ISOTOPE-GEOCHEMICAL FEATURES OF AUTHENIC CARBONATES OF THE YU1 PRODUCING HORIZON OF THE VERKH-TARSKOYE OIL FIELD (SOUTH OF WESTERN SIBERIA)

Author(s):  
L. G. Vakulenko ◽  
◽  
O. D. Nikolenko ◽  
D. A. Novikov ◽  
P. A. Yan ◽  
...  

A comprehensive study of the composition of sand and silt deposits of the Yu1 horizon of the Vasyuganskaya Formation upper part of the Verkh-Tarskoye oil field has been carried out. Associations of authigenic minerals have been determined in their cement, among which the calcite is the most widespread. According to petrographic parameters, three generations of calcite have been identified for which detailed isotopicgeochemical and ultramicroscopic studies were carried out for the first time. Wide and multi directional changes in the isotopic composition of carbon and oxygen and in the chemical composition of carbonate minerals were recorded, they indicate significant variations in the conditions of diagenesis and catagenesis, primarily temperature, and different sources of CO2. Significant variations in the isotopic composition of formation waters and its relationship with the isotopic composition of carbonates have been established. Thus, a narrow interval of close δ13C values was revealed, amounting to –10.5 to –9.1 ‰ in the formation waters of group II, and from –10.7 to –9.1 ‰ in calcites of the third generation. The source of CO2 in this system should be considered a carbon dioxide, which is formed in the process of metamorphism of carbonate rocks of the Paleozoic age.

Author(s):  
Lyudmila G. Vakulenko ◽  
◽  
Dmitry A. Novikov ◽  
Ostap D. Nikolenko ◽  
Fedor F. Dultsev ◽  
...  

The first data of a comprehensive study of the isotope-geochemical features of the water-rock system are presented on the example of the Yu 1 horizon of the Verkh-Tarsk oil field. It was established that the reservoir waters of the developed deposits are similar in the isotopic ratios and located in the same area with the waters of the Apt-Alb-Cenomanian aquifer complex (an agent for flooding). In the cement of silt-sandy rocks among the authigenic minerals most widely represented by calcite, three generations of it were established. A narrow range of δ 13 C values was revealed in the analysis of the δ 13 C - δ 18 О isotope pair. In waters it ranges from -10.5 to -9.1 ‰, and in calcites of the third generation from -10.7 to -9.1 ‰.


2019 ◽  
Vol 2 (1) ◽  
pp. 141-148
Author(s):  
Dmitry Novikov ◽  
Anatoly Chernykh ◽  
Fedor Dultsev

The results of the analysis of rare earth elements distribution in groundwater of J1 reservoir of the Verkh-Tarka oil field are reported for the first time. It was established that groundwater with Cl Na composition are predominate, with a value of total mineralization from 24.7 up to 48.9 g/dm3. The content of REE ranges from 3.72 to 30.49 µg/dm3 with an average of 13.61 µg/dm3. The highest concentrations are observed (µg/dm3) in La (up to 20.8), Eu (up to 7.9), Gd (up to 1.8) and Dy (up to 0.65). The level of dissolved REE is determined by their distribution in the water-bearing sandstones. Migration of rare-earth elements is carried out in the form of free ions and hydroxide complexes.


Zootaxa ◽  
2009 ◽  
Vol 2189 (1) ◽  
pp. 1-218 ◽  
Author(s):  
RICHARD E. PETIT

Several members of the Sowerby family were artists and authors of natural history works in the 19 th Century. Three of them, George Brettingham Sowerby, his son, and his grandson (I, II & III respectively) are especially known for their molluscan publications. The first to bear the name is best known for his Genera of recent and fossil shells and for initiating the Thesaurus Conchyliorum, the latter work being finished by his son and grandson. He was also primarilyresponsible for the Conchological Illustrations for which his son produced the plates and several monographs. In addition to the Illustrations and much of the Thesaurus, G. B. Sowerby II is known for his Manual of Conchology and for the final volumes of Reeve’s Conchologia Iconica. The third generation of this line finished the Thesaurus and published an enlarged edition of his father’s Illustrated Index of British Shells. He published numerous papers in journals and is best known for a series of papers on mollusks of South Africa. Complete molluscan bibliographies for all three G. B. Sowerbys are compiled and collated and a list of their molluscan taxa is here given for the first time.


2009 ◽  
Vol 24 (S1) ◽  
pp. 1-1
Author(s):  
N. Zivlak - Radulovic ◽  
M. Miskovic ◽  
D. Zoric ◽  
T. Maglov ◽  
D. Ilic

Sertraline is an antidepressant of the third generation of the selective serotonin reuptake inhibitor (SSRI) class. It is simple to use and has a wide application in treating various psychiatric disorders, but with much less pronounced side effects.The aim of this study is to establish the frequency and adverse effects in users of sertraline during clinical treatment.The method of work was a prospective study which comprised 30 participants who came for a medical examination for the first time and who had a valid indication for drug suitability. The patients were observed during the following two control check-ups. The findings thus gathered were statistically analysed and shown on the graphs.Conclusion:The examination has shown that the possible side effects of sertraline are rare and mainly of temporary nature, and confirm the effectiveness and safety of sertraline in routine clinical practice.


2018 ◽  
Vol 146 (1) ◽  
pp. 213-229 ◽  
Author(s):  
Takumi Honda ◽  
Takemasa Miyoshi ◽  
Guo-Yuan Lien ◽  
Seiya Nishizawa ◽  
Ryuji Yoshida ◽  
...  

AbstractJapan’s new geostationary satellite Himawari-8, the first of a series of the third-generation geostationary meteorological satellites including GOES-16, has been operational since July 2015. Himawari-8 produces high-resolution observations with 16 frequency bands every 10 min for full disk, and every 2.5 min for local regions. This study aims to assimilate all-sky every-10-min infrared (IR) radiances from Himawari-8 with a regional numerical weather prediction model and to investigate its impact on real-world tropical cyclone (TC) analyses and forecasts for the first time. The results show that the assimilation of Himawari-8 IR radiances improves the analyzed TC structure in both inner-core and outer-rainband regions. The TC intensity forecasts are also improved due to Himawari-8 data because of the improved TC structure analysis.


2020 ◽  
Vol 11 ◽  
pp. 3-19
Author(s):  
V. G. Korinevsky ◽  
◽  
E. V. Korinevsky

The data obtained for the first time on the isotopic composition of oxygen and carbon of calcites and graphites of dolomitecalcite rocks of the Ilmeny Mountains and dykes of a similar composition in the Plastovsky district have confirmed their magmatic genesis. The temperature of formation of carbonate bodies (590—1000 °Ñ), determined from the isotopic ratios of C and O in calcite and graphite, corresponds to the temperature range (600—900 °Ñ) of the formation of carbonatite associations. According to the same ratios of isotopes in calcites, the protoliths of carbonate rocks are located within the carbonatite fields of the folded regions and in the transition zone to carbonates of marine origin. This is probably due to the fact that these rocks are a product of carbonate magma during remelting of sedimentary carbonate rocks in subduction zones, or under the influence of the heat of granite intrusions.


ZARCH ◽  
2018 ◽  
pp. 44-61
Author(s):  
Robert McCarter

In September 1959, at the invitation of Alison and Peter Smithson, the American architect Louis I. Kahn (1901-1974) attended the 11th and last Congrés Internationaux d’Architecture Moderne (CIAM) conference held at Henry van de Velde’s Kroller-Muller Museum in Otterlo, the Netherlands. There he met the Dutch architect Aldo van Eyck (1918-1999), founding member of Team 10, the successor of CIAM that emerged at the end of this conference. The paths of these two architects – the Second-Generation modernist Kahn, then 58 years old, and the Third-Generation modernist Van Eyck, then 40 years old – parallel in so astonishingly many ways, crossed here for the first time, deeply affecting them both at a time of critical transition in their respective practices and thought.


2017 ◽  
Vol Special Issue on... (Project presentations) ◽  
Author(s):  
Lucía Rodríguez-Noriega

The Project The literary tradition in the third and fourth centuries CE: Grammarians, rhetoricians and sophists as sources of Graeco-Roman literature (FFI2014-52808-C2-1-P) aims to trace and classify all types of quotations, both explicit (with or without mention of the author and/or title) and hidden, in a corpus comprising the Greek grammarians, rhetoricians and " sophists " of the third and fourth centuries CE. At the same time, we try to detect whether or not these are first-hand quotations, and if our quoting authors (28 in all) are, in turn, secondary sources for the same citations in later authors. We also study the philological (textual) aspects of the quotations in their context, and the problems of limits they sometimes pose. Finally, we are interested in the function of the quotation in the citing work. This is the first time that such a comprehensive study of this corpus is attempted. This paper explains our methodology, and how we store all these data in our electronic card-file.


EP Europace ◽  
2020 ◽  
Vol 22 (Supplement_1) ◽  
Author(s):  
V Velagic ◽  
I Prepolec ◽  
V Pasara ◽  
D Kardum ◽  
B Pezo-Nikolic ◽  
...  

Abstract Introduction The third-generation cryoballoon has been designed with a 40% shortened tip length compared with the former second-generation CB device. Ideally, a shorter tip could result with an improved visualization of real-time (RT) recordings in the pulmonary vein (PV) due to a more proximal positioning of the inner lumen mapping catheter. Beside the high incidence of RT recordings, for the first time, we observed dual fascicle electrograms with different isolation time for each fascicle, when using the new device. Purpose We sought to analyze the rate of visualization of RT recordings and dual fascicle electrograms in our first series of patients with the third generation cryoballoon device. Methods All consecutive patients having undergone CB ablation using the third generation technology were analyzed. Procedures were performed under conscious sedation. A single transeptal puncture was preformed guided by intracardial ultrasound and a 28 mm cryoballoon was used. A single 180 seconds freeze strategy was employed. Results A total of 80 consecutive patients (77.5% male, 60.3 ± 10.8 years) were evaluated. Real-time recordings were detected in 275 of 320 PVs (85.9%). Specifically, RT recordings could be visualized in 68 left superior PVs (85%), 69 left inferior PVs (86.2%), 73 right superior PVs (91.2%), and 65 right inferior PVs (81.2%). Furthermore, in 14 of 320 PVs (4.3%) two different fascicles electrograms were detected. A distinctive isolation time for each fascicle could be observed both in sinus rhythm and in atrial fibrillation (Picture). Most commonly, dual fascicles were observed in left superior PV (7.5%) and right inferior PV (6.3%). In the rest of the veins this phenomenon was not so frequent. In 2.5% of right superior PV and in only 1.2% of left inferior PV dual fascicles could be observed. Conclusion The rate of visualization of RT recordings is significantly high during third generation CB ablation. Real-time recordings can be visualized in 85.9% of veins with this novel cryoballoon. Furthermore, for the first time, isolation of two different fascicles during a single cryoballoon lesion could be observed. Other that more proximal mapping catheter position, there is second possible explanation for the visualization of dual fascicles with this novel balloon. Shorter tip could result with poorer cryoballoon stability and weaker contact with the atrium wall, hence non-uniform freezing and isolation of different fascicles in different times. Abstract Figure.


Sign in / Sign up

Export Citation Format

Share Document