cost. Pinnacle Technologies, Inc. and GeothermEx, Inc. evaluated a variety of techniques and methods that are commonly used for hydraulic fracturing of oil and gas wells to increase and evaluate stimulation effectiveness in EGS wells. Headed by Leen Weijers, formerly Manager of Technical Development at Pinnacle Technologies, Inc., the project ran from August 1, 2004 to July 31, 2006 in two one-year periods to address the following tasks and milestones: 1) Analyze stimulation results from the closest oil-field equivalents for EGS applications in the United States (e.g., the Barnett Shale in North Texas) (section 3 on page 8). Pinnacle Technologies, Inc. has collected fracture growth data from thousands of stimulations (section 3.1 on page 12). This data was further evaluated in the context of: a) Identifying techniques best suited to developing a …
Date:
October 17, 2007
Creator:
Dyke, Peter Van; Weijers, Leen; Robertson-Tait, Ann; Warpinski, Norm; Mayerhofer, Mike; Minner, Bill et al.
Object Type:
Report
System:
The UNT Digital Library
Microhole High-Pressure Jet Drill for Coiled Tubing
Tempress Small Mechanically-Assisted High-Pressure Waterjet Drilling Tool project centered on the development of a downhole intensifier (DHI) to boost the hydraulic pressure available from conventional coiled tubing to the level required for high-pressure jet erosion of rock. We reviewed two techniques for implementing this technology (1) pure high-pressure jet drilling and (2) mechanically-assisted jet drilling. Due to the difficulties associated with modifying a downhole motor for mechanically-assisted jet drilling, it was determined that the pure high-pressure jet drilling tool was the best candidate for development and commercialization. It was also determined that this tool needs to run on commingled nitrogen and water to provide adequate downhole differential pressure and to facilitate controlled pressure drilling and descaling applications in low pressure wells. The resulting Microhole jet drilling bottomhole assembly (BHA) drills a 3.625-inch diameter hole with 2-inch coil tubing. The BHA consists of a self-rotating multi-nozzle drilling head, a high-pressure rotary seal/bearing section, an intensifier and a gas separator. Commingled nitrogen and water are separated into two streams in the gas separator. The water stream is pressurized to 3 times the inlet pressure by the downhole intensifier and discharged through nozzles in the drilling head. The energy in the gas-rich stream …
Date:
June 30, 2007
Creator:
Theimer, Ken & Kolle, Jack
Object Type:
Report
System:
The UNT Digital Library
Mixtures of Metals and Polynuclear Aromatic Hydrocarbons May Elicit Complex, Nonadditive Toxicological Interactions
This is a study on the possible effects of metals and polynuclear aromatic hydrocarbons elevated due to possible proximity to oil and gas production platforms.
Date:
May 2007
Creator:
Fleeger, John W.; Marlborough, Sidney J.; Carman, Kevin R. & Silva, Soroya
Object Type:
Report
System:
The UNT Digital Library
2007 Economic Census Map: Palo Pinto County, Texas - Economic Places
Map for Palo Pinto County, Texas showing the boundaries of designated areas for which the U.S. Census Bureau collected data during the 2002 and 2007 economic censuses.
Date:
2007
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
3D Magnetotelluic characterization of the Coso GeothermalField
Electrical resistivity may contribute to progress inunderstanding geothermal systems by imaging the geometry, bounds andcontrolling structures in existing production, and thereby perhapssuggesting new areas for field expansion. To these ends, a dense grid ofmagnetotelluric (MT) stations plus a single line of contiguous bipolearray profiling has been acquired over the east flank of the Cosogeothermal system. Acquiring good quality MT data in producing geothermalsystems is a challenge due to production related electromagnetic (EM)noise and, in the case of Coso, due to proximity of a regional DCintertie power transmission line. To achieve good results, a remotereference completely outside the influence of the dominant source of EMnoise must be established. Experimental results so far indicate thatemplacing a reference site in Amargosa Valley, NV, 65 miles from the DCintertie, isstill insufficient for noise cancellation much of the time.Even though the DC line EM fields are planar at this distance, theyremain coherent with the nonplanar fields in the Coso area hence remotereferencing produces incorrect responses. We have successfully unwrappedand applied MT times series from the permanent observatory at Parkfield,CA, and these appear adequate to suppress the interference of thecultural EM noise. The efficacy of this observatory is confirmed bycomparison to stations taken using an ultra-distant …
Date:
April 23, 2007
Creator:
Newman, Gregory A.; Hoversten, G. Michael; Wannamaker, Philip E. & Gasperikova, Erika
Object Type:
Article
System:
The UNT Digital Library
2007 Economic Census Map: Parker County, Texas - Economic Places
Map for Parker County, Texas showing the boundaries of designated areas for which the U.S. Census Bureau collected data during the 2002 and 2007 economic censuses.
Date:
2007
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
Oral History Interview with Arlos L. Awalt, May 29, 2007
The National Museum of the Pacific War presents an oral interview with Arlos L. Awalt. He was born in Brady, Texas, drafted into the Army, and inducted at Ft. Sam Houston, in San Antonio. After basic training at Camp Wolters in Mineral Wells, Texas, he took a troop train to New York Harbor and boarded the Louis S. Pasteur to Southhampton, England where he was assigned to the 106th Infantry Division, 424 Regiment, in the 81mm mortars in H Company, a heavy weapons company. They went right into the Battle of the Bulge where he suffered frost bite and pneumonia. Later assignments included the following: the occupation army in charge of prisoner of war camps interviewing POWs and displaced persons, serving at General Eisenhower's headquarters building in a little red schoolhouse in Rheims, France (where peace was later signed), in the Grand Hotel in Bad Nauheim, Germany where General Patton was officed, and in Renea Lanay, France. He served 22 months in the Army, 19 overseas - returning as a corporal. He received the Bronze Star, the Combat Infantryman's Badge, and two medals from the Belgian government.
Date:
May 29, 2007
Creator:
Awalt, Arlos L. (Curly)
Object Type:
Text
System:
The Portal to Texas History
80th Texas Legislature, Regular Session, House Bill 3837, Chapter 1117
Bill introduced by the Texas House of Representatives relating to regulation by the Railroad Commission of Texas of uranium exploration.
Date:
June 15, 2007
Creator:
Texas. Legislature. House of Representatives.
Object Type:
Legislative Document
System:
The Portal to Texas History
Oral History Interview with Arlos L. Awalt, May 29, 2007
The National Museum of the Pacific War presents an oral interview with Arlos L. Awalt. He was born in Brady, Texas, drafted into the Army, and inducted at Ft. Sam Houston, in San Antonio. After basic training at Camp Wolters in Mineral Wells, Texas, he took a troop train to New York Harbor and boarded the Louis S. Pasteur to Southhampton, England where he was assigned to the 106th Infantry Division, 424 Regiment, in the 81mm mortars in H Company, a heavy weapons company. They went right into the Battle of the Bulge where he suffered frost bite and pneumonia. Later assignments included the following: the occupation army in charge of prisoner of war camps interviewing POWs and displaced persons, serving at General Eisenhower's headquarters building in a little red schoolhouse in Rheims, France (where peace was later signed), in the Grand Hotel in Bad Nauheim, Germany where General Patton was officed, and in Renea Lanay, France. He served 22 months in the Army, 19 overseas - returning as a corporal. He received the Bronze Star, the Combat Infantryman's Badge, and two medals from the Belgian government.
Date:
May 29, 2007
Creator:
Awalt, Arlos L. (Curly)
Object Type:
Sound
System:
The Portal to Texas History
Arsenic pilot plant operation and results - Socorro Springs, New Mexico - phase 1.
Sandia National Laboratories (SNL) is conducting pilot scale evaluations of the performance and cost of innovative water treatment technologies aimed at meeting the recently revised arsenic maximum contaminant level (MCL) for drinking water. The standard of 10 {micro}g/L (10 ppb) is effective as of January 2006. The first pilot tests have been conducted in New Mexico where over 90 sites that exceed the new MCL have been identified by the New Mexico Environment Department. The pilot test described in this report was conducted in Socorro New Mexico between January 2005 and July 2005. The pilot demonstration is a project of the Arsenic Water Technology Partnership program, a partnership between the American Water Works Association Research Foundation (AwwaRF), SNL and WERC (A Consortium for Environmental Education and Technology Development). The Sandia National Laboratories pilot demonstration at the Socorro Springs site obtained arsenic removal performance data for five different adsorptive media under constant ambient flow conditions. Well water at Socorro Springs has approximately 42 ppb arsenic in the oxidized (arsenate-As(V)) redox state with moderate amounts of silica, low concentrations of iron and manganese and a slightly alkaline pH (8). The study provides estimates of the capacity (bed volumes until breakthrough at 10 …
Date:
May 1, 2007
Creator:
Aragon, Malynda Jo; Everett, Randy L.; Siegel, Malcolm Dean; Kottenstette, Richard Joseph; Holub, William E. Jr; Wright, Jeremy B. et al.
Object Type:
Report
System:
The UNT Digital Library
2007 Economic Census Map: Dallas-Fort Worth, Texas Combined Statistical Area
Map showing the area of the Dallas-Fort Worth, Texas Combined Statistical Area for which the U.S. Census Bureau collected data during the 2007 economic census.
Date:
2007
Creator:
United States. Bureau of the Census.
Object Type:
Map
System:
The Portal to Texas History
Water injection as a means for reducing non-condensible andcorrosive gases in steam produced from vapor-dominated reservoirs
Large-scale water injection at The Geysers, California, hasgenerated substantial benefits in terms of sustaining reservoir pressuresand production rates, as well as improving steam composition by reducingthe content of non-condensible gases (NCGs). Two effects have beenrecognized and discussed in the literature as contributing to improvedsteam composition, (1) boiling of injectate provides a source of "clean"steam to production wells, and (2) pressurization effects induced byboiling of injected water reduce upflow of native steam with large NCGconcentrations from depth. In this paper we focus on a possibleadditional effect that could reduce NCGs in produced steam by dissolutionin a condensed aqueous phase.Boiling of injectate causes pressurizationeffects that will fairly rapidly migrate outward, away from the injectionpoint. Pressure increases will cause an increase in the saturation ofcondensed phase due to vapor adsorption on mineral surfaces, andcapillary condensation in small pores. NCGs will dissolve in theadditional condensed phase which, depending upon their solubility, mayreduce NCG concentrations in residual steam.We have analyzed thepartitioning of HCl between vapor and aqueous phases, and have performednumerical simulations of injection into superheated vapor zones. Oursimulations provide evidence that dissolution in the condensed phase canindeed reduce NCG concentrations in produced steam.
Date:
January 8, 2007
Creator:
Pruess, Karsten; Spycher, Nicolas & Kneafsey, Timothy J.
Object Type:
Article
System:
The UNT Digital Library