59 research outputs found

    Place of nature in economic development

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    In the presence of externalities involving nature's services, individuals and communities overexploit natural capital. In other words ecological services are subsidized. This working paper proposes a mathematical model that factors in values of social and environmental costs/benefits. Nature consists of degradable resources: resource stocks are self-regenerative, but suffer from depletion or deterioration when they are over-used. Extreme poverty is frequently associated with a degraded environment. Studies confirm that the world's poorest people live in especially fragile natural environments. When policies are evaluated a social cost-benefit analysis must be included

    Realizations of Real Low-Dimensional Lie Algebras

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    Using a new powerful technique based on the notion of megaideal, we construct a complete set of inequivalent realizations of real Lie algebras of dimension no greater than four in vector fields on a space of an arbitrary (finite) number of variables. Our classification amends and essentially generalizes earlier works on the subject. Known results on classification of low-dimensional real Lie algebras, their automorphisms, differentiations, ideals, subalgebras and realizations are reviewed.Comment: LaTeX2e, 39 pages. Essentially exetended version. Misprints in Appendix are correcte

    Current approaches to quality assessment, non-clinical and clinical studies of dendritic cell vaccines in oncology

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    At present, personalised cellular immunotherapy is considered a promising approach to the treatment of malignant neoplasms. The effectiveness of these cellular immunotherapy methods is evaluated in the context of clinical and biological tumour characteristics and the state of the immune system of a particular patient. One of the immunotherapy options for cancer is the development of autologous dendritic cell vaccines.The aim of this study was to analyse current methodological approaches to the evaluation of the quality, efficacy, and safety of dendritic cell cancer vaccines.This review describes the functional role of dendritic cells in immune response regulation. The paper presents the results of literature analysis covering current approaches to obtaining dendritic cell vaccines with specific characteristics, quality assessment, studies of the anti-tumour efficacy of cell therapy products, and the experience of conducting non-clinical and clinical studies. The review highlights specific aspects of international experience in the registration and clinical use of cell therapy products. The authors discuss methodological approaches to non-clinical studies of dendritic cell vaccines, which should aim to obtain information to select the dose, route, and mode of administration and to identify immunological markers correlating to the clinical efficacy of cell therapy products. The paper covers international experience in conducting clinical trials of dendritic cell vaccines for various malignant neoplasms. The authors propose a list of quality attributes of human somatic cell-based medicinal products for further clinical use

    New Bacillus subtilis Strains as Promising Probiotics

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    Β© 2018, Pleiades Publishing, Ltd. The properties of new B. subtilis strains GM2 and GM5, isolated from potato rhizosphere and possessing high antimicrobial activity, were studied. The potential of the strains for their use as probiotics was characterized. The strains were resistant to bile and to a wide range of the ambient pH. B. subtilis strains GM2 and GM5 possessed proteolytic and phytate-hydrolyzing activity and proved to be safe for model animals. The strains were characterized by antagonistic properties against phytopathogenic micromycetes, as well as against pathogenic and opportunistic enterobacteria. B. subtilis GM2 and GM5 were concluded to be promising strains for use as probiotics

    ΠžΠ‘Π‘Π›Π•Π”ΠžΠ’ΠΠΠ˜Π― ΠŸΠžΠ§Π’Π« НА ЯЙЦА Π“Π•Π›Π¬ΠœΠ˜ΠΠ’ΠžΠ’

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    The method of research of tests of the soil on eggs of helminths which sur- passes the method of Romanenko offered earlier in the efficiency is offered and can be used in practice and when carrying out scientific researches. This method was applied to inspection of objects of environment of Kazan city and allowed to reveal big impurity eggs of geohelminths. The developed method allowed to reveal in addition about 36 % of eggs of ascarids than on Romanenko's method that is caused by application of several components in flotation liquid: solutions of chlo- ride of zinc and sodium chloride and glycerin. Components of the flotation liquid don't break morphology of eggs of parasites and don't create difficulties with mor- phological identification of the helminthsΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΌΠ΅Ρ‚ΠΎΠ΄ исслСдования ΠΏΡ€ΠΎΠ± ΠΏΠΎΡ‡Π²Ρ‹ Π½Π° яйца Π³Π΅Π»ΡŒΠΌΠΈΠ½Ρ‚ΠΎΠ², ΠΊΠΎΡ‚ΠΎΡ€Ρ‹ΠΉ прСвосходит ΠΏΠΎ своСй эф- фСктивности ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½Ρ‹ΠΉ Ρ€Π°Π½Π΅Π΅ ΠΌΠ΅Ρ‚ΠΎΠ΄ Π ΠΎΠΌΠ°Π½Π΅Π½ΠΊΠΎ ΠΈ ΠΌΠΎΠΆΠ΅Ρ‚ Π±Ρ‹Ρ‚ΡŒ использован Π½Π° ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅ ΠΈ ΠΏΡ€ΠΈ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅- Π½ΠΈΠΈ Π½Π°ΡƒΡ‡Π½Ρ‹Ρ… исслСдований. Π”Π°Π½Π½Ρ‹ΠΉ ΠΌΠ΅Ρ‚ΠΎΠ΄ Π±Ρ‹Π» ΠΏΡ€ΠΈ- ΠΌΠ΅Π½Π΅Π½ для обслСдования ΠΎΠ±ΡŠΠ΅ΠΊΡ‚ΠΎΠ² внСшнСй срСды Π³ΠΎ- Ρ€ΠΎΠ΄Π° Казани ΠΈ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ» Π²Ρ‹ΡΠ²ΠΈΡ‚ΡŒ Π±ΠΎΠ»ΡŒΡˆΡƒΡŽ загрязнСн- Π½ΠΎΡΡ‚ΡŒ яйцами Π³Π΅ΠΎΠ³Π΅Π»ΡŒΠΌΠΈΠ½Ρ‚ΠΎΠ². Π Π°Π·Ρ€Π°Π±ΠΎΡ‚Π°Π½Π½Ρ‹ΠΉ ΠΌΠ΅Ρ‚ΠΎΠ΄ ΠΏΠΎΠ·Π²ΠΎΠ»ΠΈΠ» Π΄ΠΎΠΏΠΎΠ»Π½ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ Π²Ρ‹ΡΠ²ΠΈΡ‚ΡŒ ΠΏΡ€ΠΈΠ±Π»ΠΈΠ·ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎ 36 % яиц аскарид, Ρ‡Π΅ΠΌ ΠΏΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Ρƒ Π ΠΎΠΌΠ°Π½Π΅Π½ΠΊΠΎ, Ρ‡Ρ‚ΠΎ ΠΎΠ±Ρƒ- словлСно ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ΠΌ Π½Π΅ΡΠΊΠΎΠ»ΡŒΠΊΠΈΡ… ΠΊΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚ΠΎΠ² Π² Ρ„Π»ΠΎΡ‚Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ Тидкости: растворов Ρ…Π»ΠΎΡ€ΠΈΠ΄Π° Ρ†ΠΈΠ½ΠΊΠ°, Ρ…Π»ΠΎΡ€ΠΈΠ΄Π° натрия ΠΈ Π³Π»ΠΈΡ†Π΅Ρ€ΠΈΠ½Π°. ΠšΠΎΠΌΠΏΠΎΠ½Π΅Π½Ρ‚Ρ‹ ΠΏΡ€Π΅Π΄Π»Π°Π³Π°Π΅- ΠΌΠΎΠΉ Ρ„Π»ΠΎΡ‚Π°Ρ†ΠΈΠΎΠ½Π½ΠΎΠΉ систСмы Π½Π΅ Π½Π°Ρ€ΡƒΡˆΠ°ΡŽΡ‚ ΠΌΠΎΡ€Ρ„ΠΎΠ»ΠΎΠ³ΠΈΡŽ яиц ΠΏΠ°Ρ€Π°Π·ΠΈΡ‚ΠΎΠ² ΠΈ Π½Π΅ ΡΠΎΠ·Π΄Π°ΡŽΡ‚ Π·Π°Ρ‚Ρ€ΡƒΠ΄Π½Π΅Π½ΠΈΠΉ с ΠΌΠΎΡ€Ρ„ΠΎΠ»ΠΎΠ³ΠΈ- чСской ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠ΅ΠΉ Π²ΠΎΠ·Π±ΡƒΠ΄ΠΈΡ‚Π΅Π»

    Computation of Invariants of Lie Algebras by Means of Moving Frames

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    A new purely algebraic algorithm is presented for computation of invariants (generalized Casimir operators) of Lie algebras. It uses the Cartan's method of moving frames and the knowledge of the group of inner automorphisms of each Lie algebra. The algorithm is applied, in particular, to computation of invariants of real low-dimensional Lie algebras. A number of examples are calculated to illustrate its effectiveness and to make a comparison with the same cases in the literature. Bases of invariants of the real solvable Lie algebras up to dimension five, the real six-dimensional nilpotent Lie algebras and the real six-dimensional solvable Lie algebras with four-dimensional nilradicals are newly calculated and listed in tables.Comment: 17 pages, extended versio

    Draft genome sequence data of Lysinibacillus fusiformis strain GM, isolated from potato phyllosphere as a potential probiotic

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    Β© 2018 The Authors Here we present the morphological and physiological properties of isolated Lysinibacillus fusiformis strain GM, its draft genome sequence as well as annotation and analysis of its genome. Initial analysis of MALDI-TOF mass spectrometry, 16S rRNA gene analysis and in silico DNA-DNA hybridization revealed that the strain belongs to the species Lysinibacillus fusiformis. The 4,678,122 bp draft genome consist of 17 scaffolds encoding 4588 proteins and 137 RNAs. Annotation of the genome sequence revealed cellulase and protease encoding genes, genes of adhesion proteins and putative genes responsible for the biosynthesis of antimicrobial metabolites. The Whole Genome Shotgun project has been deposited at DDBJ/EMBL/GenBank under the accession number NTMQ00000000.1 (https://www.ncbi.nlm.nih.gov/nuccore/NZ_NTMQ00000000.1)

    Block Copolymers of Ethylene Oxide andΒ Propylene Oxide: Prospects for Medical and Pharmaceutical Application in Russia

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    Block copolymers of ethylene oxide and propylene oxide (EO/PO block copolymers) are polymeric non-ionic surfactants with a high hydrophilic–lipophilic balance also referred to as pluronics, poloxamers, or proxanols. These compounds are among the most demanded modern excipients for the production of medicines. EO/PO block copolymers are used both in the production of traditional (liquid, semi-solid, and solid) dosage forms and as part of targeted delivery systems. The extensive application of EO/PO block copolymers is due to the diverse array of their properties, including not only solubilising, emulsifying, gelling, and other effects but also thermoreversibility, which is essential for developing in situ delivery systems and 3D printing technologies.The aim of the study was to evaluate the potential of EO/PO block copolymers for medicinal use and to assess the range of medicinal products approved in the Russian Federation that contain EO/PO block copolymers.This review presents an analysis of the register of poloxamer-containing medicines approved in the Russian Federation, a list of the largest manufacturers of EO/PO block copolymers in the world, and a study of the possibility to use copolymers for medical purposes. Currently, there are more than 10 chemical manufacturers producing EO/PO block copolymers for the pharmaceutical, biotechnology, and other industries around the world. EO/PO block copolymers are included in more than 60 medicinal products present in the Russian pharmaceutical market; this observation indicates the need to phase out the import of poloxamers

    CΠΎΠ²Ρ€Π΅ΠΌΠ΅Π½Π½Ρ‹Π΅ ΠΏΠΎΠ΄Ρ…ΠΎΠ΄Ρ‹ ΠΊ ΠΎΡ†Π΅Π½ΠΊΠ΅ качСства, ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡŽ доклиничСских ΠΈ клиничСских исслСдований Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½ΠΎ-ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… Π²Π°ΠΊΡ†ΠΈΠ½ Π² ΠΎΠ½ΠΊΠΎΠ»ΠΎΠ³ΠΈΠΈ

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    At present, personalised cellular immunotherapy is considered a promising approach to the treatment of malignant neoplasms. The effectiveness of these cellular immunotherapy methods is evaluated in the context of clinical and biological tumour characteristics and the state of the immune system of a particular patient. One of the immunotherapy options for cancer is the development of autologous dendritic cell vaccines.The aim of this study was to analyse current methodological approaches to the evaluation of the quality, efficacy, and safety of dendritic cell cancer vaccines.This review describes the functional role of dendritic cells in immune response regulation. The paper presents the results of literature analysis covering current approaches to obtaining dendritic cell vaccines with specific characteristics, quality assessment, studies of the anti-tumour efficacy of cell therapy products, and the experience of conducting non-clinical and clinical studies. The review highlights specific aspects of international experience in the registration and clinical use of cell therapy products. The authors discuss methodological approaches to non-clinical studies of dendritic cell vaccines, which should aim to obtain information to select the dose, route, and mode of administration and to identify immunological markers correlating to the clinical efficacy of cell therapy products. The paper covers international experience in conducting clinical trials of dendritic cell vaccines for various malignant neoplasms. The authors propose a list of quality attributes of human somatic cell-based medicinal products for further clinical use.На сСгодняшний дСнь ΠΏΡ€ΠΈΠΌΠ΅Π½Π΅Π½ΠΈΠ΅ пСрсонализированных ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠΉ ΠΈΠΌΠΌΡƒΠ½ΠΎΡ‚Π΅Ρ€Π°ΠΏΠΈΠΈ злокачСствСнных Π½ΠΎΠ²ΠΎΠΎΠ±Ρ€Π°Π·ΠΎΠ²Π°Π½ΠΈΠΉ рассматриваСтся ΠΊΠ°ΠΊ пСрспСктивный ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ ΠΊ Π»Π΅Ρ‡Π΅Π½ΠΈΡŽ ΠΎΠΏΡƒΡ…ΠΎΠ»Π΅ΠΉ, Π° ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ этих ΠΌΠ΅Ρ‚ΠΎΠ΄ΠΎΠ² оцСниваСтся Π² контСкстС ΠΊΠ»ΠΈΠ½ΠΈΠΊΠΎ-биологичСских характСристик ΠΎΠΏΡƒΡ…ΠΎΠ»ΠΈ ΠΈ состояния ΠΈΠΌΠΌΡƒΠ½Π½ΠΎΠΉ систСмы ΠΊΠΎΠ½ΠΊΡ€Π΅Ρ‚Π½ΠΎΠ³ΠΎ ΠΏΠ°Ρ†ΠΈΠ΅Π½Ρ‚Π°. Одним ΠΈΠ· Π²Π°Ρ€ΠΈΠ°Π½Ρ‚ΠΎΠ² ΠΈΠΌΠΌΡƒΠ½ΠΎΡ‚Π΅Ρ€Π°ΠΏΠΈΠΈ являСтся Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠ° Π°ΡƒΡ‚ΠΎΠ»ΠΎΠ³ΠΈΡ‡Π½Ρ‹Ρ… ΠΏΡ€ΠΎΡ‚ΠΈΠ²ΠΎΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Ρ… Π²Π°ΠΊΡ†ΠΈΠ½ Π½Π° основС Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ.ЦСль Ρ€Π°Π±ΠΎΡ‚Ρ‹ β€” Π°Π½Π°Π»ΠΈΠ· соврСмСнных мСтодологичСских ΠΏΠΎΠ΄Ρ…ΠΎΠ΄ΠΎΠ² ΠΊ ΠΎΡ†Π΅Π½ΠΊΠ΅ качСства, эффСктивности ΠΈ бСзопасности ΠΏΡ€ΠΎΡ‚ΠΈΠ²ΠΎΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²Ρ‹Ρ… Π²Π°ΠΊΡ†ΠΈΠ½ Π½Π° основС Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ.Π’ ΠΎΠ±Π·ΠΎΡ€Π΅ ΠΏΡ€ΠΈΠ²Π΅Π΄Π΅Π½ΠΎ описаниС Ρ„ΡƒΠ½ΠΊΡ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎΠΉ Ρ€ΠΎΠ»ΠΈ Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½Ρ‹Ρ… ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Π² рСгуляции ΠΈΠΌΠΌΡƒΠ½Π½ΠΎΠ³ΠΎ ΠΎΡ‚Π²Π΅Ρ‚Π°, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ Π°Π½Π°Π»ΠΈΠ· Π΄Π°Π½Π½Ρ‹Ρ… Π»ΠΈΡ‚Π΅Ρ€Π°Ρ‚ΡƒΡ€Ρ‹, посвящСнных соврСмСнным ΠΏΠΎΠ΄Ρ…ΠΎΠ΄Π°ΠΌ получСния Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½ΠΎ-ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… Π²Π°ΠΊΡ†ΠΈΠ½ с Π·Π°Π΄Π°Π½Π½Ρ‹ΠΌΠΈ характСристиками, ΠΎΡ†Π΅Π½ΠΊΠ΅ качСства, ΠΈΠ·ΡƒΡ‡Π΅Π½ΠΈΡŽ ΠΏΡ€ΠΎΡ‚ΠΈΠ²ΠΎΠΎΠΏΡƒΡ…ΠΎΠ»Π΅Π²ΠΎΠΉ эффСктивности ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½ΠΎΠ³ΠΎ ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚Π°, Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΎΠΏΡ‹Ρ‚Ρƒ провСдСния доклиничСских ΠΈ клиничСских исслСдований. ΠžΡΠ²Π΅Ρ‰Π΅Π½Ρ‹ спСцифичСскиС аспСкты ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½ΠΎΠ³ΠΎ ΠΎΠΏΡ‹Ρ‚Π° рСгистрации ΠΈ клиничСского примСнСния ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ². Π’ ΠΎΠ±Π·ΠΎΡ€Π΅ обсуТдСны мСтодологичСскиС ΠΏΠΎΠ΄Ρ…ΠΎΠ΄Ρ‹ ΠΊ ΠΏΡ€ΠΎΠ²Π΅Π΄Π΅Π½ΠΈΡŽ доклиничСских исслСдований Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½ΠΎ-ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… Π²Π°ΠΊΡ†ΠΈΠ½, ΠΊΠΎΡ‚ΠΎΡ€Ρ‹Π΅ Π΄ΠΎΠ»ΠΆΠ½Ρ‹ Π±Ρ‹Ρ‚ΡŒ Π½Π°Ρ†Π΅Π»Π΅Π½Ρ‹ Π½Π° ΠΏΠΎΠ»ΡƒΡ‡Π΅Π½ΠΈΠ΅ свСдСний для Π²Ρ‹Π±ΠΎΡ€Π° Π΄ΠΎΠ·Ρ‹, обоснования ΠΏΡƒΡ‚ΠΈ ввСдСния, Ρ€Π΅ΠΆΠΈΠΌΠ° примСнСния ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ², Π° Ρ‚Π°ΠΊΠΆΠ΅ ΠΈΠ΄Π΅Π½Ρ‚ΠΈΡ„ΠΈΠΊΠ°Ρ†ΠΈΠΈ иммунологичСских ΠΌΠ°Ρ€ΠΊΠ΅Ρ€ΠΎΠ², ΠΊΠΎΡ€Ρ€Π΅Π»ΠΈΡ€ΡƒΡŽΡ‰ΠΈΡ… с клиничСской ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒΡŽ. РассмотрСн ΠΌΠ΅ΠΆΠ΄ΡƒΠ½Π°Ρ€ΠΎΠ΄Π½Ρ‹ΠΉ ΠΎΠΏΡ‹Ρ‚ провСдСния клиничСских исслСдований Π΄Π΅Π½Π΄Ρ€ΠΈΡ‚Π½ΠΎ-ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… Π²Π°ΠΊΡ†ΠΈΠ½ ΠΏΡ€ΠΈ Ρ€Π°Π·Π»ΠΈΡ‡Π½Ρ‹Ρ… злокачСствСнных новообразованиях. ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½ ΠΏΠ΅Ρ€Π΅Ρ‡Π΅Π½ΡŒ ΠΏΠΎΠΊΠ°Π·Π°Ρ‚Π΅Π»Π΅ΠΉ качСства ΠΊΠ»Π΅Ρ‚ΠΎΡ‡Π½Ρ‹Ρ… ΠΏΡ€Π΅ΠΏΠ°Ρ€Π°Ρ‚ΠΎΠ² Π½Π° основС соматичСских ΠΊΠ»Π΅Ρ‚ΠΎΠΊ Ρ‡Π΅Π»ΠΎΠ²Π΅ΠΊΠ° для ΠΈΡ… дальнСйшСго использования Π² клиничСской ΠΏΡ€Π°ΠΊΡ‚ΠΈΠΊΠ΅

    Laboratory, numerical and field assessment of the effectiveness of cyclic geomechanical treatment on a tournaisian carbonate reservoir

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    Results are discussed for evaluation of effectiveness of the cyclic geomechanical treatment (CGT) on a Tournaisian carbonate reservoir. Analysis of laboratory experiments performed according to a special program to assess permeability changes for Tournaisian samples under cyclic changes in pore pressure is presented. The main conclusion is the positive selectivity of the CGT: an increase in permeability is observed for samples saturated with hydrocarbons (kerosene) with connate water, and maximal effect is related to the tightest samples. For water-saturated samples, the permeability decreases after the CGT. Thus, the CGT improves the drainage conditions for tight oil-saturated intervals. It is also confirmed that the CGT reduces the fracturing pressure in carbonate reservoirs. Using flow simulations on detailed sector models taking into account the results of laboratory experiments, a possible increase in well productivity index after CGT with different amplitudes of pressure variation was estimated. Results of a pilot CGT study on a well operating a Tournaisian carbonate reservoir are presented, including the interpretation of production logging and well testing. The increase in the well productivity index is estimated at 44-49Β % for liquid and at 21-26Β % for oil, with a more uniform inflow profile after the treatment. The results of the field experiment confirm the conclusions about the mechanisms and features of the CGT obtained from laboratory studies and flow simulations
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