bluuebunny/crossref_metadata_2025_split huggingface dataset:
ON THE ISSUE OF THE POTENTIAL OF TOOLS AND SOURCES OF FINANCING FOR CONSTRUCTION INDUSTRY ENTERPRISES
Authors: Дудин Г.В. , Владимирова О.Н. 
Published: October 2022

Представлен краткий обзор традиционных способов и механизмов финансового обеспечения. Определены роль и место строительной отрасли, дана характеристика ICO и проектного финансирования с применением эскроу-счетов при реализации проектов по жилищному строительству. Возможность применения новых инструментов проиллюстрирована практикой реализации на общероссийском и региональном уровнях.
The article provides a brief overview of traditional methods and mechanisms used in financial security. Defining the role and place of the construction industry, the authors characterize ICO and project financing with the use of escrow accounts in the implementation of housing construction projects. The possibility of using new tools is illustrated by the practice of implementation both at the national and regional levels.
QUESTIONS OF THEORY AND PRA CTICE OF ASSESSING THE FINANCIAL STABILITY OF THE COMPANY
Authors: Федоров Е.С. 
Published: October 2022

Освещаются проблемы оценки финансовой устойчивости компаний, определению факторов влияния, в том числе в условиях новой экономической реальности. Анализ финансовой устойчивости проведен на примере ПАО «КАМАЗ», занимающего лидирующее положение на российском рынке грузовых автомобилей. В результате исследования дан прогноз уровня финансовой устойчивости анализируемой компании. Отмечается, что в условиях антироссийских санкций обостряются проблемы экономической безопасности страны в целом и отдельных компаний, что влечет за собой изменения и негативные тенденции в механизмах внешнеэкономических связей, финансирования хозяйственной деятельности, производства и сбыта производимой продукции, выстраивания логистических цепочек.
The article is devoted to the problems of assessing the financial stability of companies, determining the factors of influence, including in the conditions of the new economic reality. The analysis of financial stability was carried out on the example of PJSC KAMAZ, which occupies a leading position in the Russian truck market. As a result of the study, a forecast of the level of financial stability of the analyzed company is given. The relevance of the research topic lies in the fact that in the conditions of anti-Russian sanctions, the problems of economic security of the country as a whole and individual companies are becoming more acute, which entails changes and negative trends in the mechanisms of foreign economic relations, financing of economic activities, production and marketing of manufactured products, building logistics chains.
PERSPECTIVE SYSTEM OF ENFORCEMENT PROCEEDING IN SOCIALLY SIGNIFICANT CASES
Authors: Дроценко Л.Д. 
Published: October 2022

Проведен анализ деятельности Федеральной службы судебных приставов-исполнителей с учетом особой социальной значимости ряда исполнительных производств. Кроме того, раскрыты пути и вопросы совершенствования механизмов принудительного исполнения конкретно в Тамбовской области.
The analysis of the activities of the Federal Bailiff Service is carried out, taking into account the special social significance of a number of enforcement proceedings. In addition, the ways and issues of improving enforcement mechanisms specifically in the Tambov region are disclosed.
FACTOR ANALYSIS ON WEATHER ELEMENTS THAT AFFECT MARINE TRANSPORTATION ACTIVITIES AT TANJUNG PERAK PORT WITH THE PRINCIPAL COMPONENT ANALYSIS METHOD
Authors: Sunarmi Nani , Aisyah Weika Muchlis , Hasanah Uswatin , Setiorini Ayu , Fitria Nur Lailatul , Wati Frisca Karisma 
Published: October 2022

This research’s aim is to analyze weather elements that affect marine transportation activities at Tanjung Perak Port. The data used in this study is secondary data obtained from Meteorology, Climatology and Geophysics Agency of the Republic of Indonesia. The data used is weather element record from the meteorological station in Perak II Surabaya for the 2017-2021 period which includes variables of sunlight exposure, precipitation, humidity, wind direction, air pressure, wind speed, and air temperature. The method used is the Principal Component Analysis method. Based on the test, it is found that all weather variables can be analyzed using the Principal Component Analysis Method. The weather element variables formed 2 components which have Initial Eigenvalues 1. The first component consists of Air humidity, Precipitation, Sunlight exposure, and Air Pressure. The second component consists of Air Temperature, Wind Direction, and Wind Speed. Based on the two components formed, the first component is the most dominant component element that affects marine transportation activities at Tanjung Perak Port for the 2017-2021 period with Initial Eigenvalues of 3,681. And air pressure is the most dominant weather element with the loading value based on the Principal Component Analysis method is 0,867.
Evaluation of the Discrimination between Beta-Thalassemia Trait and Iron Deficiency Anemia Using Different Indexes
Authors: Elshaikh Rabab Hassan , Amir Rawaa , Ahmeide Awadia , Mohamedahmed Khalid Abdelsamea , Alfeel Ayman Hussien , Higazi Hassan , Hussein Salah Eldin Omar , Babker Asaad MA 
Published: October 2022

Background: Iron deficiency anemia (IDA) and beta-thalassemia trait (BTT) are the most common types of microcytic hypochromic anemias. The aim of this study was to evaluate the reliability of different RBC indices for discrimination between IDA and BTT in Sudanese patients. Methods and Results: This cross-sectional laboratory-based study was conducted among 200 patients (100 patients suffering from BTT and 100 from IDA) who attended the public health hospitals of Khartoum State (Sudan), from Jan 2021 to Feb 2022. The diagnosis of BTT was based on CBC and hemoglobin electrophoresis, and was confirmed by PCR. The diagnosis of IDA was based on complete blood count, reduced serum iron levels, and ferritin levels. Pregnant women, patients who had received a blood transfusion within three months of the study, and patients with thalassemia coexisting with IDA or other hemoglobinopathies were excluded from the study. A series of red blood cell indices were analyzed to differentiate IDA and BTT. The sensitivity, specificity, positive predictive value, negative predictive value, and Youden index (J) were calculated for each index.	In BTT and IDA patients, mean values of Hb, hematocrit, and mean corpuscular volume were 10.9g/dL, 33.96%, 59.11fL, and 8.5g/dL, 26%, 68fL, respectively. All RBC indices were decreased in BTT and IDA. Mean RBC count was increased in BTT while showing normal values in IDA. In BTT patients, hemoglobin electrophoresis showed high HbA2 (6.4%) and HbF (1.95%) but a decreased HbA (78.2%). Conclusion: The best discrimination index according to J was Mentzer index (0.85), followed by Sidrah index (0.83), Ehsani index (0.81), RBC count (0.80), RDWI (0.79), Green and King index (0.76), MDHL (o.76), Srivastava index (o.76), and England and Fraser index (0.7). The lowest J was presented in Ricerca index (0.45), Shine and Lal index (0.01), and MCHD (0).
An Innovative Solution for Sour Service Offshore Pipeline Design Utilizing Multiphase Transient Simulation Modelling and Topsides Sour Gas Treatment Selections
Authors: Awang Bakar Dyg Amalina Azyyati , Mustaffa Norlelawati , M Norpiah Rohaizad , M Nazori Qurratuaini , Mukhtar Nur Izyan , Jamil Zurina , Rahman Nurain 
Published: October 2022

Abstract
An offshore gas field uses a membrane acid gas removal unit (AGRU) to remove H2S from the sales gas and condensate stream to meet low specification and operate reliably. A stringent pre-treatment specification is a must to ensure reliability and integrity of the system. With high H2S concentration in condensate from the pre-treatment regeneration cycle, it is imperative to treat both gas and condensate stream to meet gas sales specification. This paper covers process engineering and flow assurance design implemented for gas and condensate H2S removal system and determining sour service operating envelope necessary for pipeline material selection utilizing multiphase transient simulation modelling.
A Simplified Approach to the Analysis of Commingled Wells Whose Layers Have Contrasting Skins
Authors: Last Nicholas Charles , Jongkittinarukorn Kittiphong 
Published: October 2022

Abstract
It has been well documented in the literature that commingled wells in which the different layers have different levels of formation damage – also known as skin – yield anomalous values of formation transmissibility (kh) when they are tested. Specifically, the apparent transmissibility resulting from pressure transient analysis of such wells is typically lower than the arithmetical sum of the transmissibilities of the individual layers. The objective of this study is to present a simple method to quantify this kh reduction effect that is applicable to cases with unlimited numbers of layers that may have different layer pressures as well as different skins.
The methodology starts with the quantification of each layer's productivity index (J), as a function of its kh and skin, during transient inflow conditions. During this transient period, J is not constant but decreases with time, and the apparent kh of the well is then calculated as a function of the evolution with time of the productivity indices of the individual layers. The method is applied to cases where layer skins are different but initial layer pressures are the same, as well as to cases where both skins and pressures differ between layers. The method is then extended again to the case of stabilized inflow conditions, at which time J is conventionally considered to be no longer changing.
The outcome of the study is a simple equation that allows the apparent transmissibility of the commingled well to be calculated, for any number of layers with differing pressures and skins, under transient or stabilized inflow conditions. The quantification of the apparent transmissibility then allows the apparent total-well skin to be easily calculated. It is shown that, for certain combinations of layer skins and layer pressures, the transmissibility reduction effect is significantly smaller than expected and, in some circumstances, might not be observed at all. This result is at odds with the current understanding as set out elsewhere in the literature.
The results of this study point towards alternatives to the conventional methods that are used for testing and analyzing commingled wells, and also have implications for the design of well stimulation programs.
Evaluating In-Situ Gelation Property for Conformance Improvement
Authors: Wang Jinxun , AlSofi Abdulkareem M. , Alzahid Yara A. , Boqmi Abdullah M. 
Published: October 2022

Abstract
Gel-based deep conformance control is a potential method for improving sweep efficiency and facilitating contact with the remaining oil in heterogeneous reservoirs. When using an in-situ gelling system for in-depth treatment, gel strength gradually increases during and after the gel placement in reservoir. Understanding the in-situ gelation properties is essential for screening reliable gelling systems to achieve successful field treatment results. In this study, we performed in-situ gelation evaluations on an organically crosslinked polymer gel system at 95°C. The gel consisted of a low molecular weight polyacrylamide polymer and a polyethylenimine (PEI) crosslinker. Bulk gel properties were assessed through bottle tests and rheological measurements. Results showed that the gelation time of the studied gel system can reach up to 10 days at 95°C. The oscillatory measurements demonstrated the dominance of its elastic nature and remarkable stretch ability. This indicated the potential of the studied organically cross-linked gel for deep conformance improvement applications. Coreflooding experiments of both the bidirectional displacement and continuous injection were conducted for in-situ gelation assessment. In the bidirectional displacement test, the polymer solution was alternately injected from both ends of a three-plug composite core with gel pre-placed in the middle plug. In the continuous injection test, a slug of gel was kept at dynamic flow condition in a slim tube by continuously injecting the polymer solution. The pressure responses from these displacement tests were used to assess the in-situ gelation behavior. Results showed that the in-situ gelation times from both tests were almost the same for a same gel. The in-situ gelation time from the displacement tests also corresponded very well with the transition time from moderately flowing gel to strong gel observed in the bottle test. This demonstrates that both displacement methods can be used to effectively evaluate the in-situ gelation property, and the conventional bottle test can be calibrated as a very efficient way to assess in situ gel performance.
Analytical and Experimental Study of Oil/water Emulsion in Multi Stage Electric Submersible Pump
Authors: Ridlah Muhammad Rasyid , Zhu Haiwen , Zhang Hong-Quan 
Published: October 2022

Abstract
The non-Newtonian behavior of oil/water emulsion in the ESP stage is still not well understood. The industry relies on existing empirical correlations, which only valid for production pipelines without considering the effect of shear force acting on the system. This paper will present the analytical modeling of emulsion rheology in the ESP stage and its effect on ESP boosting pressure. An extensive experimental data set validates the analytical model accuracy.
The Brinkman empirical correlation is the baseline of the analytical model development. Emulsion rheology in the ESP stage depends on many factors. Dimensionless analysis by the Buckingham-Phi theorem indicates that at least three parameters play an essential role in the emulsion rheology at the pump stage. Those parameters are concatenated and applied as the modified function of Brinkman empirical correlation. In addition, the pump boosting pressure performance observed experimentally to study the emulsion rheology effect at the ESP. More than a thousand experiment data points employed to test the proposed model, and its comparison is studied statistically.
The dimensional analysis prevails that the turbulence effect at the stage condition reflected by the Reynolds number, the droplet size effect represented by the Weber number and the Strouhal numbers relates to the shearing effect due to impeller rotation. The analytical model and experiment perform with two different oil viscosity, 45 cp and 70 cp. The results reveal that the higher oil viscosity reaches the inversion point at a lower water fraction since the turbulence decreases with higher oil viscosity. The emulsion rheology from the experiment result shows a significant increase of emulsion viscosity at water fraction close to the inversion point since the increase of hydrodynamic forces due to a higher number of water droplets. The emulsion rheology model aligns with the experiment results for the inversion point at around 35% and 32% water-fraction, respectively. The emulsion rheology model shows a good agreement with the experimental data with a 15% standard deviation of relative error. Increasing water fraction up to the inversion point deteriorates pump boosting pressure since the high friction loss occurs due to higher emulsion viscosity. Nevertheless, as the water fraction passes theinversion point, the boosting pressure starts to rebound as the water turns into the continuous phase. The formation of oil/water emulsion in the ESP is inevitable during production operation and consequently affects the pump boosting pressure. The inversion point phenomena occur at a different range of water fractions for different oil viscosity. A better understanding of emulsion rheology at the pump stage will lead to an accurate artificial lift design and eventually avoid operation failure during production well operation.
The Practical Design of a Carbon Storage Injection Well Completion Using In-Line Flow Control Devices to Maintain Injection Stability
Authors: Konopczynski Michael Robert , Petitt Anna Helene 
Published: October 2022

Abstract
While depleted oil and gas fields can provide important storage capacity for Carbon Capture and Storage (CCS), injection of carbon dioxide into extremely pressure depleted hydrocarbon fields can be problematic due to the phase change of CO2 that can cause flow instability and result in adverse physical phenomena, such as the cooling associated with the latent heat of vaporization and Joule-Thomson cooling which could damage the completion equipment, reduce the hydrostatic head of CO2 and make it difficult to inject carbon dioxide.
Thus far, most completion solutions to this problem have focused on multi-string designs, either parallel or concentric, using flow conduit friction to maintain sufficient back pressure to prevent CO2 flashing. These methods can restrict the amount of carbon dioxide which can be injected and/or are costly or technically prohibitive. An alternative solution is proposed using variable, autonomous or surface-controlled, flow control devices strategically placed in the injection tubing string to provide stepwise pressure drops with depth.
This paper builds on the CCS simulator examined in SPE-209705 (Petitt and Konopczynski, 2022) by comparing three case studies modelled by altering the aperture of the wellhead choke and the inline control devices to maintain the CO2 in liquid form. These real-life scenarios were modelled with a variety of injection and reservoir pressures thus mimicking the varying conditions over the life of a well.
Using a purpose-designed CCS wellbore flow simulator that honors the thermodynamics and heat transfer of CO2 injection, we have modelled the flow performance of CCS well completions with multiple downhole flow control devices placed at strategic depths, the size and number of devices chosen to achieve the desired pressure distribution and CO2 injection rate.
The modelling shows that the multi-flow control device concept can maintain the carbon dioxide in a dense phase over anticipated operating conditions and provides a greater injection rate capacity and turndown range than multi-string solutions inside the same casing size. Depleted reservoirs and restricted CO2 injection rates require the greatest number of flow control devices, while maximum injection rates at maximum reservoir pressures require the fewest number of devices, introducing the potential for completion designs that permit retrieval of the in-line devices with minimal intervention as the reservoir is charged through project life.
Optimising the Jansz-Io Trunkline Next Project Using Integrated Production Modelling
Authors: Barzi Mohammad , Sze Ewen Siu Ming 
Published: October 2022

Abstract
The Chevron-operated Gorgon asset is the largest single resource project in Australia, with a portfolio of offshore gas fields to supply gas via two trunklines (Gorgon and Jansz-Io) to a three-train, 15.6 MTPA LNG plant and a 300 TJ/D domestic gas plant on Barrow Island. Gorgon will be a legacy project, with decades of production anticipated from the development of backfill fields gas resources. To realise the value of the asset, it is critical to select the right projects and execute them at the right time. Greater Gorgon Integrated Production Modelling (IPM) has been developed by Chevron Australia's gas supply team on behalf of the Gorgon Joint Venture (Australian Subsidiaries of Chevron, ExxonMobil, Shell, Osaka Gas, Tokyo Gas and JERA) to specifically enable optimisation of both the subsurface and surface value chain. It integrates reservoirs, wells, and subsea production networks to enable rigorous assessment of various portfolio-level development and planning scenarios.
The focus of this paper is on the Jansz-Io trunkline, which is initially supplied by the massive depletion drive Jansz-Io field, and the key decision of how to maintain production post development of the Gorgon Stage 2 (GS2) project. To inform this key decision, extensive evaluation was conducted using coupled INTERSECT (IX) IPM model to assess Jansz-Io Compression (J-IC) concepts (floating platform vs subsea compression). The IX-IPM model includes either detailed IX dynamic simulation or simplified material balance (MBAL) reservoirs, and a detailed production system that captures the full pressure hydraulics and their complex interactions. Using this IX-IPM model, a systematic staircase approach was applied, starting with a minimum facility concept, before sequentially adding more functionalities (power, capacity, phasing and backfill fields tie-in) and quantifying their incremental benefits. This enabled comprehensive understanding of the compression model's pressure hydraulic performance and various value trade-offs at each step. A fit-for-purpose, fixed power compression model was implemented to commence the staircase assessment. Once subsea compression was selected, and as the assessment matured, vendor compressor performance curves were adopted for more rigorous modelling.
Overall, the Greater Gorgon coupled IX-IPM model has proved to be invaluable in the assessment of the J-IC concept select and supported the Final Investment Decision (FID) on J-IC in 2021. The coupled IX-IPM model is continually refined with greater engineering resolution and additional production history to support the wider Gorgon asset decisions.