An integrated approach to evaluating the effectiveness of infill drilling of the Ust-Tegusskoye field

2021 ◽  
pp. 140-150
Author(s):  
T. Yu. Degtyareva ◽  
R. R. Migmanov
Keyword(s):  
Hydrodynamic Model ◽  
Production Efficiency ◽  
Western Siberia ◽  
Integrated Approach ◽  
Field Site ◽  
Well Drilling ◽  
Factors Affecting ◽  
Remaining Oil ◽  
Infill Drilling ◽  
Selection Of

The article considers the experience of using infill well patten in the territory of Western Siberia. The justification of geological and geotechnical factors affecting the efficiency of infill drilling with the subsequent use of a sector-crushed hydrodynamic model of the field site is given. With the help of the identified criteria, promising areas of infill drilling of wells are mapped, and it is established that increasing the detail of the grid of the hydrodynamic model makes it possible to clarify the localization of remaining oil in place. Based on the obtained results from the hydrodynamic model, variants of adjusted planned well count are compared according to accumulated and annual indicators. Thus, the infill well drilling program is optimized. The implementation of an integrated approach to the selection of sites for compaction drilling and the use of a detailed hydrodynamic model of this site allows to increase the production efficiency of recoverable remaining oil in place, as well as to level the risks of oil production.

scholarly journals Development of an integrated approach to the selection of remediation measures and environmental technologies for their implementation

2021 ◽  
Vol 258 ◽  
pp. 08027
Author(s):  
Vadim Bespalov ◽  
Oksana Gurova
Keyword(s):  
Integrated Approach ◽  
Basic Principles ◽  
Factors Affecting ◽  
Remediation Measures ◽  
Environmental Monitoring System ◽  
Scientific Substantiation ◽  
Environmental Technologies ◽  
Environmental Measures ◽  
Selection Of

The article is devoted to the scientific substantiation of the formation of a comprehensive methodology for the selection of highly effective and economical remediation measures. To do this, the authors have gradually carried out studies of factors affecting the environment, assessing the levels of their environmental hazard, analyzing the goals and main tasks of the international environmental monitoring system with a proposal for the basic principles of its improvement, and also proposed a new classification of environmental measures aimed at suppressing environmental impacts factors.

Selection of factors affecting increase of non-oil export

2018 ◽  
Vol 13 (1) ◽  
pp. 45-52
Author(s):  
Aynura Manaf kizi Ismayilova ◽  
Keyword(s):  
Factors Affecting ◽  
Oil Export ◽  
Selection Of

Regional, institutional and individual factors affecting selection of minimally invasive nephroureterectomy in Japan: A national database analysis

2012 ◽  
Vol 20 (7) ◽  
pp. 695-700 ◽  
Author(s):  
Toru Sugihara ◽  
Hideo Yasunaga ◽  
Hiromasa Horiguchi ◽  
Tetsuya Fujimura ◽  
Hiroaki Nishimatsu ◽  
...  
Keyword(s):  
Minimally Invasive ◽  
National Database ◽  
Individual Factors ◽  
Database Analysis ◽  
Factors Affecting ◽  
Selection Of

scholarly journals Genomic Analysis, Progress and Future Perspectives in Dairy Cattle Selection: A Review

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 599
Author(s):  
Miguel A. Gutierrez-Reinoso ◽  
Pedro M. Aponte ◽  
Manuel Garcia-Herreros
Keyword(s):  
Dairy Cattle ◽  
Production Efficiency ◽  
Association Studies ◽  
Phenotypic Traits ◽  
Progeny Testing ◽  
Genome Wide Association Studies ◽  
Genetic Progress ◽  
Breeding Programs ◽  
Increased Risk ◽  
Selection Of

Genomics comprises a set of current and valuable technologies implemented as selection tools in dairy cattle commercial breeding programs. The intensive progeny testing for production and reproductive traits based on genomic breeding values (GEBVs) has been crucial to increasing dairy cattle productivity. The knowledge of key genes and haplotypes, including their regulation mechanisms, as markers for productivity traits, may improve the strategies on the present and future for dairy cattle selection. Genome-wide association studies (GWAS) such as quantitative trait loci (QTL), single nucleotide polymorphisms (SNPs), or single-step genomic best linear unbiased prediction (ssGBLUP) methods have already been included in global dairy programs for the estimation of marker-assisted selection-derived effects. The increase in genetic progress based on genomic predicting accuracy has also contributed to the understanding of genetic effects in dairy cattle offspring. However, the crossing within inbred-lines critically increased homozygosis with accumulated negative effects of inbreeding like a decline in reproductive performance. Thus, inaccurate-biased estimations based on empirical-conventional models of dairy production systems face an increased risk of providing suboptimal results derived from errors in the selection of candidates of high genetic merit-based just on low-heritability phenotypic traits. This extends the generation intervals and increases costs due to the significant reduction of genetic gains. The remarkable progress of genomic prediction increases the accurate selection of superior candidates. The scope of the present review is to summarize and discuss the advances and challenges of genomic tools for dairy cattle selection for optimizing breeding programs and controlling negative inbreeding depression effects on productivity and consequently, achieving economic-effective advances in food production efficiency. Particular attention is given to the potential genomic selection-derived results to facilitate precision management on modern dairy farms, including an overview of novel genome editing methodologies as perspectives toward the future.

scholarly journals The Importance of International Medical Rotations in Selection of an Otolaryngology Residency

2011 ◽  
Vol 3 (3) ◽  
pp. 414-416 ◽  
Author(s):  
Nathan H Boyd ◽  
Raul M Cruz
Keyword(s):  
Residency Program ◽  
General Interest ◽  
Factors Affecting ◽  
Residency Programs ◽  
International Elective ◽  
Program Selection ◽  
Application Service ◽  
Residency Application ◽  
Lifestyle Research ◽  
Selection Of

Abstract Background The objective of this study was to determine the extent of interest in international electives among prospective otolaryngology residents and to determine whether the availability of international electives affected students' interest in ranking a particular residency program. Methods A 3-part survey was given to all medical students enrolled in the 2008 otolaryngology match via the Electronic Residency Application Service. Part 1 elicited demographic information. Part 2 explored general interest in international rotations. Part 3 involved ranking several factors affecting students' choice of residency programs. This survey was developed at our institution, with no formal validation. Participation was anonymous and voluntary. Results A total of 307 students entered the otolaryngology match, and 55 surveys (18%) were completed. Twenty-five of 55 students (55%) had completed an international elective during or prior to medical school, and 51 of 55 respondents (93%) had a “strong” or “very strong” desire to participate in an international elective during residency; 48 of 55 students (87%) had a “strong” or “very strong” desire to participate in international surgical missions after residency. Future practice goals had no correlation with interest in international rotations, either during or after residency training. Respondents ranked 8 factors that had an impact on residency program selection in the following order of importance: operative experience, location, lifestyle, research opportunities, didactics, international electives, prestige of program, and salary. Conclusion Interest in international medicine among prospective otolaryngologists was high in this subset of respondents but did not appear to affect residency program selection.

scholarly journals Factors affecting nest-site selection of Sabine's Gulls in the eastern Canadian Arctic

2005 ◽  
Vol 83 (9) ◽  
pp. 1240-1245 ◽  
Author(s):  
Iain J Stenhouse ◽  
H Grant Gilchrist ◽  
William A Montevecchi
Keyword(s):  
Site Selection ◽  
Nest Site ◽  
Nest Site Selection ◽  
Breeding Habitat ◽  
Factors Affecting ◽  
Invertebrate Prey ◽  
Terrestrial Invertebrate ◽  
Individual Fitness ◽  
Sabine’S Gull ◽  
Selection Of

The selection of breeding habitat is of prime importance for individual fitness. Among birds, natural selection should favour the ability to recognize and select habitat suitable for nesting and rearing chicks. This study compares the characteristics of Sabine's Gull, Xema sabini (Sabine, 1819), nest sites with random points across a coastal tundra environment on Southampton Island, Nunavut, Canada. The availability of terrestrial invertebrate prey was also examined among habitats. Sabine's Gull nests were nonrandomly distributed in relation to vegetation, substrate, and proximity to water. Gulls nested within approximately 1 km of the coastline and selected sites with the greatest proportions of moss and standing water (i.e., they nested close to the edge of small freshwater ponds near shore). However, there were no detectable differences in characteristics between successful and unsuccessful nests within preferred habitat. The dynamics of terrestrial invertebrate prey communities varied between years, but the volume of invertebrates in Sabine's Gull nesting habitat was intermediate between the most productive habitats and the least productive habitats in both years. However, nest-site selection in Sabine's Gulls may also be influenced by the availability of aquatic invertebrates (not examined in this study) and their proximity to the marine coastline, where chicks are taken to be reared.

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