Results 91 to 100 of about 12,814 (219)

Shale problems and water-based drilling fluid optimisation in the Hassi Messaoud Algerian oil field [PDF]

open access: yes, 2010
Drilling fluid formulation and properties play a fundamental role in drilling operations. Clay minerals behave initially as a beneficial rheological adjuvant in drilling muds.
Benmounah, Abdelbaki   +6 more
core   +2 more sources

An evaluation of the permeability obtained from the gas-hydrodynamic studies of the wells of the Turonian deposit at the Yuzhno-Russkoye field

open access: yesИзвестия высших учебных заведений: Нефть и газ
This article is devoted to a qualitative and quantitative evaluation of the permeability values obtained during gas-hydrodynamic well tests with observation well testing in the Turonian deposits of the Yuzhno-Russkoye field.
I. A. Vyatkin, S. A. Podmogilnyj
doaj   +1 more source

Upper ocean oxygenation dynamics from I/Ca ratios during the Cenomanian-Turonian OAE 2 [PDF]

open access: yes, 2015
Author Posting. © American Geophysical Union, 2015. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution.
Adams   +108 more
core   +3 more sources

Biostratigraphy of Abderaz Formation based on calcareous nannofossils in eastern Kopet-Dagh (Ghareh-Soo Section) [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2016
Abderaz Formation is studied along Ghareh-Soo stratigraphic section, in eastern part of Kopet-dagh Sedimentary Basin which measures 958 meters in thickness. Nannofossil bioevents have been utilized to biostratigraphically classify the exposed sedimentary
Nasim Mousavi   +2 more
doaj  

The study of the umbilical system in planktonic foraminifera in relation with depth of the Ziarat-kola section at the Maastrichtian, Central Alborz, IRAN [PDF]

open access: yes, 2009
The main aim of this research is study of the planktonic foraminifera morphogroups distinction genus to perform by changing the umbilicus area in Ziarat-kola section to find novel results.
Behnaz Balmaki   +2 more
core   +1 more source

The global bio-events at the Cenomanian-Turonian transition in the reduced Bahloul Formation of Bou Ghanem (central Tunisia) [PDF]

open access: yes, 2010
In central Tunisia, the thickness of the Bahloul Formation varies generally between 20 to 40 m such as for example, respectively, at wadi Smara near Kalaat Senan and at wadi Bahloul near Maktar.
Amédro, Francis   +3 more
core   +3 more sources

Intra-Turonian stratigraphic reorganization on the Arabian Plate

open access: yesGeological Society, London, Special Publications
Shallow-marine carbonate deposition was widespread across the Arabian Plate during much of the Late Permian–Mesozoic but was significantly interrupted by a major tectonically driven stratigraphic reorganization that took place within the Turonian. Published literature terms this the ‘Wasia–Aruma Break’, the ‘mid-Turonian Unconformity’, or the ‘K150 ...
Michael D. Simmons   +6 more
openaire   +1 more source

Les ostracodes de l'Albien-Turonien moyen de la région d'Antsiranana (Nord Madagascar) : systématique, paléoécologie et paléobiogéographie [Albian-Middle Turonian ostracodes from the Antsiranana region (northern Madagascar): systematics, palaeoecology and palaeobiogeography]

open access: yesCarnets de Géologie, 2009
Ostracode associations from the Antsiranana region, formerly Diego-Suarez, in northern Madagascar have been studied at a taxonomic level. In the Albian-middle Turonian interval, 29 species belonging to 21 genera have been recognized, 10 new species, one ...
Babinot Jean-François   +2 more
doaj  

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