A new approach to water cut forecasting based on results of capacitance resistance modeling

2020 ◽  
Vol 6 (1) ◽  
pp. 192-207 ◽  
Author(s):  
Alexander D. Bekman ◽  
Tatiana A. Pospelova ◽  
Dmitry V. Zelenin
Keyword(s):  
Mathematical Model ◽  
Injection Well ◽  
Adaptation Algorithm ◽  
Injection Wells ◽  
Operational Analysis ◽  
Operating Modes ◽  
Advantages And Disadvantages ◽  
Stage Of Development ◽  
Water Cut ◽  
The Impact

For oil fields that are at a late stage of development, urgent tasks are the operational analysis of the development and optimization of the operating modes of injection wells. The demand for responsiveness often forces one to abandon the use of three-dimensional hydrodynamic models in favor of analytical ones such as CRMP. Using CRMP models allows you to quickly assess the trends in the impact of injection wells on producing wells and build reliable short-term forecasts for fluid production. Supplementing the traditional (single-phase) CRMP model with a water cut model also allows predicting oil production rates for producing wells and expands the capabilities of an operational analysis of the existing development system. In addition, an adequate water cut model allows using the CRMP model to solve the problem of optimizing the operating modes of the injection well stock. This article discusses the main known water cut models used in conjunction with the CRMP model, provides a brief analysis of their advantages and disadvantages. A new authorial mathematical model of water cut (“multi-characteristic model”) is proposed, which allows to establish the role of each injection well in changing the water content of the considered producer. An adaptation algorithm is also described, that is, the selection of unknown model coefficients implemented in Ariadna software (developed by Tyumen Petroleum Research Center LLC). The low computational complexity of the algorithm allows you to quickly simulate areas containing up to several hundred wells. The results of experiments on the use of a new mathematical model on a synthetic model of an oil reservoir are presented. The results of predicting water cut are compared with the results of previously known methods. The restrictions for using the new model, as well as directions for its development are indicated.

EXPERIMENTAL RESEARCH ON COMPRESSION FOAM COOLING DURING ITS DELIVERY AT DIFFERENT AMBIENT TEMPERATURE MODES

2021 ◽  
Vol 4 ◽  
pp. 40-44
Author(s):  
Gumirov A. ◽  
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Low Temperatures ◽  
Empirical Method ◽  
Research Application ◽  
Mass Consumption ◽  
Operating Modes ◽  
Research Findings ◽  
Conducting Research ◽  
The Impact

Purpose. The article describes methodology for conducting research on parameters of compression foam cooling during its delivery through hose-pump systems depending on the operating modes of the foam generating installation. The impact of mass consumption of compression foam on its cooling at low temperatures has been examined. The application of a mathematical model of air-foam mixture movement in hose-pump systems at different temperature modes has been substantiated. Methods. Empirical method-experiment has been used for research. Findings. A number of experiments have been carried out to confirm the developed model of compression foam moving in hose-pump systems at different temperature modes. A mobile installation for generating and delivering compression foam has been used as the object of the research. Inaccuracy in calculations obtained with the help of a mathematical model in comparison with the experimental data is 10% which makes a possible to claim that the model of compression foam moving in hose-pump systems at different temperature modes has been chosen properly. Research application field. According to the obtained data, it is possible to plan means and forces of fire units for extinguishing fires using compression foam at low temperatures. Conclusions. The developed mathematical model of compression foam movement during its delivery through hose-pump systems is confirmed by experimental data. The dependence of mass consumption impact on compression foam cooling when it is delivered through fire hoses at low temperatures has been obtained experimentally.

scholarly journals Advantages and Disadvantages of Signing a Comprehensive Economic and Trade Agreement (CETA) for the Еconomies of the EU and Canada

2019 ◽  
Vol 12 (4) ◽  
pp. 77-81
Author(s):  
P. Yu. Baryshnikov
Keyword(s):  
Trade Agreement ◽  
Mixed Effect ◽  
Economic Relations ◽  
Advantages And Disadvantages ◽  
Multilateral Agreement ◽  
Stage Of Development ◽  
The Government ◽  
Government Of Canada ◽  
The Impact ◽  
The Eu

This article presents an analysis of the main provisions of the Comprehensive Economic and Trade Agreement (CETA) signed by the government of Canada and the European Parliament at the end of 2016. In particular, the author analysed such aspects of the agreement as the abolition of customs tariffs, the introduction of common quality standards, access to the procurement market, modification of the system of investment disputes, etc. According to the results of the study, there was a mixed effect of the agreement for both Canada and the EU. For some sectors of the economies of the participating countries, the implementation of the CETA promises to create exceptional conditions for development, while for others the signing of a multilateral agreement is unprofitable or means losses. It should be noted that at the present stage the pros and cons of the СЕТА can be considered only at the theoretical level. It will be possible to draw objective conclusions about the impact of the multilateral trade agreement on the development of trade and economic relations between the countries only a certain time later after the ratification of the agreement by all parties. At the current stage of development of Canada-EU relations within the framework of the СЕТА, it can be noted that only the dynamic development and further improvement of the mechanisms of the multilateral agreement will make a trade and economic relations between the countries more open and transparent.

scholarly journals Investigation of the influence of the heterogeneous permeability distribution on the oil phase displacement processes

2021 ◽  
Vol 5 (1(61)) ◽  
pp. 33-40
Author(s):  
Miсhail Lubkov ◽  
Oksana Zakharchuk ◽  
Viktoriia Dmytrenko ◽  
Oleksandr Petrash
Keyword(s):  
Finite Element ◽  
Difference Method ◽  
High Reliability ◽  
Oil Field ◽  
Injection Well ◽  
Shear Direction ◽  
Reservoir Pressure ◽  
Filtration Process ◽  
Injection Wells ◽  
The Impact

The object of research is the filtration processes of displacement of the oil phase under the influence of an injection well in a heterogeneous porous medium. It is possible to evaluate and take into account the effect of reservoir heterogeneity on the distribution of reservoir pressure (and, consequently, on the intensity of the filtration process) using numerical modeling of filtration processes based on the piezoelectric equation. To solve the non-stationary anisotropic problem of piezoconductivity, it is proposed to apply the combined finite-element-difference method of M. Lubkov, which makes it possible to take into account the inhomogeneous distribution of permeability inside the anisotropic oil-bearing formation and at its boundaries, and to adequately calculate the distribution of reservoir pressure. The use of the combined finite-element-difference method allows to combine the advantages of the finite-element method and the finite difference method: to model geometrically complex areas, to find the value at any point of the object under study. At the same time, the use of an implicit difference scheme when finding the nodal values of the grid provides high reliability and convergence of the results. The simulation results show that the distribution of the pressure field between the production and injection wells significantly depends on their location, both in the isotropic landslide and in the anisotropic oil-bearing reservoir. It is shown that the distance between the wells of more than 1 km levels out the effectiveness of the impact of the injection well on the oil filtration process. The influence of the permeability of the oil phase in the shear direction dominates the influence of the permeability in the axial directions (affects the pressure decrease by 4–9.5 %). In the case of a landslide-isotropic reservoir, the wells should be located in the shear (diagonal) direction, which will provide the lowest level of drop in the average reservoir pressure (by 4 %). Based on the information obtained, for the effective use of anisotropic low-permeability formations, it is necessary to place production and injection wells in areas with relatively low anisotropy of the formation permeability, especially to avoid places with the presence of landslide permeability of the formation. The location of the wells is important so that, on the one hand, there is no blockage of oil from the side of reduced permeability, and on the other hand, rapid depletion of the formation from the side of increased permeability does not occur. And also the mutual exchange between the production and injection wells did not stop. When placing a system of production and injection wells in anisotropic formations of an oil field, it is necessary to carry out a systematic analysis of the surrounding anisotropy of the formations in order to place them in such a way that would ensure effective dynamics of filtration processes around these wells. Using the method used, it is possible to predict the impact of an injection well on the distribution of reservoir pressure in the reservoir.

The use of data on capillary pressures in the development of deposits in the Middle Ob region

2021 ◽  
pp. 61-72
Author(s):  
I. G. Sabanina ◽  
T. V. Semenova ◽  
Yu. Ya. Bolshakov ◽  
S. V. Vorobjeva
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Oil Field ◽  
Oil Fields ◽  
The West ◽  
Injection Wells ◽  
Stage Of Development ◽  
Urgent Task ◽  
Capillary Pressures ◽  
Water Cut

Currently, most of the oil fields in the West Siberian oil and gas province are in the final stage of development. There is water-cut in production, a decrease in oil production, and the structure of residual reserves deteriorates. The search and application of the most successful scientific methods and technologies for improving oil recovery in the development of fields is quite an urgent task.It should be taken into account that hydrophobic reservoirs are common in the oil fields of Western Siberia, and when applying the method of reservoir flooding, this fact should be taken into account and a more detailed approach should be taken to the study of capillary forces to prevent flooding of productive objects. Despite the good knowledge of the West Siberian megabasin, some fundamental issues of its structure and oil and gas potential remain debatable.The article proposes methods for improving oil recovery of the BS10 formation of the Ust-Balykskoye oil field based on the study of capillary pressures in productive reservoir formations, and provides recommendations for the placement of injection wells. The study of the capillary properties of reservoir rocks will significantly improve the efficiency of exploration and field operations in oil fields.

Understanding Protocol Performance: Impact of Test Performance

2013 ◽  
Vol 24 (10) ◽  
pp. 909-919
Author(s):  
Robert G. Turner
Keyword(s):  
Mathematical Model ◽  
Research Design ◽  
Test Performance ◽  
Negative Impact ◽  
Performance Impact ◽  
Advantages And Disadvantages ◽  
Protocol Performance ◽  
The Individual ◽  
The Impact ◽  
Test Correlation

Background: This is the second of two articles that examine the factors that determine protocol performance. The objective of these articles is to provide a general understanding of protocol performance that can be used to estimate performance, establish limits on performance, decide if a protocol is justified, and ultimately select a protocol. The first article was concerned with protocol criterion and test correlation. It demonstrated the advantages and disadvantages of different criterion when all tests had the same performance. It also examined the impact of increasing test correlation on protocol performance and the characteristics of the different criteria. Purpose: To examine the impact on protocol performance when individual tests in a protocol have different performance. This is evaluated for different criteria and test correlations. The results of the two articles are combined and summarized. Research Design: A mathematical model is used to calculate protocol performance for different protocol criteria and test correlations when there are small to large variations in the performance of individual tests in the protocol. Results: The performance of the individual tests that make up a protocol has a significant impact on the performance of the protocol. As expected, the better the performance of the individual tests, the better the performance of the protocol. Many of the characteristics of the different criteria are relatively independent of the variation in the performance of the individual tests. However, increasing test variation degrades some criteria advantages and causes a new disadvantage to appear. This negative impact increases as test variation increases and as more tests are added to the protocol. Conclusions: Best protocol performance is obtained when individual tests are uncorrelated and have the same performance. In general, the greater the variation in the performance of tests in the protocol, the more detrimental this variation is to protocol performance. Since this negative impact is increased as more tests are added to the protocol, greater test variation indicates using fewer tests in the protocol.

scholarly journals Impact of Sports Wearable Testing Equipment Based on Vision Sensors on the Sports Industry

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Longqiang Chen ◽  
Shaoxiong Yang
Keyword(s):  
Active Role ◽  
Recognition System ◽  
Wearable Devices ◽  
Sensor Data ◽  
Integration Algorithm ◽  
Sports Industry ◽  
Advantages And Disadvantages ◽  
Stage Of Development ◽  
Vision Sensors ◽  
The Impact

Sports wearable monitoring equipment is an intelligent device that collects many physiological signals of the human body through multiple sensors. It has a very active role in promoting data testing in the field of sports. This article is aimed at studying the impact of sports wearable detection devices based on vision sensors on the sports industry and at proposing effective strategies for the development of sports wearable devices in the sports industry. This paper proposes an azimuth integration algorithm based on wearable sensor data. This goal establishes a new feature based on azimuth angle information for a reliable human behavior recognition system based on acceleration data. Based on summarizing and comparing the advantages and disadvantages of existing azimuth conversion algorithms, this paper develops an azimuth code conversion algorithm based on the combination of additional processing and Kalman processing to explore the impact of wearable devices on the sports industry. The experimental results of this article show that in the current sports industry, more than 19.74 million sports wearable testing devices have been put into use normally, which also means that the industry is about to enter a significant stage of development.

scholarly journals A New Dynamic Model for Sealed Coring Saturation Correction in Hydrocarbon Reservoir

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-8
Author(s):  
Bin Tu ◽  
Jie Li
Keyword(s):  
Mathematical Model ◽  
Water Saturation ◽  
Correction Method ◽  
Fluid Viscosity ◽  
Dissolved Gas ◽  
Fractional Flow ◽  
Model Correction ◽  
Advantages And Disadvantages ◽  
Hydrocarbon Reservoir ◽  
The Impact

It is one of the most intuitive methods to analyze the formation of oil and water saturation by sealed coring. But this method is affected by a variety of factors, such as pore volume change, fluid compression, and separation of dissolved gas. In view of the impact of such factors on sealed coring test saturation, there are four kinds of correlation methods currently, namely, comprehensive coefficient correction method, experiment correlation method, mathematical statistics method, and mathematical model correction method, with their own advantages and disadvantages. Based on the analysis of physical change during core lifting process, this paper proposes the mathematical model for dynamic correction of core saturation based on dissolved gas drive filtration theory, multiphase flow fractional flow theory, and corresponding work flow. This method comprehensively considers the impact of relative permeability of three-phase fluid flow, elastic compression nature of fluid and rock, fluid viscosity, volume factor, solution GOR, and other high-pressure PVTs, so it features a wider adaptability, and the accuracy of model correction results satisfies the project requirements. This method provides a reliable basis for the true oil-water saturation of actual reservoir and has an important theoretical and practical significance.

scholarly journals Dynamic Assessment of the Company's Competitiveness, Taking into Account the Implementation of Its Innovative Development Strategy

2020 ◽  
Vol 19 (4) ◽  
pp. 512-542
Author(s):  
V. V. Krivorotov ◽  
◽  
A. V. Kalina ◽  
S. E. Erypalov ◽  
D. I. Kobekina ◽  
...  
Keyword(s):  
Negative Impact ◽  
Dynamic Assessment ◽  
Innovative Activity ◽  
Innovation Activity ◽  
Innovative Development ◽  
Advantages And Disadvantages ◽  
Industrial Enterprises ◽  
Stage Of Development ◽  
Metallurgical Company ◽  
The Impact

Innovative development of domestic enterprises and growth of their competitiveness is the most important task at the present stage of development of the country's economy. The purpose of this study is to develop methodological tools that assess the impact of strategic plans for innovative development of an enterprise on the level of its competitiveness. The hypothesis of the study is that the plans for innovative development of the enterprise have a positive impact on the level of competitiveness of the enterprise. The article shows that in modern conditions one of the main directions of increasing the competitiveness of any company is inextricably linked with the formation and use of innovative development systems at enterprises. An analytical review of the existing methods for evaluating the competitiveness of the enterprise is carried out; their advantages and disadvantages are determined. It is shown that there is currently no single universal approach to such evaluation. As a result, a reasonable choice was made in favor of a methodological approach that evaluates competitiveness in dynamics; the main indicators and algorithms used in this approach are presented. The method of assessing the stability of the competitive position of industrial enterprises based on their innovative activity using a number of innovative indicators and taking into account their possible growth in the financing and implementation of innovative projects is proposed. The competitiveness of the largest Russian Pipe Metallurgical Company in comparison with its leading domestic competitors in the period 2017-2019 was evaluated; the main problems and weaknesses in the company's activities that have a negative impact on its competitiveness are identified. An assessment of the innovative activity of the Pipe Metallurgical Company is performed, which shows that the company currently adheres to a strategy based on the introduction of improving innovations. Modeling of the dependence of the level of the competitiveness of the company on the indicators of its innovation activity is performed; the indicators that have the strongest impact are identified, namely: the coefficient of intellectual property security, the coefficient of innovative growth, and the coefficient of development of new products. An example of the implementation of an event aimed at increasing the company's innovation activity indicators and related to the commissioning of unique research equipment for the development of new threaded connections for pipes is given. Based on the projected outcomes of the event, the forecast level of competitiveness of the Pipe Metallurgical Company for the period up to the end of 2020 was determined.

scholarly journals Rocket tracking impact point prediction using α-β, standard Kalman, extended, Kalman, and unscented Kalman filters: a comparative analysis

2020 ◽  
Vol 9 (3) ◽  
pp. e42932022
Author(s):  
José Alano Peres de Abreu ◽  
Roberto Célio Limão de Oliveira ◽  
João Viana da Fonseca Neto
Keyword(s):  
Mathematical Model ◽  
Kalman Filter ◽  
Comparative Analysis ◽  
Unscented Kalman Filter ◽  
Target Position ◽  
Accurate Information ◽  
Impact Point ◽  
Advantages And Disadvantages ◽  
Tracking Algorithms ◽  
The Impact

Accurate information about the impact point (IP) of a suborbital rocket on Earth’s surface during a launch is an important requirement for range safety operations. Four different estimators, i.e., the α-β filter, standard Kalman filter (SKF), extended Kalman filter (EKF), and unscented Kalman filter (UKF), are considered for the suborbital rocket tracking problem, whose data are used specifically for improving the accuracy of the IP prediction (IPP) of these vehicles. This paper presents a comparative analysis between the results of the estimators. Rocket flight data are discussed to demonstrate the advantages and disadvantages of the estimators and to determine the inherent limitations in predicting the aerodynamic effects found in certain flight situations. We discuss the appropriate mathematical model of a filter capable of running the real-time algorithm for the estimation of target position and velocity. This work uses actual data from a radar sensor to evaluate the tracking algorithms. We insert the filter result into the mathematical model developed to predict the rocket IP on Earth's surface. The main goal of this study is to evaluate the performance of four different estimators when specifically applied for the improvement of the IPP of suborbital rockets. It is demonstrated that the UKF outperforms all other tracking algorithms in terms of the accuracy and robustness of IP estimation.

scholarly journals Gas Lift Performance of Some Horizontal Wells in Ahdeb Oil Field

2021 ◽  
Vol 7 (3) ◽  
pp. 66-74
Author(s):  
Dr. Kareem A. Alwan ◽  
Dr. Maha R. Abdulameer ◽  
Mohammed Falih
Keyword(s):  
Water Injection ◽  
Injection Pressure ◽  
Oil Field ◽  
Reservoir Pressure ◽  
Injection Wells ◽  
Artificial Lift ◽  
Electrical Submersible Pumps ◽  
Optimal Injection ◽  
Water Cut ◽  
The Impact

Ahdeb is one of the Iraqi oil fields, its crude characterized by medium API (22.5-28.9) and highly reservoir pressure depletion from Khasib formation due to lack of water drive. This makes it difficult to produce economic oil rates. Therefore, many water injection wells were drilled by the operators to maintain the reservoir pressure during production. In addition to that, electrical submersible pumps (ESP) were used in some productive wells. This study suggests exploitation of gas associated with oil production to be recycled to lift oil as a substitute for the ESP .The work in this study includes using PIPSIM software to build a model of four studied productive wells (AD1-11-2H, AD2-15-2H, AD4-13-3H, A4-19-1H) after choosing the suited correlation for each well. According to the statistical results, Mukherjee & Brill correlation is the best option for all wells. The use of PIPESIM software include determining artificial lift performance to determine the optimum amount of gas injected, optimum injection pressure as well as the optimum injection depth and knowing the impact of these factors on production, as well as the determination of the optimal injection conditions when water cut changes. According to the current circumstances of the wells, the depth optimized for injection is the maximum allowable depth of injection which is deeper than the packer by 100 ft and the amount of injection gas is (1.5, 1, 1, and 1) MMscf/day for wells (AD2-11-2H, AD2-15-2H, AD4-13-3H, and AD4-19-2H) sequentially and injection pressure (2050, 2050, 2050, and 2000) psi for wells (AD2-11-2H, AD2-15-2H, AD4-13-3H, and AD4-19-2H) sequentially.  

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