Development Of Petroleum Industry Research Articles

Hydrophobic and positively charged magnetic nanoparticles for enhanced oil recovery from concentrated emulsion wastewaters

With the development of petroleum industry, a large amount of oil-in-water (O/W) emulsion wastewaters were produced, resulting in serious environmental pollution and resource waste. Up till now, magnetic nanoparticles (MNPs) were frequently reported in emulsion wastewater treatment and mainly focused on the water purification, but little effort was devoted to the facile recovery of oil resource. In the present work, a class of hydrophobic and positively charged MNPs, namely dimethyloctadecyl [3-(trimethoxysilyl) propyl] ammonium chloride (DOTAC)-coated MNPs (M−DOTAC), was carefully synthesized by regulating DOTAC anchoring density on Fe3O4@SiO2, and then employed to treat the concentrated emulsion wastewaters stabilized by anionic sodium dodecyl benzene sulfonate (SDBS) or nonionic Tween-80. M−DOTAC with relatively high DOTAC density (M−DOTAC 1.8) exhibited higher positive charge density and hydrophobicity, and hence could significantly promote the oil droplet coalescence and mergence via the electrostatic attraction and hydrophobic adsorption bridging as well as the hydrophilic-lipophilic transition of interfacial adsorption layer. Accordingly, with addition of moderate dosage of M−DOTAC 1.8, the emulsion was broken and divided into three layers: (1) a continuous oil layer was formed in the upper layer which could be directly recycled; (2) the middle layer was composed of MNPs-tagged oil droplets/flocs; (3) the bottom layer was the clearer water phase. The optimal recovery rate of oil resource reached ∼ 60 % in SDBS stabilized system, and further increased to ∼ 98 % in Tween-80 stabilized system. However, the oil recovery rate was declined at an excessive dosage of M−DOTAC 1.8 due the formation of double emulsion. Besides, M−DOTAC 1.8 exhibited good reusability. These results indicated the fabricated M−DOTAC had great application prospect in treating emulsion wastewaters containing high oil content.

Analysis of asynchronous/inter-fracture injection-production mechanism under the condition of five-spot vertical and horizontal well combination in low permeability oil reservoirs

At present, low permeability resources are the focus of the development of petroleum industry. In this paper, firstly, the oil displacement mechanism under the condition of vertical and horizontal well combination is clarified. Secondly, the difference of the mechanism of enhancing oil recovery between asynchronous and inter-fracture injection and production is revealed. Thirdly, the difference of energy supplement mechanism between huff and puff and displacement is compared and analyzed. Results show that: (a) with asynchronous injection-production development, the oil saturation drop around the water injection well is greater than that of periodic injection-production and synchronous injection-production. (b) Under the dual effects of water injection pressure difference and capillary force, part of the injected water enters the reservoir with relatively small pore channels, expanding the swept volume. (c) In the soak stage of asynchronous injection-production development, capillary force is the main control factor of oil-water permeability, and its size determines the permeability level. (d) The injected water first flows through the large channel and then flows into small channel to complete the imbibition and replacement. (e) The flow field of asynchronous injection-production has a large sweep range, which is conducive to improving oil recovery.

A 3D reconstruction method of porous media based on improved WGAN-GP

The reconstruction of porous media is important to the development of petroleum industry, but the accurate characterization of the internal structures of porous media is difficult since these structures cannot be directly described using some formulae or languages. As one of the mainstream technologies for reconstructing porous media, numerical reconstruction technology can reconstruct pore structures similar to the real pore spaces through numerical generation and has the advantages of low cost and good reusability compared to imaging methods. One of the recent variants of generative adversarial network (GAN), Wasserstein GAN with gradient penalty (WGAN-GP), has shown favorable capability of extracting features for generating or reconstructing similar images with training images. Therefore, a 3D reconstruction method of porous media based on an improved WGAN-GP is presented in this paper, in which the original multi-layer perceptron (MLP) in WGAN-GP is replaced by convolutional neural network (CNN) since CNN is composed of deep convolution structures with strong feature learning abilities. The proposed method uses real 3D images as training images and finally generates 3D reconstruction of porous media with the features of training images. Compared with some traditional numerical generation methods and WGAN-GP, this method has certain advantages in terms of reconstruction quality and efficiency.

NMR T2 CUT OFF: WHICH ONE IS TO BE USED FOR APPLICATION?

Recent developments in petroleum industry have been witnessing the surge of the use of nuclear magnetic resonance (NMR) log. Despite some remaining problems the NMR technology appears to gain more acceptance as petrophysical tool for evaluating reservoir quality. Comprehensive formation evaluation requires determination of irreducible fluids, movable fluids, and permeability. However, rock heterogeneity introduces complexity in any formation evaluation activities. This can also cause problem for NMR log interpretation. In the presence of clays the most commonly used T2 cut off values, a constant value throughout a formation, seem to eventually yield inaccurate irreducible water saturation estimates, as well as other output such as permeability. This study focuses at finding a solution for finding the best way of choosing the most representative T2 cut off value to be used in NMR log interpretation. This is indeed a common pressing problem for heterogeneous formation rocks such as in the case of Tirrawarra sandstones used in this study. The main part of the study is devoted to comparison between the use of single averaged T2c value and establishment of empirical correlations enabling the provision of T2c for any level of heterogeneity (i.e. various levels of shaliness). The study however surprisingly shows that, in spite of the theoretical soundness of the empirical correlations established, simple averaging of T2c values yielded by a reliable method proves itself adequate. This conclusion therefore helps considerably in reducing complexity in NMR log interpretation.

ONCE MORE ABOUT THE PALEOZOIC OIL IN WEST SIBERIA

In this article, the prospects of Paleozoic oil in the regions of West Siberia are considered. After a brief historical essay on the discovery of Siberian oilfields, the author suggests a new paradigm in petroleum geology and gives his recommendations on the further development of petroleum industry.

Prediction of Hydrate Formation Risk Based on Temperature–Pressure Field Coupling in the Deepwater Gas Well Cleanup Process

Deepwater oil and gas exploitation has become an important field in the petroleum industry development. However, there are still no mature methods for hydrate prevention in the deepwater wells clea...

Reservoir Development by Waterflooding and Reservoir Performance Analysis

With the rapid development of China's society and economy, relevant industries get good development opportunities, and the demand for oil is increasing. The oil production in the oilfield is increasing day by day. At present, most oilfields gradually enter the middle and late stage of water injection exploitation, which increases the exploitation difficulty and reduces the exploitation amount. In this paper, a comprehensive analysis of waterflooding reservoirs and reservoir performance is made to promote better and faster development of petroleum industry.

Status analysis and development of reservoir numerical simulation technology

In recent years, with the continuous development of computer, applied mathematics and reservoir engineering, reservoir numerical simulation method has been improved and widely used. Through numerical simulation, we can make clear the fluid flow law, oil displacement mechanism and spatial distribution of remaining oil in the reservoir; study reasonable development scheme, select the best production parameters, and obtain the highest recovery factor and maximum economic benefit with the least investment and the most scientific production method. In order to meet the needs of the development of petroleum industry, reservoir numerical simulation technology has made great progress in recent years. The appearance of the development direction of fine reservoir numerical simulation is the most intuitive display of this progress. Therefore, this paper carries out a specific study on the research status and development trend of fine reservoir numerical simulation, hoping that this research can make more people understand the multi-disciplinary and one-dimensional The development trend of fine reservoir numerical simulation, which includes physical, high-speed, multi-functional integration and system coupling simulation.

Feasibility and analysis of oxidization of oil sludge by potassium persulfate based on principal component analysis

ABSTRACT A substantial amount of oil sludge is produced with the development of petroleum industry. In this study, the feasibility and mechanism of potassium persulfate oxidation are studied, and the key factors in the experiment are determined to efficiently deal with oil sludge of oil exploitation. Results show that the morphological changes of sludge before and after degradation are obvious, and the degradation rate can reach 37.81% under the following conditions: pH of 11, temperature of 55°C, sludge–water ratio of 1:2, dosage of 1.8 mmol/g, and time of 8 h. Further analysis showed that the degradation of oil by persulfate mainly relies on sulfate radicals and hydroxyl groups produced during oxidation. Principal factor and component analyses demonstrate that the pH is an important factor affecting the degradation rate. This research provides an effective method for the treatment of oil sludge.

Environmental Behavior of Petroleum in Soil and its Harmfulness Analysis

The environmental behavior of rock and oil pollutants in soil has always been the focus of environmental protection research. In this paper, the sources, hazards and existing states of the stone oil pollutants in the soil are briefly introduced, and their migration, adsorption and degradation behaviors in the soil, as well as their behavior characteristics and influencing factors are also introduced. It is of great significance to protect the ecological environment and promote the sustainable development of petroleum industry to fully understand the environmental behavior of stone and oil pollutants in soil.

AZERBAYCAN'DA KAPİTALİST GELİŞİM SÜRECİNİN POLİTİK EKONOMİSİ (19. YÜZYILIN ORTALARI-20. YÜZYILIN BAŞLARI)

Azerbaijan is a country that went through a number of different phases under the control of many countries for long permanent and short temporary terms. It can be said that states founded by Azerbaijan Turks were active in the states existed in middle ages and modern times and empires that controlled the region during their hegemony periods. The most important breaking point of the political history of Azerbaijan Turkish people corresponds to the beginnings of the nineteenth century. Russian empire, that was rising in this period and started expand to south, interfered to the long term Ottoman-Iran struggle in this period. Russian empire achieved significant gains from the competition that included three great powers. In 1813 Gülistan and 1828 Türkmençay agreements Azerbaijan’s territories north of Aras River were annexed by Russia. Russia developed different formulas in regards of the regional governance after its occupation. But these formulas that are known as administration reform were changed frequently as they were bereft of permanent and problem solving qualifications.The important changes in the socially traditional and economic structures were made possible by the 1861 reform that abolished the serfdom system that existed in the Czardom Russia. These reforms’ results, which started in the Caucasus ten years later, explicitly revealed itself in the development of the petroleum industry in Baku. The capitalist development in Baku simultaneously caused developments in education, press and cultural fields. On the one hand the development of petroleum industry changed Baku’s economic and political features and on the other hand caused serious demographical transformations. Within the scope of this process social and political transformations gained momentum concurrently with economic transformations, Azerbaijan Turkish People’s nation building process broken new grounds.Azerbaijan society, which built on Islamic identity and lived in colonial system, made progressions in enlightenment and nation consciousness, ummah and nation concepts started find distinct meanings in the start of twentieth century. As in the history of other nations, economic and social transformations show up as mutually triggering and concurrent processes in Azerbaijan history. In this regard, examination of economy politic of the colonial system and nation building process is important for demonstrating the social economic side of nationalization process that Azerbaijan Turks went through

ДИНАМИЧЕСКАЯ ЭФФЕКТИВНОСТЬ ВОСПРОИЗВОДСТВЕННЫХ ПРОЦЕССОВ НА РЕСУРСОДОБЫВАЮЩИХ ТЕРРИТОРИЯХ

Актуальность исследования обусловлена ухудшающимся состоянием ресурсной базы углеводородов в качественном и количественном плане. Позитивная динамика воспроизводства является основой нормального долгосрочного функционирования нефтегазового комплекса и социально-экономического развития ресурсодобывающих регионов. В условиях отсутствия прямой функциональной зависимости в процессе воспроизводства необходимы методы исследования, которые позволяют выявить негативные факторы и тенденции на всех этапах воспроизводственного инвестиционного цикла, явившиеся следствием происходящих изменений на рынке углеводородов и в государственном регулировании недропользования. Цель: проведение сравнительной оценки эффективности воспроизводственных процессов на ресурсодобывающих территориях с учетом построения экономико-математических моделей, основанных на применении непараметрических методов статистики. Объект: минерально-сырьевая база нефти ресурсодобывающих субъектов Российской Федерации. Методы: регрессионный, индекс производительности Малмквиста. Результаты. Охарактеризованы общероссийские тенденции в воспроизводстве ресурсов и запасов нефти, отражающие факт количественного и качественного состояния минерально-сырьевой базы нефти. Представлена методика проведения исследования, базирующаяся на построении динамической эффективности, иллюстрирующей тенденцию рефлексии субъекта недропользования на изменения в макроэкономическом окружении и в системе недропользования в части налогового льготирования. Блочная модель инвестиционного цикла со следующими блоками – геолого-технологический, производственный, организационно-отраслевой, социально-экономический, бюджетный, финансово-налоговый – является методическим инструментарием оценки воспроизводственных процессов на всех этапах инвестиционного цикла, которая позволяет отразить взаимосвязь всех ключевых показателей развития нефтегазовой отрасли. Модельные расчеты позволили выявить наличие инвестиционного дестабилизатора, представляющего собой механизм совокупного влияния организационно-экономического механизма в недропользования в части налогового льготирования и ценовых параметров мирового рынка нефти. При этом наиболее действенное влияние наблюдается в Томской области.

A Safety Performance Assessment Framework for the Petroleum Industry’s Sustainable Development Based on FAHP-FCE and Human Factors

Sustainability is a key factor in petroleum industry development, determining whether an enterprise has the ability to maintain high-quality safety management in the long term. In order to reduce occupational injuries and accidents, and to improve safety in the petroleum industry, this study proposes a hybrid approach based on the fuzzy analytical hierarchy process (FAHP), human factors, and the fuzzy comprehensive evaluation (FCE) method in order to assess safety performance in a petroleum enterprise. This paper is comprised of four stages. In the first stage, a model is constructed for assessing the safety of the petroleum industry based on a literature review. In the second stage, we use the FAHP to determine the weights of five factors and 19 sub-factors. In the third stage, employees are the subjects of a questionnaire on the safety performance of the petroleum enterprise. According to the analysis of the assessment results, we focus on improving employees’ safety behaviors and mental health. A second round of questionnaires is distributed to the employees, and a second set of assessment results obtained. Finally, the results of the two evaluations are compared, and the effectiveness of the combination of FAHP, human factors, and FCE is verified.

A review on the application of differential scanning calorimetry (DSC) to petroleum products

Differential scanning calorimetry (DSC) can be used to obtain a variety of thermodynamic or kinetic data of petroleum products. The application of DSC to petroleum fluids includes characterization of crude oils, studying bulk and confined space phase behavior of hydrocarbons, and evaluating the glass transition in crude oils. In addition, the kinetic data of the pyrolysis, combustion, and oxidation of crude oils can be obtained using DSC. In this work, a comprehensive review of the application of DSC to petroleum-based products is provided that integrates different approaches in the literature in order to provide a constructive platform for future studies. Also, the limitations of the method are elaborated in detail, and recommendations are provided to appropriately optimize the accuracy and applicability of DSC to study petroleum products. The impact of different operating parameters in using DSC including the thermal scanning rate, pressure, modulating temperature program, and analysis method is systematically discussed. Also, the effect of neglecting thermal radiation in DSC experiments is highlighted to ensure that future studies consider this important phenomenon once analyzing the raw data. As well, the advantage of coupling DSC with other analytical techniques is carefully reviewed to underline that precious information that can be obtained once DSC is integrated with other methods. This comprehensive review expresses that DSC has different themes of applications to the research and development in petroleum industry. Due to its simplicity, precious and rapid data collection features, DSC is one of the primary methods for characterizing petroleum fluids. Yet, further advancements both in the equipment design and in data analysis is urged to improve the applicability of DSC to crude oils and their fractions.

Numerical Simulation and Experimental Study of Cuttings Transport in Narrow Annulus

With the development of petroleum industry, it needs an efficient drill method such as under balanced drilling (UBD) to enhance the rate of penetration (ROP). However, borehole instability is a problem that UBD must face. The coiled tubing partial underbalanced drilling (CT-PUBD) is proposed to try to solve this problem while keeping an underbalanced condition with high ROP. This paper analyzes the laws of cuttings transport in the narrow annulus focus on this new technique through the simulations and experiments. From the results of simulations, it obtains that the particle velocity declines with the increase of rotational speed and increases with the increase of flow rate. The particles become concentrated as the flow rate increases, and the high flow rate limits particles in a small area. The particle distribution undergoes a process of concentration, dispersion, and concentration as the rotational speed increases. The high rotational speed makes particles deviate from the high fluid velocity area, which causes low particle velocity. The relationships between particle velocity and rotational speed and between particle velocity and flow rate are fitted through the equations, respectively. The phenomenon of collision of particles, sinking and rising of particles, and variation of particle velocity are observed in the experiments. The error between the particle velocity in the experiment and numerical simulation is less than 8.5%. This paper is an exploratory study conducted for the cuttings transport in narrow annulus.

Layout optimization of tree-tree gas pipeline network

With the development of petroleum industry and the exploitation of unconventional gas reservoir, the topological form of surface pipeline network is changing gradually and a tree-tree structure is put forward in gas field. Therefore, optimization of the tree-tree pipeline network becomes urgent and indispensable. In this paper, a comprehensive optimization objective function and constraints is established to allow layout design. In view of the characteristics of the model comprising numerous discrete variables (e.g. location, number, allocation relationship, connection decision variable etc), a hierarchical optimization strategy is proposed to decompose it into three sub-problems. On the basis of the proposed model, an optimization program based on Delaunay triangulation has been presented to solve the non-linear constrained optimization problem which contains connection decision variable between wells in clusters on the constraint condition of path length restriction. Further, the reason of using Delaunay triangulation is analyzed and the optimization process of the essential sub-problem has been illustrated. Moreover, the developed program has been applied to a practical coalbed methane field project. The model and method in this paper is shown to be feasible and effective to solve layout optimization on two-level tree-tree pipeline network.

Propose Implementation Full Coverage Audit of Oil Corporations

<p>With the development of petroleum industry, oil corporations continue to expand the scale and scope of business. In the other hand, it also brought a lot of problems and risks whereby the companies have to take some measures to deal with. Various innovation strategies are introduced and the oil companies face more challenges in terms of business and management. Thus, auditing requires a greater role whereby to be supported by senior managers within the corporation. In addition, multi-angle auditing will be able to achieve full coverage of the audit approach to promote the realization of the value of the corporation. In this paper, the audit of oil companies made some proposals to achieve full coverage audit in order to assist better development of Corporations</p>

Numerical investigation of surface conduit parallel gas pipeline explosive based on the TNT equivalent weight method

With the rapid development of petroleum industry, the transport pipelines of oil and gas are increasingly constructed to minimize land use conflicts. Therefore, the parallel pipelines are unavoidable in order to save land resource, reduce the pipeline construction and maintenance costs. The economy and security of pipeline laying and running is the primary problem considered in pipeline construction, which the parallel spacing plays a decisive role to. The leakage of natural gas is very serious and dangerous due to its flammable and combustible. The explosive of leak gas causes impact failure to parallel pipeline. Specific to the surface conduit parallel gas pipeline, numerical simulation of leak natural gas explosive was carried out based on TNT equivalent weight method. Explosive damage degree of pipeline decreased with the pipeline distance increasing. Consulting with the pipeline ovalization strain design criteria and the combustion effect, the safety parallel natural gas pipeline space maybe at least 4 m to ensure the surface conduit parallel pipeline safely and steadily operation.

ПРОБЛЕМЫ ИННОВАЦИОННОГО РАЗВИТИЯ НЕФТЕХИМИЧЕСКОГО КОМПЛЕКСА САМАРСКОЙ ОБЛАСТИ

The structure of the petroleum chemical complex in the Samara region is presented. Basic indices of the petroleum chemical complex development in the region in 2014-2015 are analyzed. Key purposes and problems in the strategy of the Samara region development under current conditions are emphasized.
 Some methods to support further a positive dnamics in the development of petroleum industry are offered.

Supervising development in petroleum industry of the Russian Federation

Supervising has strongly consolidated in the domestic petroleum services market of the Russian Federation. But despite the rapid growth of the supervising services market, there is a definite need for its further development. In the article, the developments of supervising in petroleum industry of the Russian Federation, as well as possible ways of its improvement are considered.