Relevant bibliographies by topics / Drill core analysis

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Drill core analysis'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Drill core analysis"

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Tsao, Chung Chen, Kei Lin Kuo, I. Chien Hsu, and G. T. Chern. "Analysis of Core-Candlestick Drill in Drilling Composite Materials." Key Engineering Materials 419-420 (October 2009): 337–40. http://dx.doi.org/10.4028/www.scientific.net/kem.419-420.337.

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Unlike ductile metals cutting mechanism, the interfaces between fiber and matrix as a transitional layer experience mismatched deformation in machining process. In general, the most frequent operation performed on composite materials is drilling with a twist drill to generate a hole owing to their versatility and low production cost. However, delamination is one of the most common defects in drilling laminated fiber-reinforced composites and can cause a significant reduction in the load-carrying capacity of a structure. At the periphery, using such special drills as saw drill, candlestick dril
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Lemy, F., J. Hadjigeorgiou, P. Côté, and X. Maldague. "Image analysis of drill core." Mining Technology 110, no. 3 (2001): 172–77. http://dx.doi.org/10.1179/mnt.2001.110.3.172.

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Fu, Yu Kun, Chuan Jun Han, Juan Wang, and Yang Yi. "Design and Analysis of Rubber Core with PTFE Ring in Ram BOP." Applied Mechanics and Materials 155-156 (February 2012): 686–90. http://dx.doi.org/10.4028/www.scientific.net/amm.155-156.686.

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In order to enhance the sealing performance of rubber core in ram blowout preventer, this paper designed a new structure of the rubber core which embedded a half-PTFE ring in the central of rubber core based on the characteristics of failure mode on the contact surface. Through carrying out the experiment on the rubber under different temperature and pressure to determine the constitutive relation of the rubber core, this paper has established the 3D model of rubber core and drill pipe, accomplished the contact finite element analysis under 20MPa and compared with the general rubber core. The
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Lopez-Diaz, Fernando, and Fernando Bastida. "Structural data from drill core." Geological Magazine 131, no. 5 (1994): 619–23. http://dx.doi.org/10.1017/s0016756800012401.

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AbstractA graphical method for the analysis of the orientation of planar and linear structural elements in drill core is presented. Simple computation and projection operations applied to data taken from elements traced on the cylindrical surface of the core are required. To know a structural element(s) of reference, the method requires detailed structural analysis of the surface geology around the drill hole.
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Warming, E., A. Svensson, P. Vallelonga, and M. Bigler. "A technique for continuous detection of drill liquid in ice cores." Journal of Glaciology 59, no. 215 (2013): 503–6. http://dx.doi.org/10.3189/2013jog12j124.

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AbstractWhen drilling ice cores deeper than ∼100 m, drill liquid is required to maintain ice-core quality and to limit borehole closure. Due to high-pressure air bubbles in the ice, the ice core can crack during drilling and core retrieval, typically at 600–1200 m depth in Greenland. Ice from this ‘brittle zone’ can be contaminated by drill liquid as it seeps through cracks into the core. Continuous flow analysis (CFA) systems are routinely used to analyse ice for chemical impurities, so the detection of drill liquid is important for validating accurate measurements and avoiding potential inst
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Sjöqvist, A. S. L., M. Arthursson, A. Lundström, E. Calderón Estrada, A. Inerfeldt, and H. Lorenz. "An innovative optical and chemical drill core scanner." Scientific Drilling 19 (May 29, 2015): 13–16. http://dx.doi.org/10.5194/sd-19-13-2015.

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Abstract. We describe a new innovative drill core scanner that semi-automatedly analyses drill cores directly in drill core trays with X-ray fluorescence spectrometry, without the need for much sample preparation or operator intervention. The instrument is fed with entire core trays, which are photographed at high resolution and scanned by a 3-D profiling laser. Algorithms recognise the geometry of the core tray, number of slots, location of the drill cores, calculate the optimal scanning path, and execute a continuous XRF analysis of 2 cm width along the core. The instrument is equipped with
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Nguyen, Dong Truong, and Chris Clarkson. "THE ORGANISATION OF DRILL PRODUCTION AT A NEOLITHIC LITHIC WORKSHOP SITE OF BAI BEN, CAT BA ISLAND, VIETNAM." Bulletin of the Indo-Pacific Prehistory Association 33 (November 14, 2014): 24. http://dx.doi.org/10.7152/bippa.v33i0.14508.

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We investigate stone drill point production, use, maintenance, and discard from a technological perspective at the Late Neolithic workshop of Bai Ben on Cat Ba Island, Northeastern Vietnam. Bai Ben contains over 18,000 retouched chert flakes classified as drill points and dating to c.3000BP. Large scale production of drills most likely took place for reasons of mass production of drilled organic and inorganic objects. Few of such drilled objects are found at the site, perhaps due to poor organic preservation or removal of finished objects for trade and exchange. An analysis of attribute on dri
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RIX, JULIUS, ROBERT MULVANEY, JIALIN HONG, and DAN ASHURST. "Development of the British Antarctic Survey Rapid Access Isotope Drill." Journal of Glaciology 65, no. 250 (2019): 288–98. http://dx.doi.org/10.1017/jog.2019.9.

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ABSTRACTThe British Antarctic Survey Rapid Access Isotope Drill is an innovative new class of electromechanical ice drill, which has recently been used to drill the deepest dry hole drilled by an electromechanical auger drill. The record-breaking depth of 461.58 m was drilled in just over 104 hours at Little Dome C. The drill collects ice chippings, for water stable isotope analysis, rather than an ice core. By not collecting a core the winch can be geared for speed rather than core breaking and is lightweight. Furthermore, emptying of the chippings is performed by simply reversing the drill m
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Blümich, Bernhard, Sofia Anferova, Renate Pechnig, Hansgeorg Pape, Juliane Arnold, and Christoph Clauser. "Mobile NMR for porosity analysis of drill core sections." Journal of Geophysics and Engineering 1, no. 3 (2004): 177–80. http://dx.doi.org/10.1088/1742-2132/1/3/001.

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Shigematsu, Norio, Makoto Otsubo, Koichiro Fujimoto, and Nobuaki Tanaka. "Orienting drill core using borehole-wall image correlation analysis." Journal of Structural Geology 67 (October 2014): 293–99. http://dx.doi.org/10.1016/j.jsg.2014.01.016.

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Dissertations / Theses on the topic "Drill core analysis"

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Gao, Shanshan, and 高珊珊. "Coring process monitoring for strength of grout, concrete and rock in laboratory testing." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45530361.

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Ball, Nathaniel H. Atchley Stacy C. "Depositional and diagenetic controls on reservoir quality and their petrophysical predictors within the Upper Cretaceous (Cenomanian) Doe Creek Member of the Kaskapau Formation at Valhalla Field, Northwest Alberta." Waco, Tex. : Baylor University, 2009. http://hdl.handle.net/2104/5296.

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Jardine, Mitchel. "Three dimensional quantitative textural analysis of nickel sulphide ore using X-ray computed tomography and grey level co-occurrence matrices on drill core." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20489.

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Alongside the global trend to mine and process lower grade and more mineralogically complex ores, there has been an increased awareness of the prevalence of ore heterogeneity. Ore texture - the interrelationship of minerals comprising a rock, has been identified as one of the primary geometallurgical indicators of ore variability. It is well known that a relationship exists between ore texture and the resultant metallurgical performance (ore hardness, throughput, liberation, grade, recovery). Consequently, there exists a need to rapidly, routinely, cost effectively, and reliably quantify ore t
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Hibbert, Fiona Danielle. "Dynamics of the British Ice Sheet and prevailing hydrographic conditions for the last 175,000 years : an investigation of marine sediment core MD04-2822 from the Rockall Trough." Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/3136.

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This study presents a stratigraphic investigation of the marine sediment core MD04-2822 from the Rockall Trough (56° 50.54' N, 11° 22.96' W; 2344 m water depth). This core is currently the only available high resolution record for the calibration of Late Quaternary sedimentary sequences of the British (Hebridean) margin. It therefore offers an unprecedented archive of changing sedimentological and climatological conditions for the last 175,000 years. The high resolution, multi-proxy records have enabled surface and deep water conditions within the Rockall Trough to be reconstructed. In additio
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Johnson, Reuben Carl. "Wetumpka impact structure modeled as the exposed remains of a large shallow water marine-target impact crater for analysis and interpretation of two drill cores taken from near the structure's geographic center." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Theses/JOHNSON_REUBEN_28.pdf.

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Duée, Cédric, Beate Orberger, Nicolas Maubec, et al. "Challenges in coupled on-line-on-mine-real time mineralogical and chemical analyses on drill cores." Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2018. http://nbn-resolving.de/urn:nbn:de:bsz:105-qucosa-231144.

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The SOLSA project aims to develop an innovative on-line-on-mine-real-time expert system, combining sonic drilling, mineralogical and chemical characterization and data treatment. Ideally, this combination, highly demanded by mining and metallurgical companies, will speed up exploration, mining and processing. In order to evaluate the instrumental parameters for the SOLSA expert system, portable and laboratory analyses have been performed on four samples with contrasting lithologies: siliceous breccia, serpentinized harzburgite, sandstone and granite. More precisely, we evaluated the influence
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Duée, Cédric, Beate Orberger, Nicolas Maubec, et al. "Challenges in coupled on-line-on-mine-real time mineralogical and chemical analyses on drill cores." TU Bergakademie Freiberg, 2017. https://tubaf.qucosa.de/id/qucosa%3A23177.

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The SOLSA project aims to develop an innovative on-line-on-mine-real-time expert system, combining sonic drilling, mineralogical and chemical characterization and data treatment. Ideally, this combination, highly demanded by mining and metallurgical companies, will speed up exploration, mining and processing. In order to evaluate the instrumental parameters for the SOLSA expert system, portable and laboratory analyses have been performed on four samples with contrasting lithologies: siliceous breccia, serpentinized harzburgite, sandstone and granite. More precisely, we evaluated the influence
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Guiral, Vega Juan Sebastian. "Textural and Mineralogical Characterization of Li-pegmatite Deposit: Using Microanalytical and Image Analysis to Link Micro and Macro Properties of Spodumene in Drill Cores. : Keliber Lithium Project, Finland." Thesis, Luleå tekniska universitet, Mineralteknik och metallurgi, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70422.

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Lithium represents one of the strategic elements for the rest of the 21st century due to its increasing demand in technological applications. Therefore, new efforts should be focused on the optimization of mineral characterization processes, which link the ore properties with its behaviour during downstream processes. These efforts should result in reducing operational risks and increasing resources utilization. The methodology presented in this study is based on the application of several classification techniques, aiming the mineral and textural characterization of two spodumene pegmatite de
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Kumar, Munish. "Multiphase flow in reservoir cores using digital core analysis." Phd thesis, 2009. http://hdl.handle.net/1885/150708.

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Youn, Heejung 1976. "Effect of verification core hole on the point bearing capacity of drilled shafts." 2008. http://hdl.handle.net/2152/18183.

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For many projects involving drilled shafts, cores are required to be taken below the shaft base for visual identification of the underlying material. For example, the Texas Department of Transportation (TxDOT) requires a core length of at least 1.5 m (5 ft) or equal to the shaft diameter, whichever is greater, at the shaft base. Although the verification cores are to be extracted at the shaft base, The Department of Transportation of many states do not provide guidance to eliminate the effect of the verification core on the point bearing capacity. A recent study shows that the verification cor
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Books on the topic "Drill core analysis"

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M, Isaacs Caroline, and Geological Survey (U.S.), eds. Mass properties of conventional core samples from the Monterey Formation, Union-Humble Bell Fee 156, West Cat Canyon oil field, Santa Maria Basin, California. U.S. Dept. of the Interior, Geological Survey, 1991.

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Ashley, Roger P. Lithology, petrography, and geochemistry of three cores from the Goldfield mining district, Nevada. U.S. Dept. of the Interior, Geological Survey, 1990.

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C, Day Warren, and Geological Survey (U.S.), eds. Tabular summary of lithologic logs and geologic characteristics from diamond drill holes in the western International Falls and the Roseau 1p0s x 2p0s quadrangles, northern Minnesota. U.S. Geological Survey, 1989.

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Society of Core Analysts European Core Analysis Symposium (2nd 1991 London, England). Advances in core evaluation. Gordon and Breach, 1991.

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Ege, John R. Core index: A numerical core-logging procedure for estimating rock quality. Dept. of the Interior, U.S. Geological Survey, 1987.

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Ege, John R. Core index: A numerical core-logging procedure for estimating rock quality. Dept. of the Interior, U.S. Geological Survey, 1987.

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R, Ege John. Core index: A numerical core-logging procedure for estimating rock quality. Dept. of the Interior, U.S. Geological Survey, 1987.

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Mosier, Elwin L. ICP-AES analytical results for Precambrian basement rocks in or near Missouri. U.S. Dept. of the Interior, Geological Survey, 1988.

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Luepke, Gretchen. Heavy minerals from cores in a deep-sea channel off Cape Mendocino, California. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.

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Mosier, Elwin L. ICP-AES analytical results for Precambrian basement rocks in or near Missouri. U.S. Dept. of the Interior, Geological Survey, 1988.

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Book chapters on the topic "Drill core analysis"

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Arthur, R. J., J. C. Laul, and N. Hubbard. "Energy-Dispersive XRF Analysis of Intact Salt Drill Cores." In Advances in X-Ray Analysis. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2471-3_28.

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"Front Matter." In Manual on Drilling, Sampling, and Analysis of Coal, Compiled by ASTM Subcommittees D05.18 and D05.23. ASTM International100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, 1992. http://dx.doi.org/10.1520/mnl10113m.

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Guidelines on state-of-the-art aspects of drilling and sampling coal. Can be modified as necessary to fit your specific needs (for example, you can use them to prepare your own field manual to standardize exploration activities). Chapters include: drilling equipment; • geophysical logging; • description of coal and rocks; • sampling of coal cores; • laboratory analysis of coal and rock drill core samples; • and evaluation of core data. Also serves as a reference document for those who use the core sampling ASTM standard Practice for Collection of Coal Samples from Core (D 5192) (included in the Appendix).
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Lee, P. J. "Estimation Update and Feedback Procedures." In Statistical Methods for Estimating Petroleum Resources, edited by Jo Anne DeGraffenreid. Oxford University Press, 2008. http://dx.doi.org/10.1093/oso/9780195331905.003.0012.

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A basin or subsurface study, which is the first step in petroleum resource evaluation, requires the following types of data: • Reservoir data—pool area, net pay, porosity, water saturation, oil or gas formation volume factor, in-place volume, recoverable oil volume or marketable gas volume, temperature, pressure, density, recovery factors, gas composition, discovery date, and other parameters (refer to Lee et al., 1999, Section 3.1.2). • Well data—surface and bottom well locations; spud and completion dates; well elevation; history of status; formation drill and true depths; lithology; drill stem tests; core, gas, and fluid analyses; and mechanical logs. • Geochemical data—types of source rocks, burial history, and maturation history. • Geophysical data—prospect maps and seismic sections. Well data are essential when we construct structural contour, isopach, lithofacies, porosity, and other types of maps. Geophysical data assist us when we compile number-of-prospect distributions and they provide information for risk analysis.
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Kramer Bernhard, Julia, Wayne Barnett, Ron Uken, and Russell Myers. "Chapter 7: Structural Analysis of Drill Core for Mineral Exploration and Mining: Review and Workflow Toward Domain-Based 3-D Interpretation." In APPLIED STRUCTURAL GEOLOGY OF ORE-FORMING HYDROTHERMAL SYSTEMS. Society of Economic Geologists, 2020. http://dx.doi.org/10.5382/rev.21.07.

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Rahman, Siti Sarah Ab, Michael C. Pöppelreiter, Grisel Jimenez, Ari Yusliandi, and Redwan Rosli. "Karst in Miocene Carbonate Buildups of Central Luconia Province, Offshore Sarawak, Malaysia." In Cenozoic Isolated Carbonate Platforms—Focus Southeast Asia. SEPM (Society for Sedimentary Geology), 2023. http://dx.doi.org/10.2110/sepmsp.114.11.

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Karst is a common phenomenon in carbonate buildups worldwide. It has significant economic effects on exploration, drilling, field development, and secondary recovery mechanisms. In Malaysia, over 250 Miocene carbonate buildups were mapped offshore in the Central Luconia province of Sarawak, and roughly 65 carbonate buildups have been drilled. Almost every field has encountered indications for high permeability zones likely associated with karst, such as mud losses and drill bit drop during drilling activities; some fields were left abandoned due to mud losses that could not be controlled. Hence, it is important to predict and avoid karst features while drilling, during field operations, and for future carbon dioxide storage, to reduce development costs. The geometry, distribution, and dimension of karst structures in Central Luconia fields remain poorly known, as there have been very few systematic studies conducted. This paper provides a comprehensive characterization of karst features typical of Miocene carbonate buildups. The analysis was based on core and thin-section description, well-log characterization, and seismic spectral decomposition attribute interpretation. Importantly, the subsurface description is supplemented with the analysis of drilling parameters of some 68 wells from 36 carbonate buildups located across the Central Luconia province. A total of 51 wells encountered mud losses of varying intensities, which have been classified and plotted on maps. Loss circulation depths were recorded and compared to core samples that showed characteristics indicative of dissolution and exposure, such as chalkified texture, and were marked on well logs, which often showed unusually high porosity readings in the karstified intervals. All possible karst intervals were documented for further detailed seismic interpretation. Seismic spectral decomposition attributes techniques were applied to seismic data of Jintan and F6 platforms in order to map karst features, which were observed to be dendritic, round, and elongated patterns of several hundred meters in diameter and tens of meters deep. These features are particularly well-developed below backstepping external buildup geomorphology. The analysis showed that particularly strong losses occurred in stratigraphic intervals located toward the center of buildups. These were predicted using seismic spectral decomposition attribute signatures of karst features. The most extensive buildups with the strongest karstification were observed in the central part of the Central Luconia province.
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Overbay, William J., Tench C. Page, Dennis J. Krasowski, Mark H. Bailey, and Thomas C. Matthews. "Geology, Structural Setting, and Mineralization of the Dolores District, Chihuahua, Mexico." In Northern Sierra Madre Occidental Gold-Silver Mines, Mexico. Society of Economic Geologists, 2010. http://dx.doi.org/10.5382/gb.42.ch03.

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Abstract The Dolores project is located in the Sierra Madre Occidental mountain range of northern Mexico, near the historic mining district of Dolores in the state of Chihuahua. Exploratory drilling by Minefinders Corporation, Ltd., began in 1996 and has resulted in the discovery of one of Mexico's largest undeveloped gold-silver deposits. The regional geologic history of the area is dominated by three phases of volcanism: (1) A period of intermediate composition volcanism that resulted in deposition of voluminous andesitic flows and volcaniclastics interlayered with lesser amounts of felsic ash (the Lower volcanic series). This occurred from ˜46 to 35 Ma, (2) The first phase was closely followed by eruption of dominantly felsic ash flow tuffs and flows of rhyolitic to latitic composition (the Upper volcanic series), which occurred between ˜35 and 27 Ma, (3) Finally, intermittent eruption of basaltic andesite in thin flows occurred from <27 to 3 Ma. Deposition of the Baucarit Formation, a conglomeratic basin-fill sedimentary unit with thin interlayers of basalt, also occurred in down-dropped basins during the Pliocene to Pleistocene, or approximately 5 to 1 m.y. ago. Definitive age dates for the mineralization at Dolores have yet to be established. Ages of vein-style Ag-Au mineralization throughout the Sierra Madre Occidental are reported to be between about 49 to 27 Ma (Clark et al., 1979). Geologic observations at Dolores suggest that mineralization occurred following the episode of voluminous andesitic volcanism and generally at the same time as deposition of the overlying latitic pyroclastic tuffs of the Lower volcanic series, because mineralization and alteration are generally confined to the andesites and the lowermost portion of the volcaniclastic rocks. It follows that the Dolores mineralization occurred prior to deposition of the Upper volcanic series and dates from about 38 to 35 Ma of age. Within the district, regional north-northwest-trending structures controlled emplacement of a series of porphyritic andesitic to latitic dikes and sills in conjunction with emplacement of several larger hypabyssal north-northwest-elongate, domal intrusive bodies that formed during deposition of the Lower volcanic series. Epithermal, low-sulfidation fluids, believed to be associated with the waning stages of the intrusive episode, deposited quartz-adularia and precious metals. Wider zones of mineralization formed within areas of higher permeability and where boiling and episodic hydrothermal brecciation were focused in areas of greater structural complexity. Consequently, the mineralization occurs both within high-level stockworks, breccias, and disseminations formed near the contact of the felsic volcaniclastic rocks with the underlying andesites and within more tightly confined north-northwest-trending feeders that continue to depth. Gold predominates in the higher levels of the system and can be found across widths of 100 m or more at an average grade of from 1 to up to 2 g/t. Mineralized feeders occur below these zones and can be from 2 to more than 20 m in width, with gold content of up to 10 to more than 200 g/t and silver content of 1 to more than 5 kg/t. In the studied resource area, Ag/Au ratios appear to be zoned about a central domal intrusive and vary from about 100:1 near the intrusive to less than 10:1 to the north and south. Trace element geochemistry includes variable Hg, As, and Sb in the higher elevations with increasing amounts of Pb, Zn, and minor Cu at depth. A combined program of reverse circulation and core drilling totaling 61,441 m in 291 holes has revealed mineralization that occurs within an area that is approximately 2,800 m long by more than 600 m across. Additional drill intercepts and surface geochemical assays outside of this area indicate the potential to increase the resource base throughout an overall area that is approximately 4,000 m by 1,200 m. A resource study within the most densely drilled 1,900 by 300 m area was completed in 2000. Economic analysis, based on work by a major international engineering firm, indicates that a bulk-minable resource of approximately 67 Mt, at a gold equivalent (Aueq) grade of 1.85 g/t, can be developed by open-pit mining methods. The total calculated resource within the study area is 100.1 Mt containing 2.45 Moz of gold and 129.7 Moz of silver, or 4.62 Moz of Aueq at a 60:1 ratio.
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Ronge, T. A., and S. Dbritto. "Data report: using XRF scanning–derived grain size analysis for rapid assessment of bottom current velocities on long drill cores from the southern Scotia Sea, IODP Expedition 382." In Proceedings of the International Ocean Discovery Program. International Ocean Discovery Program, 2024. http://dx.doi.org/10.14379/iodp.proc.382.201.2024.

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Sharman, Glenn R., Daniel F. Stockli, Peter Flaig, Robert G. Raynolds, Marieke Dechesne, and Jacob A. Covault. "Tectonic influence on axial-transverse sediment routing in the Denver Basin." In Tectonic Evolution of the Sevier-Laramide Hinterland, Thrust Belt, and Foreland, and Postorogenic Slab Rollback (180–20 Ma). Geological Society of America, 2022. http://dx.doi.org/10.1130/2021.2555(11).

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ABSTRACT Detrital zircon U-Pb and (U-Th)/He ages from latest Cretaceous–Eocene strata of the Denver Basin provide novel insights into evolving sediment sourcing, recycling, and dispersal patterns during deposition in an intracontinental foreland basin. In total, 2464 U-Pb and 78 (U-Th)/He analyses of detrital zircons from 21 sandstone samples are presented from outcrop and drill core in the proximal and distal portions of the Denver Basin. Upper Cretaceous samples that predate uplift of the southern Front Range during the Laramide orogeny (Pierre Shale, Fox Hills Sandstone, and Laramie Formation) contain prominent Late Cretaceous (84–77 Ma), Jurassic (169–163 Ma), and Proterozoic (1.69–1.68 Ga) U-Pb ages, along with less abundant Paleozoic through Archean zircon grain ages. These grain ages are consistent with sources in the western U.S. Cordillera, including the Mesozoic Cordilleran magmatic arc and Yavapai-Mazatzal basement, with lesser contributions of Grenville and Appalachian zircon recycled from older sedimentary sequences. Mesozoic zircon (U-Th)/He ages confirm Cordilleran sources and/or recycling from the Sevier orogenic hinterland. Five of the 11 samples from syn-Laramide basin fill (latest Cretaceous–Paleocene D1 Sequence) and all five samples from the overlying Eocene D2 Sequence are dominated by 1.1–1.05 Ga zircon ages that are interpreted to reflect local derivation from the ca. 1.1 Ga Pikes Peak batholith. Corresponding late Mesoproterozoic to early Neoproterozoic zircon (U-Th)/He ages are consistent with local sourcing from the southern Front Range that underwent limited Mesozoic–Cenozoic unroofing. The other six samples from the D1 Sequence yielded detrital zircon U-Pb ages similar to pre-Laramide units, with major U-Pb age peaks at ca. 1.7 and 1.4 Ga but lacking the 1.1 Ga age peak found in the other syn-Laramide samples. One of these samples yielded abundant Mesozoic and Paleozoic (U-Th)/He ages, including prominent Early and Late Cretaceous peaks. We propose that fill of the Denver Basin represents the interplay between locally derived sediment delivered by transverse drainages that emanated from the southern Front Range and a previously unrecognized, possibly extraregional, axial-fluvial system. Transverse alluvial-fluvial fans, preserved in proximal basin fill, record progressive unroofing of southern Front Range basement during D1 and D2 Sequence deposition. Deposits of the upper and lower D1 Sequence across the basin were derived from these fans that emanated from the southern Front Range. However, the finer-grained, middle portion of the D1 Sequence that spans the Cretaceous-Paleogene boundary was deposited by both transverse (proximal basin fill) and axial (distal basin fill) fluvial systems that exhibit contrasting provenance signatures. Although both tectonic and climatic controls likely influenced the stratigraphic development of the Denver Basin, the migration of locally derived fans toward and then away from the thrust front suggests that uplift of the southern Front Range may have peaked at approximately the Cretaceous-Paleogene boundary.
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Anderson, John B., Davin J. Wallace, Antonio B. Rodriguez, Alexander R. Simms, and Kristy T. Milliken. "Holocene Evolution of the Western Louisiana–Texas Coast, USA: Response to Sea-Level Rise and Climate Change." In Holocene Evolution of the Western Louisiana–Texas Coast, USA: Response to Sea-Level Rise and Climate Change. Geological Society of America, 2022. http://dx.doi.org/10.1130/2022.1221(01).

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ABSTRACT An extensive grid of high-resolution seismic data, hundreds of sediment cores, and a robust radiocarbon-age data set acquired over nearly four decades allows detailed analysis of Holocene coastal evolution of western Louisiana and Texas, USA. Results from this study provide a framework for assessing the response of a myriad of coastal environments to climate change and variable sea-level rise. Climate varies across the region today, spanning four climate zones from humid to semi-arid, and has fluctuated during the Holocene. The most notable changes were alterations between cool/ wet and warm/dry conditions. Sea-level records for the northwestern Gulf of Mexico indicate an average rate of rise during the early Holocene of 4.2 mm/yr, punctuated by rates exceeding 10.0 mm/yr. After ca. 7.0 ka, the rate of rise slowed, and by ca. 4.0 ka, the average rate decreased from 0.6 mm/yr to 0.3 mm/yr. The current rate of sea-level rise in the region is 3.0 mm/yr, marking a return to early Holocene conditions. Despite its incomplete stratigraphic record of coastal evolution during the middle and early Holocene, it is still the most complete record for the Gulf Coast. Bay evolution, as recorded within the offshore Trinity and Sabine incised valleys, was characterized by periods of bayhead delta and tidal delta expansion, followed by episodes of dramatic landward shifts in these environments. The ancestral Brazos, Colorado, and Rio Grande river deltas and coastal barriers also experienced landward stepping during the early Holocene. The widespread nature of these flooding events and their impact on multiple coastal environments suggests that they were caused by episodes of rapid sea-level rise. Similar methods were used to study modern bays, including the acquisition of seismic lines and drill cores along the axes of the bays to examine the magnitudes and timing of transgressive events. Results from Lake Calcasieu, Sabine Lake, Galveston Bay, Matagorda Bay, Copano Bay, Corpus Christi Bay, and Baffin Bay reveal that landward shifts in bayhead deltas, on the order of kilometers per century, occurred between 9.8 ka and 9.5 ka, 8.9–8.5 ka, 8.4–8.0 ka, and 7.9–7.5 ka. These results are consistent with those from offshore studies and indicate that punctuated sea-level rise dominated coastal evolution during the early Holocene. By ca. 7.0 ka, the average rate of sea-level rise in the northern Gulf of Mexico decreased to 1.4 mm/yr, and there was considerable sinuosity of the coastline and variability in the timing of bay and coastal barrier evolution. The diachronous nature of coastal environment migration across the region indicates that sea-level rise played a secondary role to climate-controlled oscillations in river sediment discharge to the coast. At ca. 4.0 ka, the average rate of sea-level rise decreased to 0.5 mm/yr. During this period of slow sea-level rise, coastal bays began to take on their current form, with the exception of changes in the sizes and locations of bayhead deltas caused by changes in sediment supply from rivers. There were also significant changes in the size and configuration of tidal inlets and deltas as a result of barrier growth. The late Holocene was also a time when coastal barriers experienced progradation and transgression on the order of several kilometers. The timing of these changes varied across the region, which is another indication that sea-level rise played a minor role in coastal change during the late Holocene. Instead, barrier evolution during this time was controlled by fluctuations in sand supply to the coast from rivers and offshore sources. Historical records indicate a dramatic reversal in coastal evolution marked by increased landward shoreline migration of chenier plains and coastal barriers across the region. The main cause of this change is accelerated sea-level rise during this century and diminished sediment supply to the coast. Wetlands are also experiencing rapid change due to their inability to keep pace with sea-level rise, especially in areas where subsidence rates are high. Although direct human influence is a factor in these changes, these impacts are more localized. Coastal change is expected to increase over the next several decades as the rate of sea-level rise increases, the climate in Texas becomes more arid, and more severe storms impact the coast.
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Conference papers on the topic "Drill core analysis"

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Gunther, Christian, Nils Jansson, Marcus Liwicki, and Foteini Simistira-Liwicki. "Towards a Machine Learning Framework for Drill Core Analysis." In 2021 Swedish Artificial Intelligence Society Workshop (SAIS). IEEE, 2021. http://dx.doi.org/10.1109/sais53221.2021.9484025.

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Contreras, Cecilia, Mahdi Khodadadzadeh, Laura Tusa, Pedram Ghamisi, and Richard Gloaguen. "A Machine Learning Technique for Drill Core Hyperspectral Data Analysis." In 2018 9th Workshop on Hyperspectral Image and Signal Processing: Evolution in Remote Sensing (WHISPERS). IEEE, 2018. http://dx.doi.org/10.1109/whispers.2018.8747022.

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HOCHENG, H., and C. C. TASO. "ANALYSIS OF DELAMINATION IN DRILLING COMPOSITE MATERIALS USING CORE DRILL." In Proceedings of the Third Australasian Congress on Applied Mechanics. WORLD SCIENTIFIC, 2002. http://dx.doi.org/10.1142/9789812777973_0046.

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Gradl, Christian, Alfred W. Eustes, and Gerhard Thonhauser. "An Analysis of Noise Characteristics of Drill Bits." In ASME 2008 27th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/omae2008-57620.

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There have been papers that analyze the relationship between bit design and a bit’s vibrational characteristics. These papers typically are based on the analysis of three-axis near-bit down-hole vibration sensors. In this paper, the authors take a simpler approach. Using a standard microphone literally pointed at the bit, they record the noise of the bit/rock interaction while drilling and analyze the resulting noise for these but vibrational characteristics. The data were gathered at the Colorado School of Mines in Golden, Colorado. The noise of a PDC core, roller cone, and diamond core bits
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Anzum, F., H. Hamdi, U. Alim, and M. Costa Sousa. "Exploring Convolutional Neural Networks and Machine Learning for Oil Sands Drill Core Image Analysis." In Third EAGE Digitalization Conference and Exhibition. European Association of Geoscientists & Engineers, 2023. http://dx.doi.org/10.3997/2214-4609.202332037.

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Wang, Dadong, Ryan Lagerstrom, Changming Sun, et al. "Automated vein detection for drill core analysis by fusion of hyperspectral and visible image data." In 2016 23rd International Conference on Mechatronics and Machine Vision in Practice (M2VIP). IEEE, 2016. http://dx.doi.org/10.1109/m2vip.2016.7827317.

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Katsui, Tokihiro, Tomoya Inoue, Kenta Izutani, Yuhi Nagaishi, Chang-Kyu Rheem, and Miki Y. Matsuo. "Considerations on Numerical Procedure for Stick-Slip Analysis of Drill String." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-62158.

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Stick-slip is one of the typical phenomenon which is observed in offshore drilling and considered as a critical problem for the drilling operation. The stick-slip makes a large fluctuation of drill bit rotation, even though the top of the drill pipe is rotating at a steady velocity and sometimes causes the damage of the drill bit. Additionally, it leads a crushing of the sediment layer which is a big problem especially for the scientific drilling [1][2][3]. The main purpose of the scientific drilling is to correct high quality core samples of sediment layers under the seabed. However, once the
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Channa, S., B. Bocaneala, H. Boro, and D. Whiteley. "Use of Drill Cuttings for Fracturing Geomechanics and Planning of Successful Operations." In SPE International Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2023. http://dx.doi.org/10.2118/215615-ms.

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Abstract In the challenging North Sea environment, as a result of the typically low number of wells, there is usually a single opportunity for executing a successful fracturing operation in a depleted well in a mature field. A thorough understanding of reservoir geomechanics becomes critical to candidate selection, particularly in cases where there is significant depletion in the reservoir zones underlying the target zones. Ordinarily, detailed core rock mechanics would be used to significantly reduce the uncertainties in the rock mechanics, and understanding of any barriers to fracture height
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Yang, Yongyong, Xiong Huang, Wei Wei, Yinyong Tao, Zhengquan Xie, and Guoyang Ma. "Simulation of MSLB+SBO Nuclear Accident Drill Sequence of 3rd-Generation Passive Nuclear Power Plant Based on Severe Accident Simulator." In 2022 29th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/icone29-90732.

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Abstract The full scope simulator (FSS) is very important for operator training, but the related SA training can’t be conducted for lack of the severe accident models, so it is urgent to expand the severe accident model on the FSS in nuclear power plant (NPP). The full scope simulator of 3rd-generation passive NPP can perform more abundant and complete accident scenes for operator training and accident drills through coupling MAAP5 models, namely severe accident simulator (SA simulator). In this paper, the severe models (such as core, primary system, containment), the key technologies of coupl
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Xie, Z. Harry, and Omar Reffell. "Unconventional Drill Cuttings Analysis Using 23 MHZ 2-D NMR T1-T2 Mapping Techniques." In 2022 SPWLA 63rd Annual Symposium. Society of Petrophysicists and Well Log Analysts, 2022. http://dx.doi.org/10.30632/spwla-2022-0065.

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Although the ultra-low permeability of unconventional tight rocks negatively influences production, such a petrophysical property leads to reduced probabilities that drilling cuttings are invaded by drilling fluids before drill cuttings are collected at wellsite. In this study, higher frequency (HF, 23MHz) NMR 2-D T1-T2 mapping techniques are used for the first time to study fresh drill cuttings to evaluate influences of the drilling mud, and changes of the liquids inside drill cuttings. Results are compared to that of core samples to ensure the validity of the drill cuttings analysis. Selecte
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Reports on the topic "Drill core analysis"

1

Ziada, H. H. ,. Westinghouse Hanford. Buckling and dynamic analysis of drill strings for core sampling. Office of Scientific and Technical Information (OSTI), 1996. http://dx.doi.org/10.2172/662035.

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Ziada, H. H. Stress analysis of jacks, frame and bearing connections, and drill rod for core sampler truck No. 2. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/33118.

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Sun, S., F. R. Brunton, T. R. Carter, et al. Porosity and permeability variations in the Silurian Lockport Group and A-1 carbonate unit, southwestern Ontario. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331902.

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This is the first regional porosity/permeability study to incorporate petroleum industry laboratory core analyses submitted to the Ontario government and managed by Ontario's Oil Gas and Salt Resources Library. This study comprises 11,759 analyses for the Early Silurian Lockport Group of southwestern Ontario from 150 drill cores. The Lockport Group consists of a cyclic succession of dolostones and minor limestones comprising, in ascending order: Gasport, Goat Island, Eramosa, and Guelph formations. This stacked carbonate succession was deposited on an eastward-deepening carbonate ramp, extendi
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Schmidt, V. Petrological/diagenetic study of Upper Cretaceous and Tertiary strata, Beaufort-Mackenzie Basin, Phase I: preliminary analysis and interpretation of samples from core, outcrop, and drill cuttings. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1987. http://dx.doi.org/10.4095/130292.

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Knight, R. D., and H. A. J. Russell. Quantifying the invisible: pXRF analyses of three boreholes, British Columbia and Ontario. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/331176.

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Portable X-ray fluorescence (pXRF) technology collects geochemical data at a fraction of the cost of traditional laboratory methods. Although the pXRF spectrometer provides concentrations for 41 elements, only a subset of these elements meet the criteria for definitive, quantitative, and qualitative data. However, high-quality pXRF data obtained by correct application of analytical protocols, can provide robust insight to stratigraphy and sediment characteristics that are often not observed by, for example, visual core logging, grain size analysis, and geophysical logging. We present examples
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Benn, D., R. Linnen, and T. Martins. Evaluating white mica as an indicator mineral for lithium bearing pegmatites, Wekusko Lake pegmatite field, Manitoba, Canada. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328982.

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This project investigates the potential use of white micas as an indicator mineral within Li-bearing pegmatites and the potential of field portable techniques, such as Raman spectroscopy and Laser Induced Breakdown Spectroscopy (LIBS) as real-time techniques in exploration. The pegmatites in the Wekusko Lake field, Manitoba, Canada, display five zones of varying mineralization. White micas display two textures in the field (primary igneous and secondary) and four textures were identified by backscattered electron imaging (poor zonation, rimmed, patchy and exsolution). The white micas were anal
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Dietiker, B., A. J.-M. Pugin, H. Crow, K. Brewer, and H. A. J. Russell. Geophysical data interpretation for the York University ATES site investigation, Ontario. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332366.

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Aquifer Thermal Energy Storage (ATES) systems have the potential of reducing heating and cooling energy consumption at institutional and commercial scales. ATES systems are popular in Europe, particularly in areas of extensive glacial and post glacial unconsolidated sediment. Southern Ontario shares numerous similarities with such settings. To support an ATES study at York University, Toronto, Ontario, three geophysical datasets were collected i) Microtremor analysis (the horizontal-to-vertical spectral ratio technique, HVSR), ii) seismic reflection, and iii) borehole geophysics. The three tec
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Schetselaar, E. M., G. Bellefleur, and P. Hunt. Integrated analyses of density, P-wave velocity, lithogeochemistry, and mineralogy to investigate effects of hydrothermal alteration and metamorphism on seismic reflectivity: a summary of results from the Lalor volcanogenic massive-sulfide deposit, Snow Lake, Manitoba. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/327999.

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We present herein a summary of integrated data analyses aimed at investigating the effects of hydrothermal alteration on seismic reflectivity in the footwall of the Lalor volcanogenic massive-sulfide (VMS) deposit, Manitoba. Multivariate analyses of seismic rock properties, lithofacies, and hydrothermal alteration indices show an increase in P-wave velocity for altered volcanic and volcaniclastic lithofacies with respect to their least-altered equivalents. Scanning electron microscopy-energy dispersive X-ray spectrometry analyses of drill-core samples suggest that this P-wave velocity increase
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Ningthoujam, J., J. K. Clark, T. R. Carter, and H. A. J. Russell. Investigating borehole-density, sonic, and neutron logs for mapping regional porosity variation in the Silurian Lockport Group and Salina Group A-1 Carbonate Unit, Ontario. Natural Resources Canada/CMSS/Information Management, 2024. http://dx.doi.org/10.4095/332336.

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The Oil, Gas and Salt Resources Library (OGSRL) is a repository for data from wells licenced under the Oil, Gas and Salt Resources Act for Ontario. It has approximately 50,000 porosity and permeability drill core analyses on bedrock cores. It also has in analogue format, geophysical logs (e.g., gamma ray, gamma-gamma density, neutron, sonic) from approximately 20,000 wells. A significant challenge for geotechnical and hydrogeological studies of the region is the accessibility of digital data on porosity and permeability. Recent work completed on approximately 12,000 core analyses for the Silur
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Tóth, Z., B. Dubé, B. Lafrance, V. Bécu, K. Lauzière, and P. Mercier-Langevin. Whole-rock lithogeochemistry of the banded iron-formation-hosted gold mineralization in the Geraldton area, northwestern Ontario. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331919.

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This report releases 235 runs of whole-rock geochemical and assay results of 235 samples/subsamples from the Archean banded iron formation-hosted gold mineralization in the Geraldton area, eastern Wabigoon subprovince, northwestern Ontario. The samples were collected during the 2012, 2013, 2014 and 2016 field seasons as part of a PhD study by the senior author (T�th, 2018) at Laurentian University in Sudbury. Geochemical analyses were paid in part by the GSC for the 2012, 2013 samples, while the 2014 and 2016 samples were graciously paid by the second author, Bruno Lafrance and Greenstone Gold
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