Relevant bibliographies by topics / Geology – Texas – Comal County

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
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Academic literature on the topic 'Geology – Texas – Comal County'

Author: Grafiati
Published: 4 June 2021
Last updated: 10 February 2022

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Journal articles on the topic "Geology – Texas – Comal County"

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Walter, Frank. "Comal County, Texas." Phi Delta Kappan 99, no. 5 (2018): 34–35. http://dx.doi.org/10.1177/0031721718754807.

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Comal County, Texas, may be rural but its students face many of the same challenges as students in urban districts. Communities In Schools of South Central Texas works with the local school district to identify student needs and provide critical supports to help young people prepare for life after high school.
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McGraw, A. Joachim, William B. Ellis, and Joseph H. Labadie. "Archaeological Investigations for the Canyon Hydroelectric Project, Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 1987, no. 1 (1987): Article 1. http://dx.doi.org/10.21112/ita.1987.1.1.

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Potter, Daniel R. "Archaeological Testing at Two Well Locations in New Braunfels, Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 1989, no. 1 (1989): Article 10. http://dx.doi.org/10.21112/ita.1989.1.10.

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Arnn III, John W. "An Archaeological Survey of the New Braunfels Little League Project, Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 1998, no. 1 (1998): Article 15. http://dx.doi.org/10.21112/ita.1998.1.15.

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Johnson, Matthew S., Anne Bolick, Mara Alexander, David Huffman, Ed Oborny, and Allen Monroe. "Fluctuations in Densities of the Invasive Gill Parasite Centrocestus formosanus (Trematoda: Heterophyidae) in the Comal River, Comal County, Texas, U.S.A." Journal of Parasitology 98, no. 1 (2012): 111–16. http://dx.doi.org/10.1645/ge-2841.1.

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Gibson, Randy, Benjamin T. Hutchins, Jean K. Krejca, Peter H. Diaz, and Peter S. Sprouse. "Stygobromus bakeri, a new species of groundwater amphipod (Amphipoda, Crangonyctidae) associated with the Trinity and Edwards aquifers of central Texas, USA." Subterranean Biology 38 (April 12, 2021): 19–45. http://dx.doi.org/10.3897/subtbiol.38.61787.

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A new stygobitic groundwater amphipod species, Stygobromus bakerisp. nov., is described from 4 central Texas limestone karst springs; John Knox Spring (Comal County), Jacob’s Well (Hays County), Mormon Spring (Travis County) and Salado Springs (Bell County). This species belongs to the predominately western Nearctic hubbsi species group of Stygobromus and differs from other species in the group by gnathopod 1 with row of 4 to 5 setae posterior to the defining angle, pereopods 6 and 7 with broadly expanded bases and distinct distoposterior lobes, gnathopods 1 and 2 with 2 rows of 3 singly inserted setae on the inner palm, and uropod 3 with single, slightly distal peduncular seta. Habitat, sympatric groundwater species, and conservation issues are discussed.
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Arnn, III, John W. "Archaeological Monitoring of a Parking Lot Construction Project in New Braunfels, Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 1997, no. 1 (1997): Article 10. http://dx.doi.org/10.21112/ita.1997.1.10.

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Mahoney, Richard, Harry Shafer, Steve Tomka, Lee Nordt, and Raymond Mauldin. "Royal Coachman (41CM111) An Early Middle Archaic Site along Cordova Creek in Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 2003, no. 1 (2003): Article 3. http://dx.doi.org/10.21112/ita.2003.1.3.

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Arnn, III, John W. "Archaeological Monitoring of a Sidewalk Construction Project in Landa Park, New Braunfels, Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 1997, no. 1 (1997): Article 11. http://dx.doi.org/10.21112/ita.1997.1.11.

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Arnn, III, John W. "Archaeological Investigations at the Landa Park Golf Course Pro Shop, New Braunfels, Comal County, Texas." Index of Texas Archaeology: Open Access Gray Literature from the Lone Star State 1997, no. 1 (1997): Article 9. http://dx.doi.org/10.21112/ita.1997.1.9.

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Dissertations / Theses on the topic "Geology – Texas – Comal County"

1

Dada, Olamide. "Reservoir Characterization of the Spraberry Formation, Borden County, West Texas." Thesis, University of Louisiana at Lafayette, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1557545.

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<p> The Spraberry Formation is a Leonardian age submarine fan deposit restricted to the Midland Basin. The formation consists of very fine-grained sandstone, medium to coarse grain size siltstones, organic shales and carbonate mudstones. These rocks show variability in sedimentary structures and bedding types varied from thinly laminated to convolute laminations. Bioturbations were present in some samples and soft sediment deformation, such as water escape features, sediment loading and flame structures. </p><p> The Spraberry Formation is a naturally fractured reservoir with low porosity and low matrix permeability. Porosity measured varied from 2% in rocks with poor reservoir quality such as the argillaceous siltstone and mudstone while good reservoir rocks had an average porosity of 9%. Seven lithofacies were identified based on sedimentary structures, grain size and rock fabrics. Petrographic analysis showed four porosity types: (1) intragraular porosity; (2) dissolution porosity; (3) fracture porosity and (4) intergranular porosity. Fractured porosity was only observed in the argillaceous siltstone lithofacies. </p><p> The prominent diagenetic influences on the Spraberry Formation are: quartz cementation, quartz overgrowth, illtization of smectite, feldspar dissolution, clay precipitation, carbonate cementation, formation of framboidal pyrite and fracture formation. These diagenetic features were observed using scanning electron microscope (SEM) and in thin sections. Generally, petrophysical properties, such as porosity and permeability, vary gradually from reservoir rocks to non-reservoir rock. Observed trends where: 1) increasing organic and argillaceous content with decreasing porosity and 2) increasing carbonate sediments and calcite cements with decreasing porosity. Mineralogical analysis from FTIR showed an abundance of quartz and calcite, while illite is the prominent clay mineral observed in all samples.</p>
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Edds, Donald Dean. "Structural geology of Black Butte area, Northwest Eagle Mountains, Hudspeth County, Texas." Kansas State University, 1987. http://hdl.handle.net/2097/18556.

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Lomago, Brendan Michael. "Subsurface Framework and Fault Timing in the Missourian Granite Wash Interval, Stiles Ranch and Mills Ranch Fields, Wheeler County, Texas." Thesis, Mississippi State University, 2019. http://pqdtopen.proquest.com/#viewpdf?dispub=10979211.

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<p> The recent and rapid growth of horizontal drilling in the Anadarko basin necessitates newer studies to characterize reservoir and source rock quality in the region. Most oil production in the basin comes from the Granite Wash reservoirs, which are composed of stacked tight sandstones and conglomerates that range from Virgillian (305&ndash;299 Ma) to Atokan (311&ndash;309.4 Ma) in age. By utilizing geophysical well logging data available in raster format, the Granite Wash reservoirs and their respective marine flooding surfaces were stratigraphically mapped across the regional fault systems. Additionally, well log trends were calibrated with coincident core data to minimize uncertainty regarding facies variability and lateral continuity of these intervals. In this thesis, inferred lithofacies were grouped into medium submarine fan lobe, distal fan lobe, and offshore facies (the interpreted depositional environments). By creating isopach and net sand maps in Petra, faulting in the Missourian was determined to have occurred syndepositionally at the fifth order scale of stratigraphic hierarchy.</p><p>
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Triyana, Yanyan. "Characterization of Rodessa Formation Reservoir (Lower Cretaceous) in Van Field, Van Zandt County, Texas." Texas A&M University, 2003. http://hdl.handle.net/1969/62.

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Boudreaux, Elisabeth L. "A Lithologic and Petrologic Reanalysis of a Lithic-Rich Tuff Within the Sierra Quemada Structure, Big Bend National Park, Brewster County, Texas." Thesis, University of Louisiana at Lafayette, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1553887.

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<p>The origin of the Mule Ear Spring Tuff (Tmet) member of the Chisos Formation of the Big Bend Group in Big Bend National Park (BBNP) (Maxwell et al., 1967) and its relationship to Sierra Quemada (SQ) is debated (a caldera versus a ring dike complex without associated collapse), as well as how the exact age of the Tmet relates to volcanic material present in and around the SQ structure. The main objectives were to identify main types of clasts present within the lithic-rich tuff and to determine the relative age of the lithic-rich tuff within SQ in order to help identify the type of structure and the type of activity&mdash;caldera with collapse or simply a ring dike. </p><p> Detailed lithologic and petrologic descriptions of hand samples and thin sections were performed to determine relationships of the clasts within the lithic-rich tuff to units outside of SQ. The identification and comparison of the samples produced a relative age of approximately 30.3 Ma to 33.7 Ma for the activity within SQ, which is comparable to published ages of Tmet. </p><p> Measurements of the clasts, along with the apparent thickness of the lithic-rich tuff, were compared with studies done on lithic-rich accumulations within modern and ancient calderas. The concentration and sizes of the clasts within the lithic-rich tuff from SQ are comparable to, or larger than, calderas with similar diameters to the SQ structure. The results are compatible with the formation of a typical resurgent caldera. The lack of lithic fragments younger than Tmet within the tuff is compatible with the age of Tmet. Therefore, the age of activity and formation of SQ occurred approximately 34 Ma. </p>
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Maxey, George F. "Geology as a Georegional Influence on Quercus Fagaceae Distribution in Denton and Coke Counties of Central and North Central Texas and Choctaw County of Southeastern Oklahoma, Using GIS as an Analytical Tool." Thesis, University of North Texas, 2007. https://digital.library.unt.edu/ark:/67531/metadc5144/.

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This study elucidates the underlying relationships for the distribution of oak landcover on bedrock and soil orders in two counties in Texas and one in Oklahoma. ESRI's ArcGis and ArcMap was used to create surface maps for Denton and Coke Counties, Texas and Choctaw County, Oklahoma. Attribute tables generated in GIS were exported into a spreadsheet software program and frequency tables were created for every formation and soil order in the tri-county research area. The results were both a visual and numeric distribution of oaks in the transition area between the eastern hardwood forests and the Great Plains. Oak distributions are changing on this transition area of the South Central Plains. The sandy Woodbine and Antlers formations traditionally associated with the largest oak distribution are carrying oak coverage of approximately 31-32% in Choctaw and Denton Counties. The calcareous Blackland and Grand Prairies are traditionally associated with treeless grasslands, but are now carrying oak and other tree landcover up to 18.9%. Human intervention, including the establishment of artificial, political and social boundaries, urbanization, farming and fire control have altered the natural distribution of oaks and other landcover of this unique georegion.
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Ryu, Changsu. "Sequence stratigraphic controls of hydrocarbon reservoir architecture case study of Late Permian (Guadalupian) Queen Formation, Means Field, Andrews County, Texas /." Texas A&M University, 2002. http://hdl.handle.net/1969/530.

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Witt, Benjamin A. "Differential use of space: An analysis of the Aubrey Clovis site." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4828/.

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The Aubrey Clovis site is one of the oldest late-Pleistocene sites in North America, dated to ~11,550 B.P., and contains two camps with a range of lithic debitage, numerous hearths, and excellent faunal preservation. Couched in rules of classification, a series of artifact distributions are analyzed with qualitative and quantitative techniques, including maps produced in a geographic information system (GIS) and tests of artifact associations using correlation statistics. Theoretical and methodological protocols are promoted to improve spatial analysis in archaeology. The results support the short-term occupation interpretation and expose the differential patterning among bone, stone, and raw materials distributions. The spatial structure and diverse content of the site challenge models of Clovis-age people as strictly big game hunters.
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Veni, George. "Effects of Urbanization on the Quantity and Quality of Storm Water Runoff Recharging Through Caves into the Edwards Aquifer, Bexar County, Texas." TopSCHOLAR®, 1985. http://digitalcommons.wku.edu/theses/1842.

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Eighty-nine caves and sinkholes were investigated in the Edwards Aquifer recharge zone in Bexar County, Texas. The study examined their hydrogeologic and topographic origins and distribution, relationships to major fracture traces, quantity of recharge into the aquifer and degree of sensitivity towards degradation of the aquifer’s water quality. Groundwater traces were attempted to determine aquifer flow routes, time of groundwater travel, groundwater volume within conduits, and the aquifer’s capacity for dilution and dispersion of recharged contaminants. Trends in water quality were examined to quantify the volume and variety of contaminants recharged into the aquifer and to determine the effects of urbanization upon the Edwards Aquifer. The Edwards recharge zone was hydrogeologically assessed to rate the sensitivity of its areas. Socio-political impacts on recharge zone development were also examined. Based on the results of the above outlined research method, the conclusions of this investigation are that caves and sinkholes contribute substantial recharge into the Edwards Aquifer, rapidly transmit that recharge to the aquifer and are sensitive sites for potential contamination. The entire recharge zone was determined to be very sensitive to contamination. No significant differences were found between areas within the recharge zone to scale their degree of sensitivity. Major conduit flow networks were found to exist within the aquifer and their groundwater flow paths could be traced. Urban development of the Edwards recharge zone was shown to decrease the volume of recharge and degrade the aquifer’s water quality. No significant detrimental effects on the aquifer were observed. The volume of diminished recharge and the concentration of recharged contaminants that were necessary to produce significant adverse effects on the aquifer were not determined due to lack of precipitation during the study period and inconclusive groundwater tracings. It was recommended that further development of the recharge zone be suspended until the effects of urbanization are quantified.
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Maxey, George F. Ferring C. Reid. "Geology as a georegional influence on Quercus Fagaceae distribution in Denton and Coke Counties of central and north central Texas and Choctaw County of southeastern Oklahoma, using GIS as an analytical tool." [Denton, Tex.] : University of North Texas, 2007. http://digital.library.unt.edu/permalink/meta-dc-5144.

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Books on the topic "Geology – Texas – Comal County"

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J, McManus. Comal County, Texas and New Braunfels, Texas Germans, 1845-1846. F.T. Ingmire, 1985.

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Schaefer, Harvey. Dripping Springs, Comal County, Texas: A supplement to The boy captives. Omni Publishers, 2000.

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Rahe, Alton J. History of Sattler and Mountain Valley school in Comal County, Texas, 1846-1964: With personal reflections. Walsworth Pub. Co., 1999.

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Hanson, John A. Geologic framework and hydrogeologic characteristics of the Edwards Aquifer outcrop, Hays County, Texas. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Weston, Jason D. Archaeological survey and geoarchaeological investigations at 41BX1271, Walker Ranch Park, Bexar County, Texas. Center for Archaeological Research, The University of Texas at San Antonio, 2003.

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Clark, Allan K. Geologic framework and hydrogeologic features of the Glen Rose Limestone, Camp Bullis training site, Bexar County, Texas. U.S. Dept. of the Interior, U.S. Geological Survey, 2003.

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N, Slattery Richard, Geological Survey (U.S.), and United States. Natural Resources Conservation Service, eds. Effects of brush management on the hydrologic budget and water quality in and adjacent to Honey Creek State Natural Area, Comal County, Texas, 2001-10. U.S. Dept. of the Interior, U.S. Geological Survey, 2011.

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Fogg, Graham E. Reservoir modeling of restricted platform carbonates: Geologic/geostatistical characterization of interwell-scale reservoir heterogeneity, Dune Field, Crane County, Texas. Bureau of Economic Geology, University of Texas at Austin, 1990.

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Ambrose, William A. Facies heterogeneity and brine-disposal potential of Miocene barrier-island, fluvial, and deltaic systems: Examples from Northeast Hitchcock and Alta Loma fields, Galveston County, Texas. Bureau of Economic Geology, University of Texas at Austin, 1990.

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Tertiary coals in south Texas: Anomalous cannel-like coals of Webb County (Claiborne Group, Eocene) and lignites of Atascosa County (Jackson Group, Eocene)--geologic setting, character, source-rock and coal-bed methane potential : field trip guidebook. U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

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Book chapters on the topic "Geology – Texas – Comal County"

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Hook, Robert W., and Peter D. Warwick. "Eocene Bituminous Coal Deposits of the Claiborne Group, Webb County, Texas." In Geologic Assessment of Coal in the Gulf of Mexico Coastal Plain. American Association of Petroleum Geologists, 2011. http://dx.doi.org/10.1306/13281370st621291.

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Winzinger, R., J. L. Brink, K. S. Patel, C. B. Davenport, Y. R. Patel, and G. C. Thakur. "Design of a Major CO2 Flood—North Ward Estes Field, Ward County, Texas." In The Integration of Geology, Geophysics, Petrophysics and Petroleum Engineering in Reservoir Delineation, Description and Management. American Association of Petroleum Geologists, 1991. http://dx.doi.org/10.1306/sp535c35.

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Conference papers on the topic "Geology – Texas – Comal County"

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Blake, Elliot, Asmara Lehrmann, Bailey Welch, et al. "SEDIMENTOLOGY AND STRATIGRAPHY OF A LOWER CRETACEOUS DINOSAUR TRACK SITE, HERITAGE MUSEUM OF THE TEXAS HILL COUNTRY, COMAL COUNTY, CENTRAL TEXAS." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-300085.

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Lehrmann, Asmara, Elliot Blake, Kexin Sun, et al. "GEOCHEMISTRY AND ENVIRONMENTAL ANALYSIS OF A LOWER CRETACEOUS DINOSAUR TRACK SITE, HERITAGE MUSEUM OF THE TEXAS HILL COUNTRY, COMAL COUNTY, CENTRAL TEXAS." In GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-300061.

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Schoen, Robert, and Chris A. Barker. "GEOLOGY OF THE ALTO RELEX AREA, SIERRA DEL CARMEN, BIG BEND NATIONAL PARK, BREWSTER COUNTY, TEXAS." In 51st Annual GSA South-Central Section Meeting - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017sc-289558.

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Shelley, Robert, Oladapo Oduba, and Howard Melcher. "Machine Learning and Artificial Intelligence Provides Wolfcamp Completion Design Insight." In SPE Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/204199-ms.

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Abstract The subject of this paper is the application of a unique machine learning approach to the evaluation of Wolfcamp B completions. A database consisting of Reservoir, Completion, Frac and Production information from 301 Multi-Fractured Horizontal Wolfcamp B Completions was assembled. These completions were from a 10-County area located in the Texas portion of the Permian Basin. Within this database there is a wide variation in completion design from many operators; lateral lengths ranging from a low of about 4,000 ft to a high of almost 15,000 ft, proppant intensities from 500 to 4,000 lb/ft and frac stage spacing from 59 to 769 ft. Two independent self-organizing data mappings (SOM) were performed; the first on completion and frac stage parameters, the second on reservoir and geology. Characteristics for wells assigned to each SOM bin were determined. These two mappings were then combined into a reservoir type vs completion type matrix. This type of approach is intended to remove systemactic errors in measuement, bias and inconsistencies in the database so that more realistic assessments about well performance can be made. Production for completion and reservoir type combinations were determined. As a final step, a feed forward neural network (ANN) model was developed from the mapped data. This model was used to estimate Wolfcamp B production and economics for completion and frac designs. In the performance of this project, it became apparent that the incorporation of reservoir data was essential to understanding the impact of completion and frac design on multi-fractured horizontal Wolfcamp B well production and economic performance. As we would expect, wells with the most permeability, higher pore pressure, effective porosity and lower water saturation have the greatest potential for hydrocarbon production. The most effective completion types have an optimum combination of proppant intensity, fluid intensity, treatment rate, frac stage spacing and perforation clustering. This paper will be of interest to anyone optimizing hydraulically fractured Wolfcamp B completion design or evaluating Permian Basin prospects. Also, of interest is the impact of reservoir and completion characteristics such as permeability, porosity, water saturation, pressure, offset well production, proppant intensity, fluid intensity, frac stage spacing and lateral length on well production and economics. The methodology used to evaluate the impact of reservoir and completion parameters for this Wolfcamp project is unique and novel. In addition, compared to other methodologies, it is low cost and fast. And though the focus of this paper is on the Wolfcamp B Formation in the Midland Basin, this approach and workflow can be applied to any formation in any Basin, provided sufficient data is available.
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Reports on the topic "Geology – Texas – Comal County"

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Simms, Janet, and Katie Martin. Geophysical feasibility study to identify signs of chimney drain/drainage blanket clogging in Canyon Dam Canyon Lake, Comal County, Texas. Engineer Research and Development Center (U.S.), 2019. http://dx.doi.org/10.21079/11681/31461.

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Geologic framework and hydrogeologic characteristics of the Edwards Aquifer outcrop, Comal County, Texas. US Geological Survey, 1994. http://dx.doi.org/10.3133/wri944117.

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