scholarly journals Automation of technological processes in the examination of core samples

2021 ◽  
Vol 2094 (5) ◽  
pp. 052006
Author(s):  
A V Morev
Keyword(s):  
Water Saturation ◽  
Laboratory Practice ◽  
Full Size ◽  
Technological Processes ◽  
Core Samples ◽  
Important Direction ◽  
Methodological Approaches

Abstract Currently, there are quite serious problems in the methodology of conducting petrophysical studies. These problems have a significant impact on the process profitability of obtaining analysis results. Improving the efficiency of laboratory analyses is an important direction towards enhancement of the methodological approaches used in the laboratory practice. Automation of the process of recording the volume of water displaced from the chamber of a group capillarimeter while determining the water saturation of standard and full-size core samples is analyzed.

scholarly journals Petrophysical Properties Estimation of Euphrates Reservoir in Qayyarah Oil Field Using Core and Well Log Data

2021 ◽  
Vol 54 (2E) ◽  
pp. 186-197
Author(s):  
Maan Al-Majid
Keyword(s):  
Water Saturation ◽  
Oil Field ◽  
Oil Reservoirs ◽  
Coefficient Of Determination ◽  
Well Log ◽  
Secondary Porosity ◽  
Log Data ◽  
The Core ◽  
Core Samples ◽  
True Resistivity

The Early Miocene Euphrates Formation is characterized by its oil importance in the Qayyarah oil field and its neighboring fields. This study relied on the core and log data analyses of two wells in the Qayyarah oil field. According to the cross-plot’s information, the Euphrates Formation is mainly composed of dolomite with varying proportions of limestone and shale. Various measurements to calculate the porosity, permeability, and water saturation on the core samples were made at different depths in the two studied wells Qy-54 and Qy-55. A relationship between water saturation and capillary pressure has been plotted for some core samples to predict sites of normal compaction in the formation. The line regression for this relationship was considered as a function of the ratio of large voids to the total volume of voids in the sample. The coefficient of determination parameter was used in estimating the amount of homogeneity in the sizes of the voids, as it was observed to increase significantly at the sites of shale. After dividing the formation into several zones, the well log data were analyzed to predict the locations of oil presence in both wells. The significance of the negative secondary porosity in detecting the hydrocarbon sites in the Euphrates Formation was deduced by its correspondence with the large increase in the true resistivity values in both wells. More than 90% of the formation parts represent reservoir rocks in both wells, but only about 75% of them are oil reservoirs in the well Qy-54 and nearly 50% of them are oil reservoirs in the well Qy-55.

Dielectric properties of reservoir rocks at ultra‐high frequencies

Geophysics ◽  
1985 ◽  
Vol 50 (4) ◽  
pp. 692-704 ◽  
Author(s):  
L. C. Shen ◽  
W. C. Savre ◽  
J. M. Price ◽  
K. Athavale
Keyword(s):  
Dielectric Permittivity ◽  
Water Saturation ◽  
Limited Range ◽  
Relative Dielectric Permittivity ◽  
Chemical Flooding ◽  
Water Steam ◽  
Oil Saturation ◽  
High Frequencies ◽  
Core Samples ◽  
Resistivity Logs

Conventional resistivity and induction tools measure the electrical conductivity of the formation. Interpretation of these logs is difficult in situations where the formation water resistivity is variable or unknown as a result, for example, of water, steam, or chemical flooding. Recent introduction of several dielectric tools offers a new technique in well logging. These sondes measure the relative dielectric permittivity of the formation at very‐high and ultra‐high radio frequencies. Because water has a much higher relative dielectric permittivity (about 80) than oil (about 2) or gas (about 1), the dielectric tool can distinguish hydrocarbon‐bearing zones from water‐bearing zones even when the formation fluid is nonconducting. However, in order to quantify the oil saturation in the formation, one needs an accurate formula that can relate the measured relative dielectric permittivity of the rock to the oil saturation in the rock. Present interpretation formulas have only a limited range of applicability. Therefore, our study was undertaken to answer the following question. Whereas Archie’s relationship relates the resistivity to oil saturation for resistivity logs, what is the corresponding saturation formula for dielectric logs? The approach we take is to measure core samples and obtain a broad data base from which we derive an interpretation formula. This paper describes how we developed a laboratory technique to measure reservoir core samples at ultra‐high frequencies, how the data are processed, and how an interpretation formula for water saturation is found. The data are obtained in the frequency range 800 to 1 200 megahertz (MHz), with the porosity of the rock ranging from 6 to 42 percent. The rocks are saturated with NaCl solution with salinity ranging from 0 to 182 000 ppm. Our study enabled us to develop a new and accurate interpretation technique for the dielectric tool called EPT (Electromagnetic Propagation Tool) manufactured by Schlumberger.

scholarly journals THE INFLUENCE OF ROCK LITHOGENESIS TYPES ON POROSITY AND PERMEABILITY (THE CASE OF PERMOCARBONIFEROUS DEPOSIT OF THE USINSKOYE FIELD)

2020 ◽  
Vol 20 (2) ◽  
pp. 104-114
Author(s):  
Nikita A. Popov ◽  
◽  
Ivan S. Putilov ◽  
Anastasiia A. Guliaeva ◽  
Ekaterina E. Vinokurova ◽  
...  
Keyword(s):  
Physical Parameters ◽  
Void Space ◽  
Reservoir Properties ◽  
Full Size ◽  
The Core ◽  
Core Samples ◽  
Porosity And Permeability ◽  
Research Findings ◽  
Influence Of Properties ◽  
First Time

The paper analyzes a methodology aimed at differentiation of porosity, permeability and petrographic properties depending on facies attributes. Based on the Dunham classification, we offer in-depth studies of the influence of rock fabric, including full-size core samples, on changes in porosity and permeability. The work deals with the Permo-Carboniferous deposit of the Usinskoye field. Reservoir properties of the considered strata are highly heterogeneous. Along with highly porous and cavernous rocks, there are low porous and fractured varieties in the section, which refer to rocks of various lithological compositions. The porosity and permeability properties were analysed for more than 9,000 standard core samples and approximately 1,000 full-size core samples, taking into account the scale factor and including microfractures, large caverns and rock matrix, commensurable with the sample sizes.The analysis of the maximum variation range is of particular importance for structurally complex carbonate reservoirs. Furthermore, based on the conducted lithologic, petrographic and petrophysical studies, the authors identified four types of reservoirs and eight different types of lithogenesis, as well as estimated geological and physical parameters for each of them. Based on the cumulative correlation plots, four zones of heterogeneity were identified. They are subject to the influence of properties of the core samples of different lithogenesis types. This is the first time that the influence of various petrotypes/lithotypes on changes in the reservoir porosity and permeability has been studied for the Usinskoye field based on the petrographic and petrophysical research findings. All the conducted experiments show that the rocks of the Permo-Carboniferous deposit of the Usinskoye field are extremely heterogeneous in their permeability properties that vary much. Thus, it is necessary to differentiate the core-to-core petrophysical correlations depending on a void space fabric and lithology of rocks.

scholarly journals Methodological approaches to determining the effectiveness of innovative development of enterprises

2020 ◽  
pp. 72-79
Author(s):  
Vitalii Voloshchuk
Keyword(s):  
System Analysis ◽  
The State ◽  
Innovative Activity ◽  
Innovation Activity ◽  
Innovative Development ◽  
Resource Saving ◽  
Technological Processes ◽  
Industrial Enterprises ◽  
Modern Development ◽  
Methodological Approaches

Purpose. The aim of the article is generalization of theoretical and methodological approaches to determining the effectiveness of innovative activities of the enterprise, the study of requirements, criteria and evaluation indicators. Methodology of research. General scientific and special methods are used in the course of research, in particular: monographic, analysis and synthesis – at research of concept of efficiency of innovative activity and approaches to its estimation; system analysis – in determining the state of innovation in industrial enterprises; tabular – for visual presentation of the analysed statistical data; abstract and logical – in determining the possible areas of innovative activity of enterprises of different sizes. Findings. There is an unstable trend of increasing the share of industrial enterprises that have implemented innovations (products and / or technological processes) in the total number of industrial enterprises, and an increase in the cost of innovative activity for the analysed period. It is determined that the best result is observed when implementing new or significantly improved low-waste, resource-saving technological processes, which indicates the dominance of process innovations. It is proved that the main source of funding for innovative activity is the own funds of enterprises, whose costs are growing annually and whose share is 87.7%. At the same time, most funds were spent on the purchase of machinery, software and equipment, iюeю on the renewal of material and technical base and modernization. There is an increase in the number of profitable enterprises, which indicates an increase in efficiency, as well as an increase in operating profitability and all activities of enterprises, but much higher rates are typical for micro and small enterprises, indicating their higher innovation activity and efficiency of modern development. Originality. Methodological approaches to determining the effectiveness of innovative development of enterprises have been improved, which, unlike existing ones, are based on incurred costs for innovation, volumes and sources of funding, reinvestment of profits, innovation activity, share of innovative products and increase profitability to substantiate possible directions of innovative development and implementation of measures to implement the results of research and development, taking into account the specifics and size of the business entities, the state and dynamics of the internal and external environment. Practical value. The use of generalized systematized methodological approaches to determining the effectiveness of innovative development of enterprises will allow to assess the results of the enterprise in each area of innovation based on the implemented innovative solutions in the current period and in the medium and long term. Key words: innovations, efficiency, technologies, products, development, enterprise, attractiveness, results, methodology.

scholarly journals Voluntary national SDG reviews as a new reporting institution in a globalized society

2021 ◽  
Vol 129 ◽  
pp. 10009
Author(s):  
V. Novikov Andrew ◽  
Sh. Urazgaliev Vladimir ◽  
A. Menshikova Galina ◽  
N. Soshnev Alexander
Keyword(s):  
New Technology ◽  
General Scheme ◽  
Value Added ◽  
The Third ◽  
Institutional Approach ◽  
Management Technology ◽  
New Type ◽  
Important Direction ◽  
New Methodologies ◽  
Methodological Approaches

Research background: Having recognized the SDGs as the most important direction of globalization processes’ implementation, we point out that assessing the results of world progress in this direction is important both in terms of assessing its dynamics and as a new technology of global governance. Assessment (both as an institution and as a management technology) is a new type of analytical and coordination interactions between countries, which is just beginning to emerge. Purpose of the article: The publication has three goals. The first is to present Voluntary national SDG reviews (VNRs) as an emerging institution for assessing and managing of global development. The second is to describe methodological approaches of their assessment, presenting them as a continuous improvement of methodology and methods that reflect new requirements for the VNRs analyses. The third is to assess the VNR of the RF (Russian Federation) - 2020, taking into account official and unofficial judgments, views from within and external experts. Methods: The publication as a whole follows an institutional approach. It provides a comparative generalization of methodological approaches to the VNRs assessment, presents expert judgments that allow to outline the compliance of VNR RF-2020 with the new valuation principles Findings & Value added:: The publication will present a general scheme of VNR institutional understanding, a comparative analysis of traditional and new methodologies for their assessment and will propose systematic (comprehensive) assessment of VNR RF-2020.

An Approach for Exploring the Application of the Flow Zone Index Concept in Describing Petrophysical Properties Using Available SCAL Data Relative Permeability

2021 ◽  
Author(s):  
Efeoghene Enaworu ◽  
Tim Pritchard ◽  
Sarah J. Davies
Keyword(s):  
Relative Permeability ◽  
Water Saturation ◽  
Petrophysical Properties ◽  
Residual Oil ◽  
Flow Zone ◽  
Oil Saturation ◽  
Residual Oil Saturation ◽  
Core Samples ◽  
Irreducible Water Saturation ◽  
Permeability Data

Abstract This paper describes a unique approach for exploring the Flow Zone Index (FZI) concept using available relative permeability data. It proposes an innovative routine for relating the FZI parameter to saturation end-points of relative permeability data and produces a better model for relative permeability curves. In addition, this paper shows distinct wettabilities for various core samples and validated functions between FZI and residual oil saturation (Sor), irreducible water saturation (Swi), maximum oil allowed to flow (Kro, max), maximum water allowed to flow (Krw, max),and mobile/recoverable oil (100-Swi-Sor). The wettability of the core samples were defined using cross-plots of relative permeability of oil (Kro), relative permeability of water (Krw), and water saturation (Sw). After classifying the data sets into their respective wettabilities based on these criteria, a stepwise non-linear regression analysis was undertaken to develop realistic correlations between the FZI parameter, initial water saturation and end-point relative permeability parameters. In addition, a correlation using Corey's type generalised model was developed using relative permeability data, with new power law constants and well defined curves. Other parameters, including Sor, Swi, Kro, max, Krw,max and mobile oil, were plotted against FZI and correlations developed for them showed unique well behaved plots with the exception of the Sor plot. A possible theory to explain this unexpected behaviour of the FZI Vs Sor cross plot was noted and discussed. These derived functions and established relationships between the FZI term and other petrophysical parameters such as permeability, porosity, water saturation, relative permeability and residual oil saturation can be applied to other wells or reservoir models where these key parameters are already known or unknown. These distinctive established correlations could be employed in the proper characterization of a reservoir as well as predicting and ground truthing petrophysical properties.

Support for small enterprise as a factor of the development of the national economy

2019 ◽  
pp. 73-78
Author(s):  
Yaryna Tanchak ◽  
Nataliya Drebot ◽  
Marta Mykolyshyn
Keyword(s):  
Competitive Ability ◽  
Methodological Approach ◽  
Business Development ◽  
The State ◽  
Small Enterprise ◽  
Competitive Environment ◽  
Structural Elements ◽  
Analysis And Evaluation ◽  
Important Direction ◽  
Methodological Approaches

The regions’ position in national competitive ability and the rankings of a country in global competitive environment is defined by innovative vector of economy development, the level of economic entities’ innovative activity, availability of fundamental and applied developments, technology transfer and integration of science and production, etc. Therefore, the issues of maintaining the development of innovative entrepreneurship in a region as an important direction of economy’s competitive ability at internal and external markets are the most relevant. The paper aims to develop a methodological approach to evaluation of innovative entrepreneurship development in the regions of a country. A review of existing methodological approaches to the analysis and evaluation of the development of innovation entrepreneurship in the regions of the state is outlined. The author's vision of the methodology of analysis and evaluation of the development of innovation entrepreneurship of the regions of the state is presented. The proposed methodology contains the following structural elements: the choice of the objective, object and tasks of the assessment of the development of innovative entrepreneurship in the region, the choice of methods for assessing the development of innovative entrepreneurship in the region, the choice of directions for assessing the development of innovative entrepreneurship in the region (assessment of the stages of innovation business development in the region, assessment of forms of integration of innovation entrepreneurship, the estimation of entrepreneurial income), the choice of a system of indicators for assessing the development of innovative entrepreneurship in the region, a comprehensive assessment of the level of innovation entrepreneurship in the region.

Electroactivation of media in agricultural technologies as a way to intensify production processes

2021 ◽  
Author(s):  
Nikolay Ksenz ◽  
Boris Cheba ◽  
Igor' Yudaev
Keyword(s):  
Agricultural Production ◽  
Experimental Studies ◽  
Agricultural Products ◽  
Electrical Activation ◽  
Agricultural Technologies ◽  
Technological Processes ◽  
Operating Modes ◽  
Production Processes ◽  
Methodological Approaches ◽  
Direct Use

The monograph examines the scientific foundations, methodological approaches and applied aspects of the electroactivation of air and water solutions for their direct use in various technological processes of agricultural production. The results of numerous experimental studies of the authors and other researchers conducted over several years to substantiate the parameters and operating modes of electrotechnological installations for the electrical activation of various media are presented. It is intended for undergraduates, postgraduates, engineers and researchers who study and deal with issues of electrical technology, in particular, the development of electroactivators and the use of electroactivation processes in various areas of agricultural production and processing of agricultural products.

Predicting Effective Permeability to Oil in Sandstone and Carbonate Reservoirs From Well-Logging Data

2011 ◽  
Vol 14 (06) ◽  
pp. 750-762 ◽  
Author(s):  
V.. Anand ◽  
R.. Freedman ◽  
S.. Crary ◽  
C.C.. C. Minh ◽  
R.L.. L. Terry
Keyword(s):  
Effective Permeability ◽  
Water Saturation ◽  
Well Logging ◽  
Empirical Equations ◽  
Laboratory Measurements ◽  
Mapping Functions ◽  
Core Samples ◽  
Irreducible Water Saturation ◽  
Model Independent ◽  
Carbonate Formations

Summary This paper discusses a new method for predicting continuous logs of effective permeability to oil in sandstone and carbonate formations from well-logging data. This important problem in formation evaluation has remained previously unsolved because the conventional approach used to predict reservoir properties from well-log data relies on simple empirical equations and idealized models of reservoir rocks. The use of such equations and models to predict a complex reservoir property (e.g., effective permeability) can result in an inaccurate representation of the formation. This paper shows that accurate values of effective permeability to oil can be predicted using model-independent mapping functions constructed from Gaussian radial basis functions (RBFs), which can be derived from a laboratory database of measurements on partially saturated core samples. The mapping functions replace the empirical equations used in the conventional approach and are model-independent representations of the database measurements. Once the mapping functions are constructed from the database, there are no adjustable parameters. In this study, mapping functions for sandstones and carbonates were derived from a worldwide database of laboratory measurements made on 79 sandstone and 25 carbonate core samples. The laboratory measurements available on each sample included irreducible water saturation, effective permeability to oil, porosity, and nuclear-magnetic-resonance (NMR) T2 distributions. The mapping functions can be used to predict effective permeability to oil of reservoirs at irreducible water saturation from input measurements of porosity, T2 distribution, irreducible water saturation, and knowledge of rock lithology (e.g., sandstone or carbonate). The methodology for deriving the mapping functions is explained in detail. The mapping functions are applied to the database itself to show the accuracy of the effective-permeability predictions on core samples. The method is also applied to log data from both sandstone and carbonate formations in three wells from different parts of the world. The predicted effective permeabilities to oil are shown to be consistent with oil mobilities measured in the formations by fluid-sampling tools.

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