scholarly journals Developing features of the near-bottomhole zones in productive formations at fields with high gas saturation of formation oil

2021 ◽  
Vol 249 ◽  
pp. 386-392
Author(s):  
Vladislav Galkin ◽  
Dmitry Martyushev ◽  
Inna Ponomareva ◽  
Irina Chernykh

The article studies the formation features of the bottomhole zones in productive formations during operation of production wells in the north of the Perm Territory. Their distinctive feature is the high gas saturation of formation oil. The most widely used parameter in Russian and world practice – the skin factor was used as a criterion characterizing the state of the bottomhole zone. Analysis of scientific publications has shown that one of the main problems of applying the skin factor to assess the state of bottomhole zones is the ambiguity of interpretations of its physical meaning and the impossibility of identifying the prevailing factors that form its value. The paper proposes an approach to identifying such factors in the conditions of the fields under consideration, based on multivariate correlation-regression analysis. Choice of this tool is due to the complexity of the processes occurring in the “formation – bottomhole zone – well” system. When describing complex multifactorial processes, the chosen method demonstrates a high degree of reliability. For a large number of wells in the region, significant material was collected and summarized, including the results of determining the skin factor (1102 values) during hydrodynamic investigations, as well as data on the values ​​of various geological and technological indicators, which can probably be statistically related to the value of the skin factor. A series of multidimensional mathematical models has been built; the skin factor was used as a predicted parameter, and data on the values ​​of geological and technological indicators were used as independent indicators. Analysis of the constructed models is a key stage of this study. Set of parameters included in the multidimensional models, sequence of their inclusion and contribution to the total value of the achieved determination coefficient as the main indicator for the performance of the constructed models were studied. It has been established that the main factor influencing the state of the bottomhole zone is oil degassing. Significant differences in the formation features of the skin factor in the terrigenous and carbonate sediments at the fields under consideration have been determined.

2021 ◽  
Vol 2 (517) ◽  
pp. 6-12
Author(s):  
O. O. Solodovnik ◽  

The present day global financial-economic crisis caused by the spread of the COVID-19 pandemic actualizes the problem of improving the basic approaches to assessing the economic and financial security of systems at all levels of management. The article is aimed at disclosing the essence and analyzing the main approaches to assessing the economic and financial security of the State, region, enterprises in order to substantiate the directions of improving the methodological basis for ensuring the economic and financial security of systems at different levels of management in accordance with the novel wave of challenges and threats. On the basis of research of scientific publications, the main approaches – the indicator and the functional – to the assessment of economic and financial security of systems at all levels of management are allocated and characterized; directions of their improvement are substantiated: expansion of the existing system of indicators by means of inclusion in its composition indicators of early warning of crisis phenomena in other spheres of public life that can undermine economic and financial stability; substantiation of scientific provisions on the use of the multiplier form of the integral indicator. It is proposed to improve the official approach to computing the level of economic security of Ukraine by including the ecological security indicators in the system of economic security indicators. The emphasis is placed on the need for further development of the scenario approach to the assessment of economic and financial security of the State, region, enterprise, which allows to obtain an assessment of the level of security of the research object in the medium and long term, with an average or high degree of uncertainty.


Antiquity ◽  
1976 ◽  
Vol 50 (200) ◽  
pp. 216-222
Author(s):  
Beatrice De Cardi

Ras a1 Khaimah is the most northerly of the seven states comprising the United Arab Emirates and its Ruler, H. H. Sheikh Saqr bin Mohammad al-Qasimi, is keenly interested in the history of the state and its people. Survey carried out there jointly with Dr D. B. Doe in 1968 had focused attention on the site of JuIfar which lies just north of the present town of Ras a1 Khaimah (de Cardi, 1971, 230-2). Julfar was in existence in Abbasid times and its importance as an entrep6t during the sixteenth and seventeenth centuries-the Portuguese Period-is reflected by the quantity and variety of imported wares to be found among the ruins of the city. Most of the sites discovered during the survey dated from that period but a group of cairns near Ghalilah and some long gabled graves in the Shimal area to the north-east of the date-groves behind Ras a1 Khaimah (map, FIG. I) clearly represented a more distant past.


2020 ◽  
Vol 4 (2-3) ◽  
pp. 170-184
Author(s):  
Suvi Nenonen ◽  
Kaj Storbacka

In reconnecting marketing to more plastic and malleable markets, we need more understanding about market evolution. In this research we explore how to assess the state of a market, and how the roles of a market-shaping actor vary depending on this state. We view markets as configurations of 25 interdependent elements and argue that well-functioning markets have a high degree of configurational fit between elements. The level of configurational fit describes the state of a market as a continuum from low to high marketness. The clout of a market actor to influence a market configuration is an amalgamation of the actor’s capabilities, network position and relative power. By exploring marketness and clout as contextual contingencies, we identify four market-shaping roles: market maker, market activist, market champion, and market complementor. The focus of a market-shaping actor, in terms of which elements to influence and in which order, vary significantly between roles.


2020 ◽  
Vol 45 (2) ◽  
pp. 340-348
Author(s):  
James Lucas da Costa-Lima ◽  
Earl Celestino de Oliveira Chagas

Abstract—A synopsis of Dicliptera (Acanthaceae) for Brazil is presented. Six species are recognized: Dicliptera ciliaris, D. sexangularis, and D. squarrosa, widely distributed in South America; D. purpurascens, which ranges from the North Region of Brazil (in the state of Acre) to eastern Bolivia; D. gracilirama, a new species from the Atlantic Forest of northeastern Brazil; and D. granchaquenha, a new species recorded in dry and semideciduous forests in Bolivia and western Brazil, in the state of Mato Grosso do Sul. Furthermore, we propose new synonyms and designate lectotypes for eleven names. An identification key to the six accepted Dicliptera species in Brazil is provided.


2019 ◽  
Vol 53 (4) ◽  
pp. 297-312
Author(s):  
Yu. O. Andryushchenko ◽  
V. S. Gavrilenko ◽  
V. A. Kostiushyn ◽  
V. N. Kucherenko ◽  
A. S. Mezinov ◽  
...  

Abstract In the article is analyzed own field data of the authors and scientific publications on the wintering of Anserinae in the Azov-Black Sea region of Ukraine in 1900–2017, but the main data was obtained in frame of international mid-winter counts (IWC) in 2005–2017. It was found that 9 species of Anserinae occur in this region during the different seasons of the year: Anser anser — nesting, wintering and migrating; Rufibrenta ruficollis, A. albifrons, A. erythropus, A. fabalis — migrating and wintering; Branta canadensis, Branta leucopsis, Branta bernicla, Chen caerulescens — vagrant or birds which flew away from captivity (zoo etc.). Eulabeia indica — is possible vagrant species. The most numerous wintering species is A. albifrons, common — Rufibrenta ruficollis, not numerous — Anser anser, the other species are not met annually and registered in a very small number. There was almost tenfold drop in number of wintering geese in the Azov-Black Sea region of Ukraine during the period of counts. The main reasons of such reducing of geese amount are the followwing: weather and climate conditions, changes in the forage acessibility, hunting and poaching pressure, poisoning as a result of deratization of agricultural lands, and from 2014 — the militarization of the Syvash area and stop of water supplying of Crimea through the North Crimean channell. It is likely that the factors mentioned above led to relocating of wintering areas of Anserinae, and resulted in decreasing of their amount in this region.


Author(s):  
Ruzanna V. Miroshnichenko ◽  
◽  
Anna Yu. Lukyanova ◽  
Svetlana A. Fedorova ◽  
Svetlana V. Nedvizhaj ◽  
...  

2007 ◽  
Vol 66 (4) ◽  
pp. 303-321
Author(s):  
Lode Wils

In het tweede deel van zijn bijdrage 1830: van de Belgische protonatie naar de natiestaat, over de gebeurtenissen van 1830-1831 als slotfase van een passage van de Belgische protonatie doorheen de grote politiek-maatschappelijke en culturele mutaties na de Franse Revolutie, ontwikkelt Lode Wils de stelling dat de periode 1829-1830 de "terminale crisis" vormde van het Koninkrijk der Verenigde Nederlanden. Terwijl koning Willem I definitief had laten verstaan dat hij de ministeriële verantwoordelijkheid definitief afwees en elke kritiek op het regime beschouwde als kritiek op de dynastie, groeide in het Zuiden de synergie in het verzet tussen klerikalen, liberalen en radicale anti-autoritaire groepen. In de vervreemding tussen het Noorden en het Zuiden en de uiteindelijke revolutionaire nationaal-liberale oppositie vanuit het Zuiden, speelde de taalproblematiek een minder belangrijke rol dan het klerikale element en de liberale aversie tegen het vorstelijk absolutisme van Willem I en de aangevoelde uitsluiting van de Belgen uit het openbaar ambt en vooral uit de leiding van de staat.________1830: from the Belgian pre-nation to the nation stateIn the second part of his contribution 1830: from the Belgian pre-nation to the nation state, dealing with the events from 1830-1831 as the concluding phase of a transition of the Belgian pre-nation through the major socio-political and cultural mutations after the French Revolution, Lode Wils develops the thesis that the period of 1829-1830 constituted the "terminal crisis" of the Kingdom of the United Netherlands. Whilst King William I had clearly given to understand that he definitively rejected ministerial responsibility and that he considered any criticism of the regime as a criticism of the dynasty, the synergy of resistance increased between the clericalists, liberals and radical anti-authoritarian groups in the South. In the alienation between the North and the South and the ultimate revolutionary national-liberal opposition from the South the language issue played a less important role than the clericalist element and the liberal aversion against the royal absolutism of William I and the sense of exclusion of the Belgians from public office and particularly from the government of the state.


2020 ◽  
Vol 93 (4) ◽  
pp. 88-100
Author(s):  
V. R. Darbasov ◽  
◽  
M. Р. Solomonov ◽  

The article assesses the state of the heat economy of the Northern region. The purpose of the article is to reveal the reasons for chronic backwardness of the region's industry from the average Russian indicators. To achieve the goal, solved the following problems: the features of heat economy in the North, analyzes the housing development, production and consumption of heat energy, as the sources of heat energy and heat networks, and also reforms in the heat economy of the region, based on which conclusions on assessment of the heat economy of the region. In recent years, there has been a twofold decrease in the rate of renewal of fixed assets of the heat economy against the norm, low rates of introduction of the resource-saving technologies in the heat economy, and in general, in the housing and communal services of the region. The level of marginal balance of supply and demand in the heat energy market is determined. The article is written to correct the decisions of the Federal and regional Executive authorities in terms of ensuring the reliability of heat economy of the Northern region.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Lindsey Haynes-Maslow ◽  
Stephanie B. Jilcott Pitts ◽  
Kathryn A. Boys ◽  
Jared T. McGuirt ◽  
Sheila Fleischhacker ◽  
...  

Abstract Background The North Carolina Healthy Food Small Retailer Program (NC HFSRP) was established through a policy passed by the state legislature to provide funding for small food retailers located in food deserts with the goal of increasing access to and sales of healthy foods and beverages among local residents. The purpose of this study was to qualitatively examine perceptions of the NC HFSRP among store customers. Methods Qualitative interviews were conducted with 29 customers from five NC HFSRP stores in food deserts across eastern NC. Interview questions were related to shoppers’ food and beverage purchases at NC HFSRP stores, whether they had noticed any in-store efforts to promote healthier foods and beverages, their suggestions for promoting healthier foods and beverages, their familiarity with and support of the NC HFSRP, and how their shopping and consumption habits had changed since implementation of the NC HFSRP. A codebook was developed based on deductive (from the interview guide questions) and inductive (emerged from the data) codes and operational definitions. Verbatim transcripts were double-coded and a thematic analysis was conducted based on code frequency, and depth of participant responses for each code. Results Although very few participants were aware of the NC HFSRP legislation, they recognized changes within the store. Customers noted that the provision of healthier foods and beverages in the store had encouraged them to make healthier purchase and consumption choices. When a description of the NC HFSRP was provided to them, all participants were supportive of the state-funded program. Participants discussed program benefits including improving food access in low-income and/or rural areas and making healthy choices easier for youth and for those most at risk of diet-related chronic diseases. Conclusions Findings can inform future healthy corner store initiatives in terms of framing a rationale for funding or policies by focusing on increased food access among vulnerable populations.


Oryx ◽  
2014 ◽  
Vol 49 (1) ◽  
pp. 60-63 ◽  
Author(s):  
Guilherme Braga Ferreira ◽  
Marcelo Juliano Rabelo Oliveira ◽  
Rogério Cunha de Paula ◽  
Flávio Henrique Guimarães Rodrigues ◽  
Érica Daniele Cunha Carmo

AbstractThe bush dog Speothos venaticus, a rare Near Threatened South American canid that lives in packs, was thought to be extinct in Minas Gerais state, south-eastern Brazil, until recently. Here, we report four recent records of the species in Minas Gerais, the first in the state since the description of the species in 1842. All records are from the Cerrado ecosystem in the north and north-west of the state; two are from animals found dead, one from footprints and another from a camera trap. Three of the records were inside or close (< 10 km) to strict protected areas, in a region recognized as the Protected Areas Mosaic Sertão Veredas–Peruaçu, where we expect any new records of the bush dog to be found. We discuss the low probability of detecting the bush dog and the main regional threats to the species, and emphasize the need to protect large and interconnected natural areas and keep them free of domestic dogs to avoid the extinction of the bush dog in Minas Gerais.


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