Bibliographies thématiques / Geochemical studies

Sommaire

  1. Articles de revues
  2. Thèses
  3. Livres
  4. Chapitres de livres
  5. Actes de conférences
  6. Rapports d'organisations

Littérature scientifique sur le sujet « Geochemical studies »

Auteur : Grafiati
Publié le 6 septembre 2023

Créez une référence correcte selon les styles APA, MLA, Chicago, Harvard et plusieurs autres

Choisissez une source :

Consultez les listes thématiques d’articles de revues, de livres, de thèses, de rapports de conférences et d’autres sources académiques sur le sujet « Geochemical studies ».

À côté de chaque source dans la liste de références il y a un bouton « Ajouter à la bibliographie ». Cliquez sur ce bouton, et nous générerons automatiquement la référence bibliographique pour la source choisie selon votre style de citation préféré : APA, MLA, Harvard, Vancouver, Chicago, etc.

Vous pouvez aussi télécharger le texte intégral de la publication scolaire au format pdf et consulter son résumé en ligne lorsque ces informations sont inclues dans les métadonnées.

Articles de revues sur le sujet "Geochemical studies"

1

Demetriades, A., M. Birke, J. Locutura, A. B. Bel-lan, M. Duris et EuroGeoSurveys Geochemistry Expert Group EuroGeoSurveys Geochemistry Expert Group. « URBAN GEOCHEMICAL STUDIES IN EUROPE ». Bulletin of the Geological Society of Greece 43, no 5 (31 juillet 2017) : 2338. http://dx.doi.org/10.12681/bgsg.11634.

Texte intégral
Résumé :
Urban soil is generally contaminated to a variable degree depending on its proximity to contamination sources. Traffic is one of the main sources of urban contamination; lead (Pb) from the use of leaded petrol, zinc (Zn) and cadmium (Cd) from tyre wear, antimony (Sb) from break pads, and the platinum group Nelements (PGEs) from the wear of catalytic converters, are some typical elements that often reach high concentrations in the urban environment. Lead was also a key ingredient in white paint, and in towns with a high proportion of white wooden houses very high concentrations were found in soil. Crematoria can or have emitted mercury (Hg). Coal and heavy oil fired municipal power and heating stations emit sulphur (S), silver (Ag), vanadium (V), bromine (Br) and barium (Ba). The use of impregnated wood may have resulted in high concentrations of arsenic (As), especially in kindergartens (nursery schools) and playgrounds. Building materials (plaster and paint) may also contain high concentrations of organic contaminants, especially polychlorinated biphenyls (PCBs), which again end up in urban soil. Coal and wood burning, the use of diesel fuel, and the production of coke, all lead to the emission of polycyclic aromatic hydrocarbons (PAHs). There exist countless other sources of local contamination in towns, and there is thus every reason to be concerned about the quality of the urban environment, and the suitability of soil for sensitive land uses, such as schools, playgrounds, parks and vegetable gardens. Contaminated urban soil may contaminate indoor dust and, therefore, to an increased human exposure to toxic chemicals. Consequently, the distribution of toxic contaminants in urban soil needs to be documented and known by city administration to avoid costly mistakes in land use planning, and further spreading of highly contaminated materials. The EuroGeoSurveys ‘Geochemistry’ Expert Group during the compilation of a proposal to the Directors for a European wide urban geochemistry project, using a harmonised sampling and analytical methodology, it discovered that many urban geochemical studies have been performed in Europe by National Geological Surveys, which are not known to the wider geoscientific community. Since, the results of these studies are directly related to our quality of life, the EuroGeoSurveys ‘Geo-chemistry’ Expert Group decided to publish at least one case study from each country in a book,which will be available in the second half of 2010. A concise description of some of these studies will be given in this paper.
Styles APA, Harvard, Vancouver, ISO, etc.
2

Church, M. R. « Geochemical studies in watersheds expanded ». Eos, Transactions American Geophysical Union 72, no 21 (1991) : 237. http://dx.doi.org/10.1029/90eo00184.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Alekseenko, Vladimir, Natalya Shvydkaya, Alexander Puzanov et Aleksey Nastavkin. « Landscape monitoring studies of the North Caucasian geochemical province ». Journal of Mining Institute 243 (10 juin 2020) : 371. http://dx.doi.org/10.31897/pmi.2020.3.371.

Texte intégral
Résumé :
The data on the geochemical features of the bedrocks and soils of the province are given. Considerable attention is paid to regional abundances, as well as enrichment and dispersion factors of the chemical elements in landscapes. Using the example of the North Caucasus, it is shown that for such indicators as phytomass, geological, geomorphological, and geobotanical features, it is possible to make a preliminary outlining of regional structures corresponding to geochemical provinces. At the same time, a subsequent geochemical study of these structures remains mandatory. Upon determining certain geochemical associations, geochemical provinces can be basically distinguished; to a large extent, geochemical properties of these accumulated and scattered associations of elements contribute to the regional soil geochemistry. The results of long-term monitoring studies of the North Caucasus geochemical province have shown that the key features of the regional landscapes are due to the composition of bedrock and the presence of a large number of ore deposits and occurrences. The data obtained are the basis for assessing the state of the environment in conditions of increasing anthropogenic impact, and the established regional abundances can be used to assess the degree of pollution in agricultural, residential, and mining landscapes.
Styles APA, Harvard, Vancouver, ISO, etc.
4

Lodha, G. S., K. J. S. Sawhney, H. Razdan, D. P. Agrawal et N. Juyal. « Geochemical studies on Kashmir loess profiles ». Journal of Earth System Science 96, no 2 (septembre 1987) : 135–45. http://dx.doi.org/10.1007/bf02839265.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Carranza, Emmanuel John M. « Geochemical sampling for geological–environmental studies ». Journal of Geochemical Exploration 111, no 3 (décembre 2011) : 57–58. http://dx.doi.org/10.1016/j.gexplo.2011.09.010.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

G. Sakram, G. Sakram, G. Chandra Mouli, Sripada Narala, Soujanya Soujanya et Praveen Raj Saxena. « Hydro Geochemical Studies in Nagavali Micro Watershed, Vizianagaram District, Andhra Pradesh, India ». Indian Journal of Applied Research 4, no 8 (1 octobre 2011) : 282–88. http://dx.doi.org/10.15373/2249555x/august2014/72.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

René, Milos. « Provenance studies of Moldanubian paragneisses based on geochemical data (Bohemian Massif, Czech Republic) ». Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 242, no 1 (11 janvier 2006) : 83–101. http://dx.doi.org/10.1127/njgpa/242/2006/83.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Troll, Georg, Elmar Linhardt et Rainer Skeries. « Petrographic and geochemical studies on country rock of the Bodenmais (Bavaria) sulphide deposit ». Neues Jahrbuch für Geologie und Paläontologie - Monatshefte 1987, no 12 (1 décembre 1987) : 726–52. http://dx.doi.org/10.1127/njgpm/1987/1987/726.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

Ram Mohan, M., D. Srinivasa Sarma, Tarun C. Khanna, M. Satyanarayanan et A. Keshav Krishna. « Geochemical Studies in India : CSIR-NGRI Contributions ». Journal of the Geological Society of India 97, no 10 (octobre 2021) : 1240–50. http://dx.doi.org/10.1007/s12594-021-1853-5.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Lee, Yung-Tan, Ju-Chin Chen, Kung-Suan Ho et Wen-Shing Juang. « Geochemical studies of tektites from East Asia ». GEOCHEMICAL JOURNAL 38, no 1 (2004) : 1–17. http://dx.doi.org/10.2343/geochemj.38.1.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Plus de sources

Thèses sur le sujet "Geochemical studies"

1

Das, Nachiketa. « Geochemical studies of Caithness flags ». Thesis, University of Glasgow, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.277227.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Zeng, Yi-dong B. « Geochemical studies of microbial lipids ». Thesis, University of Bristol, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235488.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Mavrogenes, John Ashby. « Geochemical studies of earth materials ». Diss., Virginia Tech, 1994. http://hdl.handle.net/10919/37460.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Bray, Ian Stephen Johnson. « Geochemical methods for provenance studies of steatite ». Thesis, University of Glasgow, 1994. http://theses.gla.ac.uk/2735/.

Texte intégral
Résumé :
The aim of archaeology is the reconstruction of past cultures and the processes behind cultures. Conclusive evidence of cultural contacts between distinct groups of peoples is of great importance. It has long been realised that the study of the raw materials utilised for artifacts that were then moved far from their place of origin is vital in identifying these contacts and this study is concerned with the investigation of one such material - steatite. Steatite is a soft talcose rock that is easily carved even with stone, bone or metal tools. It also has a low coefficient of thermal expansion. These physical properties have resulted in steatite being used as a raw material for the production of many domestic and decorative items throughout the world from prehistoric times until the present. However, the geological formation process has only occurred in a limited number of locations, and hence steatite sources have a relatively restricted geographical distribution. Thus steatite can be seen to fulfil a number of the basic requirements for provenancing, namely limited geographical distribution and extensive utilisation in the past. As a lithic material the physical production techniques do not affect the physical and chemical nature of the material, which may be a considerable problem with characterisation of other archaeological material, eg. ceramics, metal and glass. Thus by characterisation of source material, steatite artifacts of unknown provenance may be compared and their ultimate origin established. However, the formation of steatite is a complex process that often results in a source body that is inhomogeneous, making simple characterisation techniques inadequate. This study seeks to establish differences between source regions and between individual quarries. If a unique pattern in measurable properties can be established, by comparing artifacts to sources, their origin may be established.
Styles APA, Harvard, Vancouver, ISO, etc.
5

Jones, D. M. « Biodegradation of geochemical markers in pollution studies ». Thesis, University of Newcastle Upon Tyne, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371787.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Yendle, Peter W. « Chemometric studies of biochemical and geochemical systems ». Thesis, University of Bristol, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.232950.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

Elliot, Trevor. « Geochemical indicators of groundwater ageing ». Thesis, University of Bath, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278513.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Feltham, David John. « Trace element studies by proton microprobe analysis ». Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.258766.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

Elvy, Shane Brett, University of Western Sydney, Faculty of Science and Technology et School of Science. « Geochemical studies of base and noble metal compounds ». THESIS_FST_SS_Elvy_S.xml, 1998. http://handle.uws.edu.au:8081/1959.7/821.

Texte intégral
Résumé :
The research in this study consisted of two strands. The first consists of noble metal geochemical studies and the second involves base metal supergene processes. The precious metal geochemistry carried out in the scope of this thesis involves palladium and tellurium geochemistry, surface chemistry studies of palladium-bismuth- and tellarium-bearing synthetic minerals, and electrochemical determinations of the inactivity of a variety of primary telluride minerals and alloys. Two new minerals have been found in deposits near Broken Hill, N.S.W. The second section of the research concerns itself with supergene processes in two copper-bearing orebodies. This was carried out by designing a method utilising solution equilibria to predict whether secondary mineral species are precipitating or dissolving in the supergene zones of the Girilambone, N.S.W. and North Mungana, Qld. orebodies. Results found could be used to develop new geochemical prospecting methods in the regions discussed.
Doctor of Philosophy (PhD)
Styles APA, Harvard, Vancouver, ISO, etc.
10

Elvy, Shane Brett. « Geochemical studies of base and noble metal compounds / ». View thesis, 1998. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030821.172648/index.html.

Texte intégral
Résumé :
Thesis (Ph.D.) -- University of Western Sydney, Nepean, 1998.
CD-ROM (appendix) contains complete lists of the species distribution for each water sample; the constant correction spreadsheet; and, the possible stability constants for aqueous ionic species as well as the data ranges for both the Girilambone study and the North Mungana study. A thesis presented in accordance with the regulations governing the award of the degree of Doctor of Philosophy in the University of Western Sydney, Nepean, School of Science. Includes bibliographical references at end of each chapter.
Styles APA, Harvard, Vancouver, ISO, etc.
Plus de sources

Livres sur le sujet "Geochemical studies"

1

P, Gough L., Asher-Bolinder Sigrid, Bales Carole A, Runberg Sonja K et Wells Robert K, dir. Understanding our fragile environment : Lessons from geochemical studies. [Washington, D.C.] : U.S. G.P.O., 1993.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Tamish, Mohamed. Geomathematical and geochemical studies on Egyptian phosphorite deposits. Berlin : D. Reimer, 1988.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Geological Survey (U.S.), dir. Geochemical studies in the Coconino National Forest, Arizona. [Reston, Va.?] : Dept. of the Interior, U.S. Geological Survey, 1995.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Baskaran, Mark. Radon : A Tracer for Geological, Geophysical and Geochemical Studies. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21329-3.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

A, Daws Ted, Bostick N. H, Bethke Philip Martin 1930-, Geological Survey (U.S.) et U.S. Continental Scientific Drilling Program, dir. Organic geochemical studies to understand ore genesis at Creede. [Denver, Colo.] : U.S. Dept. of the Interior, U.S. Geological Survey, 2001.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Yŏnʼguso, Hanʼguk Tongnyŏk Chawŏn, dir. Kwangyŏk tʻamsa yŏnʼgu = : Studies for the exploration of mineral deposits. Sŏul Tʻŭkpyŏlsi : Hanʼguk Tongnyŏk Chawŏn Yŏnʼguso, 1989.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

Evans, James George. Geochemical studies in the Stensgar Mountain quadrangle, Stevens County, Washington. [Denver, Colo.?] : Dept. of the Interior, U.S. Geological Survey, 1988.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Evans, James George. Geochemical studies in the Stensgar Mountain quadrangle, Stevens County, Washington. [Denver, Colo.?] : Dept. of the Interior, U.S. Geological Survey, 1988.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

J, Goldfarb R., Nash J. Thomas 1941- et Stoeser J. W, dir. Geochemical studies in Alaska by the U.S. Geological Survey, 1989. [Washington, D.C.] : U.S. G.P.O., 1990.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Evans, James George. Geochemical studies in the Stensgar Mountain quadrangle, Stevens County, Washington. [Denver, Colo.?] : Dept. of the Interior, U.S. Geological Survey, 1988.

Trouver le texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Plus de sources

Chapitres de livres sur le sujet "Geochemical studies"

1

Zhu, Chen. « Geochemical Modeling geochemical modeling/models in Environmental and Geological Studies ». Dans Encyclopedia of Sustainability Science and Technology, 4094–104. New York, NY : Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4419-0851-3_202.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Schuiling, R. D. « Geochemical Engineering : Principles and Case Studies ». Dans Geochemical Approaches to Environmental Engineering of Metals, 3–12. Berlin, Heidelberg : Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/978-3-642-79525-1_1.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Yeh, Gour-Tsyh, et Hwai-Ping Cheng. « On Diagonalization of Coupled Hydrologic Transport and Geochemical Reaction Equations ». Dans Environmental Studies, 373–98. New York, NY : Springer New York, 1996. http://dx.doi.org/10.1007/978-1-4613-8492-2_19.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Michaelis, W., H. H. Richnow, A. Jenisch, T. Schulze et B. Mycke. « Structural Inferences from Organic Geochemical Coal Studies ». Dans Facets of Modern Biogeochemistry, 388–401. Berlin, Heidelberg : Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-73978-1_29.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Zhu, Chen. « Geochemical Modeling in Environmental and Geological Studies ». Dans Environmental Geology, 209–18. New York, NY : Springer US, 2012. http://dx.doi.org/10.1007/978-1-4939-8787-0_202.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Gearing, J. N., et R. Pocklington. « Organic geochemical studies in the St. Lawrence Estuary ». Dans Coastal and Estuarine Studies, 170–201. Washington, D. C. : American Geophysical Union, 1990. http://dx.doi.org/10.1029/ce039p0170.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
7

Baskaran, Mark. « Radon : A Tracer for Geochemical Exploration ». Dans Radon : A Tracer for Geological, Geophysical and Geochemical Studies, 189–204. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21329-3_9.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Muñoz-Espadas, María-Jesús, Jesús Martínez-Frías et Rosario Lunar. « Main Geochemical Signatures Related to Meteoritic Impacts in Terrestrial Rocks : A Review ». Dans Impact Studies, 65–90. Berlin, Heidelberg : Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-642-55463-6_3.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

Yamamoto, Masayoshi, Kazuhisa Komura et Masanobu Sakanoue. « Geochemical Studies on Americium and Plutonium in Soil ». Dans Americium and Curium Chemistry and Technology, 275–92. Dordrecht : Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5444-1_21.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Wolfsberg, Max, W. Alexander Van Hook et Piotr Paneth. « Isotope Effects in Nature : Geochemical and Environmental Studies ». Dans Isotope Effects, 289–311. Dordrecht : Springer Netherlands, 2009. http://dx.doi.org/10.1007/978-90-481-2265-3_9.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.

Actes de conférences sur le sujet "Geochemical studies"

1

Hanley, Jennifer. « SPECTRAL, GEOCHEMICAL, AND GEOPHYSICAL LABORATORY STUDIES RELEVANT TO PLANETARY GEOLOGY ». Dans GSA Annual Meeting in Seattle, Washington, USA - 2017. Geological Society of America, 2017. http://dx.doi.org/10.1130/abs/2017am-303996.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Tsiupa, I., K. Bondar et O. Kozionova. « Urban soil pollution in Kyiv determined from magnetic and geochemical studies ». Dans 15th International Conference Monitoring of Geological Processes and Ecological Condition of the Environment. European Association of Geoscientists & Engineers, 2021. http://dx.doi.org/10.3997/2214-4609.20215k2100.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

Nguyen, Philip Duke, Jim Dean Weaver et Richard Dale Rickman. « Prevention of Geochemical Scaling in Hydraulically Created Fractures : Laboratory and Field Studies ». Dans SPE Eastern Regional/AAPG Eastern Section Joint Meeting. Society of Petroleum Engineers, 2008. http://dx.doi.org/10.2118/118175-ms.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Daryabandeh, M., et F. Tezheh. « Geochemical Source Rocks Evaluation and Hydrocarbons Studies in North of Dezful Embayment ». Dans Saint Petersburg 2012. Netherlands : EAGE Publications BV, 2012. http://dx.doi.org/10.3997/2214-4609.20143652.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Rezouga, Nawel, Anis Belhaj Mohamed, Moncef Saidi et Ibrahim Bouazizi. « Geochemical Correlation And Migration Studies Of The South Eastern Part Of Tunisia ». Dans North Africa Technical Conference and Exhibition. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/150832-ms.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Dilshan, RADP, A. Sageenthan, NGN Weerangana, HMR Premasiri, Ratnayake NP, AMKB Abeysinghe, NP Dushyantha, NM Batapola et RMP Dilshara. « Geochemical Distribution of Selected Elements in Serpentinite Deposit in Ginigalpelessa, Sri Lanka ». Dans International Symposium on Earth Resources Management & Environment. Department of Earth Resources Engineering, University of Moratuwa, Sri Lanka, 2022. http://dx.doi.org/10.31705/iserme.2022.6.

Texte intégral
Résumé :
Serpentinite deposits are well known for their natural enrichments of heavy metals (Ni, Cr, Co) and depletions of macro nutrients (Ca, Mg), which have caused different ecological and health impacts in the surrounding areas. In addition, they are considered as potential sources for rare earth elements (REEs). While Ginigalpelessa, the largest serpentinite deposit in Sri Lanka, has been the focus of several toxicological studies, to date, there have been no significant studies related to geochemical distribution of heavy metals, macro nutrients, and REEs in the deposit. Therefore, the present study is focused on the assessment of geochemical distribution of selected elements (Ni, Cr, Co, Ca, Mg, and REEs) in the deposit. Accordingly, concentrations of these elements in 30 rock and soil samples were analyzed and their geochemical distributions were studied using the results of the present study and literature. Ni (6629 ppm) and Cr (35875 ppm) showed the highest enrichments in the deposit, whereas all the studied heavy metals have exceeded the permissible levels of the World Health Organization. In addition, a low Ca/Mg ratio was observed in the deposit, which explains the inhibition of plant growth in the deposit. Moreover, the identified areas with high enrichments of Ni, Cr, and Co using the prepared geochemical distribution maps will be useful in the spot remediation for toxicity in the deposit. Since serpentine soil is recognized as a low-grade source for Ni, low-grade extraction techniques such as phytomining and bioleaching are recommended to extract valuable metals from the Ginigalpelessa deposit.
Styles APA, Harvard, Vancouver, ISO, etc.
7

Ge, Shuangyu, Malcolm Kintzing, Muqing Jin, Jiang Wu, Jana Bachleda et Faye Liu. « Time-Lapse Monitoring of Inter-Well Communication and Drainage Frac Height Using Geochemical Fingerprinting Technology with Case Studies in the Midland Basin ». Dans SPE Hydraulic Fracturing Technology Conference and Exhibition. SPE, 2022. http://dx.doi.org/10.2118/209145-ms.

Texte intégral
Résumé :
Abstract In this study, we present a method to monitor inter-well communication and drainage frac height through time based on unique geochemical fingerprint data collected from oils. This method does not require expensive instruments or interfere with production and its results were integrated with independent pressure gauge and well performance data to enable data-driven decisions on well spacing, well stacking and completion designs with different subsurface configurations. Produced oils of 9 horizontal wells over ~20 months and cuttings samples from the vertical section of an adjacent well were collected in the study area located in Midland Basin, Texas. The 9 producing wells were in two DSUs with two different well configurations, one drilled with two landing targets while the other with three. Thousands of chemical compounds that are naturally occurring in the produced oils and oils extracted from the cuttings, were profiled and interpreted geochemically. Drainage frac heights and quantitative production allocation by zone were conducted by building a geochemistry-based model correlating the produced oils back to their contributing intervals represented by the cuttings samples and their vertical depths. The probability of inter-well fluid communication between each of the well pairs was calculated based on the similarity of the geochemical fingerprints in the produced oils of the corresponding wells. Our data showed that the three targets scenario generated significantly more overlapped drainage vertically and vertical well communication than the two targets scenario. Up to ~60% of the drainage frac height of the Middle well in the three targets scenario overlapped with the Upper wells and ~20% overlapped with the Lower wells, while in the two targets scenario the Upper and Lower wells only showed ~40% overlapped vertical drainage. The lateral geochemical similarity index (SIL) calculation showed correlation between higher SIL (stronger lateral well communication) and poorer oil production rates, indicating well communication could impair well performance. The data also showed significant variation of lateral communication through time which was strongest about a month into production and then reduced through time. Even with the same spacing and completion design, the Upper wells showed higher SIL (i.e., more communication) than the Lower wells, indicating geology and completion design parameters such as sand and fluid volume, and clusters should be taken into consideration for future planning. Independent pressure data also supported these observations, providing critical evidence for optimizing the stacking, spacing, and completion designs of future development wells. Geochemical data in the produced oils carry significant information to reveal subsurface fluid flow and well interaction through time. It provides actionable data to support various field development decisions such as well spacing, well stacking, landing target optimization, well sequencing, and completion designs.
Styles APA, Harvard, Vancouver, ISO, etc.
8

A. Jalil, Mohd Azran, Sharidah M. Amin et Siti Syareena M. Ali. « Integrated CO2 Modeling Studies to Assess CO2 Sequestration Prospect in a Depleted Carbonate Gas Reservoir, Malaysia ». Dans SPE Middle East Oil & Gas Show and Conference. SPE, 2021. http://dx.doi.org/10.2118/204810-ms.

Texte intégral
Résumé :
Abstract This paper presented an integrated CO2 injection and sequestration modelling study performed on a depleted carbonate gas reservoir, which has been identified as one of potential CO2 sequestration site candidate in conjunction with nearby high CO2 gas fields development and commercialization effort to monetize the fields. 3D compositional modelling, geomechanical and geochemical assessment were conducted to strategize optimum subsurface CO2 injection and sequestration development concept for project execution. Available history matched black oil simulation model was converted into compositional model. Sensitivity analyses on optimum injection rate, number and types of injectors, solubility of CO2 in water, injection locations and impact of hysteresis to plume distribution were investigated. Different types of CO2 trapping mechanisms including hydrodynamic, residual/capillary, solubility and mineral trapping were studied in detailed. Coupled modelling study was performed on base case scenario to assess geomechnical and geochemical risks associated with CO2 injection and sequestration process before-, during- and post- CO2 injection operation to provide assurance for a safe and long-term CO2 sequestration in the field. Available history matched black oil model was successfully converted into compositional model, in which CO2 is treated and can be tracked as a separate component in the reservoir throughout the production and injection processes. Integrating all the results obtained from sensitivities analyses, the proposed optimum subsurface CO2 injection and sequestration development concept for the field is to inject up to 400 MMscf/D of CO2 rate via four injectors. CO2 injection rate is forecasted to sustain more than 3 years from injection start date before declining with time. In terms of CO2 storage capacity, constraining injection pressure up to initial reservoir pressure, maximum CO2 storage capacity is estimated ~65 Million tonnes. Nevertheless, considering maximum allowable CO2 injection pressure estimated from coupled modelling study and operational safety factor, the field is capable to accommodate a total of ~77 Million tonnes of CO2, whereby 73% of total CO2 injected will exists in mobile phase and trapped underneath caprock whilst the other 24% and 3% will be trapped as residual/capillary and dissolved in water respectively. Changes of minerals and porosity were observed from 3D geochemical modelling, however, changes are negligible due to the fact that geochemical reaction is a very slow process. This paper highlights and shares simulation results obtained from CO2 injection and sequestration studies performed on 3D compositional model to generate an optimum subsurface CO2 injection and sequestration development concept for project execution in future. Integration with geomechanical and geochemical modelling studies are crucial to assess site's capability to accommodate CO2 within the geological formation and provide assurance for a safe and long-term CO2 sequestration.
Styles APA, Harvard, Vancouver, ISO, etc.
9

Fan, Rong, et Yoshito Chikaraishi. « Fractionation of 15N/14N in Plant Phenology : Implications for Physiological, Ecological, and Geochemical Studies ». Dans Goldschmidt2020. Geochemical Society, 2020. http://dx.doi.org/10.46427/gold2020.682.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Versteeg, Roelof, Lex van Geen, Mike Steckler, Martin Stute, Yan Zheng, Steve Goodbred, Gail Heath et Kazi Matin Ahmed. « 3D Mapping of Geology and Arsenic Using Integrated Geophysical and Geochemical Studies in Bangladesh ». Dans Symposium on the Application of Geophysics to Engineering and Environmental Problems 2003. Environment and Engineering Geophysical Society, 2003. http://dx.doi.org/10.4133/1.2923167.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.

Rapports d'organisations sur le sujet "Geochemical studies"

1

King, R. D., S. J. Piercey et R. C. Paulen. Geochemical studies of base metal indicator minerals. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2019. http://dx.doi.org/10.4095/313425.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
2

Macko, S. J., M. P. Segall et C. P. G. Pereira. Geochemical and Mineralogical Studies in the Arctic Archipelago. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/130102.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
3

J.T. Birkholzer, J. Rutqvist, E.L. Sonnenthal, D. Barr, M.Chijimatsu, O. Kolditz, Q. Liu et al. Geomechanical/ Geochemical Modeling Studies onducted Within the International DECOVALEX Project. Office of Scientific and Technical Information (OSTI), février 2006. http://dx.doi.org/10.2172/893929.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
4

Percival, J. B., A. Mudroch, G. E. M. Hall et C. E. Dunn. Geochemical studies in the Howe Sound drainage basin, British Columbia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/132781.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
5

Diakow, L. J., et J. M. Newell. Interior Plateau Geoscience Project : summary of geological, geochemical and geophysical studies. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1997. http://dx.doi.org/10.4095/208972.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
6

Perkey, David W., Anthony M. Priestas, Jeffrey M. Corbino, Gary L. Brown, Michael A. Hartman, Danielle R. N. Tarpley et Loung Phu V. Sediment Provenance Studies of the Calcasieu Ship Channel, Louisiana : A Synopsis Report. U.S. Army Engineer Research and Development Center, juillet 2022. http://dx.doi.org/10.21079/11681/44905.

Texte intégral
Résumé :
To maintain the navigability of the Calcasieu Ship Channel (CSC), the US Army Corps of Engineers annually dredges millions of cubic yards of sediment from the inland channel. To assess sources of channel shoaling, a previous study examined river and bankline erosion as inputs. Results from that study accounted for approximately 20% of dredged volumes. Through the support of the Regional Sediment Management Program, a follow-up investigation reviewed prior sediment budgets, identified potential missing sediment sources, modeled potential sediment pathways, and utilized geochemical fingerprinting to discern primary shoaling sources to the channel. The missing sediment sources from the original budget include coastally derived sediment from the Gulf of Mexico and terrestrially derived sediment from Lake Calcasieu and surrounding wetlands. Results from geochemical fingerprinting of various potential sediment sources indicate the Calcasieu River and the Gulf of Mexico are primary contributors of sediment to the CSC, and sediments sourced from bankline erosion, Lake Calcasieu bed, and interior wetlands are secondary in nature. These results suggest that engineering solutions to control shoaling in the CSC should be focused on sources originating from the Gulf of Mexico and river headwaters as opposed to Lake Calcasieu, channel banklines, and surrounding wetlands.
Styles APA, Harvard, Vancouver, ISO, etc.
7

Thompson, Geoffrey, et Katheryn M. Gillis. Processes of Crack-Filling in the Shallow Oceanic Crust : Constraints from Mineralogical and Geochemical Studies. Fort Belvoir, VA : Defense Technical Information Center, janvier 1997. http://dx.doi.org/10.21236/ada326940.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
8

Wadman, Heidi, David Perkey, Jennifer Seiter, Mark Chappell et Brandon Lafferty. A guide for using geochemical methods in dredged material, sediment tracking, and sediment budget studies. Engineer Research and Development Center (U.S.), juin 2017. http://dx.doi.org/10.21079/11681/22663.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
9

Yeo, G. M., W. D. Kalkreuth, G. Dolby et J. C. White. Preliminary report on petrographic, palynological, and geochemical studies of coals from the Pictou coalfield, Nova Scotia. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1988. http://dx.doi.org/10.4095/122419.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
10

Gillis, K. M., et P. T. Robinson. Alteration of the Icrdg Cy - 1 and Cy - 1a Drill Cores, Troodos Ophiolite : Mineralogical and Geochemical Studies. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/133532.

Texte intégral
Styles APA, Harvard, Vancouver, ISO, etc.
Vous pouvez également être intéressé par les bibliographies sur le sujet « Geochemical studies » pour d’autres types de sources :
Articles de revues Thèses Livres
Nous offrons des réductions sur tous les plans premium pour les auteurs dont les œuvres sont incluses dans des sélections littéraires thématiques. Contactez-nous pour obtenir un code promo unique!

Vers la bibliographie